270 ha addon add syntax check to config parameters (#274)

* fixed requirement status of client mode host

---------

Co-authored-by: Michael Metz <michael.metz@siemens.com>

.cover_ghaction_rc

@@ -0,0 +1,3 @@
+[run]
+branch = True
+relative_files = True

.coveragerc

@@ -1,3 +1,2 @@
 [run]
 branch = True
-relative_files = True

.env_example

@@ -0,0 +1,9 @@
+# example file for the .env file. The .env set private values 
+# which are needed for builing containers  
+
+# registry for debug an dev container
+PRIVAT_CONTAINER_REGISTRY=docker.io/<user>/
+
+# registry for official container (preview, rc, rel)
+PUBLIC_CONTAINER_REGISTRY=ghcr.io/<user>/
+PUBLIC_CR_KEY=

.github/workflows/python-app.yml

@@ -24,27 +24,16 @@ permissions:
   contents: read
   pull-requests: read # allows SonarCloud to decorate PRs with analysis results
 
+env:
+  TZ: "Europe/Berlin"
+  SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
 
     steps:
-    - name: Set timezone
-      uses: szenius/set-timezone@v2.0
-      with:
-        timezoneLinux: "Europe/Berlin"
-        timezoneMacos: "Europe/Berlin"
-        timezoneWindows: "Europe/Berlin"
-    # - name: Start Mosquitto
-    #  uses: namoshek/mosquitto-github-action@v1
-    #  with:
-    #    version: '1.6'
-    #    ports: '1883:1883 8883:8883'
-        # certificates: ${{ github.workspace }}/.ci/tls-certificates
-        # config: ${{ github.workspace }}/.ci/mosquitto.conf
-        # password-file: ${{ github.workspace}}/.ci/mosquitto.passwd
-    #    container-name: 'mqtt'
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
@@ -65,13 +54,13 @@ jobs:
         flake8 --exit-zero --ignore=C901,E121,E123,E126,E133,E226,E241,E242,E704,W503,W504,W505 --format=pylint --output-file=output_flake.txt --exclude=*.pyc app/src/
     - name: Test with pytest
       run: |
-        python -m pytest app --cov=app/src --cov-report=xml
+        python -m pytest app --cov=app/src --cov-config=.cover_ghaction_rc --cov-report=xml
         coverage report
     - name: Analyze with SonarCloud
-      uses: SonarSource/sonarcloud-github-action@v2.2.0
+      if: ${{ env.SONAR_TOKEN != 0 }}
+      uses: SonarSource/sonarqube-scan-action@v4
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
       with:
         projectBaseDir: .
         args:

.gitignore

@@ -1,11 +1,15 @@
 __pycache__
 .pytest_cache
+.venv/**
 bin/**
 mosquitto/**
 homeassistant/**
+ha_addons/ha_addon/rootfs/home/proxy/*
+ha_addons/ha_addon/rootfs/requirements.txt
 tsun_proxy/**
 Doku/**
 .DS_Store
 .coverage
 .env
+.venv
 coverage.xml

.hadolint.yaml

@@ -0,0 +1,2 @@
+ignored:
+    - SC1091

.python-version

@@ -0,0 +1 @@
+3.13.1

.vscode/settings.json

@@ -1,16 +1,20 @@
 {
+    "python.analysis.extraPaths": [
+        "app/src",
+        "app/tests",
+        ".venv/lib",
+    ],
     "python.testing.pytestArgs": [
-        "-vv", 
-        "app",
+        "-vvv",
         "--cov=app/src",
         "--cov-report=xml",
-        "--cov-report=html",
+        "app",
         "system_tests"
     ],
     "python.testing.unittestEnabled": false,
     "python.testing.pytestEnabled": true,
     "flake8.args": [
-        "--extend-exclude=app/tests/*.py system_tests/*.py"   
+        "--extend-exclude=app/tests/*.py,system_tests/*.py"   
     ],
     "sonarlint.connectedMode.project": {
         "connectionId": "s-allius",
@@ -18,5 +22,11 @@
     },
     "files.exclude": {
         "**/*.pyi": true
-    }
+    },
+    "python.analysis.typeEvaluation.deprecateTypingAliases": true,
+    "python.autoComplete.extraPaths": [
+        ".venv/lib"
+    ],
+    "coverage-gutters.coverageBaseDir": "tsun",
+    "makefile.configureOnOpen": false
 }

CHANGELOG.md

@@ -7,6 +7,53 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
+## [0.12.1] - 2025-01-13
+
+- addon: bump base image version to v17.1.0
+- addon: add syntax check to config parameters
+- addon: bump base image version to v17.0.2
+
+## [0.12.0] - 2024-12-22
+
+- add hadolint configuration
+- detect usage of a local DNS resolver [#37](https://github.com/s-allius/tsun-gen3-proxy/issues/37)
+- path for logs is now configurable by cli args
+- configure the number of keeped logfiles by cli args
+- add DOCS.md and CHANGELOG.md for add-ons
+- pin library version und update them with renovate
+- build config.yaml for add-ons by a jinja2 template
+- use gnu make to build proxy and add-on
+- make the configuration more flexible, add command line args to control this
+- fix the python path so we don't need special import paths for unit tests anymore
+- add emulator mode [#205](https://github.com/s-allius/tsun-gen3-proxy/issues/205)
+- ignore inverter replays which a older than 1 day [#246](https://github.com/s-allius/tsun-gen3-proxy/issues/246)
+- support test coverage in vscode
+- upgrade SonarQube action to version 4
+- update github action to Ubuntu 24-04
+- add initial support for home assistant add-ons from @mime24
+- github action: use ubuntu 24.04 and sonar-scanner-action 4 [#222](https://github.com/s-allius/tsun-gen3-proxy/issues/222)
+- migrate paho.mqtt CallbackAPIVersion to VERSION2 [#224](https://github.com/s-allius/tsun-gen3-proxy/issues/224)
+- add PROD_COMPL_TYPE to trace
+- add SolarmanV5 messages builder
+- report inverter alarms and faults per MQTT [#7](https://github.com/s-allius/tsun-gen3-proxy/issues/7)
+
+## [0.11.1] - 2024-11-20
+
+- fix pytest setup that can be startet from the rootdir
+  - support python venv environment
+  - add pytest.ini
+  - move common settings from .vscode/settings.json into pytest.ini
+  - add missing requirements
+  - fix import paths for pytests
+- Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.10.5 to 3.10.11.
+
+## [0.11.0] - 2024-10-13
+
+- fix healthcheck on infrastructure with IPv6 support [#196](https://github.com/s-allius/tsun-gen3-proxy/issues/196)
+- refactoring: cleaner architecture, increase test coverage
+- Parse more values in Server Mode [#186](https://github.com/s-allius/tsun-gen3-proxy/issues/186)
+- GEN3: add support for new messages of version 3 firmwares [#182](https://github.com/s-allius/tsun-gen3-proxy/issues/182)
+- add support for controller MAC and serial number
 - GEN3: don't crash on overwritten msg in the receive buffer
 - Reading the version string from the image updates it even if the image is re-pulled without re-deployment
   

Makefile

@@ -0,0 +1,14 @@
+.PHONY: build clean addon-dev addon-debug addon-rc addon-rel debug dev preview rc rel
+
+debug dev preview rc rel:
+	$(MAKE) -C app $@
+
+clean build:
+	$(MAKE) -C ha_addons $@ 
+
+addon-dev addon-debug addon-rc addon-rel:
+	$(MAKE) -C ha_addons $(patsubst addon-%,%,$@)
+
+check-docker-compose:
+	docker-compose config -q
+

README.md

@@ -7,15 +7,15 @@
 <p align="center">
     <a href="https://opensource.org/licenses/BSD-3-Clause"><img alt="License: BSD-3-Clause" src="https://img.shields.io/badge/License-BSD_3--Clause-green.svg"></a>
     <a href="https://www.python.org/downloads/release/python-3120/"><img alt="Supported Python versions" src="https://img.shields.io/badge/python-3.12-blue.svg"></a>
-    <a href="https://sbtinstruments.github.io/aiomqtt/introduction.html"><img alt="Supported aiomqtt versions" src="https://img.shields.io/badge/aiomqtt-2.2.0-lightblue.svg"></a>
+    <a href="https://sbtinstruments.github.io/aiomqtt/introduction.html"><img alt="Supported aiomqtt versions" src="https://img.shields.io/badge/aiomqtt-2.3.0-lightblue.svg"></a>
     <a href="https://libraries.io/pypi/aiocron"><img alt="Supported aiocron versions" src="https://img.shields.io/badge/aiocron-1.8-lightblue.svg"></a>
-    <a href="https://toml.io/en/v1.0.0"><img alt="Supported toml versions" src="https://img.shields.io/badge/toml-1.0.0-lightblue.svg"></a>   
+    <a href="https://toml.io/en/v1.0.0"><img alt="Supported toml versions" src="https://img.shields.io/badge/toml-1.0.0-lightblue.svg"></a>
     <br>
-    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=alert_status"><img src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=alert_status"></a>
-    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=bugs"><img src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=bugs"></a>
-    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=code_smells"><img src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=code_smells"></a>
+    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=alert_status"><img alt="The quality gate status" src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=alert_status"></a>
+    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=bugs"><img alt="No of bugs" src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=bugs"></a>
+    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=code_smells"><img alt="No of code-smells" src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=code_smells"></a>
     <br>
-    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=coverage"><img src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=coverage"></a>
+    <a href="https://sonarcloud.io/component_measures?id=s-allius_tsun-gen3-proxy&metric=coverage"><img alt="Test coverage in percent" src="https://sonarcloud.io/api/project_badges/measure?project=s-allius_tsun-gen3-proxy&metric=coverage"></a>
 </p>
 
 # Overview
@@ -28,6 +28,9 @@ Through this, the inverter then establishes a connection to the proxy and the pr
 
 By means of `docker` a simple installation and operation is possible. By using `docker-composer`, a complete stack of proxy, `MQTT-brocker` and `home-assistant` can be started easily.
 
+Alternatively you can run the TSUN-Proxy as a Home Assistant Add-on. The installation of this add-on is pretty straightforward and not different in comparison to installing any other custom Home Assistant add-on.
+Follow the Instructions mentioned in the add-on subdirectory `ha_addons`.
+
 <br>
 ℹ️ This project is not related to the company TSUN. It is a private initiative that aims to connect TSUN inverters with an MQTT broker. There is no support and no warranty from TSUN.
 <br><br>
@@ -65,11 +68,20 @@ Here are some screenshots of how the inverter is displayed in the Home Assistant
 
 ## Requirements
 
+### for Docker Installation
+
 - A running Docker engine to host the container
 - Ability to loop the proxy into the connection between the inverter and the TSUN cloud
 
+### for Home Assistant Add-on Installation
+
+- Running Home Assistant on Home Assistant OS or Supervised. Container and Core installations doesn't support add-ons.
+- Ability to loop the proxy into the connection between the inverter and the TSUN cloud
+
 # Getting Started
 
+## for Docker Installation
+
 To run the proxy, you first need to create the image. You can do this quite simply as follows:
 
 ```sh
@@ -95,8 +107,22 @@ With this information we can customize the `docker run`` statement:
 docker run  --dns '8.8.8.8' --env 'UID=1050' -p '5005:5005' -p '10000:10000' -v ./config:/home/tsun-proxy/config -v ./log:/home/tsun-proxy/log tsun-proxy
 ```
 
+## for Home Assistant Add-on Installation
+
+1. Add the repository URL to the Home Assistant add-on store
+[![Add repository on my Home Assistant][repository-badge]][repository-url]
+2. Reload the add-on store page
+3. Click the "Install" button to install the add-on.
+
 # Configuration
 
+```txt
+❗The following description applies to the Docker installation. When installing the Home Assistant add-on, the 
+configuration is carried out via the Home Assistant UI. Some of the options described below are not required for 
+this. Additionally, creating a config.toml file is not necessary. However, for a general understanding of the 
+configuration and functionality, it is helpful to read the following description.
+```
+
 The configuration consists of several parts. First, the container and the proxy itself must be configured, and then the connection of the inverter to the proxy must be set up, which is done differently depending on the inverter generation
 
 For GEN3PLUS inverters, this can be done easily via the web interface of the inverter. The GEN3 inverters do not have a web interface, so the proxy is integrated via a modified DNS resolution.
@@ -112,7 +138,7 @@ No special configuration is required for the Docker container if it is built and
 
 On the host, two directories (for log files and for config files) must be mapped. If necessary, the UID of the proxy process can be adjusted, which is also the owner of the log and configuration files.
 
-A description of the configuration parameters can be found [here](https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-details#docker-compose-environment-variables).
+A description of the configuration parameters can be found [here](https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#docker-compose-environment-variables).
 
 ## Proxy Configuration
 
@@ -121,26 +147,63 @@ The proxy can be configured via the file 'config.toml'. When the proxy is starte
 The configration uses the TOML format, which aims to be easy to read due to obvious semantics.
 You find more details here: <https://toml.io/en/v1.0.0>
 
+<details>
+<summary>Here is an example of a <b>config.toml</b> file</summary>
+
 ```toml
-# configuration for tsun cloud for 'GEN3' inverters
-tsun.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
-tsun.host    = 'logger.talent-monitoring.com'
-tsun.port    = 5005
-
-# configuration for solarman cloud  for 'GEN3 PLUS' inverters
-solarman.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
-solarman.host    = 'iot.talent-monitoring.com'
-solarman.port    = 10000
+##########################################################################################
+###
+###          T S U N  -  G E N 3  -   P R O X Y
+### 
+###                from   Stefan Allius
+###
+##########################################################################################
+###
+###   The readme will give you an overview of the project:
+###   https://s-allius.github.io/tsun-gen3-proxy/
+###
+###   The proxy supports different operation modes. Select the proper mode 
+###   which depends on your inverter type and you inverter firmware. 
+###   Please read: 
+###   https://github.com/s-allius/tsun-gen3-proxy/wiki/Operation-Modes-Overview
+###
+###   Here you will find a description of all configuration options:
+###   https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml
+###
+###   The configration uses the TOML format, which aims to be easy to read due to 
+###   obvious semantics. You find more details here: https://toml.io/en/v1.0.0
+###
+##########################################################################################
 
 
-# mqtt broker configuration
+##########################################################################################
+##
+## MQTT broker configuration
+##
+## In this block, you must configure the connection to your MQTT broker and specify the
+## required credentials. As the proxy does not currently support an encrypted connection
+## to the MQTT broker, it is strongly recommended that you do not use a public broker.
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#mqtt-broker-account
+##
+
 mqtt.host    = 'mqtt'   # URL or IP address of the mqtt broker
 mqtt.port    = 1883
 mqtt.user    = ''
 mqtt.passwd  = ''
 
 
-# home-assistant
+##########################################################################################
+##
+## HOME ASSISTANT
+##
+## The proxy supports the MQTT autoconfiguration of Home Assistant (HA). The default 
+## values match the HA default configuration. If you need to change these or want to use
+## a different MQTT client, you can adjust the prefixes of the MQTT topics below.
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#home-assistant
+##
+
 ha.auto_conf_prefix = 'homeassistant'       # MQTT prefix for subscribing for homeassistant status updates
 ha.discovery_prefix = 'homeassistant'       # MQTT prefix for discovery topic 
 ha.entity_prefix    = 'tsun'                # MQTT topic prefix for publishing inverter values
@@ -148,40 +211,115 @@ ha.proxy_node_id    = 'proxy'               # MQTT node id, for the proxy_node_i
 ha.proxy_unique_id  = 'P170000000000001'    # MQTT unique id, to identify a proxy instance
 
 
-# microinverters
-inverters.allow_all = false   # True: allow inverters, even if we have no inverter mapping
+##########################################################################################
+##
+## GEN3 Proxy Mode Configuration
+##
+## In this block, you can configure an optional connection to the TSUN cloud for GEN3
+## inverters. This connection is only required if you want send data to the TSUN cloud
+## to use the TSUN APPs or receive firmware updates.  
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#tsun-cloud-for-gen3-inverter-only
+##
 
-# inverter mapping, maps a `serial_no* to a `node_id` and defines an optional `suggested_area` for `home-assistant`
-#
-# for each inverter add a block starting with [inverters."<16-digit serial numbeer>"]
+tsun.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
+tsun.host    = 'logger.talent-monitoring.com'
+tsun.port    = 5005
+
+
+##########################################################################################
+##
+## GEN3PLUS Proxy Mode Configuration
+##
+## In this block, you can configure an optional connection to the TSUN cloud for GEN3PLUS
+## inverters. This connection is only required if you want send data to the TSUN cloud
+## to use the TSUN APPs or receive firmware updates.  
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#solarman-cloud-for-gen3plus-inverter-only
+##
+solarman.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
+solarman.host    = 'iot.talent-monitoring.com'
+solarman.port    = 10000
+
+
+##########################################################################################
+###
+### Inverter Definitions
+###
+### The proxy supports the simultaneous operation of several inverters, even of different
+### types. A configuration block must be defined for each inverter, in which all necessary
+### parameters must be specified. These depend on the operation mode used and also differ
+### slightly depending on the inverter type.
+###
+### In addition, the PV modules can be defined at the individual inputs for documentation
+### purposes, whereby these are displayed in Home Assistant.
+###
+### The proxy only accepts connections from known inverters. This can be switched off for
+### test purposes and unknown serial numbers are also accepted. 
+###
+
+inverters.allow_all = false   # only allow known inverters
+
+
+##########################################################################################
+##
+## For each GEN3 inverter, the serial number of the inverter must be mapped to an MQTT
+## definition. To do this, the corresponding configuration block is started with
+## `[Inverter.“<16-digit serial number>”]` so that all subsequent parameters are assigned
+## to this inverter. Further inverter-specific parameters (e.g. polling mode) can be set
+## in the configuration block
+##
+## The serial numbers of all GEN3 inverters start with `R17`!
+##
 
 [inverters."R17xxxxxxxxxxxx1"]
-node_id = 'inv1'              # Optional, MQTT replacement for inverters serial number  
-suggested_area = 'roof'       # Optional, suggested installation area for home-assistant
-modbus_polling = false        # Disable optional MODBUS polling for GEN3 inverter
+node_id = 'inv_1'            # MQTT replacement for inverters serial number  
+suggested_area = 'roof'      # suggested installation place for home-assistant
+modbus_polling = false       # Disable optional MODBUS polling for GEN3 inverter
 pv1 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv2 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
 
-[inverters."R17xxxxxxxxxxxx2"]
-node_id = 'inv2'              # Optional, MQTT replacement for inverters serial number  
-suggested_area = 'balcony'    # Optional, suggested installation area for home-assistant
-modbus_polling = false        # Disable optional MODBUS polling for GEN3 inverter
-pv1 = {type = 'RSM40-8-405M', manufacturer = 'Risen'}   # Optional, PV module descr
-pv2 = {type = 'RSM40-8-405M', manufacturer = 'Risen'}   # Optional, PV module descr
+
+##########################################################################################
+##
+## For each GEN3PLUS inverter, the serial number of the inverter must be mapped to an MQTT
+## definition. To do this, the corresponding configuration block is started with
+## `[Inverter.“<16-digit serial number>”]` so that all subsequent parameters are assigned
+## to this inverter. Further inverter-specific parameters (e.g. polling mode, client mode)
+## can be set in the configuration block
+## 
+## The serial numbers of all GEN3PLUS inverters start with `Y17` or Y47! Each GEN3PLUS
+## inverter is supplied with a “Monitoring SN:”. This can be found on a sticker enclosed
+## with the inverter.
+##
 
 [inverters."Y17xxxxxxxxxxxx1"]  # This block is also for inverters with a Y47 serial no
-monitor_sn = 2000000000       # The "Monitoring SN:" can be found on a sticker enclosed with the inverter
-node_id = 'inv_3'             # MQTT replacement for inverters serial number  
-suggested_area = 'garage'     # suggested installation place for home-assistant
-modbus_polling = false        # Enable optional MODBUS polling for GEN3PLUS inverter
+monitor_sn = 2000000000      # The GEN3PLUS "Monitoring SN:"
+node_id = 'inv_2'            # MQTT replacement for inverters serial number  
+suggested_area = 'garage'    # suggested installation place for home-assistant
+modbus_polling = true        # Enable optional MODBUS polling
+
 # if your inverter supports SSL connections you must use the client_mode. Pls, uncomment
 # the next line and configure the fixed IP of your inverter
-#client_mode = {host = '192.168.0.1', port = 8899}       
+#client_mode = {host = '192.168.0.1', port = 8899, forward = true}  
+
 pv1 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv2 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv3 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv4 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 
+
+##########################################################################################
+###
+### If the proxy mode is configured, commands from TSUN can be sent to the inverter via
+### this connection or parameters (e.g. network credentials) can be queried. Filters can
+### then be configured for the AT+ commands from the TSUN Cloud so that only certain
+### accesses are permitted.
+###
+### An overview of all known AT+ commands can be found here:
+### https://github.com/s-allius/tsun-gen3-proxy/wiki/AT--commands
+###
+
 [gen3plus.at_acl]
 tsun.allow = ['AT+Z', 'AT+UPURL', 'AT+SUPDATE']   # allow this for TSUN access
 tsun.block = []                                   
@@ -190,6 +328,8 @@ mqtt.block = []
 
 ```
 
+</details>
+
 ## Inverter Configuration
 
 GEN3PLUS inverters offer a web interface that can be used to configure the inverter. This is very practical for sending the data directly to the proxy. On the one hand, the inverter broadcasts its own SSID on 2.4GHz. This can be recognized because it is broadcast with `AP_<Montoring SN>`. You will find the `Monitor SN` and the password for the WLAN connection on a small sticker enclosed with the inverter.
@@ -206,7 +346,6 @@ In this case, you MUST NOT change the port or the host address, as this may caus
 require a complete reset. Use the configuration in client mode instead.
 ```
 
-
 If access to the web interface does not work, it can also be redirected via DNS redirection, as is necessary for the GEN3 inverters.
 
 ## Client Mode (GEN3PLUS only)
@@ -294,3 +433,6 @@ We're very happy to receive contributions to this project! You can get started b
 ## Changelog
 
 The changelog lives in [CHANGELOG.md](https://github.com/s-allius/tsun-gen3-proxy/blob/main/CHANGELOG.md). It follows the principles of [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+
+[repository-badge]: https://img.shields.io/badge/Add%20repository%20to%20my-Home%20Assistant-41BDF5?logo=home-assistant&style=for-the-badge
+[repository-url]: https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fs-allius%2Fha-addons

app/.version

@@ -0,0 +1 @@
+0.12.1

app/Dockerfile

@@ -4,14 +4,13 @@ ARG GID=1000
 
 #
 # first stage for our base image
-FROM python:3.12-alpine AS base
-USER root
+FROM python:3.13-alpine AS base
 
-COPY --chmod=0700 ./hardening_base.sh .
+COPY --chmod=0700 ./hardening_base.sh /
 RUN apk upgrade --no-cache && \
-    apk add --no-cache su-exec	&& \
-    ./hardening_base.sh && \
-    rm ./hardening_base.sh
+    apk add --no-cache su-exec=0.2-r3	&& \
+    /hardening_base.sh && \
+    rm /hardening_base.sh
 
 #
 # second stage for building wheels packages
@@ -19,8 +18,8 @@ FROM base AS builder
 
 # copy the dependencies file to the root dir and install requirements
 COPY ./requirements.txt /root/
-RUN apk add --no-cache build-base && \
-    python -m pip install --no-cache-dir -U pip wheel && \
+RUN apk add --no-cache build-base=0.5-r3 && \
+    python -m pip install --no-cache-dir pip==24.3.1 wheel==0.45.1 && \
     python -OO -m pip wheel --no-cache-dir --wheel-dir=/root/wheels -r /root/requirements.txt
 
 
@@ -50,9 +49,9 @@ VOLUME ["/home/$SERVICE_NAME/log", "/home/$SERVICE_NAME/config"]
 # and unistall python packages and alpine package manger to reduce attack surface
 COPY --from=builder /root/wheels /root/wheels
 COPY --chmod=0700 ./hardening_final.sh .
-RUN python -m pip install --no-cache --no-index /root/wheels/* && \
+RUN python -m pip install --no-cache-dir --no-cache --no-index /root/wheels/* && \
     rm -rf /root/wheels && \
-    python -m pip uninstall --yes setuptools wheel pip && \
+    python -m pip uninstall --yes wheel pip && \
     apk --purge del apk-tools && \
     ./hardening_final.sh && \
     rm ./hardening_final.sh

app/Makefile

@@ -0,0 +1,67 @@
+#!make
+include ../.env
+
+SHELL = /bin/sh
+IMAGE = tsun-gen3-proxy
+
+
+# Folders
+SRC=.
+SRC_PROXY=$(SRC)/src
+CNF_PROXY=$(SRC)/config
+
+DST=rootfs
+DST_PROXY=$(DST)/home/proxy
+
+# collect source files 
+SRC_FILES := $(wildcard $(SRC_PROXY)/*.py)\
+ $(wildcard $(SRC_PROXY)/*.ini)\
+ $(wildcard $(SRC_PROXY)/cnf/*.py)\
+ $(wildcard $(SRC_PROXY)/gen3/*.py)\
+ $(wildcard $(SRC_PROXY)/gen3plus/*.py)
+CNF_FILES := $(wildcard $(CNF_PROXY)/*.toml)
+
+# determine destination files
+TARGET_FILES = $(SRC_FILES:$(SRC_PROXY)/%=$(DST_PROXY)/%)
+CONFIG_FILES = $(CNF_FILES:$(CNF_PROXY)/%=$(DST_PROXY)/%)
+
+export BUILD_DATE := ${shell date -Iminutes}
+VERSION := $(shell cat $(SRC)/.version)
+export MAJOR  := $(shell echo $(VERSION) | cut -f1 -d.)
+
+PUBLIC_URL := $(shell echo $(PUBLIC_CONTAINER_REGISTRY) | cut -f1 -d/)
+PUBLIC_USER :=$(shell echo $(PUBLIC_CONTAINER_REGISTRY) | cut -f2 -d/)
+
+
+dev debug:
+	@echo version: $(VERSION)  build-date: $(BUILD_DATE)   image: $(PRIVAT_CONTAINER_REGISTRY)$(IMAGE)
+	export VERSION=$(VERSION)-$@ && \
+	export IMAGE=$(PRIVAT_CONTAINER_REGISTRY)$(IMAGE) && \
+	docker buildx bake -f docker-bake.hcl $@
+
+preview rc rel:
+	@echo version: $(VERSION)  build-date: $(BUILD_DATE)   image: $(PUBLIC_CONTAINER_REGISTRY)$(IMAGE)
+	@echo login at $(PUBLIC_URL) as $(PUBLIC_USER)
+	@DO_LOGIN="$(shell echo $(PUBLIC_CR_KEY) | docker login $(PUBLIC_URL) -u $(PUBLIC_USER) --password-stdin)"
+	export VERSION=$(VERSION)-$@ && \
+	export IMAGE=$(PUBLIC_CONTAINER_REGISTRY)$(IMAGE) && \
+	docker buildx bake -f docker-bake.hcl $@
+
+
+
+.PHONY: debug dev preview rc rel
+
+
+$(CONFIG_FILES): $(DST_PROXY)/% : $(CNF_PROXY)/%
+	@echo Copy $< to $@
+	@mkdir -p $(@D)
+	@cp $< $@
+
+$(TARGET_FILES): $(DST_PROXY)/% : $(SRC_PROXY)/%
+	@echo Copy $< to $@
+	@mkdir -p $(@D)
+	@cp $< $@
+
+$(DST)/requirements.txt : $(SRC)/requirements.txt
+	@echo Copy $< to $@
+	@cp $< $@

app/build.sh

@@ -1,51 +0,0 @@
-#!/bin/bash
-# Usage: ./build.sh [dev|rc|rel]
-# dev: development build
-# rc: release candidate build
-# rel: release build and push to ghcr.io
-# Note: for release build, you need to set GHCR_TOKEN
-# export GHCR_TOKEN=<YOUR_GITHUB_TOKEN> in your .zprofile
-# see also: https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry
-
-
-set -e
-
-BUILD_DATE=$(date -Iminutes)
-BRANCH=$(git rev-parse --abbrev-ref HEAD)
-VERSION=$(git describe --tags --abbrev=0)
-VERSION="${VERSION:1}"
-arr=(${VERSION//./ })
-MAJOR=${arr[0]}
-IMAGE=tsun-gen3-proxy
-
-GREEN='\033[0;32m'
-BLUE='\033[0;34m'
-NC='\033[0m'
-
-if [[ $1 == debug ]] || [[ $1 == dev ]] ;then
-IMAGE=docker.io/sallius/${IMAGE}
-VERSION=${VERSION}+$1
-elif [[ $1 == rc ]] || [[ $1 == rel ]] || [[ $1 == preview ]] ;then
-IMAGE=ghcr.io/s-allius/${IMAGE}
-echo 'login to ghcr.io'    
-echo $GHCR_TOKEN | docker login ghcr.io -u s-allius --password-stdin
-else
-echo argument missing!
-echo try: $0 '[debug|dev|preview|rc|rel]'
-exit 1
-fi
-
-export IMAGE
-export VERSION
-export BUILD_DATE
-export BRANCH
-export MAJOR
-
-echo version: $VERSION  build-date: $BUILD_DATE   image: $IMAGE
-docker buildx bake -f app/docker-bake.hcl $1
-
-echo -e "${BLUE} => checking docker-compose.yaml file${NC}"
-docker-compose config -q
-echo
-echo -e "${GREEN}${BUILD_DATE} => Version: ${VERSION}${NC} finished"
-echo

app/config/default_config.toml

@@ -1,64 +1,177 @@
-# configuration to reach tsun cloud
-tsun.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
-tsun.host    = 'logger.talent-monitoring.com'
-tsun.port    = 5005
+##########################################################################################
+###
+###          T S U N  -  G E N 3  -   P R O X Y
+### 
+###                from   Stefan Allius
+###
+##########################################################################################
+###
+###   The readme will give you an overview of the project:
+###   https://s-allius.github.io/tsun-gen3-proxy/
+###
+###   The proxy supports different operation modes. Select the proper mode 
+###   which depends on your inverter type and you inverter firmware. 
+###   Please read: 
+###   https://github.com/s-allius/tsun-gen3-proxy/wiki/Operation-Modes-Overview
+###
+###   Here you will find a description of all configuration options:
+###   https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml
+###
+###   The configration uses the TOML format, which aims to be easy to read due to 
+###   obvious semantics. You find more details here: https://toml.io/en/v1.0.0
+###
+##########################################################################################
 
-# configuration to reach the new tsun cloud for G3 Plus inverters
-solarman.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
-solarman.host    = 'iot.talent-monitoring.com'
-solarman.port    = 10000
 
-# mqtt broker configuration
+##########################################################################################
+##
+## MQTT broker configuration
+##
+## In this block, you must configure the connection to your MQTT broker and specify the
+## required credentials. As the proxy does not currently support an encrypted connection
+## to the MQTT broker, it is strongly recommended that you do not use a public broker.
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#mqtt-broker-account
+##
+
 mqtt.host    = 'mqtt'   # URL or IP address of the mqtt broker
 mqtt.port    = 1883
 mqtt.user    = ''
 mqtt.passwd  = ''
 
 
-# home-assistant
+##########################################################################################
+##
+## HOME ASSISTANT
+##
+## The proxy supports the MQTT autoconfiguration of Home Assistant (HA). The default 
+## values match the HA default configuration. If you need to change these or want to use
+## a different MQTT client, you can adjust the prefixes of the MQTT topics below.
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#home-assistant
+##
+
 ha.auto_conf_prefix = 'homeassistant'       # MQTT prefix for subscribing for homeassistant status updates
 ha.discovery_prefix = 'homeassistant'       # MQTT prefix for discovery topic 
 ha.entity_prefix    = 'tsun'                # MQTT topic prefix for publishing inverter values
 ha.proxy_node_id    = 'proxy'               # MQTT node id, for the proxy_node_id
 ha.proxy_unique_id  = 'P170000000000001'    # MQTT unique id, to identify a proxy instance
 
-# microinverters
-inverters.allow_all = true   # allow inverters, even if we have no inverter mapping
 
-# inverter mapping, maps a `serial_no* to a `mqtt_id` and defines an optional `suggested_place` for `home-assistant`
-#
-# for each inverter add a block starting with [inverters."<16-digit serial numbeer>"]
+##########################################################################################
+##
+## GEN3 Proxy Mode Configuration
+##
+## In this block, you can configure an optional connection to the TSUN cloud for GEN3
+## inverters. This connection is only required if you want send data to the TSUN cloud
+## to use the TSUN APPs or receive firmware updates.  
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#tsun-cloud-for-gen3-inverter-only
+##
+
+tsun.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
+tsun.host    = 'logger.talent-monitoring.com'
+tsun.port    = 5005
+
+
+##########################################################################################
+##
+## GEN3PLUS Proxy Mode Configuration
+##
+## In this block, you can configure an optional connection to the TSUN cloud for GEN3PLUS
+## inverters. This connection is only required if you want send data to the TSUN cloud
+## to use the TSUN APPs or receive firmware updates.  
+##
+## https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml#solarman-cloud-for-gen3plus-inverter-only
+##
+
+solarman.enabled = true   # false: disables connecting to the tsun cloud, and avoids updates
+solarman.host    = 'iot.talent-monitoring.com'
+solarman.port    = 10000
+
+
+##########################################################################################
+###
+### Inverter Definitions
+###
+### The proxy supports the simultaneous operation of several inverters, even of different
+### types. A configuration block must be defined for each inverter, in which all necessary
+### parameters must be specified. These depend on the operation mode used and also differ
+### slightly depending on the inverter type.
+###
+### In addition, the PV modules can be defined at the individual inputs for documentation
+### purposes, whereby these are displayed in Home Assistant.
+###
+### The proxy only accepts connections from known inverters. This can be switched off for
+### test purposes and unknown serial numbers are also accepted. 
+###
+
+inverters.allow_all = false   # only allow known inverters
+
+
+##########################################################################################
+##
+## For each GEN3 inverter, the serial number of the inverter must be mapped to an MQTT
+## definition. To do this, the corresponding configuration block is started with
+## `[Inverter.“<16-digit serial number>”]` so that all subsequent parameters are assigned
+## to this inverter. Further inverter-specific parameters (e.g. polling mode) can be set
+## in the configuration block
+##
+## The serial numbers of all GEN3 inverters start with `R17`!
+##
+
 [inverters."R170000000000001"]
-#node_id = ''                 # Optional, MQTT replacement for inverters serial number  
-#suggested_area = ''          # Optional, suggested installation area for home-assistant
-modbus_polling = false        # Disable optional MODBUS polling
-#pv1 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
-#pv2 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
+node_id = ''                 # MQTT replacement for inverters serial number  
+suggested_area = ''          # suggested installation area for home-assistant
+modbus_polling = false       # Disable optional MODBUS polling
+pv1 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
+pv2 = {type = 'RSM40-8-395M', manufacturer = 'Risen'}   # Optional, PV module descr
 
-#[inverters."R17xxxxxxxxxxxx2"]
-#node_id = ''                 # Optional, MQTT replacement for inverters serial number  
-#suggested_area = ''          # Optional, suggested installation area for home-assistant
-#modbus_polling = false        # Disable optional MODBUS polling
-#pv1 = {type = 'RSM40-8-405M', manufacturer = 'Risen'}   # Optional, PV module descr
-#pv2 = {type = 'RSM40-8-405M', manufacturer = 'Risen'}   # Optional, PV module descr
+
+##########################################################################################
+##
+## For each GEN3PLUS inverter, the serial number of the inverter must be mapped to an MQTT
+## definition. To do this, the corresponding configuration block is started with
+## `[Inverter.“<16-digit serial number>”]` so that all subsequent parameters are assigned
+## to this inverter. Further inverter-specific parameters (e.g. polling mode, client mode)
+## can be set in the configuration block
+## 
+## The serial numbers of all GEN3PLUS inverters start with `Y17` or Y47! Each GEN3PLUS
+## inverter is supplied with a “Monitoring SN:”. This can be found on a sticker enclosed
+## with the inverter.
+##
 
 [inverters."Y170000000000001"]
-monitor_sn = 2000000000       # The "Monitoring SN:" can be found on a sticker enclosed with the inverter
-#node_id = ''                 # Optional, MQTT replacement for inverters serial number  
-#suggested_area = ''          # Optional, suggested installation place for home-assistant
-modbus_polling = true         # Enable optional MODBUS polling
+monitor_sn = 2000000000      # The GEN3PLUS "Monitoring SN:"
+node_id = ''                 # MQTT replacement for inverters serial number  
+suggested_area = ''          # suggested installation place for home-assistant
+modbus_polling = true        # Enable optional MODBUS polling
 
 # if your inverter supports SSL connections you must use the client_mode. Pls, uncomment
 # the next line and configure the fixed IP of your inverter
-#client_mode = {host = '192.168.0.1', port = 8899}  
+#client_mode = {host = '192.168.0.1', port = 8899, forward = true}  
 
-#pv1 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
-#pv2 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
-#pv3 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
-#pv4 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
+pv1 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
+pv2 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
+pv3 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
+pv4 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
+
+
+##########################################################################################
+###
+### If the proxy mode is configured, commands from TSUN can be sent to the inverter via
+### this connection or parameters (e.g. network credentials) can be queried. Filters can
+### then be configured for the AT+ commands from the TSUN Cloud so that only certain
+### accesses are permitted.
+###
+### An overview of all known AT+ commands can be found here:
+### https://github.com/s-allius/tsun-gen3-proxy/wiki/AT--commands
+###
 
 [gen3plus.at_acl]
+# filter for received commands from the internet
 tsun.allow = ['AT+Z', 'AT+UPURL', 'AT+SUPDATE']
 tsun.block = []
+# filter for received commands from the MQTT broker
 mqtt.allow = ['AT+']
 mqtt.block = []

app/docker-bake.hcl

@@ -18,7 +18,7 @@ variable "DESCRIPTION" {
 }
 
 target "_common" {
-  context = "app"
+  context = "."
   dockerfile = "Dockerfile"
   args = {
     VERSION = "${VERSION}"
@@ -78,7 +78,7 @@ target "dev" {
 
 target "preview" {
   inherits = ["_common", "_prod"]
-  tags = ["${IMAGE}:dev", "${IMAGE}:${VERSION}"]
+  tags = ["${IMAGE}:preview", "${IMAGE}:${VERSION}"]
 }
 
 target "rc" {

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+<g id="edge1" class="edge">
+<title>A1&#45;&gt;A4</title>
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+<!-- A3&#45;&gt;A2 -->
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+<title>A3&#45;&gt;A2</title>
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+<!-- A3&#45;&gt;A5 -->
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+<title>A3&#45;&gt;A5</title>
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+<title>A5&#45;&gt;A9</title>
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+<!-- A11 -->
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+<title>A11</title>
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+<!-- A6&#45;&gt;A11 -->
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+<title>A6&#45;&gt;A11</title>
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+<title>A6&#45;&gt;A12</title>
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+<!-- A8 -->
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+<title>A8</title>
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+<!-- A7&#45;&gt;A8 -->
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+<title>A7&#45;&gt;A8</title>
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app/proxy.yuml

@@ -3,28 +3,34 @@
 // {generate:true}
 
 [note: You can stick notes on diagrams too!{bg:cornsilk}]
-[Singleton]^[Mqtt|<static>ha_restarts;<static>__client;<static>__cb_MqttIsUp|<async>publish();<async>close()]
-[Modbus|que;;snd_handler;rsp_handler;timeout;max_retires;last_xxx;err;retry_cnt;req_pend;tim|build_msg();recv_req();recv_resp();close()]
-[IterRegistry||__iter__]^[Message|server_side:bool;header_valid:bool;header_len:unsigned;data_len:unsigned;unique_id;node_id;sug_area;_recv_buffer:bytearray;_send_buffer:bytearray;_forward_buffer:bytearray;db:Infos;new_data:list;state|_read():void<abstract>;close():void;inc_counter():void;dec_counter():void]
-[Message]^[Talent|await_conn_resp_cnt;id_str;contact_name;contact_mail;db:InfosG3;mb:Modbus;switch|msg_contact_info();msg_ota_update();msg_get_time();msg_collector_data();msg_inverter_data();msg_unknown();;close()]
-[Message]^[SolarmanV5|control;serial;snr;db:InfosG3P;mb:Modbus;switch|msg_unknown();;close()]
-[Talent]^[ConnectionG3|remote_stream:ConnectionG3|healthy();close()]
-[Talent]has-1>[Modbus]
-[SolarmanV5]^[ConnectionG3P|remote_stream:ConnectionG3P|healthy();close()]
-[SolarmanV5]has-1>[Modbus]
-[AsyncStream|reader;writer;addr;r_addr;l_addr|<async>server_loop();<async>client_loop();<async>loop;disc();close();;__async_read();async_write();__async_forward()]^[ConnectionG3]
-[AsyncStream]^[ConnectionG3P]
-[Inverter|cls.db_stat;cls.entity_prfx;cls.discovery_prfx;cls.proxy_node_id;cls.proxy_unique_id;cls.mqtt:Mqtt|]^[InverterG3|__ha_restarts|async_create_remote();async_publ_mqtt();;close()]
-[Inverter]^[InverterG3P|__ha_restarts|async_create_remote(;)async_publ_mqtt();close()]
-[Mqtt]-[Inverter]
-[ConnectionG3]^[InverterG3]
-[ConnectionG3]has-0..1>[ConnectionG3]
-[ConnectionG3P]^[InverterG3P]
-[ConnectionG3P]has-0..1>[ConnectionG3P]
+[<<AbstractIterMeta>>||__iter__()]
+
+[Mqtt;<<Singleton>>|<static>ha_restarts;<static>__client;<static>__cb_MqttIsUp|<async>publish();<async>close()]
+[Proxy|<cls>db_stat;<cls>entity_prfx;<cls>discovery_prfx;<cls>proxy_node_id;<cls>proxy_unique_id;<cls>mqtt:Mqtt;;__ha_restarts|class_init();class_close();;<async>_cb_mqtt_is_up();<async>_register_proxy_stat_home_assistant();<async>_async_publ_mqtt_proxy_stat(key)]
+
+[<<InverterIfc>>||healthy()->bool;<async>disc(shutdown_started=False);<async>create_remote();]
+[<<AbstractIterMeta>>]^-.-[<<InverterIfc>>]
+[InverterBase|_registry;__ha_restarts;;addr;config_id:str;prot_class:MessageProt;remote:StreamPtr;local:StreamPtr;|healthy()->bool;<async>disc(shutdown_started=False);<async>create_remote();<async>async_publ_mqtt()]
+[StreamPtr||stream:ProtocolIfc;ifc:AsyncIfc]
+[<<InverterIfc>>]^-.-[InverterBase]
+[InverterG3]-[note: Creates an GEN3 inverter instance with prot_class:Talent{bg:cornsilk}]
+[InverterG3P]-[note: Creates an GEN3PLUS inverter instance with prot_class:SolarmanV5{bg:cornsilk}]
+[InverterBase]^[InverterG3]
+[InverterBase]^[InverterG3P]
+[Proxy]^[InverterBase]
+[InverterBase]-2>[StreamPtr]
+[Proxy]++->[Mqtt;<<Singleton>>]
+
+[<<AsyncIfc>>]
+
+
+[StreamPtr]-1>[<<ProtocolIfc>>]
+[StreamPtr]-1>[<<AsyncIfc>>]
+
+
+[<<ProtocolIfc>>]use-.->[<<AsyncIfc>>]
+
 
-[Infos|stat;new_stat_data;info_dev|static_init();dev_value();inc_counter();dec_counter();ha_proxy_conf;ha_conf;ha_remove;update_db;set_db_def_value;get_db_value;ignore_this_device]^[InfosG3||ha_confs();parse()]
-[Infos]^[InfosG3P||ha_confs();parse()]
-[InfosG3P]->[SolarmanV5]
-[InfosG3]->[Talent]
 [ModbusConn|host;port;addr;stream:InverterG3P;|]has-1>[InverterG3P]
+[ModbusTcp]creates-*>[ModbusConn]
 

app/proxy_2.svg

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+<!-- A4 -->
+<g id="node5" class="node">
+<title>A4</title>
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+<text text-anchor="middle" x="232.066" y="-299" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">remote:StreamPtr</text>
+</g>
+<!-- A2&#45;&gt;A4 -->
+<g id="edge2" class="edge">
+<title>A2&#45;&gt;A4</title>
+<path fill="none" stroke="#000000" d="M229.12,-537.6831C229.9778,-469.0527 231.1375,-376.283 231.7124,-330.2853"/>
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+<!-- A8 -->
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+<title>A8</title>
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+<text text-anchor="start" x="290.6175" y="-113" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">AsyncStreamServer</text>
+<polygon fill="none" stroke="#000000" points="246.066,-68 246.066,-100 424.066,-100 424.066,-68 246.066,-68"/>
+<text text-anchor="start" x="302.837" y="-81" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">create_remote</text>
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+<text text-anchor="start" x="286.7235" y="-49" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;server_loop()</text>
+<text text-anchor="start" x="277.5545" y="-37" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;_async_forward()</text>
+<text text-anchor="start" x="255.875" y="-25" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;publish_outstanding_mqtt()</text>
+<text text-anchor="start" x="320.0685" y="-13" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A3&#45;&gt;A8 -->
+<g id="edge8" class="edge">
+<title>A3&#45;&gt;A8</title>
+<path fill="none" stroke="#000000" d="M349.8809,-271.6651C347.5364,-239.1181 343.722,-186.1658 340.5509,-142.1431"/>
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+</g>
+<!-- A9 -->
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+<title>A9</title>
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+<text text-anchor="start" x="100.563" y="-95" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">AsyncStreamClient</text>
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+<text text-anchor="start" x="96.944" y="-43" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;client_loop()</text>
+<text text-anchor="start" x="83.89" y="-31" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;_async_forward())</text>
+</g>
+<!-- A4&#45;&gt;A9 -->
+<g id="edge10" class="edge">
+<title>A4&#45;&gt;A9</title>
+<path fill="none" stroke="#000000" d="M225.2301,-283.8733C212.4699,-250.0372 184.5329,-175.9573 164.7878,-123.5994"/>
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+<text text-anchor="middle" x="210.9254" y="-266.8956" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">0..1</text>
+</g>
+<!-- A5 -->
+<g id="node6" class="node">
+<title>A5</title>
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+<text text-anchor="start" x="156.995" y="-1127" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;&lt;AsyncIfc&gt;&gt;</text>
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+<text text-anchor="start" x="157.002" y="-1075" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">set_node_id()</text>
+<text text-anchor="start" x="155.332" y="-1063" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">get_conn_no()</text>
+<text text-anchor="start" x="169.2295" y="-1039" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_add()</text>
+<text text-anchor="start" x="167.01" y="-1027" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_flush()</text>
+<text text-anchor="start" x="170.6195" y="-1015" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_get()</text>
+<text text-anchor="start" x="166.7295" y="-1003" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_peek()</text>
+<text text-anchor="start" x="170.8995" y="-991" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_log()</text>
+<text text-anchor="start" x="166.735" y="-979" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_clear()</text>
+<text text-anchor="start" x="170.8995" y="-967" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_len()</text>
+<text text-anchor="start" x="165.3405" y="-943" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">fwd_add()</text>
+<text text-anchor="start" x="167.0105" y="-931" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">fwd_log()</text>
+<text text-anchor="start" x="170.3445" y="-919" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_get()</text>
+<text text-anchor="start" x="166.4545" y="-907" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_peek()</text>
+<text text-anchor="start" x="170.6245" y="-895" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_log()</text>
+<text text-anchor="start" x="166.46" y="-883" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_clear()</text>
+<text text-anchor="start" x="170.6245" y="-871" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_len()</text>
+<text text-anchor="start" x="162.565" y="-859" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_set_cb()</text>
+<text text-anchor="start" x="138.9455" y="-835" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">prot_set_timeout_cb()</text>
+</g>
+<!-- A6 -->
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+<title>A6</title>
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+<text text-anchor="start" x="84.23" y="-665" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">AsyncIfcImpl</text>
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+<text text-anchor="start" x="75.614" y="-633" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">fwd_fifo:ByteFifo</text>
+<text text-anchor="start" x="79.503" y="-621" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_fifo:ByteFifo</text>
+<text text-anchor="start" x="79.228" y="-609" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_fifo:ByteFifo</text>
+<text text-anchor="start" x="78.662" y="-597" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">conn_no:Count</text>
+<text text-anchor="start" x="94.7795" y="-585" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">node_id</text>
+<text text-anchor="start" x="88.1155" y="-573" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">timeout_cb</text>
+</g>
+<!-- A5&#45;&gt;A6 -->
+<g id="edge3" class="edge">
+<title>A5&#45;&gt;A6</title>
+<path fill="none" stroke="#000000" stroke-dasharray="5,2" d="M151.3775,-811.7434C141.9017,-766.0069 132.2713,-719.5241 124.914,-684.013"/>
+<polygon fill="none" stroke="#000000" points="148.0039,-812.7126 153.4599,-821.7945 154.8583,-811.2924 148.0039,-812.7126"/>
+</g>
+<!-- A7 -->
+<g id="node8" class="node">
+<title>A7</title>
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+<text text-anchor="start" x="80.34" y="-403" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">AsyncStream</text>
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+<text text-anchor="start" x="95.619" y="-371" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">reader</text>
+<text text-anchor="start" x="97.849" y="-359" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">writer</text>
+<text text-anchor="start" x="100.063" y="-347" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">addr</text>
+<text text-anchor="start" x="95.619" y="-335" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">r_addr</text>
+<text text-anchor="start" x="96.174" y="-323" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">l_addr</text>
+<polygon fill="none" stroke="#000000" points="59.066,-182 59.066,-310 161.066,-310 161.066,-182 59.066,-182"/>
+<text text-anchor="start" x="81.72" y="-279" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;loop</text>
+<text text-anchor="start" x="97.848" y="-267" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">disc()</text>
+<text text-anchor="start" x="95.0685" y="-255" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+<text text-anchor="start" x="90.62" y="-243" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">healthy()</text>
+<text text-anchor="start" x="75.3365" y="-219" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__async_read()</text>
+<text text-anchor="start" x="74.787" y="-207" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__async_write()</text>
+<text text-anchor="start" x="68.673" y="-195" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__async_forward()</text>
+</g>
+<!-- A6&#45;&gt;A7 -->
+<g id="edge4" class="edge">
+<title>A6&#45;&gt;A7</title>
+<path fill="none" stroke="#000000" d="M111.6134,-549.5774C111.3784,-511.9877 111.0852,-465.0771 110.8174,-422.2295"/>
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+<!-- A7&#45;&gt;A8 -->
+<g id="edge5" class="edge">
+<title>A7&#45;&gt;A8</title>
+<path fill="none" stroke="#000000" d="M167.5272,-185.0204C168.3649,-184.0001 169.2111,-182.9929 170.066,-182 191.4283,-157.1889 219.1964,-135.0276 245.8416,-116.8901"/>
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+<!-- A7&#45;&gt;A9 -->
+<g id="edge6" class="edge">
+<title>A7&#45;&gt;A9</title>
+<path fill="none" stroke="#000000" d="M128.2709,-171.8077C131.1447,-151.2556 133.9487,-131.2022 136.3294,-114.1772"/>
+<polygon fill="none" stroke="#000000" points="124.7747,-171.5375 126.856,-181.9259 131.7072,-172.5069 124.7747,-171.5375"/>
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+<!-- A10 -->
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+<title>A10</title>
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+<text text-anchor="start" x="332.889" y="-721" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">conn_no</text>
+<text text-anchor="start" x="342.063" y="-709" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">addr</text>
+<text text-anchor="start" x="304.829" y="-685" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">await_conn_resp_cnt</text>
+<text text-anchor="start" x="339.8435" y="-673" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">id_str</text>
+<text text-anchor="start" x="320.666" y="-661" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">contact_name</text>
+<text text-anchor="start" x="324.006" y="-649" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">contact_mail</text>
+<text text-anchor="start" x="327.6105" y="-637" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">db:InfosG3</text>
+<text text-anchor="start" x="325.95" y="-625" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">mb:Modbus</text>
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+<text text-anchor="start" x="309.5585" y="-581" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_contact_info()</text>
+<text text-anchor="start" x="311.4985" y="-569" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_ota_update()</text>
+<text text-anchor="start" x="317.3425" y="-557" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_get_time()</text>
+<text text-anchor="start" x="305.3945" y="-545" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_collector_data()</text>
+<text text-anchor="start" x="307.3395" y="-533" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_inverter_data()</text>
+<text text-anchor="start" x="316.5065" y="-521" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_unknown()</text>
+<text text-anchor="start" x="332.62" y="-497" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">healthy()</text>
+<text text-anchor="start" x="337.0685" y="-485" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A10&#45;&gt;A3 -->
+<g id="edge7" class="edge">
+<title>A10&#45;&gt;A3</title>
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+<!-- A10&#45;&gt;A4 -->
+<g id="edge9" class="edge">
+<title>A10&#45;&gt;A4</title>
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+<text text-anchor="middle" x="253.125" y="-331.0849" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">0..1</text>
+</g>
+<!-- A12 -->
+<g id="node13" class="node">
+<title>A12</title>
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+<text text-anchor="start" x="448.059" y="-331" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">InfosG3</text>
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+<text text-anchor="start" x="441.95" y="-279" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">ha_confs()</text>
+<text text-anchor="start" x="449.734" y="-267" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">parse()</text>
+</g>
+<!-- A10&#45;&gt;A12 -->
+<g id="edge12" class="edge">
+<title>A10&#45;&gt;A12</title>
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+</g>
+<!-- A11 -->
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+<title>A11</title>
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+<text text-anchor="start" x="468.728" y="-723" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">Infos</text>
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+<text text-anchor="start" x="471.5075" y="-691" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">stat</text>
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+<text text-anchor="start" x="460.6695" y="-667" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">info_dev</text>
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+<text text-anchor="start" x="455.4015" y="-635" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">static_init()</text>
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+<text text-anchor="start" x="450.3965" y="-611" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">inc_counter()</text>
+<text text-anchor="start" x="448.7265" y="-599" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">dec_counter()</text>
+<text text-anchor="start" x="446.776" y="-587" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">ha_proxy_conf</text>
+<text text-anchor="start" x="461.779" y="-575" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">ha_conf</text>
+<text text-anchor="start" x="454.56" y="-563" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">ha_remove</text>
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+<text text-anchor="start" x="440.103" y="-539" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">set_db_def_value</text>
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+<text text-anchor="start" x="437.8885" y="-515" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">ignore_this_device</text>
+</g>
+<!-- A11&#45;&gt;A12 -->
+<g id="edge11" class="edge">
+<title>A11&#45;&gt;A12</title>
+<path fill="none" stroke="#000000" d="M473.3644,-491.6786C471.1803,-441.7544 468.8213,-387.8351 467.1788,-350.293"/>
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+<title>A13&#45;&gt;A5</title>
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+<title>A15&#45;&gt;A13</title>
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app/proxy_2.yuml

@@ -0,0 +1,43 @@
+// {type:class}
+// {direction:topDown}
+// {generate:true}
+
+[note: Example of instantiation for a GEN3 inverter!{bg:cornsilk}]
+[<<AbstractIterMeta>>||__iter__()]
+
+[InverterG3|addr;remote:StreamPtr;local:StreamPtr|create_remote();;close()]
+[InverterG3]++->[local:StreamPtr]
+[InverterG3]++->[remote:StreamPtr]
+
+[<<AsyncIfc>>||set_node_id();get_conn_no();;tx_add();tx_flush();tx_get();tx_peek();tx_log();tx_clear();tx_len();;fwd_add();fwd_log();rx_get();rx_peek();rx_log();rx_clear();rx_len();rx_set_cb();;prot_set_timeout_cb()]
+[AsyncIfcImpl|fwd_fifo:ByteFifo;tx_fifo:ByteFifo;rx_fifo:ByteFifo;conn_no:Count;node_id;timeout_cb]
+[AsyncStream|reader;writer;addr;r_addr;l_addr|;<async>loop;disc();close();healthy();;__async_read();__async_write();__async_forward()]
+[AsyncStreamServer|create_remote|<async>server_loop();<async>_async_forward();<async>publish_outstanding_mqtt();close()]
+[AsyncStreamClient||<async>client_loop();<async>_async_forward())]
+[<<AsyncIfc>>]^-.-[AsyncIfcImpl]
+[AsyncIfcImpl]^[AsyncStream]
+[AsyncStream]^[AsyncStreamServer]
+[AsyncStream]^[AsyncStreamClient]
+
+
+[Talent|conn_no;addr;;await_conn_resp_cnt;id_str;contact_name;contact_mail;db:InfosG3;mb:Modbus;switch|msg_contact_info();msg_ota_update();msg_get_time();msg_collector_data();msg_inverter_data();msg_unknown();;healthy();close()]
+[Talent]<-++[local:StreamPtr]
+[local:StreamPtr]++->[AsyncStreamServer]
+[Talent]<-0..1[remote:StreamPtr]
+[remote:StreamPtr]0..1->[AsyncStreamClient]
+
+[Infos|stat;new_stat_data;info_dev|static_init();dev_value();inc_counter();dec_counter();ha_proxy_conf;ha_conf;ha_remove;update_db;set_db_def_value;get_db_value;ignore_this_device]
+[Infos]^[InfosG3||ha_confs();parse()]
+
+[Talent]->[InfosG3]
+
+[Message|server_side:bool;mb:Modbus;ifc:AsyncIfc;node_id;header_valid:bool;header_len;data_len;unique_id;sug_area:str;new_data:dict;state:State;shutdown_started:bool;modbus_elms;mb_timer:Timer;mb_timeout;mb_first_timeout;modbus_polling:bool|_set_mqtt_timestamp();_timeout();_send_modbus_cmd();<async> end_modbus_cmd();close();inc_counter();dec_counter()]
+[Message]use->[<<AsyncIfc>>]
+
+[<<ProtocolIfc>>|_registry|close()]
+[<<AbstractIterMeta>>]^-.-[<<ProtocolIfc>>]
+[<<ProtocolIfc>>]^-.-[Message]
+[Message]^[Talent]
+
+[Modbus|que;;snd_handler;rsp_handler;timeout;max_retires;last_xxx;err;retry_cnt;req_pend;tim|build_msg();recv_req();recv_resp();close()]
+[Modbus]<0..1-has[Message]

app/proxy_3.svg

@@ -0,0 +1,364 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
+ "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<!-- Generated by graphviz version 2.40.1 (20161225.0304)
+ -->
+<!-- Title: G Pages: 1 -->
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+ viewBox="0.00 0.00 538.62 1940.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 1936)">
+<title>G</title>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-1936 534.6165,-1936 534.6165,4 -4,4"/>
+<!-- A0 -->
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+<title>A0</title>
+<polygon fill="#fff8dc" stroke="#000000" points="114.3497,-1912 -.1167,-1912 -.1167,-1868 120.3497,-1868 120.3497,-1906 114.3497,-1912"/>
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+<polyline fill="none" stroke="#000000" points="120.3497,-1906 114.3497,-1906 "/>
+<text text-anchor="middle" x="60.1165" y="-1899" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">Example of</text>
+<text text-anchor="middle" x="60.1165" y="-1887" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">instantiation for a</text>
+<text text-anchor="middle" x="60.1165" y="-1875" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">GEN3PLUS inverter!</text>
+</g>
+<!-- A1 -->
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+<title>A1</title>
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+<text text-anchor="start" x="147.7655" y="-1913" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;&lt;AbstractIterMeta&gt;&gt;</text>
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+<text text-anchor="start" x="174.7265" y="-1861" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__iter__()</text>
+</g>
+<!-- A14 -->
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+<title>A14</title>
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+<text text-anchor="start" x="160.823" y="-1701" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;&lt;ProtocolIfc&gt;&gt;</text>
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+<text text-anchor="start" x="176.95" y="-1669" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">_registry</text>
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+<text text-anchor="start" x="181.119" y="-1637" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A1&#45;&gt;A14 -->
+<g id="edge14" class="edge">
+<title>A1&#45;&gt;A14</title>
+<path fill="none" stroke="#000000" stroke-dasharray="5,2" d="M196.1165,-1837.756C196.1165,-1802.0883 196.1165,-1755.1755 196.1165,-1720.3644"/>
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+<!-- A2 -->
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+<title>A2</title>
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+<text text-anchor="start" x="241.1135" y="-613" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">addr</text>
+<text text-anchor="start" x="211.6695" y="-601" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">remote:StreamPtr</text>
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+<text text-anchor="start" x="215.5585" y="-557" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">create_remote()</text>
+<text text-anchor="start" x="236.119" y="-533" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A3 -->
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+<title>A3</title>
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+</g>
+<!-- A2&#45;&gt;A3 -->
+<g id="edge1" class="edge">
+<title>A2&#45;&gt;A3</title>
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+</g>
+<!-- A2&#45;&gt;A4 -->
+<g id="edge2" class="edge">
+<title>A2&#45;&gt;A4</title>
+<path fill="none" stroke="#000000" d="M251.1165,-507.5905C251.1165,-447.68 251.1165,-370.9429 251.1165,-330.266"/>
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+<text text-anchor="start" x="321.8875" y="-81" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">create_remote</text>
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+<text text-anchor="start" x="305.774" y="-49" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;server_loop()</text>
+<text text-anchor="start" x="296.605" y="-37" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;_async_forward()</text>
+<text text-anchor="start" x="274.9255" y="-25" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;publish_outstanding_mqtt()</text>
+<text text-anchor="start" x="339.119" y="-13" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A3&#45;&gt;A8 -->
+<g id="edge8" class="edge">
+<title>A3&#45;&gt;A8</title>
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+</g>
+<!-- A9 -->
+<g id="node10" class="node">
+<title>A9</title>
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+<polygon fill="none" stroke="#000000" points="93.1165,-18 93.1165,-62 231.1165,-62 231.1165,-18 93.1165,-18"/>
+<text text-anchor="start" x="115.9945" y="-43" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;client_loop()</text>
+<text text-anchor="start" x="102.9405" y="-31" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt;_async_forward())</text>
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+<!-- A4&#45;&gt;A9 -->
+<g id="edge10" class="edge">
+<title>A4&#45;&gt;A9</title>
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+<text text-anchor="middle" x="229.9759" y="-266.8956" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">0..1</text>
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+<!-- A5 -->
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+<title>A5</title>
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+<text text-anchor="start" x="173.0525" y="-1015" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">set_node_id()</text>
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+<text text-anchor="start" x="185.28" y="-979" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_add()</text>
+<text text-anchor="start" x="183.0605" y="-967" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_flush()</text>
+<text text-anchor="start" x="186.67" y="-955" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_get()</text>
+<text text-anchor="start" x="182.78" y="-943" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_peek()</text>
+<text text-anchor="start" x="186.95" y="-931" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_log()</text>
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+<text text-anchor="start" x="186.95" y="-907" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tx_len()</text>
+<text text-anchor="start" x="181.391" y="-883" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">fwd_add()</text>
+<text text-anchor="start" x="183.061" y="-871" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">fwd_log()</text>
+<text text-anchor="start" x="186.395" y="-859" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_get()</text>
+<text text-anchor="start" x="182.505" y="-847" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_peek()</text>
+<text text-anchor="start" x="186.675" y="-835" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_log()</text>
+<text text-anchor="start" x="182.5105" y="-823" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_clear()</text>
+<text text-anchor="start" x="186.675" y="-811" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rx_len()</text>
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+<text text-anchor="start" x="154.996" y="-775" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">prot_set_timeout_cb()</text>
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+<!-- A6 -->
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+<title>A6</title>
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+<text text-anchor="start" x="109.166" y="-543" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">timeout_cb</text>
+</g>
+<!-- A5&#45;&gt;A6 -->
+<g id="edge3" class="edge">
+<title>A5&#45;&gt;A6</title>
+<path fill="none" stroke="#000000" stroke-dasharray="5,2" d="M166.8518,-752.0017C159.4629,-716.9571 152.1492,-682.2694 146.2303,-654.1971"/>
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+<!-- A7 -->
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+<title>A7</title>
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+<text text-anchor="start" x="116.8985" y="-267" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">disc()</text>
+<text text-anchor="start" x="114.119" y="-255" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+<text text-anchor="start" x="109.6705" y="-243" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">healthy()</text>
+<text text-anchor="start" x="94.387" y="-219" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__async_read()</text>
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+<text text-anchor="start" x="87.7235" y="-195" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">__async_forward()</text>
+</g>
+<!-- A6&#45;&gt;A7 -->
+<g id="edge4" class="edge">
+<title>A6&#45;&gt;A7</title>
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+<!-- A7&#45;&gt;A8 -->
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+<title>A7&#45;&gt;A8</title>
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+<!-- A7&#45;&gt;A9 -->
+<g id="edge6" class="edge">
+<title>A7&#45;&gt;A9</title>
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+<!-- A10 -->
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+<title>A10</title>
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+<text text-anchor="start" x="329.057" y="-533" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">msg_unknown()</text>
+<text text-anchor="start" x="345.1705" y="-509" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">healthy()</text>
+<text text-anchor="start" x="349.619" y="-497" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A10&#45;&gt;A3 -->
+<g id="edge7" class="edge">
+<title>A10&#45;&gt;A3</title>
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+<!-- A10&#45;&gt;A4 -->
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+<title>A10&#45;&gt;A4</title>
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+<!-- A12 -->
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+<title>A12</title>
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+<!-- A10&#45;&gt;A12 -->
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+<title>A10&#45;&gt;A12</title>
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+<!-- A11 -->
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+<text text-anchor="start" x="455.452" y="-605" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">static_init()</text>
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+<text text-anchor="start" x="450.447" y="-581" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">inc_counter()</text>
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+<!-- A11&#45;&gt;A12 -->
+<g id="edge11" class="edge">
+<title>A11&#45;&gt;A12</title>
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+<!-- A13 -->
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+<text text-anchor="start" x="228.83" y="-1409" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">node_id</text>
+<text text-anchor="start" x="207.1595" y="-1397" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">header_valid:bool</text>
+<text text-anchor="start" x="221.6065" y="-1385" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">header_len</text>
+<text text-anchor="start" x="227.4405" y="-1373" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">data_len</text>
+<text text-anchor="start" x="224.941" y="-1361" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">unique_id</text>
+<text text-anchor="start" x="218.8315" y="-1349" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">sug_area:str</text>
+<text text-anchor="start" x="215.7725" y="-1337" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">new_data:dict</text>
+<text text-anchor="start" x="222.7165" y="-1325" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">state:State</text>
+<text text-anchor="start" x="196.321" y="-1313" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">shutdown_started:bool</text>
+<text text-anchor="start" x="215.501" y="-1301" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">modbus_elms</text>
+<text text-anchor="start" x="211.6235" y="-1289" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">mb_timer:Timer</text>
+<text text-anchor="start" x="220.5015" y="-1277" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">mb_timeout</text>
+<text text-anchor="start" x="209.669" y="-1265" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">mb_first_timeout</text>
+<text text-anchor="start" x="200.7705" y="-1253" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">modbus_polling:bool</text>
+<polygon fill="none" stroke="#000000" points="172.1165,-1136 172.1165,-1240 321.1165,-1240 321.1165,-1136 172.1165,-1136"/>
+<text text-anchor="start" x="195.501" y="-1221" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">_set_mqtt_timestamp()</text>
+<text text-anchor="start" x="224.1165" y="-1209" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">_timeout()</text>
+<text text-anchor="start" x="196.884" y="-1197" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">_send_modbus_cmd()</text>
+<text text-anchor="start" x="181.876" y="-1185" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">&lt;async&gt; end_modbus_cmd()</text>
+<text text-anchor="start" x="231.619" y="-1173" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+<text text-anchor="start" x="217.447" y="-1161" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">inc_counter()</text>
+<text text-anchor="start" x="215.777" y="-1149" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">dec_counter()</text>
+</g>
+<!-- A13&#45;&gt;A5 -->
+<g id="edge13" class="edge">
+<title>A13&#45;&gt;A5</title>
+<path fill="none" stroke="#000000" d="M226.347,-1135.7758C224.8967,-1122.5547 223.4359,-1109.2373 221.9911,-1096.0662"/>
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+<text text-anchor="middle" x="215.9686" y="-1115.6794" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">use</text>
+</g>
+<!-- A13&#45;&gt;A10 -->
+<g id="edge16" class="edge">
+<title>A13&#45;&gt;A10</title>
+<path fill="none" stroke="#000000" d="M277.1595,-1125.5329C299.2708,-989.8666 328.1962,-812.3923 346.4719,-700.2604"/>
+<polygon fill="none" stroke="#000000" points="273.6668,-1125.205 275.5125,-1135.6378 280.5757,-1126.3311 273.6668,-1125.205"/>
+</g>
+<!-- A14&#45;&gt;A13 -->
+<g id="edge15" class="edge">
+<title>A14&#45;&gt;A13</title>
+<path fill="none" stroke="#000000" stroke-dasharray="5,2" d="M204.2906,-1613.8004C208.8542,-1581.3079 214.8136,-1538.8764 220.7975,-1496.2713"/>
+<polygon fill="none" stroke="#000000" points="200.7847,-1613.5986 202.8597,-1623.9883 207.7166,-1614.5723 200.7847,-1613.5986"/>
+</g>
+<!-- A15 -->
+<g id="node16" class="node">
+<title>A15</title>
+<polygon fill="none" stroke="#000000" points="260.1165,-1766 260.1165,-1798 335.1165,-1798 335.1165,-1766 260.1165,-1766"/>
+<text text-anchor="start" x="279.834" y="-1779" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">Modbus</text>
+<polygon fill="none" stroke="#000000" points="260.1165,-1614 260.1165,-1766 335.1165,-1766 335.1165,-1614 260.1165,-1614"/>
+<text text-anchor="start" x="289.278" y="-1747" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">que</text>
+<text text-anchor="start" x="270.1065" y="-1723" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">snd_handler</text>
+<text text-anchor="start" x="271.2215" y="-1711" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">rsp_handler</text>
+<text text-anchor="start" x="281.225" y="-1699" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">timeout</text>
+<text text-anchor="start" x="271.506" y="-1687" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">max_retires</text>
+<text text-anchor="start" x="279.5585" y="-1675" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">last_xxx</text>
+<text text-anchor="start" x="291.508" y="-1663" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">err</text>
+<text text-anchor="start" x="278.17" y="-1651" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">retry_cnt</text>
+<text text-anchor="start" x="276.4955" y="-1639" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">req_pend</text>
+<text text-anchor="start" x="290.953" y="-1627" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">tim</text>
+<polygon fill="none" stroke="#000000" points="260.1165,-1546 260.1165,-1614 335.1165,-1614 335.1165,-1546 260.1165,-1546"/>
+<text text-anchor="start" x="271.5065" y="-1595" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">build_msg()</text>
+<text text-anchor="start" x="274.8405" y="-1583" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">recv_req()</text>
+<text text-anchor="start" x="272.3405" y="-1571" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">recv_resp()</text>
+<text text-anchor="start" x="282.619" y="-1559" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">close()</text>
+</g>
+<!-- A15&#45;&gt;A13 -->
+<g id="edge17" class="edge">
+<title>A15&#45;&gt;A13</title>
+<path fill="none" stroke="#000000" d="M277.6392,-1536.041C275.7633,-1522.9463 273.8413,-1509.5297 271.9169,-1496.0971"/>
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+<text text-anchor="middle" x="282.8544" y="-1509.8414" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">has</text>
+<text text-anchor="middle" x="268.1266" y="-1526.2424" font-family="Helvetica,sans-Serif" font-size="10.00" fill="#000000">0..1</text>
+</g>
+</g>
+</svg>

app/proxy_3.yuml

@@ -0,0 +1,42 @@
+// {type:class}
+// {direction:topDown}
+// {generate:true}
+
+[note: Example of instantiation for a GEN3PLUS inverter!{bg:cornsilk}]
+[<<AbstractIterMeta>>||__iter__()]
+
+[InverterG3P|addr;remote:StreamPtr;local:StreamPtr|create_remote();;close()]
+[InverterG3P]++->[local:StreamPtr]
+[InverterG3P]++->[remote:StreamPtr]
+
+[<<AsyncIfc>>||set_node_id();get_conn_no();;tx_add();tx_flush();tx_get();tx_peek();tx_log();tx_clear();tx_len();;fwd_add();fwd_log();rx_get();rx_peek();rx_log();rx_clear();rx_len();rx_set_cb();;prot_set_timeout_cb()]
+[AsyncIfcImpl|fwd_fifo:ByteFifo;tx_fifo:ByteFifo;rx_fifo:ByteFifo;conn_no:Count;node_id;timeout_cb]
+[AsyncStream|reader;writer;addr;r_addr;l_addr|;<async>loop;disc();close();healthy();;__async_read();__async_write();__async_forward()]
+[AsyncStreamServer|create_remote|<async>server_loop();<async>_async_forward();<async>publish_outstanding_mqtt();close()]
+[AsyncStreamClient||<async>client_loop();<async>_async_forward())]
+[<<AsyncIfc>>]^-.-[AsyncIfcImpl]
+[AsyncIfcImpl]^[AsyncStream]
+[AsyncStream]^[AsyncStreamServer]
+[AsyncStream]^[AsyncStreamClient]
+
+[SolarmanV5|conn_no;addr;;control;serial;snr;db:InfosG3P;switch|msg_unknown();;healthy();close()]
+[SolarmanV5]<-++[local:StreamPtr]
+[local:StreamPtr]++->[AsyncStreamServer]
+[SolarmanV5]<-0..1[remote:StreamPtr]
+[remote:StreamPtr]0..1->[AsyncStreamClient]
+
+[Infos|stat;new_stat_data;info_dev|static_init();dev_value();inc_counter();dec_counter();ha_proxy_conf;ha_conf;ha_remove;update_db;set_db_def_value;get_db_value;ignore_this_device]
+[Infos]^[InfosG3P||ha_confs();parse()]
+
+[SolarmanV5]->[InfosG3P]
+
+[Message|server_side:bool;mb:Modbus;ifc:AsyncIfc;node_id;header_valid:bool;header_len;data_len;unique_id;sug_area:str;new_data:dict;state:State;shutdown_started:bool;modbus_elms;mb_timer:Timer;mb_timeout;mb_first_timeout;modbus_polling:bool|_set_mqtt_timestamp();_timeout();_send_modbus_cmd();<async> end_modbus_cmd();close();inc_counter();dec_counter()]
+[Message]use->[<<AsyncIfc>>]
+
+[<<ProtocolIfc>>|_registry|close()]
+[<<AbstractIterMeta>>]^-.-[<<ProtocolIfc>>]
+[<<ProtocolIfc>>]^-.-[Message]
+[Message]^[SolarmanV5]
+
+[Modbus|que;;snd_handler;rsp_handler;timeout;max_retires;last_xxx;err;retry_cnt;req_pend;tim|build_msg();recv_req();recv_resp();close()]
+[Modbus]<0..1-has[Message]

app/requirements-test.txt

@@ -2,5 +2,7 @@
     pytest
     pytest-asyncio
     pytest-cov
+    python-dotenv
     mock
-    coverage
+    coverage
+    jinja2-cli

app/requirements.txt

@@ -1,4 +1,4 @@
-    aiomqtt==2.2.0
+    aiomqtt==2.3.0
     schema==0.7.7
     aiocron==1.8
-    aiohttp==3.10.2
+    aiohttp==3.11.11

app/src/async_ifc.py

@@ -0,0 +1,104 @@
+from abc import ABC, abstractmethod
+
+
+class AsyncIfc(ABC):
+    @abstractmethod
+    def get_conn_no(self):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def set_node_id(self, value: str):
+        pass  # pragma: no cover
+
+    #
+    #  TX - QUEUE
+    #
+    @abstractmethod
+    def tx_add(self, data: bytearray):
+        ''' add data to transmit queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def tx_flush(self):
+        ''' send transmit queue and clears it'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def tx_peek(self, size: int = None) -> bytearray:
+        '''returns size numbers of byte without removing them'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def tx_log(self, level, info):
+        ''' log the transmit queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def tx_clear(self):
+        ''' clear transmit queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def tx_len(self):
+        ''' get numner of bytes in the transmit queue'''
+        pass  # pragma: no cover
+
+    #
+    #  FORWARD - QUEUE
+    #
+    @abstractmethod
+    def fwd_add(self, data: bytearray):
+        ''' add data to forward queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def fwd_log(self, level, info):
+        ''' log the forward queue'''
+        pass  # pragma: no cover
+
+    #
+    #  RX - QUEUE
+    #
+    @abstractmethod
+    def rx_get(self, size: int = None) -> bytearray:
+        '''removes size numbers of bytes and return them'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def rx_peek(self, size: int = None) -> bytearray:
+        '''returns size numbers of byte without removing them'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def rx_log(self, level, info):
+        ''' logs the receive queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def rx_clear(self):
+        ''' clear receive queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def rx_len(self):
+        ''' get numner of bytes in the receive queue'''
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def rx_set_cb(self, callback):
+        pass  # pragma: no cover
+
+    #
+    #  Protocol Callbacks
+    #
+    @abstractmethod
+    def prot_set_timeout_cb(self, callback):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def prot_set_init_new_client_conn_cb(self, callback):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def prot_set_update_header_cb(self, callback):
+        pass  # pragma: no cover

app/src/async_stream.py

@@ -6,18 +6,131 @@ from asyncio import StreamReader, StreamWriter
 from typing import Self
 from itertools import count
 
-if __name__ == "app.src.async_stream":
-    from app.src.messages import hex_dump_memory, State
-else:  # pragma: no cover
-    from messages import hex_dump_memory, State
+from proxy import Proxy
+from byte_fifo import ByteFifo
+from async_ifc import AsyncIfc
+from infos import Infos
 
 
 import gc
 logger = logging.getLogger('conn')
 
 
-class AsyncStream():
+class AsyncIfcImpl(AsyncIfc):
     _ids = count(0)
+
+    def __init__(self) -> None:
+        logger.debug('AsyncIfcImpl.__init__')
+        self.fwd_fifo = ByteFifo()
+        self.tx_fifo = ByteFifo()
+        self.rx_fifo = ByteFifo()
+        self.conn_no = next(self._ids)
+        self.node_id = ''
+        self.timeout_cb = None
+        self.init_new_client_conn_cb = None
+        self.update_header_cb = None
+
+    def close(self):
+        self.timeout_cb = None
+        self.fwd_fifo.reg_trigger(None)
+        self.tx_fifo.reg_trigger(None)
+        self.rx_fifo.reg_trigger(None)
+
+    def set_node_id(self, value: str):
+        self.node_id = value
+
+    def get_conn_no(self):
+        return self.conn_no
+
+    def tx_add(self, data: bytearray):
+        ''' add data to transmit queue'''
+        self.tx_fifo += data
+
+    def tx_flush(self):
+        ''' send transmit queue and clears it'''
+        self.tx_fifo()
+
+    def tx_peek(self, size: int = None) -> bytearray:
+        '''returns size numbers of byte without removing them'''
+        return self.tx_fifo.peek(size)
+
+    def tx_log(self, level, info):
+        ''' log the transmit queue'''
+        self.tx_fifo.logging(level, info)
+
+    def tx_clear(self):
+        ''' clear transmit queue'''
+        self.tx_fifo.clear()
+
+    def tx_len(self):
+        ''' get numner of bytes in the transmit queue'''
+        return len(self.tx_fifo)
+
+    def fwd_add(self, data: bytearray):
+        ''' add data to forward queue'''
+        self.fwd_fifo += data
+
+    def fwd_log(self, level, info):
+        ''' log the forward queue'''
+        self.fwd_fifo.logging(level, info)
+
+    def rx_get(self, size: int = None) -> bytearray:
+        '''removes size numbers of bytes and return them'''
+        return self.rx_fifo.get(size)
+
+    def rx_peek(self, size: int = None) -> bytearray:
+        '''returns size numbers of byte without removing them'''
+        return self.rx_fifo.peek(size)
+
+    def rx_log(self, level, info):
+        ''' logs the receive queue'''
+        self.rx_fifo.logging(level, info)
+
+    def rx_clear(self):
+        ''' clear receive queue'''
+        self.rx_fifo.clear()
+
+    def rx_len(self):
+        ''' get numner of bytes in the receive queue'''
+        return len(self.rx_fifo)
+
+    def rx_set_cb(self, callback):
+        self.rx_fifo.reg_trigger(callback)
+
+    def prot_set_timeout_cb(self, callback):
+        self.timeout_cb = callback
+
+    def prot_set_init_new_client_conn_cb(self, callback):
+        self.init_new_client_conn_cb = callback
+
+    def prot_set_update_header_cb(self, callback):
+        self.update_header_cb = callback
+
+
+class StreamPtr():
+    '''Descr StreamPtr'''
+    def __init__(self, _stream, _ifc=None):
+        self.stream = _stream
+        self.ifc = _ifc
+
+    @property
+    def ifc(self):
+        return self._ifc
+
+    @ifc.setter
+    def ifc(self, value):
+        self._ifc = value
+
+    @property
+    def stream(self):
+        return self._stream
+
+    @stream.setter
+    def stream(self, value):
+        self._stream = value
+
+
+class AsyncStream(AsyncIfcImpl):
     MAX_PROC_TIME = 2
     '''maximum processing time for a received msg in sec'''
     MAX_START_TIME = 400
@@ -28,95 +141,42 @@ class AsyncStream():
     '''maximum default time without a received msg in sec'''
 
     def __init__(self, reader: StreamReader, writer: StreamWriter,
-                 addr) -> None:
+                 rstream: "StreamPtr") -> None:
+        AsyncIfcImpl.__init__(self)
+
         logger.debug('AsyncStream.__init__')
-        self.reader = reader
-        self.writer = writer
-        self.addr = addr
-        self.r_addr = ''
-        self.l_addr = ''
-        self.conn_no = next(self._ids)
+
+        self.remote = rstream
+        self.tx_fifo.reg_trigger(self.__write_cb)
+        self._reader = reader
+        self._writer = writer
+        self.r_addr = writer.get_extra_info('peername')
+        self.l_addr = writer.get_extra_info('sockname')
         self.proc_start = None  # start processing start timestamp
         self.proc_max = 0
+        self.async_publ_mqtt = None  # will be set AsyncStreamServer only
+
+    def __write_cb(self):
+        self._writer.write(self.tx_fifo.get())
 
     def __timeout(self) -> int:
-        if self.state == State.init or self.state == State.received:
-            to = self.MAX_START_TIME
-        elif self.state == State.up and \
-                self.server_side and self.modbus_polling:
-            to = self.MAX_INV_IDLE_TIME
-        else:
-            to = self.MAX_DEF_IDLE_TIME
-        return to
-
-    async def publish_outstanding_mqtt(self):
-        '''Publish all outstanding MQTT topics'''
-        try:
-            if self.unique_id:
-                await self.async_publ_mqtt()
-            await self._async_publ_mqtt_proxy_stat('proxy')
-        except Exception:
-            pass
-
-    async def server_loop(self, addr: str) -> None:
-        '''Loop for receiving messages from the inverter (server-side)'''
-        logger.info(f'[{self.node_id}:{self.conn_no}] '
-                    f'Accept connection from {addr}')
-        self.inc_counter('Inverter_Cnt')
-        await self.publish_outstanding_mqtt()
-        await self.loop()
-        self.dec_counter('Inverter_Cnt')
-        await self.publish_outstanding_mqtt()
-        logger.info(f'[{self.node_id}:{self.conn_no}] Server loop stopped for'
-                    f' r{self.r_addr}')
-
-        # if the server connection closes, we also have to disconnect
-        # the connection to te TSUN cloud
-        if self.remote_stream:
-            logger.info(f'[{self.node_id}:{self.conn_no}] disc client '
-                        f'connection: [{self.remote_stream.node_id}:'
-                        f'{self.remote_stream.conn_no}]')
-            await self.remote_stream.disc()
-
-    async def client_loop(self, _: str) -> None:
-        '''Loop for receiving messages from the TSUN cloud (client-side)'''
-        client_stream = await self.remote_stream.loop()
-        logger.info(f'[{client_stream.node_id}:{client_stream.conn_no}] '
-                    'Client loop stopped for'
-                    f' l{client_stream.l_addr}')
-
-        # if the client connection closes, we don't touch the server
-        # connection. Instead we erase the client connection stream,
-        # thus on the next received packet from the inverter, we can
-        # establish a new connection to the TSUN cloud
-
-        # erase backlink to inverter
-        client_stream.remote_stream = None
-
-        if self.remote_stream == client_stream:
-            # logging.debug(f'Client l{client_stream.l_addr} refs:'
-            #               f' {gc.get_referrers(client_stream)}')
-            # than erase client connection
-            self.remote_stream = None
+        if self.timeout_cb:
+            return self.timeout_cb()
+        return 360
 
     async def loop(self) -> Self:
         """Async loop handler for precessing all received messages"""
-        self.r_addr = self.writer.get_extra_info('peername')
-        self.l_addr = self.writer.get_extra_info('sockname')
         self.proc_start = time.time()
         while True:
             try:
-                proc = time.time() - self.proc_start
-                if proc > self.proc_max:
-                    self.proc_max = proc
-                self.proc_start = None
+                self.__calc_proc_time()
                 dead_conn_to = self.__timeout()
                 await asyncio.wait_for(self.__async_read(),
                                        dead_conn_to)
 
-                if self.unique_id:
-                    await self.async_write()
-                    await self.__async_forward()
+                await self.__async_write()
+                await self.__async_forward()
+                if self.async_publ_mqtt:
                     await self.async_publ_mqtt()
 
             except asyncio.TimeoutError:
@@ -124,7 +184,6 @@ class AsyncStream():
                                f'connection timeout ({dead_conn_to}s) '
                                f'for {self.l_addr}')
                 await self.disc()
-                self.close()
                 return self
 
             except OSError as error:
@@ -132,56 +191,53 @@ class AsyncStream():
                              f'{error} for l{self.l_addr} | '
                              f'r{self.r_addr}')
                 await self.disc()
-                self.close()
                 return self
 
             except RuntimeError as error:
                 logger.info(f'[{self.node_id}:{self.conn_no}] '
                             f'{error} for {self.l_addr}')
                 await self.disc()
-                self.close()
                 return self
 
             except Exception:
-                self.inc_counter('SW_Exception')
+                Infos.inc_counter('SW_Exception')
                 logger.error(
-                    f"Exception for {self.addr}:\n"
+                    f"Exception for {self.r_addr}:\n"
                     f"{traceback.format_exc()}")
             await asyncio.sleep(0)  # be cooperative to other task
 
-    async def async_write(self, headline: str = 'Transmit to ') -> None:
-        """Async write handler to transmit the send_buffer"""
-        if self._send_buffer:
-            hex_dump_memory(logging.INFO, f'{headline}{self.addr}:',
-                            self._send_buffer, len(self._send_buffer))
-            self.writer.write(self._send_buffer)
-            await self.writer.drain()
-            self._send_buffer = bytearray(0)  # self._send_buffer[sent:]
+    def __calc_proc_time(self):
+        if self.proc_start:
+            proc = time.time() - self.proc_start
+            if proc > self.proc_max:
+                self.proc_max = proc
+            self.proc_start = None
 
     async def disc(self) -> None:
         """Async disc handler for graceful disconnect"""
-        if self.writer.is_closing():
+        if self._writer.is_closing():
             return
         logger.debug(f'AsyncStream.disc() l{self.l_addr} | r{self.r_addr}')
-        self.writer.close()
-        await self.writer.wait_closed()
+        self._writer.close()
+        await self._writer.wait_closed()
 
     def close(self) -> None:
+        logging.debug(f'AsyncStream.close() l{self.l_addr} | r{self.r_addr}')
         """close handler for a no waiting disconnect
 
            hint: must be called before releasing the connection instance
         """
-        self.reader.feed_eof()          # abort awaited read
-        if self.writer.is_closing():
+        super().close()
+        self._reader.feed_eof()          # abort awaited read
+        if self._writer.is_closing():
             return
-        logger.debug(f'AsyncStream.close() l{self.l_addr} | r{self.r_addr}')
-        self.writer.close()
+        self._writer.close()
 
     def healthy(self) -> bool:
         elapsed = 0
         if self.proc_start is not None:
             elapsed = time.time() - self.proc_start
-        if self.state == State.closed or elapsed > self.MAX_PROC_TIME:
+        if elapsed > self.MAX_PROC_TIME:
             logging.debug(f'[{self.node_id}:{self.conn_no}:'
                           f'{type(self).__name__}]'
                           f' act:{round(1000*elapsed)}ms'
@@ -194,61 +250,148 @@ class AsyncStream():
     '''
     async def __async_read(self) -> None:
         """Async read handler to read received data from TCP stream"""
-        data = await self.reader.read(4096)
+        data = await self._reader.read(4096)
         if data:
             self.proc_start = time.time()
-            self._recv_buffer += data
-            wait = self.read()                # call read in parent class
-            if wait > 0:
+            self.rx_fifo += data
+            wait = self.rx_fifo()                # call read in parent class
+            if wait and wait > 0:
                 await asyncio.sleep(wait)
         else:
             raise RuntimeError("Peer closed.")
 
+    async def __async_write(self, headline: str = 'Transmit to ') -> None:
+        """Async write handler to transmit the send_buffer"""
+        if len(self.tx_fifo) > 0:
+            self.tx_fifo.logging(logging.INFO, f'{headline}{self.r_addr}:')
+            self._writer.write(self.tx_fifo.get())
+            await self._writer.drain()
+
     async def __async_forward(self) -> None:
         """forward handler transmits data over the remote connection"""
-        if not self._forward_buffer:
+        if len(self.fwd_fifo) == 0:
             return
         try:
-            if not self.remote_stream:
-                await self.async_create_remote()
-                if self.remote_stream:
-                    if self.remote_stream._init_new_client_conn():
-                        await self.remote_stream.async_write()
-
-            if self.remote_stream:
-                self.remote_stream._update_header(self._forward_buffer)
-                hex_dump_memory(logging.INFO,
-                                f'Forward to {self.remote_stream.addr}:',
-                                self._forward_buffer,
-                                len(self._forward_buffer))
-                self.remote_stream.writer.write(self._forward_buffer)
-                await self.remote_stream.writer.drain()
-                self._forward_buffer = bytearray(0)
+            await self._async_forward()
 
         except OSError as error:
-            if self.remote_stream:
-                rmt = self.remote_stream
-                self.remote_stream = None
-                logger.error(f'[{rmt.node_id}:{rmt.conn_no}] Fwd: {error} for '
-                             f'l{rmt.l_addr} | r{rmt.r_addr}')
-                await rmt.disc()
-                rmt.close()
+            if self.remote.stream:
+                rmt = self.remote
+                logger.error(f'[{rmt.stream.node_id}:{rmt.stream.conn_no}] '
+                             f'Fwd: {error} for '
+                             f'l{rmt.ifc.l_addr} | r{rmt.ifc.r_addr}')
+                await rmt.ifc.disc()
+                if rmt.ifc.close_cb:
+                    rmt.ifc.close_cb()
 
         except RuntimeError as error:
-            if self.remote_stream:
-                rmt = self.remote_stream
-                self.remote_stream = None
-                logger.info(f'[{rmt.node_id}:{rmt.conn_no}] '
-                            f'Fwd: {error} for {rmt.l_addr}')
-                await rmt.disc()
-                rmt.close()
+            if self.remote.stream:
+                rmt = self.remote
+                logger.info(f'[{rmt.stream.node_id}:{rmt.stream.conn_no}] '
+                            f'Fwd: {error} for {rmt.ifc.l_addr}')
+                await rmt.ifc.disc()
+                if rmt.ifc.close_cb:
+                    rmt.ifc.close_cb()
 
         except Exception:
-            self.inc_counter('SW_Exception')
+            Infos.inc_counter('SW_Exception')
             logger.error(
-                f"Fwd Exception for {self.addr}:\n"
+                f"Fwd Exception for {self.r_addr}:\n"
                 f"{traceback.format_exc()}")
 
-    def __del__(self):
-        logger.debug(
-            f"AsyncStream.__del__  l{self.l_addr} | r{self.r_addr}")
+    async def publish_outstanding_mqtt(self):
+        '''Publish all outstanding MQTT topics'''
+        try:
+            await self.async_publ_mqtt()
+            await Proxy._async_publ_mqtt_proxy_stat('proxy')
+        except Exception:
+            pass
+
+
+class AsyncStreamServer(AsyncStream):
+    def __init__(self, reader: StreamReader, writer: StreamWriter,
+                 async_publ_mqtt, create_remote,
+                 rstream: "StreamPtr") -> None:
+        AsyncStream.__init__(self, reader, writer, rstream)
+        self.create_remote = create_remote
+        self.async_publ_mqtt = async_publ_mqtt
+
+    def close(self) -> None:
+        logging.debug('AsyncStreamServer.close()')
+        self.create_remote = None
+        self.async_publ_mqtt = None
+        super().close()
+
+    async def server_loop(self) -> None:
+        '''Loop for receiving messages from the inverter (server-side)'''
+        logger.info(f'[{self.node_id}:{self.conn_no}] '
+                    f'Accept connection from {self.r_addr}')
+        Infos.inc_counter('Inverter_Cnt')
+        await self.publish_outstanding_mqtt()
+        await self.loop()
+        Infos.dec_counter('Inverter_Cnt')
+        await self.publish_outstanding_mqtt()
+        logger.info(f'[{self.node_id}:{self.conn_no}] Server loop stopped for'
+                    f' r{self.r_addr}')
+
+        # if the server connection closes, we also have to disconnect
+        # the connection to te TSUN cloud
+        if self.remote and self.remote.stream:
+            logger.info(f'[{self.node_id}:{self.conn_no}] disc client '
+                        f'connection: [{self.remote.ifc.node_id}:'
+                        f'{self.remote.ifc.conn_no}]')
+            await self.remote.ifc.disc()
+
+    async def _async_forward(self) -> None:
+        """forward handler transmits data over the remote connection"""
+        if not self.remote.stream:
+            await self.create_remote()
+            if self.remote.stream and \
+               self.remote.ifc.init_new_client_conn_cb():
+                await self.remote.ifc._AsyncStream__async_write()
+        if self.remote.stream:
+            self.remote.ifc.update_header_cb(self.fwd_fifo.peek())
+            self.fwd_fifo.logging(logging.INFO, 'Forward to '
+                                  f'{self.remote.ifc.r_addr}:')
+            self.remote.ifc._writer.write(self.fwd_fifo.get())
+            await self.remote.ifc._writer.drain()
+
+
+class AsyncStreamClient(AsyncStream):
+    def __init__(self, reader: StreamReader, writer: StreamWriter,
+                 rstream: "StreamPtr", close_cb) -> None:
+        AsyncStream.__init__(self, reader, writer, rstream)
+        self.close_cb = close_cb
+
+    async def disc(self) -> None:
+        logging.debug('AsyncStreamClient.disc()')
+        self.remote = None
+        await super().disc()
+
+    def close(self) -> None:
+        logging.debug('AsyncStreamClient.close()')
+        self.close_cb = None
+        super().close()
+
+    async def client_loop(self, _: str) -> None:
+        '''Loop for receiving messages from the TSUN cloud (client-side)'''
+        Infos.inc_counter('Cloud_Conn_Cnt')
+        await self.publish_outstanding_mqtt()
+        await self.loop()
+        Infos.dec_counter('Cloud_Conn_Cnt')
+        await self.publish_outstanding_mqtt()
+        logger.info(f'[{self.node_id}:{self.conn_no}] '
+                    'Client loop stopped for'
+                    f' l{self.l_addr}')
+
+        if self.close_cb:
+            self.close_cb()
+
+    async def _async_forward(self) -> None:
+        """forward handler transmits data over the remote connection"""
+        if self.remote.stream:
+            self.remote.ifc.update_header_cb(self.fwd_fifo.peek())
+            self.fwd_fifo.logging(logging.INFO, 'Forward to '
+                                  f'{self.remote.ifc.r_addr}:')
+            self.remote.ifc._writer.write(self.fwd_fifo.get())
+            await self.remote.ifc._writer.drain()

app/src/byte_fifo.py

@@ -0,0 +1,52 @@
+from messages import hex_dump_str, hex_dump_memory
+
+
+class ByteFifo:
+    """ a byte FIFO buffer with trigger callback """
+    __slots__ = ('__buf', '__trigger_cb')
+
+    def __init__(self):
+        self.__buf = bytearray()
+        self.__trigger_cb = None
+
+    def reg_trigger(self, cb) -> None:
+        self.__trigger_cb = cb
+
+    def __iadd__(self, data):
+        self.__buf.extend(data)
+        return self
+
+    def __call__(self):
+        '''triggers the observer'''
+        if callable(self.__trigger_cb):
+            return self.__trigger_cb()
+        return None
+
+    def get(self, size: int = None) -> bytearray:
+        '''removes size numbers of byte and return them'''
+        if not size:
+            data = self.__buf
+            self.clear()
+        else:
+            data = self.__buf[:size]
+            # The fast delete syntax
+            self.__buf[:size] = b''
+        return data
+
+    def peek(self, size: int = None) -> bytearray:
+        '''returns size numbers of byte without removing them'''
+        if not size:
+            return self.__buf
+        return self.__buf[:size]
+
+    def clear(self):
+        self.__buf = bytearray()
+
+    def __len__(self) -> int:
+        return len(self.__buf)
+
+    def __str__(self) -> str:
+        return hex_dump_str(self.__buf, self.__len__())
+
+    def logging(self, level, info):
+        hex_dump_memory(level, info, self.__buf, self.__len__())

app/src/cnf/config.py

@@ -1,19 +1,48 @@
-'''Config module handles the proxy configuration in the config.toml file'''
+'''Config module handles the proxy configuration'''
 
 import shutil
-import tomllib
 import logging
+from abc import ABC, abstractmethod
 from schema import Schema, And, Or, Use, Optional
 
 
+class ConfigIfc(ABC):
+    '''Abstract basis class for config readers'''
+    def __init__(self):
+        Config.add(self)
+
+    @abstractmethod
+    def get_config(self) -> dict:    # pragma: no cover
+        '''get the unverified config from the reader'''
+        pass
+
+    @abstractmethod
+    def descr(self) -> str:          # pragma: no cover
+        '''return a descriction of the source, e.g. the file name'''
+        pass
+
+    def _extend_key(self, conf, key, val):
+        '''split a dotted dict key into a hierarchical dict tree '''
+        lst = key.split('.')
+        d = conf
+        for i, idx in enumerate(lst, 1):  # pragma: no branch
+            if i == len(lst):
+                d[idx] = val
+                break
+            if idx not in d:
+                d[idx] = {}
+            d = d[idx]
+
+
 class Config():
-    '''Static class Config is reads and sanitize the config.
+    '''Static class Config build and sanitize the internal config dictenary.
 
-    Read config.toml file and sanitize it with read().
-    Get named parts of the config with get()'''
+ Using config readers, a partial configuration is added to config.
+ Config readers are a derivation of the abstract ConfigIfc reader.
+ When a config reader is instantiated, theits `get_config` method is
+ called automatically and afterwards the config will be merged.
+    '''
 
-    act_config = {}
-    def_config = {}
     conf_schema = Schema({
         'tsun': {
             'enabled': Use(bool),
@@ -28,8 +57,10 @@ class Config():
         'mqtt': {
             'host': Use(str),
             'port': And(Use(int), lambda n: 1024 <= n <= 65535),
-            'user': And(Use(str), Use(lambda s: s if len(s) > 0 else None)),
-            'passwd': And(Use(str), Use(lambda s: s if len(s) > 0 else None))
+            'user': Or(None, And(Use(str),
+                                 Use(lambda s: s if len(s) > 0 else None))),
+            'passwd': Or(None, And(Use(str),
+                                   Use(lambda s: s if len(s) > 0 else None)))
         },
         'ha': {
             'auto_conf_prefix': Use(str),
@@ -57,7 +88,8 @@ class Config():
                 Optional('client_mode'): {
                     'host': Use(str),
                     Optional('port', default=8899):
-                        And(Use(int), lambda n: 1024 <= n <= 65535)
+                        And(Use(int), lambda n: 1024 <= n <= 65535),
+                    Optional('forward', default=False): Use(bool),
                 },
                 Optional('modbus_polling', default=True): Use(bool),
                 Optional('suggested_area', default=""): Use(str),
@@ -92,7 +124,13 @@ class Config():
     )
 
     @classmethod
-    def class_init(cls) -> None | str:  # pragma: no cover
+    def init(cls, def_reader: ConfigIfc) -> None | str:
+        '''Initialise the Proxy-Config
+
+Copy the internal default config file into the config directory
+and initialise the Config with the default configuration '''
+        cls.err = None
+        cls.def_config = {}
         try:
             # make the default config transparaent by copying it
             # in the config.example file
@@ -102,66 +140,59 @@ class Config():
                          "config/config.example.toml")
         except Exception:
             pass
-        err_str = cls.read()
-        del cls.conf_schema
-        return err_str
-
-    @classmethod
-    def _read_config_file(cls) -> dict:  # pragma: no cover
-        usr_config = {}
 
+        # read example config file as default configuration
         try:
-            with open("config/config.toml", "rb") as f:
-                usr_config = tomllib.load(f)
+            def_config = def_reader.get_config()
+            cls.def_config = cls.conf_schema.validate(def_config)
+            logging.info(f'Read from {def_reader.descr()} => ok')
         except Exception as error:
-            err = f'Config.read: {error}'
-            logging.error(err)
-            logging.info(
-                '\n  To create the missing config.toml file, '
-                'you can rename the template config.example.toml\n'
-                '  and customize it for your scenario.\n')
-        return usr_config
+            cls.err = f'Config.read: {error}'
+            logging.error(
+                f"Can't read from {def_reader.descr()} => error\n  {error}")
+
+        cls.act_config = cls.def_config.copy()
 
     @classmethod
-    def read(cls, path='') -> None | str:
-        '''Read config file, merge it with the default config
+    def add(cls, reader: ConfigIfc):
+        '''Merge the config from the Config Reader into the config
+
+Checks if a default config exists. If no default configuration exists,
+the Config.init  method has not yet been called.This is normal for the very
+first Config Reader which creates the default config and must be ignored
+here. The default config reader is handled in the Config.init method'''
+        if hasattr(cls, 'def_config'):
+            cls.__parse(reader)
+
+    @classmethod
+    def get_error(cls) -> None | str:
+        '''return the last error as a string or None if there is no error'''
+        return cls.err
+
+    @classmethod
+    def __parse(cls, reader) -> None | str:
+        '''Read config from the reader, merge it with the default config
         and sanitize the result'''
-        err = None
-        config = {}
-        logger = logging.getLogger('data')
-
+        res = 'ok'
         try:
-            # read example config file as default configuration
-            cls.def_config = {}
-            with open(f"{path}default_config.toml", "rb") as f:
-                def_config = tomllib.load(f)
-                cls.def_config = cls.conf_schema.validate(def_config)
-
-            # overwrite the default values, with values from
-            # the config.toml file
-            usr_config = cls._read_config_file()
-
-            # merge the default and the user config
-            config = def_config.copy()
+            rd_config = reader.get_config()
+            config = cls.act_config.copy()
             for key in ['tsun', 'solarman', 'mqtt', 'ha', 'inverters',
                         'gen3plus']:
-                if key in usr_config:
-                    config[key] |= usr_config[key]
-
-            try:
-                cls.act_config = cls.conf_schema.validate(config)
-            except Exception as error:
-                err = f'Config.read: {error}'
-                logging.error(err)
-
-            # logging.debug(f'Readed config: "{cls.act_config}" ')
+                if key in rd_config:
+                    config[key] = config[key] | rd_config[key]
 
+            cls.act_config = cls.conf_schema.validate(config)
+        except FileNotFoundError:
+            res = 'n/a'
         except Exception as error:
-            err = f'Config.read: {error}'
-            logger.error(err)
-            cls.act_config = {}
+            cls.err = f'error: {error}'
+            logging.error(
+                f"Can't read from {reader.descr()} => error\n  {error}")
+            return cls.err
 
-        return err
+        logging.info(f'Read from {reader.descr()} => {res}')
+        return cls.err
 
     @classmethod
     def get(cls, member: str = None):

app/src/cnf/config_read_env.py

@@ -0,0 +1,25 @@
+'''Config Reader module which handles config values from the environment'''
+
+import os
+from cnf.config import ConfigIfc
+
+
+class ConfigReadEnv(ConfigIfc):
+    '''Reader for environment values of the configuration'''
+
+    def get_config(self) -> dict:
+        conf = {}
+        data = [
+            ('mqtt.host', 'MQTT_HOST'),
+            ('mqtt.port', 'MQTT_PORT'),
+            ('mqtt.user', 'MQTT_USER'),
+            ('mqtt.passwd', 'MQTT_PASSWORD'),
+        ]
+        for key, env_var in data:
+            val = os.getenv(env_var)
+            if val:
+                self._extend_key(conf, key, val)
+        return conf
+
+    def descr(self):
+        return "environment"

app/src/cnf/config_read_json.py

@@ -0,0 +1,46 @@
+'''Config Reader module which handles *.json config files'''
+
+import json
+from cnf.config import ConfigIfc
+
+
+class ConfigReadJson(ConfigIfc):
+    '''Reader for json config files'''
+    def __init__(self, cnf_file='/data/options.json'):
+        '''Read a json file and add the settings to the config'''
+        if not isinstance(cnf_file, str):
+            return
+        self.cnf_file = cnf_file
+        super().__init__()
+
+    def convert_inv(self, conf, inv):
+        if 'serial' in inv:
+            snr = inv['serial']
+            del inv['serial']
+            conf[snr] = {}
+
+            for key, val in inv.items():
+                self._extend_key(conf[snr], key, val)
+
+    def convert_inv_arr(self, conf, key, val: list):
+        if key not in conf:
+            conf[key] = {}
+        for elm in val:
+            self.convert_inv(conf[key], elm)
+
+    def convert_to_obj(self, data):
+        conf = {}
+        for key, val in data.items():
+            if key == 'inverters' and isinstance(val, list):
+                self.convert_inv_arr(conf, key, val)
+            else:
+                self._extend_key(conf, key, val)
+        return conf
+
+    def get_config(self) -> dict:
+        with open(self.cnf_file) as f:
+            data = json.load(f)
+            return self.convert_to_obj(data)
+
+    def descr(self):
+        return self.cnf_file

app/src/cnf/config_read_toml.py

@@ -0,0 +1,21 @@
+'''Config Reader module which handles *.toml config files'''
+
+import tomllib
+from cnf.config import ConfigIfc
+
+
+class ConfigReadToml(ConfigIfc):
+    '''Reader for toml config files'''
+    def __init__(self, cnf_file):
+        '''Read a toml file and add the settings to the config'''
+        if not isinstance(cnf_file, str):
+            return
+        self.cnf_file = cnf_file
+        super().__init__()
+
+    def get_config(self) -> dict:
+        with open(self.cnf_file, "rb") as f:
+            return tomllib.load(f)
+
+    def descr(self):
+        return self.cnf_file

app/src/gen3/connection_g3.py

@@ -1,41 +0,0 @@
-import logging
-from asyncio import StreamReader, StreamWriter
-from async_stream import AsyncStream
-from gen3.talent import Talent
-
-logger = logging.getLogger('conn')
-
-
-class ConnectionG3(AsyncStream, Talent):
-
-    def __init__(self, reader: StreamReader, writer: StreamWriter,
-                 addr, remote_stream: 'ConnectionG3', server_side: bool,
-                 id_str=b'') -> None:
-        AsyncStream.__init__(self, reader, writer, addr)
-        Talent.__init__(self, server_side, id_str)
-
-        self.remote_stream: 'ConnectionG3' = remote_stream
-
-    '''
-    Our puplic methods
-    '''
-    def close(self):
-        AsyncStream.close(self)
-        Talent.close(self)
-        # logger.info(f'AsyncStream refs: {gc.get_referrers(self)}')
-
-    async def async_create_remote(self) -> None:
-        pass  # virtual interface # pragma: no cover
-
-    async def async_publ_mqtt(self) -> None:
-        pass  # virtual interface # pragma: no cover
-
-    def healthy(self) -> bool:
-        logger.debug('ConnectionG3 healthy()')
-        return AsyncStream.healthy(self)
-
-    '''
-    Our private methods
-    '''
-    def __del__(self):
-        super().__del__()

app/src/gen3/infos_g3.py

@@ -3,93 +3,91 @@ import struct
 import logging
 from typing import Generator
 
-if __name__ == "app.src.gen3.infos_g3":
-    from app.src.infos import Infos, Register
-else:  # pragma: no cover
-    from infos import Infos, Register
+from infos import Infos, Register
 
 
 class RegisterMap:
+    __slots__ = ()
+
     map = {
-        0x00092ba8: Register.COLLECTOR_FW_VERSION,
-        0x000927c0: Register.CHIP_TYPE,
-        0x00092f90: Register.CHIP_MODEL,
-        0x00095a88: Register.TRACE_URL,
-        0x00095aec: Register.LOGGER_URL,
-        0x0000000a: Register.PRODUCT_NAME,
-        0x00000014: Register.MANUFACTURER,
-        0x0000001e: Register.VERSION,
-        0x00000028: Register.SERIAL_NUMBER,
-        0x00000032: Register.EQUIPMENT_MODEL,
-        0x00013880: Register.NO_INPUTS,
-        0xffffff00: Register.INVERTER_CNT,
-        0xffffff01: Register.UNKNOWN_SNR,
-        0xffffff02: Register.UNKNOWN_MSG,
-        0xffffff03: Register.INVALID_DATA_TYPE,
-        0xffffff04: Register.INTERNAL_ERROR,
-        0xffffff05: Register.UNKNOWN_CTRL,
-        0xffffff06: Register.OTA_START_MSG,
-        0xffffff07: Register.SW_EXCEPTION,
-        0xffffff08: Register.MAX_DESIGNED_POWER,
-        0xffffff09: Register.OUTPUT_COEFFICIENT,
-        0xffffff0a: Register.INVERTER_STATUS,
-        0xffffff0b: Register.POLLING_INTERVAL,
-        0xfffffffe: Register.TEST_REG1,
-        0xffffffff: Register.TEST_REG2,
-        0x00000640: Register.OUTPUT_POWER,
-        0x000005dc: Register.RATED_POWER,
-        0x00000514: Register.INVERTER_TEMP,
-        0x000006a4: Register.PV1_VOLTAGE,
-        0x00000708: Register.PV1_CURRENT,
-        0x0000076c: Register.PV1_POWER,
-        0x000007d0: Register.PV2_VOLTAGE,
-        0x00000834: Register.PV2_CURRENT,
-        0x00000898: Register.PV2_POWER,
-        0x000008fc: Register.PV3_VOLTAGE,
-        0x00000960: Register.PV3_CURRENT,
-        0x000009c4: Register.PV3_POWER,
-        0x00000a28: Register.PV4_VOLTAGE,
-        0x00000a8c: Register.PV4_CURRENT,
-        0x00000af0: Register.PV4_POWER,
-        0x00000c1c: Register.PV1_DAILY_GENERATION,
-        0x00000c80: Register.PV1_TOTAL_GENERATION,
-        0x00000ce4: Register.PV2_DAILY_GENERATION,
-        0x00000d48: Register.PV2_TOTAL_GENERATION,
-        0x00000dac: Register.PV3_DAILY_GENERATION,
-        0x00000e10: Register.PV3_TOTAL_GENERATION,
-        0x00000e74: Register.PV4_DAILY_GENERATION,
-        0x00000ed8: Register.PV4_TOTAL_GENERATION,
-        0x00000b54: Register.DAILY_GENERATION,
-        0x00000bb8: Register.TOTAL_GENERATION,
-        0x000003e8: Register.GRID_VOLTAGE,
-        0x0000044c: Register.GRID_CURRENT,
-        0x000004b0: Register.GRID_FREQUENCY,
-        0x000cfc38: Register.CONNECT_COUNT,
-        0x000c3500: Register.SIGNAL_STRENGTH,
-        0x000c96a8: Register.POWER_ON_TIME,
-        0x000d0020: Register.COLLECT_INTERVAL,
-        0x000cf850: Register.DATA_UP_INTERVAL,
-        0x000c7f38: Register.COMMUNICATION_TYPE,
-        0x00000191: Register.EVENT_401,
-        0x00000192: Register.EVENT_402,
-        0x00000193: Register.EVENT_403,
-        0x00000194: Register.EVENT_404,
-        0x00000195: Register.EVENT_405,
-        0x00000196: Register.EVENT_406,
-        0x00000197: Register.EVENT_407,
-        0x00000198: Register.EVENT_408,
-        0x00000199: Register.EVENT_409,
-        0x0000019a: Register.EVENT_410,
-        0x0000019b: Register.EVENT_411,
-        0x0000019c: Register.EVENT_412,
-        0x0000019d: Register.EVENT_413,
-        0x0000019e: Register.EVENT_414,
-        0x0000019f: Register.EVENT_415,
-        0x000001a0: Register.EVENT_416,
+        0x00092ba8: {'reg': Register.COLLECTOR_FW_VERSION},
+        0x000927c0: {'reg': Register.CHIP_TYPE},
+        0x00092f90: {'reg': Register.CHIP_MODEL},
+        0x00094ae8: {'reg': Register.MAC_ADDR},
+        0x00095a88: {'reg': Register.TRACE_URL},
+        0x00095aec: {'reg': Register.LOGGER_URL},
+        0x0000000a: {'reg': Register.PRODUCT_NAME},
+        0x00000014: {'reg': Register.MANUFACTURER},
+        0x0000001e: {'reg': Register.VERSION},
+        0x00000028: {'reg': Register.SERIAL_NUMBER},
+        0x00000032: {'reg': Register.EQUIPMENT_MODEL},
+        0x00013880: {'reg': Register.NO_INPUTS},
+        0xffffff00: {'reg': Register.INVERTER_CNT},
+        0xffffff01: {'reg': Register.UNKNOWN_SNR},
+        0xffffff02: {'reg': Register.UNKNOWN_MSG},
+        0xffffff03: {'reg': Register.INVALID_DATA_TYPE},
+        0xffffff04: {'reg': Register.INTERNAL_ERROR},
+        0xffffff05: {'reg': Register.UNKNOWN_CTRL},
+        0xffffff06: {'reg': Register.OTA_START_MSG},
+        0xffffff07: {'reg': Register.SW_EXCEPTION},
+        0xffffff08: {'reg': Register.POLLING_INTERVAL},
+        0xfffffffe: {'reg': Register.TEST_REG1},
+        0xffffffff: {'reg': Register.TEST_REG2},
+        0x00000640: {'reg': Register.OUTPUT_POWER},
+        0x000005dc: {'reg': Register.RATED_POWER},
+        0x00000514: {'reg': Register.INVERTER_TEMP},
+        0x000006a4: {'reg': Register.PV1_VOLTAGE},
+        0x00000708: {'reg': Register.PV1_CURRENT},
+        0x0000076c: {'reg': Register.PV1_POWER},
+        0x000007d0: {'reg': Register.PV2_VOLTAGE},
+        0x00000834: {'reg': Register.PV2_CURRENT},
+        0x00000898: {'reg': Register.PV2_POWER},
+        0x000008fc: {'reg': Register.PV3_VOLTAGE},
+        0x00000960: {'reg': Register.PV3_CURRENT},
+        0x000009c4: {'reg': Register.PV3_POWER},
+        0x00000a28: {'reg': Register.PV4_VOLTAGE},
+        0x00000a8c: {'reg': Register.PV4_CURRENT},
+        0x00000af0: {'reg': Register.PV4_POWER},
+        0x00000c1c: {'reg': Register.PV1_DAILY_GENERATION},
+        0x00000c80: {'reg': Register.PV1_TOTAL_GENERATION},
+        0x00000ce4: {'reg': Register.PV2_DAILY_GENERATION},
+        0x00000d48: {'reg': Register.PV2_TOTAL_GENERATION},
+        0x00000dac: {'reg': Register.PV3_DAILY_GENERATION},
+        0x00000e10: {'reg': Register.PV3_TOTAL_GENERATION},
+        0x00000e74: {'reg': Register.PV4_DAILY_GENERATION},
+        0x00000ed8: {'reg': Register.PV4_TOTAL_GENERATION},
+        0x00000b54: {'reg': Register.DAILY_GENERATION},
+        0x00000bb8: {'reg': Register.TOTAL_GENERATION},
+        0x000003e8: {'reg': Register.GRID_VOLTAGE},
+        0x0000044c: {'reg': Register.GRID_CURRENT},
+        0x000004b0: {'reg': Register.GRID_FREQUENCY},
+        0x000cfc38: {'reg': Register.CONNECT_COUNT},
+        0x000c3500: {'reg': Register.SIGNAL_STRENGTH},
+        0x000c96a8: {'reg': Register.POWER_ON_TIME},
+        0x000d0020: {'reg': Register.COLLECT_INTERVAL},
+        0x000cf850: {'reg': Register.DATA_UP_INTERVAL},
+        0x000c7f38: {'reg': Register.COMMUNICATION_TYPE},
+        0x00000190: {'reg': Register.EVENT_ALARM},
+        0x000001f4: {'reg': Register.EVENT_FAULT},
+        0x00000258: {'reg': Register.EVENT_BF1},
+        0x000002bc: {'reg': Register.EVENT_BF2},
+        0x00000064: {'reg': Register.INVERTER_STATUS},
+
+        0x00000fa0: {'reg': Register.BOOT_STATUS},
+        0x00001004: {'reg': Register.DSP_STATUS},
+        0x000010cc: {'reg': Register.WORK_MODE},
+        0x000011f8: {'reg': Register.OUTPUT_SHUTDOWN},
+        0x0000125c: {'reg': Register.MAX_DESIGNED_POWER},
+        0x000012c0: {'reg': Register.RATED_LEVEL},
+        0x00001324: {'reg': Register.INPUT_COEFFICIENT, 'ratio':  100/1024},
+        0x00001388: {'reg': Register.GRID_VOLT_CAL_COEF},
+        0x00002710: {'reg': Register.PROD_COMPL_TYPE},
+        0x00003200: {'reg': Register.OUTPUT_COEFFICIENT, 'ratio':  100/1024},
     }
 
 
 class InfosG3(Infos):
+    __slots__ = ()
 
     def ha_confs(self, ha_prfx: str, node_id: str, snr: str,
                  sug_area: str = '') \
@@ -103,7 +101,8 @@ class InfosG3(Infos):
                          entity strings
         sug_area:str ==> suggested area string from the config file'''
         # iterate over RegisterMap.map and get the register values
-        for reg in RegisterMap.map.values():
+        for row in RegisterMap.map.values():
+            reg = row['reg']
             res = self.ha_conf(reg, ha_prfx, node_id, snr, False, sug_area)  # noqa: E501
             if res:
                 yield res
@@ -122,9 +121,11 @@ class InfosG3(Infos):
             result = struct.unpack_from('!lB', buf, ind)
             addr = result[0]
             if addr not in RegisterMap.map:
+                row = None
                 info_id = -1
             else:
-                info_id = RegisterMap.map[addr]
+                row = RegisterMap.map[addr]
+                info_id = row['reg']
             data_type = result[1]
             ind += 5
 
@@ -170,9 +171,16 @@ class InfosG3(Infos):
                               " not supported")
                 return
 
+            result = self.__modify_val(row, result)
+
             yield from self.__store_result(addr, result, info_id, node_id)
             i += 1
 
+    def __modify_val(self, row, result):
+        if row and 'ratio' in row:
+            result = round(result * row['ratio'], 2)
+        return result
+
     def __store_result(self, addr, result, info_id, node_id):
         keys, level, unit, must_incr = self._key_obj(info_id)
         if keys:

app/src/gen3/inverter_g3.py

@@ -1,130 +1,9 @@
-import logging
-import traceback
-import json
-import asyncio
 from asyncio import StreamReader, StreamWriter
-from config import Config
-from inverter import Inverter
-from gen3.connection_g3 import ConnectionG3
-from aiomqtt import MqttCodeError
-from infos import Infos
+
+from inverter_base import InverterBase
+from gen3.talent import Talent
 
 
-logger_mqtt = logging.getLogger('mqtt')
-
-
-class InverterG3(Inverter, ConnectionG3):
-    '''class Inverter is a derivation of an Async_Stream
-
-    The class has some class method for managing common resources like a
-    connection to the MQTT broker or proxy error counter which are common
-    for all inverter connection
-
-    Instances of the class are connections to an inverter and can have an
-    optional link to an remote connection to the TSUN cloud. A remote
-    connection dies with the inverter connection.
-
-    class methods:
-        class_init():  initialize the common resources of the proxy (MQTT
-                       broker, Proxy DB, etc). Must be called before the
-                       first inverter instance can be created
-        class_close(): release the common resources of the proxy. Should not
-                       be called before any instances of the class are
-                       destroyed
-
-    methods:
-        server_loop(addr): Async loop method for receiving messages from the
-                           inverter (server-side)
-        client_loop(addr): Async loop method for receiving messages from the
-                           TSUN cloud (client-side)
-        async_create_remote(): Establish a client connection to the TSUN cloud
-        async_publ_mqtt(): Publish data to MQTT broker
-        close(): Release method which must be called before a instance can be
-                 destroyed
-    '''
-
-    def __init__(self, reader: StreamReader, writer: StreamWriter, addr):
-        super().__init__(reader, writer, addr, None, True)
-        self.__ha_restarts = -1
-
-    async def async_create_remote(self) -> None:
-        '''Establish a client connection to the TSUN cloud'''
-        tsun = Config.get('tsun')
-        host = tsun['host']
-        port = tsun['port']
-        addr = (host, port)
-
-        try:
-            logging.info(f'[{self.node_id}] Connect to {addr}')
-            connect = asyncio.open_connection(host, port)
-            reader, writer = await connect
-            self.remote_stream = ConnectionG3(reader, writer, addr, self,
-                                              False, self.id_str)
-            logging.info(f'[{self.remote_stream.node_id}:'
-                         f'{self.remote_stream.conn_no}] '
-                         f'Connected to {addr}')
-            asyncio.create_task(self.client_loop(addr))
-
-        except (ConnectionRefusedError, TimeoutError) as error:
-            logging.info(f'{error}')
-        except Exception:
-            self.inc_counter('SW_Exception')
-            logging.error(
-                f"Inverter: Exception for {addr}:\n"
-                f"{traceback.format_exc()}")
-
-    async def async_publ_mqtt(self) -> None:
-        '''publish data to MQTT broker'''
-        # check if new inverter or collector infos are available or when the
-        #  home assistant has changed the status back to online
-        try:
-            if (('inverter' in self.new_data and self.new_data['inverter'])
-                    or ('collector' in self.new_data and
-                        self.new_data['collector'])
-                    or self.mqtt.ha_restarts != self.__ha_restarts):
-                await self._register_proxy_stat_home_assistant()
-                await self.__register_home_assistant()
-                self.__ha_restarts = self.mqtt.ha_restarts
-
-            for key in self.new_data:
-                await self.__async_publ_mqtt_packet(key)
-            for key in Infos.new_stat_data:
-                await self._async_publ_mqtt_proxy_stat(key)
-
-        except MqttCodeError as error:
-            logging.error(f'Mqtt except: {error}')
-        except Exception:
-            self.inc_counter('SW_Exception')
-            logging.error(
-                f"Inverter: Exception:\n"
-                f"{traceback.format_exc()}")
-
-    async def __async_publ_mqtt_packet(self, key):
-        db = self.db.db
-        if key in db and self.new_data[key]:
-            data_json = json.dumps(db[key])
-            node_id = self.node_id
-            logger_mqtt.debug(f'{key}: {data_json}')
-            await self.mqtt.publish(f'{self.entity_prfx}{node_id}{key}', data_json)  # noqa: E501
-            self.new_data[key] = False
-
-    async def __register_home_assistant(self) -> None:
-        '''register all our topics at home assistant'''
-        for data_json, component, node_id, id in self.db.ha_confs(
-                self.entity_prfx, self.node_id, self.unique_id,
-                self.sug_area):
-            logger_mqtt.debug(f"MQTT Register: cmp:'{component}'"
-                              f" node_id:'{node_id}' {data_json}")
-            await self.mqtt.publish(f"{self.discovery_prfx}{component}"
-                                    f"/{node_id}{id}/config", data_json)
-
-        self.db.reg_clr_at_midnight(f'{self.entity_prfx}{self.node_id}')
-
-    def close(self) -> None:
-        logging.debug(f'InverterG3.close() l{self.l_addr} | r{self.r_addr}')
-        super().close()         # call close handler in the parent class
-#         logging.info(f'Inverter refs: {gc.get_referrers(self)}')
-
-    def __del__(self):
-        logging.debug("InverterG3.__del__")
-        super().__del__()
+class InverterG3(InverterBase):
+    def __init__(self, reader: StreamReader, writer: StreamWriter):
+        super().__init__(reader, writer, 'tsun', Talent)

app/src/gen3/talent.py

@@ -4,20 +4,12 @@ from zoneinfo import ZoneInfo
 from datetime import datetime
 from tzlocal import get_localzone
 
-if __name__ == "app.src.gen3.talent":
-    from app.src.messages import hex_dump_memory, Message, State
-    from app.src.modbus import Modbus
-    from app.src.my_timer import Timer
-    from app.src.config import Config
-    from app.src.gen3.infos_g3 import InfosG3
-    from app.src.infos import Register
-else:  # pragma: no cover
-    from messages import hex_dump_memory, Message, State
-    from modbus import Modbus
-    from my_timer import Timer
-    from config import Config
-    from gen3.infos_g3 import InfosG3
-    from infos import Register
+from async_ifc import AsyncIfc
+from messages import Message, State
+from modbus import Modbus
+from cnf.config import Config
+from gen3.infos_g3 import InfosG3
+from infos import Register
 
 logger = logging.getLogger('msg')
 
@@ -40,12 +32,19 @@ class Control:
 
 
 class Talent(Message):
-    MB_START_TIMEOUT = 40
-    MB_REGULAR_TIMEOUT = 60
     TXT_UNKNOWN_CTRL = 'Unknown Ctrl'
 
-    def __init__(self, server_side: bool, id_str=b''):
-        super().__init__(server_side, self.send_modbus_cb, mb_timeout=15)
+    def __init__(self, addr, ifc: "AsyncIfc", server_side: bool,
+                 client_mode: bool = False, id_str=b''):
+        super().__init__('G3', ifc, server_side, self.send_modbus_cb,
+                         mb_timeout=15)
+        ifc.rx_set_cb(self.read)
+        ifc.prot_set_timeout_cb(self._timeout)
+        ifc.prot_set_init_new_client_conn_cb(self._init_new_client_conn)
+        ifc.prot_set_update_header_cb(self._update_header)
+
+        self.addr = addr
+        self.conn_no = ifc.get_conn_no()
         self.await_conn_resp_cnt = 0
         self.id_str = id_str
         self.contact_name = b''
@@ -56,49 +55,37 @@ class Talent(Message):
             0x00: self.msg_contact_info,
             0x13: self.msg_ota_update,
             0x22: self.msg_get_time,
+            0x99: self.msg_heartbeat,
             0x71: self.msg_collector_data,
             # 0x76:
             0x77: self.msg_modbus,
             # 0x78:
+            0x87: self.msg_modbus2,
             0x04: self.msg_inverter_data,
         }
         self.log_lvl = {
             0x00: logging.INFO,
             0x13: logging.INFO,
             0x22: logging.INFO,
+            0x99: logging.INFO,
             0x71: logging.INFO,
             # 0x76:
             0x77: self.get_modbus_log_lvl,
             # 0x78:
+            0x87: self.get_modbus_log_lvl,
             0x04: logging.INFO,
         }
-        self.modbus_elms = 0    # for unit tests
-        self.node_id = 'G3'     # will be overwritten in __set_serial_no
-        self.mb_timer = Timer(self.mb_timout_cb, self.node_id)
-        self.mb_timeout = self.MB_REGULAR_TIMEOUT
-        self.mb_first_timeout = self.MB_START_TIMEOUT
-        self.modbus_polling = False
 
     '''
     Our puplic methods
     '''
     def close(self) -> None:
         logging.debug('Talent.close()')
-        if self.server_side:
-            # set inverter state to offline, if output power is very low
-            logging.debug('close power: '
-                          f'{self.db.get_db_value(Register.OUTPUT_POWER, -1)}')
-            if self.db.get_db_value(Register.OUTPUT_POWER, 999) < 2:
-                self.db.set_db_def_value(Register.INVERTER_STATUS, 0)
-                self.new_data['env'] = True
-
         # we have references to methods of this class in self.switch
         # so we have to erase self.switch, otherwise this instance can't be
         # deallocated by the garbage collector ==> we get a memory leak
         self.switch.clear()
         self.log_lvl.clear()
-        self.state = State.closed
-        self.mb_timer.close()
         super().close()
 
     def __set_serial_no(self, serial_no: str):
@@ -116,6 +103,8 @@ class Talent(Message):
                 self.modbus_polling = inv['modbus_polling']
                 logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}')  # noqa: E501
                 self.db.set_pv_module_details(inv)
+                if self.mb:
+                    self.mb.set_node_id(self.node_id)
             else:
                 self.node_id = ''
                 self.sug_area = ''
@@ -127,16 +116,17 @@ class Talent(Message):
                 logger.debug(f'SerialNo {serial_no} not known but accepted!')
 
             self.unique_id = serial_no
+            self.db.set_db_def_value(Register.COLLECTOR_SNR, serial_no)
 
     def read(self) -> float:
         '''process all received messages in the _recv_buffer'''
         self._read()
         while True:
             if not self.header_valid:
-                self.__parse_header(self._recv_buffer, len(self._recv_buffer))
+                self.__parse_header(self.ifc.rx_peek(), self.ifc.rx_len())
 
             if self.header_valid and \
-               len(self._recv_buffer) >= (self.header_len + self.data_len):
+               self.ifc.rx_len() >= (self.header_len + self.data_len):
                 if self.state == State.init:
                     self.state = State.received     # received 1st package
 
@@ -144,11 +134,10 @@ class Talent(Message):
                 if callable(log_lvl):
                     log_lvl = log_lvl()
 
-                hex_dump_memory(log_lvl, f'Received from {self.addr}:'
-                                f' BufLen: {len(self._recv_buffer)}'
+                self.ifc.rx_log(log_lvl, f'Received from {self.addr}:'
+                                f' BufLen: {self.ifc.rx_len()}'
                                 f' HdrLen: {self.header_len}'
-                                f' DtaLen: {self.data_len}',
-                                self._recv_buffer, len(self._recv_buffer))
+                                f' DtaLen: {self.data_len}')
 
                 self.__set_serial_no(self.id_str.decode("utf-8"))
                 self.__dispatch_msg()
@@ -160,11 +149,10 @@ class Talent(Message):
         '''add the actual receive msg to the forwarding queue'''
         tsun = Config.get('tsun')
         if tsun['enabled']:
-            buffer = self._recv_buffer
             buflen = self.header_len+self.data_len
-            self._forward_buffer += buffer[:buflen]
-            hex_dump_memory(logging.DEBUG, 'Store for forwarding:',
-                            buffer, buflen)
+            buffer = self.ifc.rx_peek(buflen)
+            self.ifc.fwd_add(buffer)
+            self.ifc.fwd_log(logging.DEBUG, 'Store for forwarding:')
 
             fnc = self.switch.get(self.msg_id, self.msg_unknown)
             logger.info(self.__flow_str(self.server_side, 'forwrd') +
@@ -177,25 +165,13 @@ class Talent(Message):
             return
 
         self.__build_header(0x70, 0x77)
-        self._send_buffer += b'\x00\x01\xa3\x28'   # magic ?
-        self._send_buffer += struct.pack('!B', len(modbus_pdu))
-        self._send_buffer += modbus_pdu
+        self.ifc.tx_add(b'\x00\x01\xa3\x28')   # magic ?
+        self.ifc.tx_add(struct.pack('!B', len(modbus_pdu)))
+        self.ifc.tx_add(modbus_pdu)
         self.__finish_send_msg()
 
-        hex_dump_memory(log_lvl, f'Send Modbus {state}:{self.addr}:',
-                        self._send_buffer, len(self._send_buffer))
-        self.writer.write(self._send_buffer)
-        self._send_buffer = bytearray(0)  # self._send_buffer[sent:]
-
-    def _send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
-        if self.state != State.up:
-            logger.log(log_lvl, f'[{self.node_id}] ignore MODBUS cmd,'
-                       ' as the state is not UP')
-            return
-        self.mb.build_msg(Modbus.INV_ADDR, func, addr, val, log_lvl)
-
-    async def send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
-        self._send_modbus_cmd(func, addr, val, log_lvl)
+        self.ifc.tx_log(log_lvl, f'Send Modbus {state}:{self.addr}:')
+        self.ifc.tx_flush()
 
     def mb_timout_cb(self, exp_cnt):
         self.mb_timer.start(self.mb_timeout)
@@ -213,9 +189,9 @@ class Talent(Message):
         self.msg_id = 0
         self.await_conn_resp_cnt += 1
         self.__build_header(0x91)
-        self._send_buffer += struct.pack(f'!{len(contact_name)+1}p'
-                                         f'{len(contact_mail)+1}p',
-                                         contact_name, contact_mail)
+        self.ifc.tx_add(struct.pack(f'!{len(contact_name)+1}p'
+                                    f'{len(contact_mail)+1}p',
+                                    contact_name, contact_mail))
 
         self.__finish_send_msg()
         return True
@@ -299,7 +275,7 @@ class Talent(Message):
             self.inc_counter('Invalid_Msg_Format')
 
             # erase broken recv buffer
-            self._recv_buffer = bytearray()
+            self.ifc.rx_clear()
             return
 
         hdr_len = 5+id_len+2
@@ -320,16 +296,17 @@ class Talent(Message):
     def __build_header(self, ctrl, msg_id=None) -> None:
         if not msg_id:
             msg_id = self.msg_id
-        self.send_msg_ofs = len(self._send_buffer)
-        self._send_buffer += struct.pack(f'!l{len(self.id_str)+1}pBB',
-                                         0, self.id_str, ctrl, msg_id)
+        self.send_msg_ofs = self.ifc.tx_len()
+        self.ifc.tx_add(struct.pack(f'!l{len(self.id_str)+1}pBB',
+                                    0, self.id_str, ctrl, msg_id))
         fnc = self.switch.get(msg_id, self.msg_unknown)
         logger.info(self.__flow_str(self.server_side, 'tx') +
                     f' Ctl: {int(ctrl):#02x} Msg: {fnc.__name__!r}')
 
     def __finish_send_msg(self) -> None:
-        _len = len(self._send_buffer) - self.send_msg_ofs
-        struct.pack_into('!l', self._send_buffer, self.send_msg_ofs, _len-4)
+        _len = self.ifc.tx_len() - self.send_msg_ofs
+        struct.pack_into('!l', self.ifc.tx_peek(), self.send_msg_ofs,
+                         _len-4)
 
     def __dispatch_msg(self) -> None:
         fnc = self.switch.get(self.msg_id, self.msg_unknown)
@@ -343,7 +320,7 @@ class Talent(Message):
                         f' Ctl: {int(self.ctrl):#02x} Msg: {fnc.__name__!r}')
 
     def __flush_recv_msg(self) -> None:
-        self._recv_buffer = self._recv_buffer[(self.header_len+self.data_len):]
+        self.ifc.rx_get(self.header_len+self.data_len)
         self.header_valid = False
 
     '''
@@ -353,7 +330,7 @@ class Talent(Message):
         if self.ctrl.is_ind():
             if self.server_side and self.__process_contact_info():
                 self.__build_header(0x91)
-                self._send_buffer += b'\x01'
+                self.ifc.tx_add(b'\x01')
                 self.__finish_send_msg()
             # don't forward this contact info here, we will build one
             # when the remote connection is established
@@ -367,19 +344,21 @@ class Talent(Message):
             self.forward()
 
     def __process_contact_info(self) -> bool:
-        result = struct.unpack_from('!B', self._recv_buffer, self.header_len)
+        buf = self.ifc.rx_peek()
+        result = struct.unpack_from('!B', buf, self.header_len)
         name_len = result[0]
-        if self.data_len < name_len+2:
+        if self.data_len == 1:  # this is a response withone status byte
             return False
-        result = struct.unpack_from(f'!{name_len+1}pB', self._recv_buffer,
-                                    self.header_len)
-        self.contact_name = result[0]
-        mail_len = result[1]
-        logger.info(f'name: {self.contact_name}')
+        if self.data_len >= name_len+2:
+            result = struct.unpack_from(f'!{name_len+1}pB', buf,
+                                        self.header_len)
+            self.contact_name = result[0]
+            mail_len = result[1]
+            logger.info(f'name: {self.contact_name}')
 
-        result = struct.unpack_from(f'!{mail_len+1}p', self._recv_buffer,
-                                    self.header_len+name_len+1)
-        self.contact_mail = result[0]
+            result = struct.unpack_from(f'!{mail_len+1}p', buf,
+                                        self.header_len+name_len+1)
+            self.contact_mail = result[0]
         logger.info(f'mail: {self.contact_mail}')
         return True
 
@@ -392,14 +371,16 @@ class Talent(Message):
                 ts = self._timestamp()
                 logger.debug(f'time: {ts:08x}')
                 self.__build_header(0x91)
-                self._send_buffer += struct.pack('!q', ts)
+                self.ifc.tx_add(struct.pack('!q', ts))
                 self.__finish_send_msg()
 
             elif self.data_len >= 8:
                 ts = self._timestamp()
-                result = struct.unpack_from('!q', self._recv_buffer,
+                result = struct.unpack_from('!q', self.ifc.rx_peek(),
                                             self.header_len)
                 self.ts_offset = result[0]-ts
+                if self.ifc.remote.stream:
+                    self.ifc.remote.stream.ts_offset = self.ts_offset
                 logger.debug(f'tsun-time: {int(result[0]):08x}'
                              f'  proxy-time: {ts:08x}'
                              f'  offset: {self.ts_offset}')
@@ -410,8 +391,42 @@ class Talent(Message):
 
         self.forward()
 
+    def msg_heartbeat(self):
+        if self.ctrl.is_ind():
+            if self.data_len == 9:
+                self.state = State.up  # allow MODBUS cmds
+                if (self.modbus_polling):
+                    self.mb_timer.start(self.mb_first_timeout)
+                    self.db.set_db_def_value(Register.POLLING_INTERVAL,
+                                             self.mb_timeout)
+                self.__build_header(0x99)
+                self.ifc.tx_add(b'\x02')
+                self.__finish_send_msg()
+
+                result = struct.unpack_from('!Bq', self.ifc.rx_peek(),
+                                            self.header_len)
+                resp_code = result[0]
+                ts = result[1]+self.ts_offset
+                logger.debug(f'inv-time: {int(result[1]):08x}'
+                             f'  tsun-time: {ts:08x}'
+                             f'  offset: {self.ts_offset}')
+                struct.pack_into('!Bq', self.ifc.rx_peek(),
+                                 self.header_len, resp_code, ts)
+        elif self.ctrl.is_resp():
+            result = struct.unpack_from('!B', self.ifc.rx_peek(),
+                                        self.header_len)
+            resp_code = result[0]
+            logging.debug(f'Heartbeat-RespCode: {resp_code}')
+            return
+        else:
+            logger.warning(self.TXT_UNKNOWN_CTRL)
+            self.inc_counter('Unknown_Ctrl')
+
+        self.forward()
+
     def parse_msg_header(self):
-        result = struct.unpack_from('!lB', self._recv_buffer, self.header_len)
+        result = struct.unpack_from('!lB', self.ifc.rx_peek(),
+                                    self.header_len)
 
         data_id = result[0]    # len of complete message
         id_len = result[1]     # len of variable id string
@@ -419,7 +434,7 @@ class Talent(Message):
 
         msg_hdr_len = 5+id_len+9
 
-        result = struct.unpack_from(f'!{id_len+1}pBq', self._recv_buffer,
+        result = struct.unpack_from(f'!{id_len+1}pBq', self.ifc.rx_peek(),
                                     self.header_len + 4)
 
         timestamp = result[2]
@@ -432,9 +447,9 @@ class Talent(Message):
     def msg_collector_data(self):
         if self.ctrl.is_ind():
             self.__build_header(0x99)
-            self._send_buffer += b'\x01'
+            self.ifc.tx_add(b'\x01')
             self.__finish_send_msg()
-            self.__process_data()
+            self.__process_data(False)
 
         elif self.ctrl.is_resp():
             return  # ignore received response
@@ -447,9 +462,9 @@ class Talent(Message):
     def msg_inverter_data(self):
         if self.ctrl.is_ind():
             self.__build_header(0x99)
-            self._send_buffer += b'\x01'
+            self.ifc.tx_add(b'\x01')
             self.__finish_send_msg()
-            self.__process_data()
+            self.__process_data(True)
             self.state = State.up  # allow MODBUS cmds
             if (self.modbus_polling):
                 self.mb_timer.start(self.mb_first_timeout)
@@ -464,10 +479,16 @@ class Talent(Message):
 
         self.forward()
 
-    def __process_data(self):
+    def __process_data(self, ignore_replay: bool):
         msg_hdr_len, ts = self.parse_msg_header()
+        if ignore_replay:
+            age = self._utc() - self._utcfromts(ts)
+            age = age/(3600*24)
+            logger.debug(f"Age: {age} days")
+            if age > 1:
+                return
 
-        for key, update in self.db.parse(self._recv_buffer, self.header_len
+        for key, update in self.db.parse(self.ifc.rx_peek(), self.header_len
                                          + msg_hdr_len, self.node_id):
             if update:
                 self._set_mqtt_timestamp(key, self._utcfromts(ts))
@@ -487,11 +508,20 @@ class Talent(Message):
 
         msg_hdr_len = 5
 
-        result = struct.unpack_from('!lBB', self._recv_buffer,
+        result = struct.unpack_from('!lBB', self.ifc.rx_peek(),
                                     self.header_len)
         modbus_len = result[1]
         return msg_hdr_len, modbus_len
 
+    def parse_modbus_header2(self):
+
+        msg_hdr_len = 6
+
+        result = struct.unpack_from('!lBBB', self.ifc.rx_peek(),
+                                    self.header_len)
+        modbus_len = result[2]
+        return msg_hdr_len, modbus_len
+
     def get_modbus_log_lvl(self) -> int:
         if self.ctrl.is_req():
             return logging.INFO
@@ -501,13 +531,19 @@ class Talent(Message):
 
     def msg_modbus(self):
         hdr_len, _ = self.parse_modbus_header()
-        data = self._recv_buffer[self.header_len:
-                                 self.header_len+self.data_len]
+        self.__msg_modbus(hdr_len)
+
+    def msg_modbus2(self):
+        hdr_len, _ = self.parse_modbus_header2()
+        self.__msg_modbus(hdr_len)
+
+    def __msg_modbus(self, hdr_len):
+        data = self.ifc.rx_peek()[self.header_len:
+                                  self.header_len+self.data_len]
 
         if self.ctrl.is_req():
-            if self.remote_stream.mb.recv_req(data[hdr_len:],
-                                              self.remote_stream.
-                                              msg_forward):
+            rstream = self.ifc.remote.stream
+            if rstream.mb.recv_req(data[hdr_len:], rstream.msg_forward):
                 self.inc_counter('Modbus_Command')
             else:
                 self.inc_counter('Invalid_Msg_Format')
@@ -520,8 +556,7 @@ class Talent(Message):
                 return
 
             for key, update, _ in self.mb.recv_resp(self.db, data[
-                    hdr_len:],
-                    self.node_id):
+                    hdr_len:]):
                 if update:
                     self._set_mqtt_timestamp(key, self._utc())
                     self.new_data[key] = True

app/src/gen3plus/connection_g3p.py

@@ -1,47 +0,0 @@
-import logging
-from asyncio import StreamReader, StreamWriter
-
-if __name__ == "app.src.gen3plus.connection_g3p":
-    from app.src.async_stream import AsyncStream
-    from app.src.gen3plus.solarman_v5 import SolarmanV5
-else:  # pragma: no cover
-    from async_stream import AsyncStream
-    from gen3plus.solarman_v5 import SolarmanV5
-
-logger = logging.getLogger('conn')
-
-
-class ConnectionG3P(AsyncStream, SolarmanV5):
-
-    def __init__(self, reader: StreamReader, writer: StreamWriter,
-                 addr, remote_stream: 'ConnectionG3P',
-                 server_side: bool,
-                 client_mode: bool) -> None:
-        AsyncStream.__init__(self, reader, writer, addr)
-        SolarmanV5.__init__(self, server_side, client_mode)
-
-        self.remote_stream: 'ConnectionG3P' = remote_stream
-
-    '''
-    Our puplic methods
-    '''
-    def close(self):
-        AsyncStream.close(self)
-        SolarmanV5.close(self)
-        #  logger.info(f'AsyncStream refs: {gc.get_referrers(self)}')
-
-    async def async_create_remote(self) -> None:
-        pass  # virtual interface # pragma: no cover
-
-    async def async_publ_mqtt(self) -> None:
-        pass  # virtual interface # pragma: no cover
-
-    def healthy(self) -> bool:
-        logger.debug('ConnectionG3P healthy()')
-        return AsyncStream.healthy(self)
-
-    '''
-    Our private methods
-    '''
-    def __del__(self):
-        super().__del__()

app/src/gen3plus/infos_g3p.py

@@ -1,38 +1,57 @@
 
-import struct
 from typing import Generator
 
-if __name__ == "app.src.gen3plus.infos_g3p":
-    from app.src.infos import Infos, Register, ProxyMode
-else:  # pragma: no cover
-    from infos import Infos, Register, ProxyMode
+from infos import Infos, Register, ProxyMode, Fmt
 
 
 class RegisterMap:
     # make the class read/only by using __slots__
-
     __slots__ = ()
+
+    FMT_2_16BIT_VAL = '!HH'
+    FMT_3_16BIT_VAL = '!HHH'
+    FMT_4_16BIT_VAL = '!HHHH'
+
     map = {
         # 0x41020007: {'reg': Register.DEVICE_SNR,           'fmt': '<L'},                 # noqa: E501
-        0x41020018: {'reg': Register.DATA_UP_INTERVAL,     'fmt': '<B', 'ratio':   60, 'dep': ProxyMode.SERVER},  # noqa: E501
-        0x41020019: {'reg': Register.COLLECT_INTERVAL,     'fmt': '<B', 'eval': 'round(result/60)', 'dep': ProxyMode.SERVER},  # noqa: E501
+        0x41020018: {'reg': Register.DATA_UP_INTERVAL,     'fmt': '<B', 'ratio':    60, 'dep': ProxyMode.SERVER},  # noqa: E501
+        0x41020019: {'reg': Register.COLLECT_INTERVAL,     'fmt': '<B', 'quotient': 60, 'dep': ProxyMode.SERVER},  # noqa: E501
         0x4102001a: {'reg': Register.HEARTBEAT_INTERVAL,   'fmt': '<B', 'ratio':    1},  # noqa: E501
+        0x4102001b: {'reg': None,                          'fmt': '<B', 'const':    1},  # noqa: E501 Max No Of Connected Devices
         0x4102001c: {'reg': Register.SIGNAL_STRENGTH,      'fmt': '<B', 'ratio':    1, 'dep': ProxyMode.SERVER},  # noqa: E501
+        0x4102001d: {'reg': None,                          'fmt': '<B', 'const':    1},  # noqa: E501
         0x4102001e: {'reg': Register.CHIP_MODEL,           'fmt': '!40s'},               # noqa: E501
+        0x41020046: {'reg': Register.MAC_ADDR,             'fmt': '!6B', 'func': Fmt.mac},  # noqa: E501
         0x4102004c: {'reg': Register.IP_ADDRESS,           'fmt': '!16s'},               # noqa: E501
-        0x4102005f: {'reg': Register.SENSOR_LIST,          'fmt': '<H', 'eval': "f'{result:04x}'"},                 # noqa: E501
+        0x4102005c: {'reg': None,                          'fmt': '<B', 'const':   15},  # noqa: E501
+        0x4102005e: {'reg': None,                          'fmt': '<B', 'const':    1},  # noqa: E501 No Of Sensors (ListLen)
+        0x4102005f: {'reg': Register.SENSOR_LIST,          'fmt': '<H', 'func': Fmt.hex4},   # noqa: E501
+        0x41020061: {'reg': None,                          'fmt': '<HB', 'const':  (15, 255)},  # noqa: E501
         0x41020064: {'reg': Register.COLLECTOR_FW_VERSION, 'fmt': '!40s'},               # noqa: E501
+        0x4102008c: {'reg': None,                          'fmt': '<BB', 'const':  (254, 254)},  # noqa: E501
+        0x4102008e: {'reg': None,                          'fmt': '<B'},                 # noqa: E501 Encryption Certificate File Status
+        0x4102008f: {'reg': None,                          'fmt': '!40s'},               # noqa: E501
+        0x410200b7: {'reg': Register.SSID,                 'fmt': '!40s'},               # noqa: E501
 
-        0x4201000c: {'reg': Register.SENSOR_LIST,          'fmt': '<H', 'eval': "f'{result:04x}'"},                 # noqa: E501
+        0x4201000c: {'reg': Register.SENSOR_LIST,          'fmt': '<H', 'func': Fmt.hex4},   # noqa: E501
         0x4201001c: {'reg': Register.POWER_ON_TIME,        'fmt': '<H', 'ratio':    1, 'dep': ProxyMode.SERVER},  # noqa: E501, or packet number
         0x42010020: {'reg': Register.SERIAL_NUMBER,        'fmt': '!16s'},               # noqa: E501
+
+        # Start MODBUS Block: 0x3000 (R/O Measurements)
         0x420100c0: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
-        0x420100d0: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf}'"},  # noqa: E501
+        0x420100c2: {'reg': Register.DETECT_STATUS_1,      'fmt': '!H'},                 # noqa: E501
+        0x420100c4: {'reg': Register.DETECT_STATUS_2,      'fmt': '!H'},                 # noqa: E501
+        0x420100c6: {'reg': Register.EVENT_ALARM,          'fmt': '!H'},                 # noqa: E501
+        0x420100c8: {'reg': Register.EVENT_FAULT,          'fmt': '!H'},                 # noqa: E501
+        0x420100ca: {'reg': Register.EVENT_BF1,            'fmt': '!H'},                 # noqa: E501
+        0x420100cc: {'reg': Register.EVENT_BF2,            'fmt': '!H'},                 # noqa: E501
+        # 0x420100ce
+        0x420100d0: {'reg': Register.VERSION,              'fmt': '!H', 'func': Fmt.version},  # noqa: E501
         0x420100d2: {'reg': Register.GRID_VOLTAGE,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
         0x420100d4: {'reg': Register.GRID_CURRENT,         'fmt': '!H', 'ratio': 0.01},  # noqa: E501
         0x420100d6: {'reg': Register.GRID_FREQUENCY,       'fmt': '!H', 'ratio': 0.01},  # noqa: E501
-        0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'eval': 'result-40'},  # noqa: E501
-        # 0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H'},                 # noqa: E501
+        0x420100d8: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'offset': -40},  # noqa: E501
+        # 0x420100da
         0x420100dc: {'reg': Register.RATED_POWER,          'fmt': '!H', 'ratio':    1},  # noqa: E501
         0x420100de: {'reg': Register.OUTPUT_POWER,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
         0x420100e0: {'reg': Register.PV1_VOLTAGE,          'fmt': '!H', 'ratio':  0.1},  # noqa: E501
@@ -57,16 +76,45 @@ class RegisterMap:
         0x4201010c: {'reg': Register.PV3_TOTAL_GENERATION, 'fmt': '!L', 'ratio': 0.01},  # noqa: E501
         0x42010110: {'reg': Register.PV4_DAILY_GENERATION, 'fmt': '!H', 'ratio': 0.01},  # noqa: E501
         0x42010112: {'reg': Register.PV4_TOTAL_GENERATION, 'fmt': '!L', 'ratio': 0.01},  # noqa: E501
-        0x42010126: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':    1},  # noqa: E501
+        0x42010116: {'reg': Register.INV_UNKNOWN_1,        'fmt': '!H'},                 # noqa: E501
+
+        # Start MODBUS Block: 0x2000 (R/W Config Paramaneters)
+        0x42010118: {'reg': Register.BOOT_STATUS,          'fmt': '!H'},
+        0x4201011a: {'reg': Register.DSP_STATUS,           'fmt': '!H'},
+        0x4201011c: {'reg': None,                          'fmt': '!H', 'const':    1},  # noqa: E501
+        0x4201011e: {'reg': Register.WORK_MODE,            'fmt': '!H'},
+        0x42010124: {'reg': Register.OUTPUT_SHUTDOWN,      'fmt': '!H'},
+        0x42010126: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H'},
+        0x42010128: {'reg': Register.RATED_LEVEL,          'fmt': '!H'},
+        0x4201012a: {'reg': Register.INPUT_COEFFICIENT,    'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
+        0x4201012c: {'reg': Register.GRID_VOLT_CAL_COEF,   'fmt': '!H'},
+        0x4201012e: {'reg': None,                          'fmt': '!H', 'const':   1024},  # noqa: E501
+        0x42010130: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (1024, 1, 0xffff, 1)},  # noqa: E501
+        0x42010138: {'reg': Register.PROD_COMPL_TYPE,      'fmt': '!H'},
+        0x4201013a: {'reg': None,                          'fmt': FMT_3_16BIT_VAL, 'const': (0x68, 0x68, 0x500)},  # noqa: E501
+        0x42010140: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x9cd, 0x7b6, 0x139c, 0x1324)},  # noqa: E501
+        0x42010148: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (1, 0x7ae, 0x40f, 0x41)},  # noqa: E501
+        0x42010150: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0xf, 0xa64, 0xa64, 0x6)},  # noqa: E501
+        0x42010158: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x6, 0x9f6, 0x128c, 0x128c)},  # noqa: E501
+        0x42010160: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x10, 0x10, 0x1452, 0x1452)},  # noqa: E501
+        0x42010168: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x10, 0x10, 0x151, 0x5)},  # noqa: E501
+        0x42010170: {'reg': Register.OUTPUT_COEFFICIENT,   'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
+        0x42010172: {'reg': None,                          'fmt': FMT_3_16BIT_VAL, 'const':  (0x1, 0x139c, 0xfa0)},  # noqa: E501
+        0x42010178: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x4e, 0x66, 0x3e8, 0x400)},  # noqa: E501
+        0x42010180: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x9ce, 0x7a8, 0x139c, 0x1326)},  # noqa: E501
+        0x42010188: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x0, 0x0, 0x0, 0)},  # noqa: E501
+        0x42010190: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0x0, 0x0, 1024, 1024)},  # noqa: E501
+        0x42010198: {'reg': None,                          'fmt': FMT_4_16BIT_VAL, 'const': (0, 0, 0xffff, 0)},  # noqa: E501
+        0x420101a0: {'reg': None,                          'fmt': FMT_2_16BIT_VAL, 'const': (0x0, 0x0)},  # noqa: E501
 
-        0xffffff01: {'reg': Register.OUTPUT_COEFFICIENT},
         0xffffff02: {'reg': Register.POLLING_INTERVAL},
         # 0x4281001c: {'reg': Register.POWER_ON_TIME,        'fmt': '<H', 'ratio':    1},  # noqa: E501
-
     }
 
 
 class InfosG3P(Infos):
+    __slots__ = ('client_mode', )
+
     def __init__(self, client_mode: bool):
         super().__init__()
         self.client_mode = client_mode
@@ -120,7 +168,7 @@ class InfosG3P(Infos):
             if not isinstance(row, dict):
                 continue
             info_id = row['reg']
-            result = self.__get_value(buf, addr, row)
+            result = Fmt.get_value(buf, addr, row)
 
             keys, level, unit, must_incr = self._key_obj(info_id)
 
@@ -135,15 +183,22 @@ class InfosG3P(Infos):
                 self.tracer.log(level, f'[{node_id}] GEN3PLUS: {name}'
                                        f' : {result}{unit}')
 
-    def __get_value(self, buf, idx, row):
-        '''Get a value from buf and interpret as in row'''
-        fmt = row['fmt']
-        res = struct.unpack_from(fmt, buf, idx)
-        result = res[0]
-        if isinstance(result, (bytearray, bytes)):
-            result = result.decode().split('\x00')[0]
-        if 'eval' in row:
-            result = eval(row['eval'])
-        if 'ratio' in row:
-            result = round(result * row['ratio'], 2)
-        return result
+    def build(self, len, msg_type: int, rcv_ftype: int):
+        buf = bytearray(len)
+        for idx, row in RegisterMap.map.items():
+            addr = idx & 0xffff
+            ftype = (idx >> 16) & 0xff
+            mtype = (idx >> 24) & 0xff
+            if ftype != rcv_ftype or mtype != msg_type:
+                continue
+            if not isinstance(row, dict):
+                continue
+            if 'const' in row:
+                val = row['const']
+            else:
+                info_id = row['reg']
+                val = self.get_db_value(info_id)
+            if not val:
+                continue
+            Fmt.set_value(buf, addr, row, val)
+        return buf

app/src/gen3plus/inverter_g3p.py

@@ -1,140 +1,15 @@
-import logging
-import traceback
-import json
-import asyncio
 from asyncio import StreamReader, StreamWriter
-from aiomqtt import MqttCodeError
 
-if __name__ == "app.src.gen3plus.inverter_g3p":
-    from app.src.config import Config
-    from app.src.inverter import Inverter
-    from app.src.gen3plus.connection_g3p import ConnectionG3P
-    from app.src.infos import Infos
-else:  # pragma: no cover
-    from config import Config
-    from inverter import Inverter
-    from gen3plus.connection_g3p import ConnectionG3P
-    from infos import Infos
+from inverter_base import InverterBase
+from gen3plus.solarman_v5 import SolarmanV5
+from gen3plus.solarman_emu import SolarmanEmu
 
 
-logger_mqtt = logging.getLogger('mqtt')
-
-
-class InverterG3P(Inverter, ConnectionG3P):
-    '''class Inverter is a derivation of an Async_Stream
-
-    The class has some class method for managing common resources like a
-    connection to the MQTT broker or proxy error counter which are common
-    for all inverter connection
-
-    Instances of the class are connections to an inverter and can have an
-    optional link to an remote connection to the TSUN cloud. A remote
-    connection dies with the inverter connection.
-
-    class methods:
-        class_init():  initialize the common resources of the proxy (MQTT
-                       broker, Proxy DB, etc). Must be called before the
-                       first inverter instance can be created
-        class_close(): release the common resources of the proxy. Should not
-                       be called before any instances of the class are
-                       destroyed
-
-    methods:
-        server_loop(addr): Async loop method for receiving messages from the
-                           inverter (server-side)
-        client_loop(addr): Async loop method for receiving messages from the
-                           TSUN cloud (client-side)
-        async_create_remote(): Establish a client connection to the TSUN cloud
-        async_publ_mqtt(): Publish data to MQTT broker
-        close(): Release method which must be called before a instance can be
-                 destroyed
-    '''
-
-    def __init__(self, reader: StreamReader, writer: StreamWriter, addr,
+class InverterG3P(InverterBase):
+    def __init__(self, reader: StreamReader, writer: StreamWriter,
                  client_mode: bool = False):
-        super().__init__(reader, writer, addr, None,
-                         server_side=True, client_mode=client_mode)
-        self.__ha_restarts = -1
-
-    async def async_create_remote(self) -> None:
-        '''Establish a client connection to the TSUN cloud'''
-        tsun = Config.get('solarman')
-        host = tsun['host']
-        port = tsun['port']
-        addr = (host, port)
-
-        try:
-            logging.info(f'[{self.node_id}] Connect to {addr}')
-            connect = asyncio.open_connection(host, port)
-            reader, writer = await connect
-            self.remote_stream = ConnectionG3P(reader, writer, addr, self,
-                                               server_side=False,
-                                               client_mode=False)
-            logging.info(f'[{self.remote_stream.node_id}:'
-                         f'{self.remote_stream.conn_no}] '
-                         f'Connected to {addr}')
-            asyncio.create_task(self.client_loop(addr))
-
-        except (ConnectionRefusedError, TimeoutError) as error:
-            logging.info(f'{error}')
-        except Exception:
-            self.inc_counter('SW_Exception')
-            logging.error(
-                f"Inverter: Exception for {addr}:\n"
-                f"{traceback.format_exc()}")
-
-    async def async_publ_mqtt(self) -> None:
-        '''publish data to MQTT broker'''
-        # check if new inverter or collector infos are available or when the
-        #  home assistant has changed the status back to online
-        try:
-            if (('inverter' in self.new_data and self.new_data['inverter'])
-                    or ('collector' in self.new_data and
-                        self.new_data['collector'])
-                    or self.mqtt.ha_restarts != self.__ha_restarts):
-                await self._register_proxy_stat_home_assistant()
-                await self.__register_home_assistant()
-                self.__ha_restarts = self.mqtt.ha_restarts
-
-            for key in self.new_data:
-                await self.__async_publ_mqtt_packet(key)
-            for key in Infos.new_stat_data:
-                await self._async_publ_mqtt_proxy_stat(key)
-
-        except MqttCodeError as error:
-            logging.error(f'Mqtt except: {error}')
-        except Exception:
-            self.inc_counter('SW_Exception')
-            logging.error(
-                f"Inverter: Exception:\n"
-                f"{traceback.format_exc()}")
-
-    async def __async_publ_mqtt_packet(self, key):
-        db = self.db.db
-        if key in db and self.new_data[key]:
-            data_json = json.dumps(db[key])
-            node_id = self.node_id
-            logger_mqtt.debug(f'{key}: {data_json}')
-            await self.mqtt.publish(f'{self.entity_prfx}{node_id}{key}', data_json)  # noqa: E501
-            self.new_data[key] = False
-
-    async def __register_home_assistant(self) -> None:
-        '''register all our topics at home assistant'''
-        for data_json, component, node_id, id in self.db.ha_confs(
-                self.entity_prfx, self.node_id, self.unique_id,
-                self.sug_area):
-            logger_mqtt.debug(f"MQTT Register: cmp:'{component}'"
-                              f" node_id:'{node_id}' {data_json}")
-            await self.mqtt.publish(f"{self.discovery_prfx}{component}"
-                                    f"/{node_id}{id}/config", data_json)
-
-        self.db.reg_clr_at_midnight(f'{self.entity_prfx}{self.node_id}')
-
-    def close(self) -> None:
-        logging.debug(f'InverterG3P.close() l{self.l_addr} | r{self.r_addr}')
-        super().close()         # call close handler in the parent class
-#        logger.debug (f'Inverter refs: {gc.get_referrers(self)}')
-
-    def __del__(self):
-        logging.debug("InverterG3P.__del__")
-        super().__del__()
+        remote_prot = None
+        if client_mode:
+            remote_prot = SolarmanEmu
+        super().__init__(reader, writer, 'solarman',
+                         SolarmanV5, client_mode, remote_prot)

app/src/gen3plus/solarman_emu.py

@@ -0,0 +1,138 @@
+import logging
+import struct
+
+from async_ifc import AsyncIfc
+from gen3plus.solarman_v5 import SolarmanBase
+from my_timer import Timer
+from infos import Register
+
+logger = logging.getLogger('msg')
+
+
+class SolarmanEmu(SolarmanBase):
+    def __init__(self, addr, ifc: "AsyncIfc",
+                 server_side: bool, client_mode: bool):
+        super().__init__(addr, ifc, server_side=False,
+                         _send_modbus_cb=None,
+                         mb_timeout=8)
+        logging.debug('SolarmanEmu.init()')
+        self.db = ifc.remote.stream.db
+        self.snr = ifc.remote.stream.snr
+        self.hb_timeout = 60
+        '''actual heatbeat timeout from the last response message'''
+        self.data_up_inv = self.db.get_db_value(Register.DATA_UP_INTERVAL)
+        '''time interval for getting new MQTT data messages'''
+        self.hb_timer = Timer(self.send_heartbeat_cb, self.node_id)
+        self.data_timer = Timer(self.send_data_cb, self.node_id)
+        self.last_sync = self._emu_timestamp()
+        '''timestamp when we send the last sync message (4110)'''
+        self.pkt_cnt = 0
+        '''last sent packet number'''
+
+        self.switch = {
+
+            0x4210: 'msg_data_ind',      # real time data
+            0x1210: self.msg_response,   # at least every 5 minutes
+
+            0x4710: 'msg_hbeat_ind',     # heatbeat
+            0x1710: self.msg_response,   # every 2 minutes
+
+            0x4110: 'msg_dev_ind',        # device data, sync start
+            0x1110: self.msg_response,    # every 3 hours
+
+        }
+
+        self.log_lvl = {
+
+            0x4110: logging.INFO,   # device data, sync start
+            0x1110: logging.INFO,   # every 3 hours
+
+            0x4210: logging.INFO,   # real time data
+            0x1210: logging.INFO,   # at least every 5 minutes
+
+            0x4710: logging.DEBUG,  # heatbeat
+            0x1710: logging.DEBUG,  # every 2 minutes
+
+        }
+
+    '''
+    Our puplic methods
+    '''
+    def close(self) -> None:
+        logging.info('SolarmanEmu.close()')
+        # we have references to methods of this class in self.switch
+        # so we have to erase self.switch, otherwise this instance can't be
+        # deallocated by the garbage collector ==> we get a memory leak
+        self.switch.clear()
+        self.log_lvl.clear()
+        self.hb_timer.close()
+        self.data_timer.close()
+        self.db = None
+        super().close()
+
+    def _set_serial_no(self, snr: int):
+        logging.debug(f'SolarmanEmu._set_serial_no, snr: {snr}')
+        self.unique_id = str(snr)
+
+    def _init_new_client_conn(self) -> bool:
+        logging.debug('SolarmanEmu.init_new()')
+        self.data_timer.start(self.data_up_inv)
+        return False
+
+    def next_pkt_cnt(self):
+        '''get the next packet number'''
+        self.pkt_cnt = (self.pkt_cnt + 1) & 0xffffffff
+        return self.pkt_cnt
+
+    def seconds_since_last_sync(self):
+        '''get seconds since last 0x4110 message was sent'''
+        return self._emu_timestamp() - self.last_sync
+
+    def send_heartbeat_cb(self, exp_cnt):
+        '''send a heartbeat to the TSUN cloud'''
+        self._build_header(0x4710)
+        self.ifc.tx_add(struct.pack('<B', 0))
+        self._finish_send_msg()
+        log_lvl = self.log_lvl.get(0x4710, logging.WARNING)
+        self.ifc.tx_log(log_lvl, 'Send heartbeat:')
+        self.ifc.tx_flush()
+
+    def send_data_cb(self, exp_cnt):
+        '''send a inverter data message to the TSUN cloud'''
+        self.hb_timer.start(self.hb_timeout)
+        self.data_timer.start(self.data_up_inv)
+        _len = 420
+        ftype = 1
+        build_msg = self.db.build(_len, 0x42, ftype)
+
+        self._build_header(0x4210)
+        self.ifc.tx_add(
+            struct.pack(
+                '<BHLLLHL', ftype, 0x02b0,
+                self._emu_timestamp(),
+                self.seconds_since_last_sync(),
+                self.time_ofs,
+                1,  # offset 0x1a
+                self.next_pkt_cnt()))
+        self.ifc.tx_add(build_msg[0x20:])
+        self._finish_send_msg()
+        log_lvl = self.log_lvl.get(0x4210, logging.WARNING)
+        self.ifc.tx_log(log_lvl, 'Send inv-data:')
+        self.ifc.tx_flush()
+
+    '''
+    Message handler methods
+    '''
+    def msg_response(self):
+        '''handle a received response from the TSUN cloud'''
+        logger.debug("EMU received rsp:")
+        _, _, ts, hb = super().msg_response()
+        logger.debug(f"EMU ts:{ts} hb:{hb}")
+        self.hb_timeout = hb
+        self.time_ofs = ts - self._emu_timestamp()
+        self.hb_timer.start(self.hb_timeout)
+
+    def msg_unknown(self):
+        '''counts a unknown or unexpected message from the TSUN cloud'''
+        logger.warning(f"EMU Unknow Msg: ID:{int(self.control):#04x}")
+        self.inc_counter('Unknown_Msg')

app/src/gen3plus/solarman_v5.py

@@ -4,20 +4,12 @@ import time
 import asyncio
 from datetime import datetime
 
-if __name__ == "app.src.gen3plus.solarman_v5":
-    from app.src.messages import hex_dump_memory, Message, State
-    from app.src.modbus import Modbus
-    from app.src.my_timer import Timer
-    from app.src.config import Config
-    from app.src.gen3plus.infos_g3p import InfosG3P
-    from app.src.infos import Register
-else:  # pragma: no cover
-    from messages import hex_dump_memory, Message, State
-    from config import Config
-    from modbus import Modbus
-    from my_timer import Timer
-    from gen3plus.infos_g3p import InfosG3P
-    from infos import Register
+from async_ifc import AsyncIfc
+from messages import hex_dump_memory, Message, State
+from cnf.config import Config
+from modbus import Modbus
+from gen3plus.infos_g3p import InfosG3P
+from infos import Register, Fmt
 
 logger = logging.getLogger('msg')
 
@@ -48,30 +40,227 @@ class Sequence():
         return f'{self.rcv_idx:02x}:{self.snd_idx:02x}'
 
 
-class SolarmanV5(Message):
+class SolarmanBase(Message):
+    def __init__(self, addr, ifc: "AsyncIfc", server_side: bool,
+                 _send_modbus_cb, mb_timeout: int):
+        super().__init__('G3P', ifc, server_side, _send_modbus_cb,
+                         mb_timeout)
+        ifc.rx_set_cb(self.read)
+        ifc.prot_set_timeout_cb(self._timeout)
+        ifc.prot_set_init_new_client_conn_cb(self._init_new_client_conn)
+        ifc.prot_set_update_header_cb(self.__update_header)
+        self.addr = addr
+        self.conn_no = ifc.get_conn_no()
+        self.header_len = 11  # overwrite construcor in class Message
+        self.control = 0
+        self.seq = Sequence(server_side)
+        self.snr = 0
+        self.time_ofs = 0
+
+    def read(self) -> float:
+        '''process all received messages in the _recv_buffer'''
+        self._read()
+        while True:
+            if not self.header_valid:
+                self.__parse_header(self.ifc.rx_peek(),
+                                    self.ifc.rx_len())
+
+            if self.header_valid and self.ifc.rx_len() >= \
+               (self.header_len + self.data_len+2):
+                self.__process_complete_received_msg()
+                self.__flush_recv_msg()
+            else:
+                return 0  # wait 0s before sending a response
+    '''
+    Our public methods
+    '''
+    def _flow_str(self, server_side: bool, type: str):  # noqa: F821
+        switch = {
+            'rx':      '  <',
+            'tx':      '  >',
+            'forwrd':  '<< ',
+            'drop':    ' xx',
+            'rxS':     '>  ',
+            'txS':     '<  ',
+            'forwrdS': ' >>',
+            'dropS':   'xx ',
+        }
+        if server_side:
+            type += 'S'
+        return switch.get(type, '???')
+
+    def get_fnc_handler(self, ctrl):
+        fnc = self.switch.get(ctrl, self.msg_unknown)
+        if callable(fnc):
+            return fnc, repr(fnc.__name__)
+        else:
+            return self.msg_unknown, repr(fnc)
+
+    def _build_header(self, ctrl) -> None:
+        '''build header for new transmit message'''
+        self.send_msg_ofs = self.ifc.tx_len()
+
+        self.ifc.tx_add(struct.pack(
+            '<BHHHL', 0xA5, 0, ctrl, self.seq.get_send(), self.snr))
+        _fnc, _str = self.get_fnc_handler(ctrl)
+        logger.info(self._flow_str(self.server_side, 'tx') +
+                    f' Ctl: {int(ctrl):#04x} Msg: {_str}')
+
+    def _finish_send_msg(self) -> None:
+        '''finish the transmit message, set lenght and checksum'''
+        _len = self.ifc.tx_len() - self.send_msg_ofs
+        struct.pack_into('<H', self.ifc.tx_peek(), self.send_msg_ofs+1,
+                         _len-11)
+        check = sum(self.ifc.tx_peek()[
+            self.send_msg_ofs+1:self.send_msg_ofs + _len]) & 0xff
+        self.ifc.tx_add(struct.pack('<BB', check, 0x15))    # crc & stop
+
+    def _timestamp(self):
+        # utc as epoche
+        return int(time.time())    # pragma: no cover
+
+    def _emu_timestamp(self):
+        '''timestamp for an emulated inverter (realtime - 1 day)'''
+        one_day = 24*60*60
+        return self._timestamp()-one_day
+
+    '''
+    Our private methods
+    '''
+    def __update_header(self, _forward_buffer):
+        '''update header for message before forwarding,
+        set sequence and checksum'''
+        _len = len(_forward_buffer)
+        ofs = 0
+        while ofs < _len:
+            result = struct.unpack_from('<BH', _forward_buffer, ofs)
+            data_len = result[1]    # len of variable id string
+
+            struct.pack_into('<H', _forward_buffer, ofs+5,
+                             self.seq.get_send())
+
+            check = sum(_forward_buffer[ofs+1:ofs+data_len+11]) & 0xff
+            struct.pack_into('<B', _forward_buffer, ofs+data_len+11, check)
+            ofs += (13 + data_len)
+
+    def __process_complete_received_msg(self):
+        log_lvl = self.log_lvl.get(self.control, logging.WARNING)
+        if callable(log_lvl):
+            log_lvl = log_lvl()
+        self.ifc.rx_log(log_lvl, f'Received from {self.addr}:')
+        # self._recv_buffer, self.header_len +
+        # self.data_len+2)
+        if self.__trailer_is_ok(self.ifc.rx_peek(), self.header_len
+                                + self.data_len + 2):
+            if self.state == State.init:
+                self.state = State.received
+            self._set_serial_no(self.snr)
+            self.__dispatch_msg()
+
+    def __parse_header(self, buf: bytes, buf_len: int) -> None:
+
+        if (buf_len < self.header_len):  # enough bytes for complete header?
+            return
+
+        result = struct.unpack_from('<BHHHL', buf, 0)
+
+        # store parsed header values in the class
+        start = result[0]            # start byte
+        self.data_len = result[1]    # len of variable id string
+        self.control = result[2]
+        self.seq.set_recv(result[3])
+        self.snr = result[4]
+
+        if start != 0xA5:
+            hex_dump_memory(logging.ERROR,
+                            'Drop packet w invalid start byte from'
+                            f' {self.addr}:', buf, buf_len)
+
+            self.inc_counter('Invalid_Msg_Format')
+            # erase broken recv buffer
+            self.ifc.rx_clear()
+            return
+        self.header_valid = True
+
+    def __trailer_is_ok(self, buf: bytes, buf_len: int) -> bool:
+        crc = buf[self.data_len+11]
+        stop = buf[self.data_len+12]
+        if stop != 0x15:
+            hex_dump_memory(logging.ERROR,
+                            'Drop packet w invalid stop byte from '
+                            f'{self.addr}:', buf, buf_len)
+            self.inc_counter('Invalid_Msg_Format')
+            if self.ifc.rx_len() > (self.data_len+13):
+                next_start = buf[self.data_len+13]
+                if next_start != 0xa5:
+                    # erase broken recv buffer
+                    self.ifc.rx_clear()
+
+            return False
+
+        check = sum(buf[1:buf_len-2]) & 0xff
+        if check != crc:
+            self.inc_counter('Invalid_Msg_Format')
+            logger.debug(f'CRC {int(crc):#02x} {int(check):#08x}'
+                         f' Stop:{int(stop):#02x}')
+            # start & stop byte are valid, discard only this message
+            return False
+
+        return True
+
+    def __flush_recv_msg(self) -> None:
+        self.ifc.rx_get(self.header_len + self.data_len+2)
+        self.header_valid = False
+
+    def __dispatch_msg(self) -> None:
+        _fnc, _str = self.get_fnc_handler(self.control)
+        if self.unique_id:
+            logger.info(self._flow_str(self.server_side, 'rx') +
+                        f' Ctl: {int(self.control):#04x}' +
+                        f' Msg: {_str}')
+            _fnc()
+        else:
+            logger.info(self._flow_str(self.server_side, 'drop') +
+                        f' Ctl: {int(self.control):#04x}' +
+                        f' Msg: {_str}')
+
+    '''
+    Message handler methods
+    '''
+    def msg_response(self):
+        data = self.ifc.rx_peek()[self.header_len:]
+        result = struct.unpack_from('<BBLL', data, 0)
+        ftype = result[0]  # always 2
+        valid = result[1] == 1  # status
+        ts = result[2]
+        set_hb = result[3]  # always 60 or 120
+        logger.debug(f'ftype:{ftype} accepted:{valid}'
+                     f' ts:{ts:08x}  nextHeartbeat: {set_hb}s')
+
+        dt = datetime.fromtimestamp(ts)
+        logger.debug(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')
+        return ftype, valid, ts, set_hb
+
+
+class SolarmanV5(SolarmanBase):
     AT_CMD = 1
     MB_RTU_CMD = 2
-    MB_START_TIMEOUT = 40
-    '''start delay for Modbus polling in server mode'''
-    MB_REGULAR_TIMEOUT = 60
-    '''regular Modbus polling time in server mode'''
     MB_CLIENT_DATA_UP = 30
     '''Data up time in client mode'''
     HDR_FMT = '<BLLL'
     '''format string for packing of the header'''
 
-    def __init__(self, server_side: bool, client_mode: bool):
-        super().__init__(server_side, self.send_modbus_cb, mb_timeout=8)
+    def __init__(self, addr, ifc: "AsyncIfc",
+                 server_side: bool, client_mode: bool):
+        super().__init__(addr, ifc, server_side, self.send_modbus_cb,
+                         mb_timeout=8)
 
-        self.header_len = 11  # overwrite construcor in class Message
-        self.control = 0
-        self.seq = Sequence(server_side)
-        self.snr = 0
         self.db = InfosG3P(client_mode)
-        self.time_ofs = 0
         self.forward_at_cmd_resp = False
         self.no_forwarding = False
         '''not allowed to connect to TSUN cloud by connection type'''
+        self.establish_inv_emu = False
+        '''create an Solarman EMU instance to send data to the TSUN cloud'''
         self.switch = {
 
             0x4210: self.msg_data_ind,   # real time data
@@ -126,53 +315,44 @@ class SolarmanV5(Message):
             0x4510: logging.INFO,  # from server
             0x1510: self.get_cmd_rsp_log_lvl,
         }
-        self.modbus_elms = 0    # for unit tests
         g3p_cnf = Config.get('gen3plus')
 
         if 'at_acl' in g3p_cnf:  # pragma: no cover
             self.at_acl = g3p_cnf['at_acl']
 
-        self.node_id = 'G3P'  # will be overwritten in __set_serial_no
-        self.mb_timer = Timer(self.mb_timout_cb, self.node_id)
-        self.mb_timeout = self.MB_REGULAR_TIMEOUT
-        self.mb_first_timeout = self.MB_START_TIMEOUT
-        '''timer value for next Modbus polling request'''
-        self.modbus_polling = False
-        self.sensor_list = 0x0000
+        self.sensor_list = 0
 
     '''
     Our puplic methods
     '''
     def close(self) -> None:
         logging.debug('Solarman.close()')
-        if self.server_side:
-            # set inverter state to offline, if output power is very low
-            logging.debug('close power: '
-                          f'{self.db.get_db_value(Register.OUTPUT_POWER, -1)}')
-            if self.db.get_db_value(Register.OUTPUT_POWER, 999) < 2:
-                self.db.set_db_def_value(Register.INVERTER_STATUS, 0)
-                self.new_data['env'] = True
-
         # we have references to methods of this class in self.switch
         # so we have to erase self.switch, otherwise this instance can't be
         # deallocated by the garbage collector ==> we get a memory leak
         self.switch.clear()
         self.log_lvl.clear()
-        self.state = State.closed
-        self.mb_timer.close()
         super().close()
 
     async def send_start_cmd(self, snr: int, host: str,
+                             forward: bool,
                              start_timeout=MB_CLIENT_DATA_UP):
         self.no_forwarding = True
+        self.establish_inv_emu = forward
         self.snr = snr
-        self.__set_serial_no(snr)
+        self._set_serial_no(snr)
         self.mb_timeout = start_timeout
         self.db.set_db_def_value(Register.IP_ADDRESS, host)
         self.db.set_db_def_value(Register.POLLING_INTERVAL,
                                  self.mb_timeout)
+        self.db.set_db_def_value(Register.DATA_UP_INTERVAL,
+                                 300)
+        self.db.set_db_def_value(Register.COLLECT_INTERVAL,
+                                 1)
         self.db.set_db_def_value(Register.HEARTBEAT_INTERVAL,
                                  120)
+        self.db.set_db_def_value(Register.SENSOR_LIST,
+                                 Fmt.hex4((self.sensor_list, )))
         self.new_data['controller'] = True
 
         self.state = State.up
@@ -187,14 +367,25 @@ class SolarmanV5(Message):
                 self.db.set_db_def_value(Register.POLLING_INTERVAL,
                                          self.mb_timeout)
 
+    def establish_emu(self):
+        _len = 223
+        build_msg = self.db.build(_len, 0x41, 2)
+        struct.pack_into(
+            '<BHHHLBL', build_msg, 0, 0xA5, _len-11, 0x4110,
+            0, self.snr, 2, self._emu_timestamp())
+        self.ifc.fwd_add(build_msg)
+        self.ifc.fwd_add(struct.pack('<BB', 0, 0x15))    # crc & stop
+
     def __set_config_parms(self, inv: dict):
         '''init connection with params from the configuration'''
         self.node_id = inv['node_id']
         self.sug_area = inv['suggested_area']
         self.modbus_polling = inv['modbus_polling']
         self.sensor_list = inv['sensor_list']
+        if self.mb:
+            self.mb.set_node_id(self.node_id)
 
-    def __set_serial_no(self, snr: int):
+    def _set_serial_no(self, snr: int):
         '''check the serial number and configure the inverter connection'''
         serial_no = str(snr)
         if self.unique_id == serial_no:
@@ -203,13 +394,16 @@ class SolarmanV5(Message):
             inverters = Config.get('inverters')
             # logger.debug(f'Inverters: {inverters}')
 
-            for inv in inverters.values():
+            for key, inv in inverters.items():
                 # logger.debug(f'key: {key} -> {inv}')
                 if (type(inv) is dict and 'monitor_sn' in inv
                    and inv['monitor_sn'] == snr):
                     self.__set_config_parms(inv)
                     self.db.set_pv_module_details(inv)
                     logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}')  # noqa: E501
+
+                    self.db.set_db_def_value(Register.COLLECTOR_SNR, snr)
+                    self.db.set_db_def_value(Register.SERIAL_NUMBER, key)
                     break
             else:
                 self.node_id = ''
@@ -223,210 +417,45 @@ class SolarmanV5(Message):
 
             self.unique_id = serial_no
 
-    def read(self) -> float:
-        '''process all received messages in the _recv_buffer'''
-        self._read()
-        while True:
-            if not self.header_valid:
-                self.__parse_header(self._recv_buffer, len(self._recv_buffer))
-
-            if self.header_valid and len(self._recv_buffer) >= \
-               (self.header_len + self.data_len+2):
-                self.__process_complete_received_msg()
-                self.__flush_recv_msg()
-            else:
-                return 0  # wait 0s before sending a response
-
-    def __process_complete_received_msg(self):
-        log_lvl = self.log_lvl.get(self.control, logging.WARNING)
-        if callable(log_lvl):
-            log_lvl = log_lvl()
-        hex_dump_memory(log_lvl, f'Received from {self.addr}:',
-                        self._recv_buffer, self.header_len +
-                        self.data_len+2)
-        if self.__trailer_is_ok(self._recv_buffer, self.header_len
-                                + self.data_len + 2):
-            if self.state == State.init:
-                self.state = State.received
-            self.__set_serial_no(self.snr)
-            self.__dispatch_msg()
-
     def forward(self, buffer, buflen) -> None:
         '''add the actual receive msg to the forwarding queue'''
         if self.no_forwarding:
             return
         tsun = Config.get('solarman')
         if tsun['enabled']:
-            self._forward_buffer += buffer[:buflen]
-            hex_dump_memory(logging.DEBUG, 'Store for forwarding:',
-                            buffer, buflen)
+            self.ifc.fwd_add(buffer[:buflen])
+            self.ifc.fwd_log(logging.DEBUG, 'Store for forwarding:')
 
-            fnc = self.switch.get(self.control, self.msg_unknown)
-            logger.info(self.__flow_str(self.server_side, 'forwrd') +
+            _, _str = self.get_fnc_handler(self.control)
+            logger.info(self._flow_str(self.server_side, 'forwrd') +
                         f' Ctl: {int(self.control):#04x}'
-                        f' Msg: {fnc.__name__!r}')
+                        f' Msg: {_str}')
 
     def _init_new_client_conn(self) -> bool:
         return False
 
-    '''
-    Our private methods
-    '''
-    def __flow_str(self, server_side: bool, type: str):  # noqa: F821
-        switch = {
-            'rx':      '  <',
-            'tx':      '  >',
-            'forwrd':  '<< ',
-            'drop':    ' xx',
-            'rxS':     '>  ',
-            'txS':     '<  ',
-            'forwrdS': ' >>',
-            'dropS':   'xx ',
-        }
-        if server_side:
-            type += 'S'
-        return switch.get(type, '???')
-
-    def _timestamp(self):
-        # utc as epoche
-        return int(time.time())    # pragma: no cover
-
     def _heartbeat(self) -> int:
         return 60                  # pragma: no cover
 
-    def __parse_header(self, buf: bytes, buf_len: int) -> None:
-
-        if (buf_len < self.header_len):  # enough bytes for complete header?
-            return
-
-        result = struct.unpack_from('<BHHHL', buf, 0)
-
-        # store parsed header values in the class
-        start = result[0]            # start byte
-        self.data_len = result[1]    # len of variable id string
-        self.control = result[2]
-        self.seq.set_recv(result[3])
-        self.snr = result[4]
-
-        if start != 0xA5:
-            hex_dump_memory(logging.ERROR,
-                            'Drop packet w invalid start byte from'
-                            f' {self.addr}:', buf, buf_len)
-
-            self.inc_counter('Invalid_Msg_Format')
-            # erase broken recv buffer
-            self._recv_buffer = bytearray()
-            return
-        self.header_valid = True
-
-    def __trailer_is_ok(self, buf: bytes, buf_len: int) -> bool:
-        crc = buf[self.data_len+11]
-        stop = buf[self.data_len+12]
-        if stop != 0x15:
-            hex_dump_memory(logging.ERROR,
-                            'Drop packet w invalid stop byte from '
-                            f'{self.addr}:', buf, buf_len)
-            self.inc_counter('Invalid_Msg_Format')
-            if len(self._recv_buffer) > (self.data_len+13):
-                next_start = buf[self.data_len+13]
-                if next_start != 0xa5:
-                    # erase broken recv buffer
-                    self._recv_buffer = bytearray()
-
-            return False
-
-        check = sum(buf[1:buf_len-2]) & 0xff
-        if check != crc:
-            self.inc_counter('Invalid_Msg_Format')
-            logger.debug(f'CRC {int(crc):#02x} {int(check):#08x}'
-                         f' Stop:{int(stop):#02x}')
-            # start & stop byte are valid, discard only this message
-            return False
-
-        return True
-
-    def __build_header(self, ctrl) -> None:
-        '''build header for new transmit message'''
-        self.send_msg_ofs = len(self._send_buffer)
-
-        self._send_buffer += struct.pack(
-            '<BHHHL', 0xA5, 0, ctrl, self.seq.get_send(), self.snr)
-        fnc = self.switch.get(ctrl, self.msg_unknown)
-        logger.info(self.__flow_str(self.server_side, 'tx') +
-                    f' Ctl: {int(ctrl):#04x} Msg: {fnc.__name__!r}')
-
-    def __finish_send_msg(self) -> None:
-        '''finish the transmit message, set lenght and checksum'''
-        _len = len(self._send_buffer) - self.send_msg_ofs
-        struct.pack_into('<H', self._send_buffer, self.send_msg_ofs+1, _len-11)
-        check = sum(self._send_buffer[self.send_msg_ofs+1:self.send_msg_ofs +
-                                      _len]) & 0xff
-        self._send_buffer += struct.pack('<BB', check, 0x15)    # crc & stop
-
-    def _update_header(self, _forward_buffer):
-        '''update header for message before forwarding,
-        set sequence and checksum'''
-        _len = len(_forward_buffer)
-        ofs = 0
-        while ofs < _len:
-            result = struct.unpack_from('<BH', _forward_buffer, ofs)
-            data_len = result[1]    # len of variable id string
-
-            struct.pack_into('<H', _forward_buffer, ofs+5,
-                             self.seq.get_send())
-
-            check = sum(_forward_buffer[ofs+1:ofs+data_len+11]) & 0xff
-            struct.pack_into('<B', _forward_buffer, ofs+data_len+11, check)
-            ofs += (13 + data_len)
-
-    def __dispatch_msg(self) -> None:
-        fnc = self.switch.get(self.control, self.msg_unknown)
-        if self.unique_id:
-            logger.info(self.__flow_str(self.server_side, 'rx') +
-                        f' Ctl: {int(self.control):#04x}' +
-                        f' Msg: {fnc.__name__!r}')
-            fnc()
-        else:
-            logger.info(self.__flow_str(self.server_side, 'drop') +
-                        f' Ctl: {int(self.control):#04x}' +
-                        f' Msg: {fnc.__name__!r}')
-
-    def __flush_recv_msg(self) -> None:
-        self._recv_buffer = self._recv_buffer[(self.header_len +
-                                               self.data_len+2):]
-        self.header_valid = False
-
     def __send_ack_rsp(self, msgtype, ftype, ack=1):
-        self.__build_header(msgtype)
-        self._send_buffer += struct.pack('<BBLL', ftype, ack,
-                                         self._timestamp(),
-                                         self._heartbeat())
-        self.__finish_send_msg()
+        self._build_header(msgtype)
+        self.ifc.tx_add(struct.pack('<BBLL', ftype, ack,
+                                    self._timestamp(),
+                                    self._heartbeat()))
+        self._finish_send_msg()
 
     def send_modbus_cb(self, pdu: bytearray, log_lvl: int, state: str):
         if self.state != State.up:
             logger.warning(f'[{self.node_id}] ignore MODBUS cmd,'
                            ' cause the state is not UP anymore')
             return
-        self.__build_header(0x4510)
-        self._send_buffer += struct.pack('<BHLLL', self.MB_RTU_CMD,
-                                         self.sensor_list, 0, 0, 0)
-        self._send_buffer += pdu
-        self.__finish_send_msg()
-        hex_dump_memory(log_lvl, f'Send Modbus {state}:{self.addr}:',
-                        self._send_buffer, len(self._send_buffer))
-        self.writer.write(self._send_buffer)
-        self._send_buffer = bytearray(0)  # self._send_buffer[sent:]
-
-    def _send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
-        if self.state != State.up:
-            logger.log(log_lvl, f'[{self.node_id}] ignore MODBUS cmd,'
-                       ' as the state is not UP')
-            return
-        self.mb.build_msg(Modbus.INV_ADDR, func, addr, val, log_lvl)
-
-    async def send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
-        self._send_modbus_cmd(func, addr, val, log_lvl)
+        self._build_header(0x4510)
+        self.ifc.tx_add(struct.pack('<BHLLL', self.MB_RTU_CMD,
+                                    self.sensor_list, 0, 0, 0))
+        self.ifc.tx_add(pdu)
+        self._finish_send_msg()
+        self.ifc.tx_log(log_lvl, f'Send Modbus {state}:{self.addr}:')
+        self.ifc.tx_flush()
 
     def mb_timout_cb(self, exp_cnt):
         self.mb_timer.start(self.mb_timeout)
@@ -457,18 +486,19 @@ class SolarmanV5(Message):
             return
 
         self.forward_at_cmd_resp = False
-        self.__build_header(0x4510)
-        self._send_buffer += struct.pack(f'<BHLLL{len(at_cmd)}sc', self.AT_CMD,
-                                         0x0002, 0, 0, 0,
-                                         at_cmd.encode('utf-8'), b'\r')
-        self.__finish_send_msg()
+        self._build_header(0x4510)
+        self.ifc.tx_add(struct.pack(f'<BHLLL{len(at_cmd)}sc', self.AT_CMD,
+                                    0x0002, 0, 0, 0,
+                                    at_cmd.encode('utf-8'), b'\r'))
+        self._finish_send_msg()
+        self.ifc.tx_log(logging.INFO, 'Send AT Command:')
         try:
-            await self.async_write('Send AT Command:')
+            self.ifc.tx_flush()
         except Exception:
-            self._send_buffer = bytearray(0)
+            self.ifc.tx_clear()
 
     def __forward_msg(self):
-        self.forward(self._recv_buffer, self.header_len+self.data_len+2)
+        self.forward(self.ifc.rx_peek(), self.header_len+self.data_len+2)
 
     def __build_model_name(self):
         db = self.db
@@ -489,7 +519,7 @@ class SolarmanV5(Message):
     def __process_data(self, ftype, ts):
         inv_update = False
         msg_type = self.control >> 8
-        for key, update in self.db.parse(self._recv_buffer, msg_type, ftype,
+        for key, update in self.db.parse(self.ifc.rx_peek(), msg_type, ftype,
                                          self.node_id):
             if update:
                 if key == 'inverter':
@@ -508,7 +538,7 @@ class SolarmanV5(Message):
         self.__forward_msg()
 
     def msg_dev_ind(self):
-        data = self._recv_buffer[self.header_len:]
+        data = self.ifc.rx_peek()[self.header_len:]
         result = struct.unpack_from(self.HDR_FMT, data, 0)
         ftype = result[0]  # always 2
         total = result[1]
@@ -529,7 +559,7 @@ class SolarmanV5(Message):
         self.__send_ack_rsp(0x1110, ftype)
 
     def msg_data_ind(self):
-        data = self._recv_buffer
+        data = self.ifc.rx_peek()
         result = struct.unpack_from('<BHLLLHL', data, self.header_len)
         ftype = result[0]  # 1 or 0x81
         sensor = result[1]
@@ -557,7 +587,7 @@ class SolarmanV5(Message):
         self.new_state_up()
 
     def msg_sync_start(self):
-        data = self._recv_buffer[self.header_len:]
+        data = self.ifc.rx_peek()[self.header_len:]
         result = struct.unpack_from(self.HDR_FMT, data, 0)
         ftype = result[0]
         total = result[1]
@@ -570,8 +600,8 @@ class SolarmanV5(Message):
         self.__send_ack_rsp(0x1310, ftype)
 
     def msg_command_req(self):
-        data = self._recv_buffer[self.header_len:
-                                 self.header_len+self.data_len]
+        data = self.ifc.rx_peek()[self.header_len:
+                                  self.header_len+self.data_len]
         result = struct.unpack_from('<B', data, 0)
         ftype = result[0]
         if ftype == self.AT_CMD:
@@ -583,9 +613,9 @@ class SolarmanV5(Message):
             self.forward_at_cmd_resp = True
 
         elif ftype == self.MB_RTU_CMD:
-            if self.remote_stream.mb.recv_req(data[15:],
-                                              self.remote_stream.
-                                              __forward_msg):
+            rstream = self.ifc.remote.stream
+            if rstream.mb.recv_req(data[15:],
+                                   rstream.__forward_msg):
                 self.inc_counter('Modbus_Command')
             else:
                 logger.error('Invalid Modbus Msg')
@@ -599,7 +629,7 @@ class SolarmanV5(Message):
             self.mqtt.publish(key, data))
 
     def get_cmd_rsp_log_lvl(self) -> int:
-        ftype = self._recv_buffer[self.header_len]
+        ftype = self.ifc.rx_peek()[self.header_len]
         if ftype == self.AT_CMD:
             if self.forward_at_cmd_resp:
                 return logging.INFO
@@ -611,8 +641,8 @@ class SolarmanV5(Message):
         return logging.WARNING
 
     def msg_command_rsp(self):
-        data = self._recv_buffer[self.header_len:
-                                 self.header_len+self.data_len]
+        data = self.ifc.rx_peek()[self.header_len:
+                                  self.header_len+self.data_len]
         ftype = data[0]
         if ftype == self.AT_CMD:
             if not self.forward_at_cmd_resp:
@@ -627,6 +657,18 @@ class SolarmanV5(Message):
             return
         self.__forward_msg()
 
+    def __parse_modbus_rsp(self, data):
+        inv_update = False
+        self.modbus_elms = 0
+        for key, update, _ in self.mb.recv_resp(self.db, data[14:]):
+            self.modbus_elms += 1
+            if update:
+                if key == 'inverter':
+                    inv_update = True
+                self._set_mqtt_timestamp(key, self._timestamp())
+                self.new_data[key] = True
+        return inv_update
+
     def __modbus_command_rsp(self, data):
         '''precess MODBUS RTU response'''
         valid = data[1]
@@ -634,21 +676,15 @@ class SolarmanV5(Message):
         # logger.debug(f'modbus_len:{modbus_msg_len} accepted:{valid}')
         if valid == 1 and modbus_msg_len > 4:
             # logger.info(f'first byte modbus:{data[14]}')
-            inv_update = False
-            self.modbus_elms = 0
-            for key, update, _ in self.mb.recv_resp(self.db, data[14:],
-                                                    self.node_id):
-                self.modbus_elms += 1
-                if update:
-                    if key == 'inverter':
-                        inv_update = True
-                    self._set_mqtt_timestamp(key, self._timestamp())
-                    self.new_data[key] = True
+            inv_update = self.__parse_modbus_rsp(data)
             if inv_update:
                 self.__build_model_name()
 
+            if self.establish_inv_emu and not self.ifc.remote.stream:
+                self.establish_emu()
+
     def msg_hbeat_ind(self):
-        data = self._recv_buffer[self.header_len:]
+        data = self.ifc.rx_peek()[self.header_len:]
         result = struct.unpack_from('<B', data, 0)
         ftype = result[0]
 
@@ -657,7 +693,7 @@ class SolarmanV5(Message):
         self.new_state_up()
 
     def msg_sync_end(self):
-        data = self._recv_buffer[self.header_len:]
+        data = self.ifc.rx_peek()[self.header_len:]
         result = struct.unpack_from(self.HDR_FMT, data, 0)
         ftype = result[0]
         total = result[1]
@@ -668,16 +704,3 @@ class SolarmanV5(Message):
 
         self.__forward_msg()
         self.__send_ack_rsp(0x1810, ftype)
-
-    def msg_response(self):
-        data = self._recv_buffer[self.header_len:]
-        result = struct.unpack_from('<BBLL', data, 0)
-        ftype = result[0]  # always 2
-        valid = result[1] == 1  # status
-        ts = result[2]
-        set_hb = result[3]  # always 60 or 120
-        logger.debug(f'ftype:{ftype} accepted:{valid}'
-                     f' ts:{ts:08x}  nextHeartbeat: {set_hb}s')
-
-        dt = datetime.fromtimestamp(ts)
-        logger.debug(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')

app/src/infos.py

@@ -1,5 +1,6 @@
 import logging
 import json
+import struct
 import os
 from enum import Enum
 from typing import Generator
@@ -16,6 +17,8 @@ class Register(Enum):
     CHIP_MODEL = 3
     TRACE_URL = 4
     LOGGER_URL = 5
+    MAC_ADDR = 6
+    COLLECTOR_SNR = 7
     PRODUCT_NAME = 20
     MANUFACTURER = 21
     VERSION = 22
@@ -23,7 +26,11 @@ class Register(Enum):
     EQUIPMENT_MODEL = 24
     NO_INPUTS = 25
     MAX_DESIGNED_POWER = 26
-    OUTPUT_COEFFICIENT = 27
+    RATED_LEVEL = 27
+    INPUT_COEFFICIENT = 28
+    GRID_VOLT_CAL_COEF = 29
+    OUTPUT_COEFFICIENT = 30
+    PROD_COMPL_TYPE = 31
     INVERTER_CNT = 50
     UNKNOWN_SNR = 51
     UNKNOWN_MSG = 52
@@ -36,10 +43,13 @@ class Register(Enum):
     AT_COMMAND = 59
     MODBUS_COMMAND = 60
     AT_COMMAND_BLOCKED = 61
+    CLOUD_CONN_CNT = 62
     OUTPUT_POWER = 83
     RATED_POWER = 84
     INVERTER_TEMP = 85
     INVERTER_STATUS = 86
+    DETECT_STATUS_1 = 87
+    DETECT_STATUS_2 = 88
     PV1_VOLTAGE = 100
     PV1_CURRENT = 101
     PV1_POWER = 102
@@ -82,6 +92,12 @@ class Register(Enum):
     PV5_TOTAL_GENERATION = 241
     PV6_DAILY_GENERATION = 250
     PV6_TOTAL_GENERATION = 251
+    INV_UNKNOWN_1 = 252
+    BOOT_STATUS = 253
+    DSP_STATUS = 254
+    WORK_MODE = 255
+    OUTPUT_SHUTDOWN = 256
+
     GRID_VOLTAGE = 300
     GRID_CURRENT = 301
     GRID_FREQUENCY = 302
@@ -97,22 +113,11 @@ class Register(Enum):
     IP_ADDRESS = 407
     POLLING_INTERVAL = 408
     SENSOR_LIST = 409
-    EVENT_401 = 500
-    EVENT_402 = 501
-    EVENT_403 = 502
-    EVENT_404 = 503
-    EVENT_405 = 504
-    EVENT_406 = 505
-    EVENT_407 = 506
-    EVENT_408 = 507
-    EVENT_409 = 508
-    EVENT_410 = 509
-    EVENT_411 = 510
-    EVENT_412 = 511
-    EVENT_413 = 512
-    EVENT_414 = 513
-    EVENT_415 = 514
-    EVENT_416 = 515
+    SSID = 410
+    EVENT_ALARM = 500
+    EVENT_FAULT = 501
+    EVENT_BF1 = 502
+    EVENT_BF2 = 503
     TS_INPUT = 600
     TS_GRID = 601
     TS_TOTAL = 602
@@ -121,6 +126,76 @@ class Register(Enum):
     TEST_REG2 = 10001
 
 
+class Fmt:
+    @staticmethod
+    def get_value(buf: bytes, idx: int, row: dict):
+        '''Get a value from buf and interpret as in row defined'''
+        fmt = row['fmt']
+        res = struct.unpack_from(fmt, buf, idx)
+        result = res[0]
+        if isinstance(result, (bytearray, bytes)):
+            result = result.decode().split('\x00')[0]
+        if 'func' in row:
+            result = row['func'](res)
+        if 'ratio' in row:
+            result = round(result * row['ratio'], 2)
+        if 'quotient' in row:
+            result = round(result/row['quotient'])
+        if 'offset' in row:
+            result = result + row['offset']
+        return result
+
+    @staticmethod
+    def hex4(val: tuple | str, reverse=False) -> str | int:
+        if not reverse:
+            return f'{val[0]:04x}'
+        else:
+            return int(val, 16)
+
+    @staticmethod
+    def mac(val: tuple | str, reverse=False) -> str | tuple:
+        if not reverse:
+            return "%02x:%02x:%02x:%02x:%02x:%02x" % val
+        else:
+            return (
+                int(val[0:2], 16), int(val[3:5], 16),
+                int(val[6:8], 16), int(val[9:11], 16),
+                int(val[12:14], 16), int(val[15:], 16))
+
+    @staticmethod
+    def version(val: tuple | str, reverse=False) -> str | int:
+        if not reverse:
+            x = val[0]
+            return f'V{(x >> 12)}.{(x >> 8) & 0xf}' \
+                f'.{(x >> 4) & 0xf}{x & 0xf:1X}'
+        else:
+            arr = val[1:].split('.')
+            return int(arr[0], 10) << 12 | \
+                int(arr[1], 10) << 8 | \
+                int(arr[2][:-1], 10) << 4 | \
+                int(arr[2][-1:], 16)
+
+    @staticmethod
+    def set_value(buf: bytearray, idx: int, row: dict, val):
+        '''Get a value from buf and interpret as in row defined'''
+        fmt = row['fmt']
+        if 'offset' in row:
+            val = val - row['offset']
+        if 'quotient' in row:
+            val = round(val * row['quotient'])
+        if 'ratio' in row:
+            val = round(val / row['ratio'])
+        if 'func' in row:
+            val = row['func'](val, reverse=True)
+        if isinstance(val, str):
+            val = bytes(val, 'UTF8')
+
+        if isinstance(val, tuple):
+            struct.pack_into(fmt, buf, idx, *val)
+        else:
+            struct.pack_into(fmt, buf, idx, val)
+
+
 class ClrAtMidnight:
     __clr_at_midnight = [Register.PV1_DAILY_GENERATION, Register.PV2_DAILY_GENERATION, Register.PV3_DAILY_GENERATION, Register.PV4_DAILY_GENERATION, Register.PV5_DAILY_GENERATION, Register.PV6_DAILY_GENERATION, Register.DAILY_GENERATION]   # noqa: E501
     db = {}
@@ -150,6 +225,8 @@ class ClrAtMidnight:
 
 
 class Infos:
+    __slots__ = ('db', 'tracer', )
+
     LIGHTNING = 'mdi:lightning-bolt'
     COUNTER = 'mdi:counter'
     GAUGE = 'mdi:gauge'
@@ -188,8 +265,8 @@ class Infos:
 
     __info_devs = {
         'proxy':      {'singleton': True,   'name': 'Proxy', 'mf': 'Stefan Allius'},  # noqa: E501
-        'controller': {'via': 'proxy',      'name': 'Controller',     'mdl': Register.CHIP_MODEL, 'mf': Register.CHIP_TYPE, 'sw': Register.COLLECTOR_FW_VERSION},  # noqa: E501
-        'inverter':   {'via': 'controller', 'name': 'Micro Inverter', 'mdl': Register.EQUIPMENT_MODEL, 'mf': Register.MANUFACTURER, 'sw': Register.VERSION},  # noqa: E501
+        'controller': {'via': 'proxy',      'name': 'Controller',     'mdl': Register.CHIP_MODEL, 'mf': Register.CHIP_TYPE, 'sw': Register.COLLECTOR_FW_VERSION, 'mac': Register.MAC_ADDR, 'sn': Register.COLLECTOR_SNR},  # noqa: E501
+        'inverter':   {'via': 'controller', 'name': 'Micro Inverter', 'mdl': Register.EQUIPMENT_MODEL, 'mf': Register.MANUFACTURER, 'sw': Register.VERSION, 'sn': Register.SERIAL_NUMBER},  # noqa: E501
         'input_pv1':  {'via': 'inverter',   'name': 'Module PV1', 'mdl': Register.PV1_MODEL, 'mf': Register.PV1_MANUFACTURER},  # noqa: E501
         'input_pv2':  {'via': 'inverter',   'name': 'Module PV2', 'mdl': Register.PV2_MODEL, 'mf': Register.PV2_MANUFACTURER, 'dep': {'reg': Register.NO_INPUTS, 'gte': 2}},  # noqa: E501
         'input_pv3':  {'via': 'inverter',   'name': 'Module PV3', 'mdl': Register.PV3_MODEL, 'mf': Register.PV3_MANUFACTURER, 'dep': {'reg': Register.NO_INPUTS, 'gte': 3}},  # noqa: E501
@@ -199,6 +276,7 @@ class Infos:
     }
 
     __comm_type_val_tpl = "{%set com_types = ['n/a','Wi-Fi', 'G4', 'G5', 'GPRS'] %}{{com_types[value_json['Communication_Type']|int(0)]|default(value_json['Communication_Type'])}}"    # noqa: E501
+    __work_mode_val_tpl = "{%set mode = ['Normal-Mode', 'Aging-Mode', 'ATE-Mode', 'Shielding GFDI', 'DTU-Mode'] %}{{mode[value_json['Work_Mode']|int(0)]|default(value_json['Work_Mode'])}}"    # noqa: E501
     __status_type_val_tpl = "{%set inv_status = ['Off-line', 'On-grid', 'Off-grid'] %}{{inv_status[value_json['Inverter_Status']|int(0)]|default(value_json['Inverter_Status'])}}"    # noqa: E501
     __rated_power_val_tpl = "{% if 'Rated_Power' in value_json and value_json['Rated_Power'] != None %}{{value_json['Rated_Power']|string() +' W'}}{% else %}{{ this.state }}{% endif %}"  # noqa: E501
     __designed_power_val_tpl = '''
@@ -213,6 +291,121 @@ class Infos:
   {{ this.state }}
 {% endif %}
 '''
+    __inv_alarm_val_tpl = '''
+{% if 'Inverter_Alarm' in value_json and
+      value_json['Inverter_Alarm'] != None %}
+  {% set val_int = value_json['Inverter_Alarm'] | int %}
+  {% if val_int == 0 %}
+    {% set result = 'noAlarm'%}
+  {%else%}
+    {% set result = '' %}
+    {% if val_int | bitwise_and(1)%}
+        {% set result = result + 'HBridgeFault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(2)%}
+        {% set result = result + 'DriVoltageFault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(3)%}
+        {% set result = result + 'GFDI-Fault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(4)%}
+        {% set result = result + 'OverTemp, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(5)%}
+        {% set result = result + 'CommLose, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(6)%}
+        {% set result = result + 'Bit6, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(7)%}
+        {% set result = result + 'Bit7, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(8)%}
+        {% set result = result + 'EEPROM-Fault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(9)%}
+        {% set result = result + 'NoUtility, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(10)%}
+        {% set result = result + 'VG_Offset, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(11)%}
+        {% set result = result + 'Relais_Open, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(12)%}
+        {% set result = result + 'Relais_Short, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(13)%}
+        {% set result = result + 'GridVoltOverRating, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(14)%}
+        {% set result = result + 'GridVoltUnderRating, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(15)%}
+        {% set result = result + 'GridFreqOverRating, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(16)%}
+        {% set result = result + 'GridFreqUnderRating, '%}
+    {% endif %}
+  {% endif %}
+  {{ result }}
+{% else %}
+  {{ this.state }}
+{% endif %}
+'''
+    __inv_fault_val_tpl = '''
+{% if 'Inverter_Fault' in value_json and
+      value_json['Inverter_Fault'] != None %}
+  {% set val_int = value_json['Inverter_Fault'] | int %}
+  {% if val_int == 0 %}
+    {% set result = 'noFault'%}
+  {%else%}
+    {% set result = '' %}
+    {% if val_int | bitwise_and(1)%}
+        {% set result = result + 'PVOV-Fault (PV OverVolt), '%}
+    {% endif %}
+    {% if val_int | bitwise_and(2)%}
+        {% set result = result + 'PVLV-Fault (PV LowVolt), '%}
+    {% endif %}
+    {% if val_int | bitwise_and(3)%}
+        {% set result = result + 'PV OI-Fault (PV OverCurrent), '%}
+    {% endif %}
+    {% if val_int | bitwise_and(4)%}
+        {% set result = result + 'PV OFV-Fault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(5)%}
+        {% set result = result + 'DC ShortCircuitFault, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(6)%}{% set result = result + 'Bit6, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(7)%}{% set result = result + 'Bit7, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(8)%}{% set result = result + 'Bit8, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(9)%}{% set result = result + 'Bit9, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(10)%}{% set result = result + 'Bit10, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(11)%}{% set result = result + 'Bit11, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(12)%}{% set result = result + 'Bit12, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(13)%}{% set result = result + 'Bit13, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(14)%}{% set result = result + 'Bit14, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(15)%}{% set result = result + 'Bit15, '%}
+    {% endif %}
+    {% if val_int | bitwise_and(16)%}{% set result = result + 'Bit16, '%}
+    {% endif %}
+  {% endif %}
+  {{ result }}
+{% else %}
+  {{ this.state }}
+{% endif %}
+'''
+
+    __input_coef_val_tpl = "{% if 'Output_Coefficient' in value_json and value_json['Input_Coefficient'] != None %}{{value_json['Input_Coefficient']|string() +' %'}}{% else %}{{ this.state }}{% endif %}"  # noqa: E501
     __output_coef_val_tpl = "{% if 'Output_Coefficient' in value_json and value_json['Output_Coefficient'] != None %}{{value_json['Output_Coefficient']|string() +' %'}}{% else %}{{ this.state }}{% endif %}"  # noqa: E501
 
     __info_defs = {
@@ -222,6 +415,9 @@ class Infos:
         Register.CHIP_MODEL: {'name': ['collector', 'Chip_Model'],       'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.TRACE_URL:  {'name': ['collector', 'Trace_URL'],        'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.LOGGER_URL: {'name': ['collector', 'Logger_URL'],       'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.MAC_ADDR:   {'name': ['collector', 'MAC-Addr'],         'singleton': False,  'level': logging.INFO,  'unit': ''},  # noqa: E501
+        Register.COLLECTOR_SNR: {'name': ['collector', 'Serial_Number'], 'singleton': False,  'level': logging.INFO,  'unit': ''},  # noqa: E501
+
 
         # inverter values used for device registration:
         Register.PRODUCT_NAME:    {'name': ['inverter', 'Product_Name'],           'level': logging.DEBUG, 'unit': ''},  # noqa: E501
@@ -232,6 +428,8 @@ class Infos:
         Register.NO_INPUTS:       {'name': ['inverter', 'No_Inputs'],              'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.MAX_DESIGNED_POWER: {'name': ['inverter',  'Max_Designed_Power'], 'level': logging.INFO,  'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'designed_power_', 'val_tpl': __designed_power_val_tpl, 'name': 'Max Designed Power', 'icon': LIGHTNING, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.RATED_POWER:        {'name': ['inverter',  'Rated_Power'],        'level': logging.DEBUG, 'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'rated_power_',    'val_tpl': __rated_power_val_tpl,    'name': 'Rated Power',        'icon': LIGHTNING, 'ent_cat': 'diagnostic'}},  # noqa: E501
+        Register.WORK_MODE:          {'name': ['inverter',  'Work_Mode'],          'level': logging.DEBUG, 'unit': '',     'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'work_mode_', 'name': 'Work Mode', 'val_tpl': __work_mode_val_tpl,  'icon': 'mdi:power', 'ent_cat': 'diagnostic'}},  # noqa: E501
+        Register.INPUT_COEFFICIENT:  {'name': ['inverter',  'Input_Coefficient'],  'level': logging.DEBUG, 'unit': '%',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'input_coef_',    'val_tpl': __input_coef_val_tpl,    'name': 'Input Coefficient', 'icon': LIGHTNING, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.OUTPUT_COEFFICIENT: {'name': ['inverter',  'Output_Coefficient'], 'level': logging.INFO,  'unit': '%',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'output_coef_',    'val_tpl': __output_coef_val_tpl,    'name': 'Output Coefficient', 'icon': LIGHTNING, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.PV1_MANUFACTURER: {'name': ['inverter', 'PV1_Manufacturer'],      'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.PV1_MODEL:        {'name': ['inverter', 'PV1_Model'],             'level': logging.DEBUG, 'unit': ''},  # noqa: E501
@@ -245,9 +443,11 @@ class Infos:
         Register.PV5_MODEL:        {'name': ['inverter', 'PV5_Model'],             'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.PV6_MANUFACTURER: {'name': ['inverter', 'PV6_Manufacturer'],      'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         Register.PV6_MODEL:        {'name': ['inverter', 'PV6_Model'],             'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-
+        Register.BOOT_STATUS:      {'name': ['inverter', 'BOOT_STATUS'],           'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.DSP_STATUS:       {'name': ['inverter', 'DSP_STATUS'],            'level': logging.DEBUG, 'unit': ''},  # noqa: E501
         # proxy:
         Register.INVERTER_CNT:       {'name': ['proxy', 'Inverter_Cnt'],       'singleton': True,   'ha': {'dev': 'proxy', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_count_',     'fmt': FMT_INT, 'name': 'Active Inverter Connections',    'icon': COUNTER}},  # noqa: E501
+        Register.CLOUD_CONN_CNT:     {'name': ['proxy', 'Cloud_Conn_Cnt'],     'singleton': True,   'ha': {'dev': 'proxy', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'cloud_conn_count_', 'fmt': FMT_INT, 'name': 'Active Cloud Connections',    'icon': COUNTER}},  # noqa: E501
         Register.UNKNOWN_SNR:        {'name': ['proxy', 'Unknown_SNR'],        'singleton': True,   'ha': {'dev': 'proxy', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'unknown_snr_',   'fmt': FMT_INT, 'name': 'Unknown Serial No',    'icon': COUNTER, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.UNKNOWN_MSG:        {'name': ['proxy', 'Unknown_Msg'],        'singleton': True,   'ha': {'dev': 'proxy', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'unknown_msg_',   'fmt': FMT_INT, 'name': 'Unknown Msg Type',     'icon': COUNTER, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.INVALID_DATA_TYPE:  {'name': ['proxy', 'Invalid_Data_Type'],  'singleton': True,   'ha': {'dev': 'proxy', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_data_type_', 'fmt': FMT_INT, 'name': 'Invalid Data Type',    'icon': COUNTER, 'ent_cat': 'diagnostic'}},  # noqa: E501
@@ -262,22 +462,12 @@ class Infos:
         # 0xffffff03:  {'name':['proxy', 'Voltage'],                        'level': logging.DEBUG, 'unit': 'V',    'ha':{'dev':'proxy', 'dev_cla': 'voltage',     'stat_cla': 'measurement', 'id':'proxy_volt_',  'fmt':FMT_FLOAT,'name': 'Grid Voltage'}},  # noqa: E501
 
         # events
-        Register.EVENT_401:  {'name': ['events', '401_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_402:  {'name': ['events', '402_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_403:  {'name': ['events', '403_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_404:  {'name': ['events', '404_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_405:  {'name': ['events', '405_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_406:  {'name': ['events', '406_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_407:  {'name': ['events', '407_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_408:  {'name': ['events', '408_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_409:  {'name': ['events', '409_No_Utility'],                'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_410:  {'name': ['events', '410_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_411:  {'name': ['events', '411_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_412:  {'name': ['events', '412_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_413:  {'name': ['events', '413_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_414:  {'name': ['events', '414_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_415:  {'name': ['events', '415_GridFreqOverRating'],        'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.EVENT_416:  {'name': ['events', '416_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.EVENT_ALARM:  {'name': ['events', 'Inverter_Alarm'],              'level': logging.INFO, 'unit': '', 'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_alarm_', 'name': 'Inverter Alarm', 'val_tpl': __inv_alarm_val_tpl, 'icon': 'mdi:alarm-light'}},  # noqa: E501
+        Register.EVENT_FAULT:  {'name': ['events', 'Inverter_Fault'],              'level': logging.INFO, 'unit': '', 'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_fault_', 'name': 'Inverter Fault', 'val_tpl': __inv_fault_val_tpl, 'icon': 'mdi:alarm-light'}},  # noqa: E501
+        Register.EVENT_BF1:    {'name': ['events', 'Inverter_Bitfield_1'],         'level': logging.INFO, 'unit': ''},  # noqa: E501
+        Register.EVENT_BF2:    {'name': ['events', 'Inverter_bitfield_2'],         'level': logging.INFO, 'unit': ''},  # noqa: E501
+        # Register.EVENT_409:  {'name': ['events', '409_No_Utility'],                'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        # Register.EVENT_415:  {'name': ['events', '415_GridFreqOverRating'],        'level': logging.DEBUG, 'unit': ''},  # noqa: E501
 
         # grid measures:
         Register.TS_GRID:         {'name': ['grid', 'Timestamp'],                  'level': logging.INFO,  'unit': ''},  # noqa: E501
@@ -287,6 +477,8 @@ class Infos:
         Register.OUTPUT_POWER:    {'name': ['grid', 'Output_Power'],               'level': logging.INFO,  'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': 'power',       'stat_cla': 'measurement', 'id': 'out_power_', 'fmt': FMT_FLOAT, 'name': 'Power'}},  # noqa: E501
         Register.INVERTER_TEMP:   {'name': ['env',  'Inverter_Temp'],              'level': logging.DEBUG, 'unit': '°C',   'ha': {'dev': 'inverter', 'dev_cla': 'temperature', 'stat_cla': 'measurement', 'id': 'temp_',       'fmt': FMT_INT, 'name': 'Temperature'}},  # noqa: E501
         Register.INVERTER_STATUS: {'name': ['env',  'Inverter_Status'],            'level': logging.INFO,  'unit': '',     'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_status_', 'name': 'Inverter Status', 'val_tpl': __status_type_val_tpl,          'icon': 'mdi:power'}},  # noqa: E501
+        Register.DETECT_STATUS_1: {'name': ['env',  'Detect_Status_1'],            'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.DETECT_STATUS_2: {'name': ['env',  'Detect_Status_2'],            'level': logging.DEBUG, 'unit': ''},  # noqa: E501
 
         # input measures:
         Register.TS_INPUT:     {'name': ['input', 'Timestamp'],                    'level': logging.INFO,  'unit': ''},  # noqa: E501
@@ -336,6 +528,14 @@ class Infos:
         Register.IP_ADDRESS:         {'name': ['controller', 'IP_Address'],         'level': logging.DEBUG, 'unit': '',     'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'ip_address_',           'fmt': '| string',        'name': 'IP Address', 'icon': WIFI, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.POLLING_INTERVAL:   {'name': ['controller', 'Polling_Interval'],   'level': logging.DEBUG, 'unit': 's',    'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'polling_intval_', 'fmt': FMT_STRING_SEC, 'name': 'Polling Interval', 'icon': UPDATE, 'ent_cat': 'diagnostic'}},  # noqa: E501
         Register.SENSOR_LIST:        {'name': ['controller', 'Sensor_List'],        'level': logging.INFO,  'unit': ''},  # noqa: E501
+        Register.SSID:               {'name': ['controller', 'WiFi_SSID'],          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+
+        Register.OUTPUT_SHUTDOWN:    {'name': ['other', 'Output_Shutdown'],         'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.RATED_LEVEL:        {'name': ['other', 'Rated_Level'],             'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.GRID_VOLT_CAL_COEF: {'name': ['other', 'Grid_Volt_Cal_Coef'],      'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.PROD_COMPL_TYPE:    {'name': ['other', 'Prod_Compliance_Type'],    'level': logging.INFO,  'unit': ''},  # noqa: E501
+        Register.INV_UNKNOWN_1:      {'name': ['inv_unknown', 'Unknown_1'],         'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+
     }
 
     @property
@@ -373,15 +573,19 @@ class Infos:
 
         return None                  # unknwon idx, not in info_defs
 
-    def inc_counter(self, counter: str) -> None:
+    @classmethod
+    def inc_counter(cls, counter: str) -> None:
         '''inc proxy statistic counter'''
-        db_dict = self.stat['proxy']
+        db_dict = cls.stat['proxy']
         db_dict[counter] += 1
+        cls.new_stat_data['proxy'] = True
 
-    def dec_counter(self, counter: str) -> None:
+    @classmethod
+    def dec_counter(cls, counter: str) -> None:
         '''dec proxy statistic counter'''
-        db_dict = self.stat['proxy']
+        db_dict = cls.stat['proxy']
         db_dict[counter] -= 1
+        cls.new_stat_data['proxy'] = True
 
     def ha_proxy_confs(self, ha_prfx: str, node_id: str, snr: str) \
             -> Generator[tuple[str, str, str, str], None, None]:
@@ -507,7 +711,7 @@ class Infos:
             dev['name'] = device['name']+' - '+sug_area
             dev['sa'] = device['name']+' - '+sug_area
         self.__add_via_dev(dev, device, key, snr)
-        for key in ('mdl', 'mf', 'sw', 'hw'):      # add optional
+        for key in ('mdl', 'mf', 'sw', 'hw', 'sn'):      # add optional
             # values fpr 'modell', 'manufacturer', 'sw version' and
             # 'hw version'
             if key in device:
@@ -518,8 +722,17 @@ class Infos:
             dev['ids'] = [f"{ha['dev']}"]
         else:
             dev['ids'] = [f"{ha['dev']}_{snr}"]
+        self.__add_connection(dev, device)
         return dev
 
+    def __add_connection(self, dev, device):
+        if 'mac' in device:
+            mac_str = self.dev_value(device['mac'])
+            if mac_str is not None:
+                if 12 == len(mac_str):
+                    mac_str = ':'.join(mac_str[i:i+2] for i in range(0, 12, 2))
+                dev['cns'] = [["mac", f"{mac_str}"]]
+
     def __add_via_dev(self, dev, device, key, snr):
         if 'via' in device:  # add the link to the parent device
             via = device['via']
@@ -632,6 +845,8 @@ class Infos:
 
     def get_db_value(self, id: Register, not_found_result: any = None):
         '''get database value'''
+        if id not in self.info_defs:
+            return not_found_result
         row = self.info_defs[id]
         if isinstance(row, dict):
             keys = row['name']

app/src/inverter_base.py

@@ -0,0 +1,193 @@
+import weakref
+import asyncio
+import logging
+import traceback
+import json
+import gc
+from aiomqtt import MqttCodeError
+from asyncio import StreamReader, StreamWriter
+from ipaddress import ip_address
+
+from inverter_ifc import InverterIfc
+from proxy import Proxy
+from async_stream import StreamPtr
+from async_stream import AsyncStreamClient
+from async_stream import AsyncStreamServer
+from cnf.config import Config
+from infos import Infos
+
+logger_mqtt = logging.getLogger('mqtt')
+
+
+class InverterBase(InverterIfc, Proxy):
+
+    def __init__(self, reader: StreamReader, writer: StreamWriter,
+                 config_id: str, prot_class,
+                 client_mode: bool = False,
+                 remote_prot_class=None):
+        Proxy.__init__(self)
+        self._registry.append(weakref.ref(self))
+        self.addr = writer.get_extra_info('peername')
+        self.config_id = config_id
+        if remote_prot_class:
+            self.prot_class = remote_prot_class
+        else:
+            self.prot_class = prot_class
+        self.__ha_restarts = -1
+        self.remote = StreamPtr(None)
+        ifc = AsyncStreamServer(reader, writer,
+                                self.async_publ_mqtt,
+                                self.create_remote,
+                                self.remote)
+
+        self.local = StreamPtr(
+            prot_class(self.addr, ifc, True, client_mode), ifc
+        )
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc, tb) -> None:
+        logging.debug(f'InverterBase.__exit__() {self.addr}')
+        self.__del_remote()
+
+        self.local.stream.close()
+        self.local.stream = None
+        self.local.ifc.close()
+        self.local.ifc = None
+
+        # now explicitly call garbage collector to release unreachable objects
+        unreachable_obj = gc.collect()
+        logging.debug(
+            f'InverterBase.__exit: freed unreachable obj: {unreachable_obj}')
+
+    def __del_remote(self):
+        if self.remote.stream:
+            self.remote.stream.close()
+            self.remote.stream = None
+
+        if self.remote.ifc:
+            self.remote.ifc.close()
+            self.remote.ifc = None
+
+    async def disc(self, shutdown_started=False) -> None:
+        if self.remote.stream:
+            self.remote.stream.shutdown_started = shutdown_started
+        if self.remote.ifc:
+            await self.remote.ifc.disc()
+        if self.local.stream:
+            self.local.stream.shutdown_started = shutdown_started
+        if self.local.ifc:
+            await self.local.ifc.disc()
+
+    def healthy(self) -> bool:
+        logging.debug('InverterBase healthy()')
+
+        if self.local.ifc and not self.local.ifc.healthy():
+            return False
+        if self.remote.ifc and not self.remote.ifc.healthy():
+            return False
+        return True
+
+    async def create_remote(self) -> None:
+        '''Establish a client connection to the TSUN cloud'''
+
+        tsun = Config.get(self.config_id)
+        host = tsun['host']
+        port = tsun['port']
+        addr = (host, port)
+        stream = self.local.stream
+
+        try:
+            logging.info(f'[{stream.node_id}] Connect to {addr}')
+            connect = asyncio.open_connection(host, port)
+            reader, writer = await connect
+            r_addr = writer.get_extra_info('peername')
+            if r_addr is not None:
+                (ip, _) = r_addr
+                if ip_address(ip).is_private:
+                    logging.error(
+                        f"""resolve {host} to {ip}, which is a private IP!
+\u001B[31m  Check your DNS settings and use a public DNS resolver!
+
+  To prevent a possible loop, forwarding to local IP addresses is
+  not supported and is deactivated for subsequent connections
+\u001B[0m
+""")
+                    Config.act_config[self.config_id]['enabled'] = False
+
+            ifc = AsyncStreamClient(
+                reader, writer, self.local, self.__del_remote)
+
+            self.remote.ifc = ifc
+            if hasattr(stream, 'id_str'):
+                self.remote.stream = self.prot_class(
+                    addr, ifc, server_side=False,
+                    client_mode=False, id_str=stream.id_str)
+            else:
+                self.remote.stream = self.prot_class(
+                    addr, ifc, server_side=False,
+                    client_mode=False)
+
+            logging.info(f'[{self.remote.stream.node_id}:'
+                         f'{self.remote.stream.conn_no}] '
+                         f'Connected to {addr}')
+            asyncio.create_task(self.remote.ifc.client_loop(addr))
+
+        except (ConnectionRefusedError, TimeoutError) as error:
+            logging.info(f'{error}')
+        except Exception:
+            Infos.inc_counter('SW_Exception')
+            logging.error(
+                f"Inverter: Exception for {addr}:\n"
+                f"{traceback.format_exc()}")
+
+    async def async_publ_mqtt(self) -> None:
+        '''publish data to MQTT broker'''
+        stream = self.local.stream
+        if not stream or not stream.unique_id:
+            return
+        # check if new inverter or collector infos are available or when the
+        #  home assistant has changed the status back to online
+        try:
+            if (('inverter' in stream.new_data and stream.new_data['inverter'])
+                    or ('collector' in stream.new_data and
+                        stream.new_data['collector'])
+                    or self.mqtt.ha_restarts != self.__ha_restarts):
+                await self._register_proxy_stat_home_assistant()
+                await self.__register_home_assistant(stream)
+                self.__ha_restarts = self.mqtt.ha_restarts
+
+            for key in stream.new_data:
+                await self.__async_publ_mqtt_packet(stream, key)
+            for key in Infos.new_stat_data:
+                await Proxy._async_publ_mqtt_proxy_stat(key)
+
+        except MqttCodeError as error:
+            logging.error(f'Mqtt except: {error}')
+        except Exception:
+            Infos.inc_counter('SW_Exception')
+            logging.error(
+                f"Inverter: Exception:\n"
+                f"{traceback.format_exc()}")
+
+    async def __async_publ_mqtt_packet(self, stream, key):
+        db = stream.db.db
+        if key in db and stream.new_data[key]:
+            data_json = json.dumps(db[key])
+            node_id = stream.node_id
+            logger_mqtt.debug(f'{key}: {data_json}')
+            await self.mqtt.publish(f'{self.entity_prfx}{node_id}{key}', data_json)  # noqa: E501
+            stream.new_data[key] = False
+
+    async def __register_home_assistant(self, stream) -> None:
+        '''register all our topics at home assistant'''
+        for data_json, component, node_id, id in stream.db.ha_confs(
+                self.entity_prfx, stream.node_id, stream.unique_id,
+                stream.sug_area):
+            logger_mqtt.debug(f"MQTT Register: cmp:'{component}'"
+                              f" node_id:'{node_id}' {data_json}")
+            await self.mqtt.publish(f"{self.discovery_prfx}{component}"
+                                    f"/{node_id}{id}/config", data_json)
+
+        stream.db.reg_clr_at_midnight(f'{self.entity_prfx}{stream.node_id}')

app/src/inverter_ifc.py

@@ -0,0 +1,37 @@
+from abc import abstractmethod
+import logging
+from asyncio import StreamReader, StreamWriter
+
+from iter_registry import AbstractIterMeta
+
+logger_mqtt = logging.getLogger('mqtt')
+
+
+class InverterIfc(metaclass=AbstractIterMeta):
+    _registry = []
+
+    @abstractmethod
+    def __init__(self, reader: StreamReader, writer: StreamWriter,
+                 config_id: str, prot_class,
+                 client_mode: bool):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def __enter__(self):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def __exit__(self, exc_type, exc, tb):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def healthy(self) -> bool:
+        pass  # pragma: no cover
+
+    @abstractmethod
+    async def disc(self, shutdown_started=False) -> None:
+        pass  # pragma: no cover
+
+    @abstractmethod
+    async def create_remote(self) -> None:
+        pass  # pragma: no cover

app/src/iter_registry.py

@@ -0,0 +1,9 @@
+from abc import ABCMeta
+
+
+class AbstractIterMeta(ABCMeta):
+    def __iter__(cls):
+        for ref in cls._registry:
+            obj = ref()
+            if obj is not None:
+                yield obj

app/src/logging.ini

@@ -58,13 +58,13 @@ formatter=console_formatter
 class=handlers.TimedRotatingFileHandler
 level=INFO
 formatter=file_formatter
-args=('log/proxy.log', when:='midnight')
+args=(handlers.log_path + 'proxy.log', when:='midnight', backupCount:=handlers.log_backups)
 
 [handler_file_handler_name2]
 class=handlers.TimedRotatingFileHandler
 level=NOTSET
 formatter=file_formatter
-args=('log/trace.log', when:='midnight')
+args=(handlers.log_path + 'trace.log', when:='midnight', backupCount:=handlers.log_backups)
 
 [formatter_console_formatter]
 format=%(asctime)s %(levelname)5s | %(name)4s | %(message)s'

app/src/messages.py

@@ -1,15 +1,13 @@
 import logging
 import weakref
-from typing import Callable, Generator
+from typing import Callable
 from enum import Enum
 
-
-if __name__ == "app.src.messages":
-    from app.src.infos import Infos, Register
-    from app.src.modbus import Modbus
-else:  # pragma: no cover
-    from infos import Infos, Register
-    from modbus import Modbus
+from async_ifc import AsyncIfc
+from protocol_ifc import ProtocolIfc
+from infos import Infos, Register
+from modbus import Modbus
+from my_timer import Timer
 
 logger = logging.getLogger('msg')
 
@@ -33,13 +31,9 @@ def __asc_val(n, data, data_len):
     return line
 
 
-def hex_dump_memory(level, info, data, data_len):
+def hex_dump(data, data_len) -> list:
     n = 0
     lines = []
-    lines.append(info)
-    tracer = logging.getLogger('tracer')
-    if not tracer.isEnabledFor(level):
-        return
 
     for i in range(0, data_len, 16):
         line = '  '
@@ -50,17 +44,26 @@ def hex_dump_memory(level, info, data, data_len):
         line += __asc_val(n, data, data_len)
         lines.append(line)
 
+    return lines
+
+
+def hex_dump_str(data, data_len):
+    lines = hex_dump(data, data_len)
+    return '\n'.join(lines)
+
+
+def hex_dump_memory(level, info, data, data_len):
+    lines = []
+    lines.append(info)
+    tracer = logging.getLogger('tracer')
+    if not tracer.isEnabledFor(level):
+        return
+
+    lines += hex_dump(data, data_len)
+
     tracer.log(level, '\n'.join(lines))
 
 
-class IterRegistry(type):
-    def __iter__(cls) -> Generator['Message', None, None]:
-        for ref in cls._registry:
-            obj = ref()
-            if obj is not None:
-                yield obj
-
-
 class State(Enum):
     '''state of the logical connection'''
     init = 0
@@ -75,31 +78,54 @@ class State(Enum):
     '''connection closed'''
 
 
-class Message(metaclass=IterRegistry):
-    _registry = []
+class Message(ProtocolIfc):
+    MAX_START_TIME = 400
+    '''maximum time without a received msg in sec'''
+    MAX_INV_IDLE_TIME = 120
+    '''maximum time without a received msg from the inverter in sec'''
+    MAX_DEF_IDLE_TIME = 360
+    '''maximum default time without a received msg in sec'''
+    MB_START_TIMEOUT = 40
+    '''start delay for Modbus polling in server mode'''
+    MB_REGULAR_TIMEOUT = 60
+    '''regular Modbus polling time in server mode'''
 
-    def __init__(self, server_side: bool, send_modbus_cb:
-                 Callable[[bytes, int, str], None], mb_timeout: int):
+    def __init__(self, node_id, ifc: "AsyncIfc", server_side: bool,
+                 send_modbus_cb: Callable[[bytes, int, str], None],
+                 mb_timeout: int):
         self._registry.append(weakref.ref(self))
 
         self.server_side = server_side
+        self.ifc = ifc
+        self.node_id = node_id
         if server_side:
             self.mb = Modbus(send_modbus_cb, mb_timeout)
+            self.mb_timer = Timer(self.mb_timout_cb, self.node_id)
         else:
             self.mb = None
-
+            self.mb_timer = None
         self.header_valid = False
         self.header_len = 0
         self.data_len = 0
         self.unique_id = 0
-        self.node_id = ''  # will be overwritten in the child class's __init__
         self.sug_area = ''
-        self._recv_buffer = bytearray(0)
-        self._send_buffer = bytearray(0)
-        self._forward_buffer = bytearray(0)
         self.new_data = {}
         self.state = State.init
         self.shutdown_started = False
+        self.modbus_elms = 0    # for unit tests
+        self.mb_timeout = self.MB_REGULAR_TIMEOUT
+        self.mb_first_timeout = self.MB_START_TIMEOUT
+        '''timer value for next Modbus polling request'''
+        self.modbus_polling = False
+
+    @property
+    def node_id(self):
+        return self._node_id
+
+    @node_id.setter
+    def node_id(self, value):
+        self._node_id = value
+        self.ifc.set_node_id(value)
 
     '''
     Empty methods, that have to be implemented in any child class which
@@ -109,10 +135,6 @@ class Message(metaclass=IterRegistry):
         # to our _recv_buffer
         return  # pragma: no cover
 
-    def _update_header(self, _forward_buffer):
-        '''callback for updating the header of the forward buffer'''
-        pass  # pragma: no cover
-
     def _set_mqtt_timestamp(self, key, ts: float | None):
         if key not in self.new_data or \
            not self.new_data[key]:
@@ -128,10 +150,45 @@ class Message(metaclass=IterRegistry):
             # logger.info(f'update: key: {key} ts:{tstr}'
             self.db.set_db_def_value(info_id, round(ts))
 
+    def _timeout(self) -> int:
+        if self.state == State.init or self.state == State.received:
+            to = self.MAX_START_TIME
+        elif self.state == State.up and \
+                self.server_side and self.modbus_polling:
+            to = self.MAX_INV_IDLE_TIME
+        else:
+            to = self.MAX_DEF_IDLE_TIME
+        return to
+
+    def _send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
+        if self.state != State.up:
+            logger.log(log_lvl, f'[{self.node_id}] ignore MODBUS cmd,'
+                       ' as the state is not UP')
+            return
+        self.mb.build_msg(Modbus.INV_ADDR, func, addr, val, log_lvl)
+
+    async def send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
+        self._send_modbus_cmd(func, addr, val, log_lvl)
+
     '''
     Our puplic methods
     '''
     def close(self) -> None:
+        if self.server_side:
+            # set inverter state to offline, if output power is very low
+            logging.debug('close power: '
+                          f'{self.db.get_db_value(Register.OUTPUT_POWER, -1)}')
+            if self.db.get_db_value(Register.OUTPUT_POWER, 999) < 2:
+                self.db.set_db_def_value(Register.INVERTER_STATUS, 0)
+                self.new_data['env'] = True
+            self.mb_timer.close()
+        self.state = State.closed
+        self.ifc.rx_set_cb(None)
+        self.ifc.prot_set_timeout_cb(None)
+        self.ifc.prot_set_init_new_client_conn_cb(None)
+        self.ifc.prot_set_update_header_cb(None)
+        self.ifc = None
+
         if self.mb:
             self.mb.close()
             self.mb = None

app/src/modbus.py

@@ -16,10 +16,7 @@ import logging
 import asyncio
 from typing import Generator, Callable
 
-if __name__ == "app.src.modbus":
-    from app.src.infos import Register
-else:  # pragma: no cover
-    from infos import Register
+from infos import Register, Fmt
 
 logger = logging.getLogger('data')
 
@@ -40,15 +37,30 @@ class Modbus():
 
     __crc_tab = []
     mb_reg_mapping = {
-        0x2007: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':  1},  # noqa: E501
+        0x2000: {'reg': Register.BOOT_STATUS,          'fmt': '!H'},                 # noqa: E501
+        0x2001: {'reg': Register.DSP_STATUS,           'fmt': '!H'},                 # noqa: E501
+        0x2003: {'reg': Register.WORK_MODE,            'fmt': '!H'},
+        0x2006: {'reg': Register.OUTPUT_SHUTDOWN,      'fmt': '!H'},
+        0x2007: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':  1},    # noqa: E501
+        0x2008: {'reg': Register.RATED_LEVEL,          'fmt': '!H'},
+        0x2009: {'reg': Register.INPUT_COEFFICIENT,    'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
+        0x200a: {'reg': Register.GRID_VOLT_CAL_COEF,   'fmt': '!H'},
+        0x2010: {'reg': Register.PROD_COMPL_TYPE,      'fmt': '!H'},
         0x202c: {'reg': Register.OUTPUT_COEFFICIENT,   'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
 
         0x3000: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
-        0x3008: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf:1X}'"},  # noqa: E501
+        0x3001: {'reg': Register.DETECT_STATUS_1,      'fmt': '!H'},                 # noqa: E501
+        0x3002: {'reg': Register.DETECT_STATUS_2,      'fmt': '!H'},                 # noqa: E501
+        0x3003: {'reg': Register.EVENT_ALARM,          'fmt': '!H'},                 # noqa: E501
+        0x3004: {'reg': Register.EVENT_FAULT,          'fmt': '!H'},                 # noqa: E501
+        0x3005: {'reg': Register.EVENT_BF1,            'fmt': '!H'},                 # noqa: E501
+        0x3006: {'reg': Register.EVENT_BF2,            'fmt': '!H'},                 # noqa: E501
+
+        0x3008: {'reg': Register.VERSION,              'fmt': '!H', 'func': Fmt.version},  # noqa: E501
         0x3009: {'reg': Register.GRID_VOLTAGE,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
         0x300a: {'reg': Register.GRID_CURRENT,         'fmt': '!H', 'ratio': 0.01},  # noqa: E501
         0x300b: {'reg': Register.GRID_FREQUENCY,       'fmt': '!H', 'ratio': 0.01},  # noqa: E501
-        0x300c: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'eval': 'result-40'},  # noqa: E501
+        0x300c: {'reg': Register.INVERTER_TEMP,        'fmt': '!H', 'offset': -40},  # noqa: E501
         # 0x300d
         0x300e: {'reg': Register.RATED_POWER,          'fmt': '!H', 'ratio':    1},  # noqa: E501
         0x300f: {'reg': Register.OUTPUT_POWER,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
@@ -74,6 +86,7 @@ class Modbus():
         0x3026: {'reg': Register.PV3_TOTAL_GENERATION, 'fmt': '!L', 'ratio': 0.01},  # noqa: E501
         0x3028: {'reg': Register.PV4_DAILY_GENERATION, 'fmt': '!H', 'ratio': 0.01},  # noqa: E501
         0x3029: {'reg': Register.PV4_TOTAL_GENERATION, 'fmt': '!L', 'ratio': 0.01},  # noqa: E501
+        # 0x302a
     }
 
     def __init__(self, snd_handler: Callable[[bytes, int, str], None],
@@ -117,9 +130,8 @@ class Modbus():
         while not self.que.empty():
             self.que.get_nowait()
 
-    def __del__(self):
-        """log statistics on the deleting of a MODBUS instance"""
-        logging.debug(f'Modbus __del__:\n {self.counter}')
+    def set_node_id(self, node_id: str):
+        self.node_id = node_id
 
     def build_msg(self, addr: int, func: int, reg: int, val: int,
                   log_lvl=logging.DEBUG) -> None:
@@ -164,14 +176,13 @@ class Modbus():
 
         return True
 
-    def recv_resp(self, info_db, buf: bytes, node_id: str) -> \
+    def recv_resp(self, info_db, buf: bytes) -> \
             Generator[tuple[str, bool, int | float | str], None, None]:
         """Generator which check and parse a received MODBUS response.
 
         Keyword arguments:
             info_db: database for info lockups
             buf: received Modbus RTU response frame
-            node_id: string for logging which identifies the slave
 
         Returns on error and set Self.err to:
             1: CRC error
@@ -181,7 +192,6 @@ class Modbus():
             5: No MODBUS request pending
         """
         # logging.info(f'recv_resp: first byte modbus:{buf[0]} len:{len(buf)}')
-        self.node_id = node_id
 
         fcode = buf[1]
         data_available = self.last_addr == self.INV_ADDR and \
@@ -232,17 +242,6 @@ class Modbus():
 
         return False
 
-    def __get_value(self, buf: bytes, idx: int, row: dict):
-        '''get a value from the received buffer'''
-        val = struct.unpack_from(row['fmt'], buf, idx)
-        result = val[0]
-
-        if 'eval' in row:
-            result = eval(row['eval'])
-        if 'ratio' in row:
-            result = round(result * row['ratio'], 2)
-        return result
-
     def __process_data(self, info_db, buf: bytes, first_reg, elmlen):
         '''Generator over received registers, updates the db'''
         for i in range(0, elmlen):
@@ -252,7 +251,7 @@ class Modbus():
                 info_id = row['reg']
                 keys, level, unit, must_incr = info_db._key_obj(info_id)
                 if keys:
-                    result = self.__get_value(buf, 3+2*i, row)
+                    result = Fmt.get_value(buf, 3+2*i, row)
                     name, update = info_db.update_db(keys, must_incr,
                                                      result)
                     yield keys[0], update, result

app/src/modbus_tcp.py

@@ -2,12 +2,9 @@ import logging
 import traceback
 import asyncio
 
-if __name__ == "app.src.modbus_tcp":
-    from app.src.config import Config
-    from app.src.gen3plus.inverter_g3p import InverterG3P
-else:  # pragma: no cover
-    from config import Config
-    from gen3plus.inverter_g3p import InverterG3P
+from cnf.config import Config
+from gen3plus.inverter_g3p import InverterG3P
+from infos import Infos
 
 logger = logging.getLogger('conn')
 
@@ -17,23 +14,26 @@ class ModbusConn():
         self.host = host
         self.port = port
         self.addr = (host, port)
-        self.stream = None
+        self.inverter = None
 
     async def __aenter__(self) -> 'InverterG3P':
         '''Establish a client connection to the TSUN cloud'''
         connection = asyncio.open_connection(self.host, self.port)
         reader, writer = await connection
-        self.stream = InverterG3P(reader, writer, self.addr,
-                                  client_mode=True)
-        logging.info(f'[{self.stream.node_id}:{self.stream.conn_no}] '
+        self.inverter = InverterG3P(reader, writer,
+                                    client_mode=True)
+        self.inverter.__enter__()
+        stream = self.inverter.local.stream
+        logging.info(f'[{stream.node_id}:{stream.conn_no}] '
                      f'Connected to {self.addr}')
-        self.stream.inc_counter('Inverter_Cnt')
-        await self.stream.publish_outstanding_mqtt()
-        return self.stream
+        Infos.inc_counter('Inverter_Cnt')
+        await self.inverter.local.ifc.publish_outstanding_mqtt()
+        return self.inverter
 
     async def __aexit__(self, exc_type, exc, tb):
-        self.stream.dec_counter('Inverter_Cnt')
-        await self.stream.publish_outstanding_mqtt()
+        Infos.dec_counter('Inverter_Cnt')
+        await self.inverter.local.ifc.publish_outstanding_mqtt()
+        self.inverter.__exit__(exc_type, exc, tb)
 
 
 class ModbusTcp():
@@ -49,29 +49,33 @@ class ModbusTcp():
                and 'monitor_sn' in inv
                and 'client_mode' in inv):
                 client = inv['client_mode']
-                # logging.info(f"SerialNo:{inv['monitor_sn']} host:{client['host']} port:{client['port']}")  # noqa: E501
+                logger.info(f"'client_mode' for snr: {inv['monitor_sn']} host: {client['host']}:{client['port']}, forward: {client['forward']}")  # noqa: E501
                 loop.create_task(self.modbus_loop(client['host'],
                                                   client['port'],
-                                                  inv['monitor_sn']))
+                                                  inv['monitor_sn'],
+                                                  client['forward']))
 
-    async def modbus_loop(self, host, port, snr: int) -> None:
+    async def modbus_loop(self, host, port,
+                          snr: int, forward: bool) -> None:
         '''Loop for receiving messages from the TSUN cloud (client-side)'''
         while True:
             try:
-                async with ModbusConn(host, port) as stream:
-                    await stream.send_start_cmd(snr, host)
-                    await stream.loop()
+                async with ModbusConn(host, port) as inverter:
+                    stream = inverter.local.stream
+                    await stream.send_start_cmd(snr, host, forward)
+                    await stream.ifc.loop()
                     logger.info(f'[{stream.node_id}:{stream.conn_no}] '
                                 f'Connection closed - Shutdown: '
                                 f'{stream.shutdown_started}')
                     if stream.shutdown_started:
                         return
+                del inverter  # decrease ref counter after the with block
 
             except (ConnectionRefusedError, TimeoutError) as error:
                 logging.debug(f'Inv-conn:{error}')
 
             except OSError as error:
-                if error.errno == 113:
+                if error.errno == 113:  # pragma: no cover
                     logging.debug(f'os-error:{error}')
                 else:
                     logging.info(f'os-error: {error}')

app/src/mqtt.py

@@ -2,16 +2,11 @@ import asyncio
 import logging
 import aiomqtt
 import traceback
-if __name__ == "app.src.mqtt":
-    from app.src.modbus import Modbus
-    from app.src.messages import Message
-    from app.src.config import Config
-    from app.src.singleton import Singleton
-else:  # pragma: no cover
-    from modbus import Modbus
-    from messages import Message
-    from config import Config
-    from singleton import Singleton
+
+from modbus import Modbus
+from messages import Message
+from cnf.config import Config
+from singleton import Singleton
 
 logger_mqtt = logging.getLogger('mqtt')
 
@@ -44,9 +39,6 @@ class Mqtt(metaclass=Singleton):
     def ha_restarts(self, value):
         self._ha_restarts = value
 
-    def __del__(self):
-        logger_mqtt.debug('MQTT: __del__')
-
     async def close(self) -> None:
         logger_mqtt.debug('MQTT: close')
         self.task.cancel()

app/src/protocol_ifc.py

@@ -0,0 +1,17 @@
+from abc import abstractmethod
+
+from async_ifc import AsyncIfc
+from iter_registry import AbstractIterMeta
+
+
+class ProtocolIfc(metaclass=AbstractIterMeta):
+    _registry = []
+
+    @abstractmethod
+    def __init__(self, addr, ifc: "AsyncIfc", server_side: bool,
+                 client_mode: bool = False, id_str=b''):
+        pass  # pragma: no cover
+
+    @abstractmethod
+    def close(self):
+        pass  # pragma: no cover

app/src/proxy.py

@@ -1,22 +1,40 @@
 import asyncio
 import logging
 import json
-if __name__ == "app.src.inverter":
-    from app.src.config import Config
-    from app.src.mqtt import Mqtt
-    from app.src.infos import Infos
-else:  # pragma: no cover
-    from config import Config
-    from mqtt import Mqtt
-    from infos import Infos
+
+from cnf.config import Config
+from mqtt import Mqtt
+from infos import Infos
 
 logger_mqtt = logging.getLogger('mqtt')
 
 
-class Inverter():
+class Proxy():
+    '''class Proxy is a baseclass
+
+    The class has some class method for managing common resources like a
+    connection to the MQTT broker or proxy error counter which are common
+    for all inverter connection
+
+    Instances of the class are connections to an inverter and can have an
+    optional link to an remote connection to the TSUN cloud. A remote
+    connection dies with the inverter connection.
+
+    class methods:
+        class_init():  initialize the common resources of the proxy (MQTT
+                       broker, Proxy DB, etc). Must be called before the
+                       first inverter instance can be created
+        class_close(): release the common resources of the proxy. Should not
+                       be called before any instances of the class are
+                       destroyed
+
+    methods:
+        create_remote(): Establish a client connection to the TSUN cloud
+        async_publ_mqtt(): Publish data to MQTT broker
+    '''
     @classmethod
     def class_init(cls) -> None:
-        logging.debug('Inverter.class_init')
+        logging.debug('Proxy.class_init')
         # initialize the proxy statistics
         Infos.static_init()
         cls.db_stat = Infos()
@@ -38,7 +56,7 @@ class Inverter():
         # reset at midnight when you restart the proxy just before
         # midnight!
         inverters = Config.get('inverters')
-        # logger.debug(f'Inverters: {inverters}')
+        # logger.debug(f'Proxys: {inverters}')
         for inv in inverters.values():
             if (type(inv) is dict):
                 node_id = inv['node_id']
@@ -77,7 +95,7 @@ class Inverter():
 
     @classmethod
     def class_close(cls, loop) -> None:   # pragma: no cover
-        logging.debug('Inverter.class_close')
+        logging.debug('Proxy.class_close')
         logging.info('Close MQTT Task')
         loop.run_until_complete(cls.mqtt.close())
         cls.mqtt = None

app/src/server.py

@@ -1,16 +1,21 @@
 import logging
 import asyncio
+import logging.handlers
 import signal
 import os
+import argparse
 from asyncio import StreamReader, StreamWriter
 from aiohttp import web
 from logging import config  # noqa F401
-from messages import Message
-from inverter import Inverter
+from proxy import Proxy
+from inverter_ifc import InverterIfc
 from gen3.inverter_g3 import InverterG3
 from gen3plus.inverter_g3p import InverterG3P
 from scheduler import Schedule
-from config import Config
+from cnf.config import Config
+from cnf.config_read_env import ConfigReadEnv
+from cnf.config_read_toml import ConfigReadToml
+from cnf.config_read_json import ConfigReadJson
 from modbus_tcp import ModbusTcp
 
 routes = web.RouteTableDef()
@@ -38,9 +43,9 @@ async def healthy(request):
 
     if proxy_is_up:
         # logging.info('web reqeust healthy()')
-        for stream in Message:
+        for inverter in InverterIfc:
             try:
-                res = stream.healthy()
+                res = inverter.healthy()
                 if not res:
                     return web.Response(status=503, text="I have a problem")
             except Exception as err:
@@ -70,21 +75,14 @@ async def webserver(addr, port):
         logging.debug('HTTP cleanup done')
 
 
-async def handle_client(reader: StreamReader, writer: StreamWriter):
+async def handle_client(reader: StreamReader, writer: StreamWriter, inv_class):
     '''Handles a new incoming connection and starts an async loop'''
 
-    addr = writer.get_extra_info('peername')
-    await InverterG3(reader, writer, addr).server_loop(addr)
+    with inv_class(reader, writer) as inv:
+        await inv.local.ifc.server_loop()
 
 
-async def handle_client_v2(reader: StreamReader, writer: StreamWriter):
-    '''Handles a new incoming connection and starts an async loop'''
-
-    addr = writer.get_extra_info('peername')
-    await InverterG3P(reader, writer, addr).server_loop(addr)
-
-
-async def handle_shutdown(web_task):
+async def handle_shutdown(loop, web_task):
     '''Close all TCP connections and stop the event loop'''
 
     logging.info('Shutdown due to SIGTERM')
@@ -94,25 +92,13 @@ async def handle_shutdown(web_task):
     #
     # first, disc all open TCP connections gracefully
     #
-    for stream in Message:
-        stream.shutdown_started = True
-        try:
-            await asyncio.wait_for(stream.disc(), 2)
-        except Exception:
-            pass
+    for inverter in InverterIfc:
+        await inverter.disc(True)
+
     logging.info('Proxy disconnecting done')
 
     #
-    # second, close all open TCP connections
-    #
-    for stream in Message:
-        stream.close()
-
-    await asyncio.sleep(0.1)  # give time for closing
-    logging.info('Proxy closing done')
-
-    #
-    # third, cancel the web server
+    # second, cancel the web server
     #
     web_task.cancel()
     await web_task
@@ -135,6 +121,8 @@ def get_log_level() -> int:
     '''checks if LOG_LVL is set in the environment and returns the
     corresponding logging.LOG_LEVEL'''
     log_level = os.getenv('LOG_LVL', 'INFO')
+    logging.info(f"LOG_LVL    : {log_level}")
+
     if log_level == 'DEBUG':
         log_level = logging.DEBUG
     elif log_level == 'WARN':
@@ -144,18 +132,46 @@ def get_log_level() -> int:
     return log_level
 
 
-if __name__ == "__main__":
+def main():   # pragma: no cover
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-c', '--config_path', type=str,
+                        default='./config/',
+                        help='set path for the configuration files')
+    parser.add_argument('-j', '--json_config', type=str,
+                        help='read user config from json-file')
+    parser.add_argument('-t', '--toml_config', type=str,
+                        help='read user config from toml-file')
+    parser.add_argument('-l', '--log_path', type=str,
+                        default='./log/',
+                        help='set path for the logging files')
+    parser.add_argument('-b', '--log_backups', type=int,
+                        default=0,
+                        help='set max number of daily log-files')
+    args = parser.parse_args()
     #
     # Setup our daily, rotating logger
     #
     serv_name = os.getenv('SERVICE_NAME', 'proxy')
     version = os.getenv('VERSION', 'unknown')
 
+    setattr(logging.handlers, "log_path", args.log_path)
+    setattr(logging.handlers, "log_backups", args.log_backups)
+
     logging.config.fileConfig('logging.ini')
     logging.info(f'Server "{serv_name} - {version}" will be started')
+    logging.info(f'current dir: {os.getcwd()}')
+    logging.info(f"config_path: {args.config_path}")
+    logging.info(f"json_config: {args.json_config}")
+    logging.info(f"toml_config: {args.toml_config}")
+    logging.info(f"log_path:    {args.log_path}")
+    if args.log_backups == 0:
+        logging.info("log_backups: unlimited")
+    else:
+        logging.info(f"log_backups: {args.log_backups} days")
+    log_level = get_log_level()
+    logging.info('******')
 
     # set lowest-severity for 'root', 'msg', 'conn' and 'data' logger
-    log_level = get_log_level()
     logging.getLogger().setLevel(log_level)
     logging.getLogger('msg').setLevel(log_level)
     logging.getLogger('conn').setLevel(log_level)
@@ -168,20 +184,34 @@ if __name__ == "__main__":
     asyncio.set_event_loop(loop)
 
     # read config file
-    ConfigErr = Config.class_init()
-    if ConfigErr is not None:
-        logging.info(f'ConfigErr: {ConfigErr}')
-    Inverter.class_init()
+    Config.init(ConfigReadToml("default_config.toml"))
+    ConfigReadEnv()
+    ConfigReadJson(args.config_path + "config.json")
+    ConfigReadToml(args.config_path + "config.toml")
+    ConfigReadJson(args.json_config)
+    ConfigReadToml(args.toml_config)
+    config_err = Config.get_error()
+
+    if config_err is not None:
+        logging.info(f'config_err: {config_err}')
+        return
+
+    logging.info('******')
+
+    Proxy.class_init()
     Schedule.start()
-    mb_tcp = ModbusTcp(loop)
+    ModbusTcp(loop)
 
     #
     # Create tasks for our listening servers. These must be tasks! If we call
     # start_server directly out of our main task, the eventloop will be blocked
     # and we can't receive and handle the UNIX signals!
     #
-    loop.create_task(asyncio.start_server(handle_client, '0.0.0.0', 5005))
-    loop.create_task(asyncio.start_server(handle_client_v2, '0.0.0.0', 10000))
+    for inv_class, port in [(InverterG3, 5005), (InverterG3P, 10000)]:
+        logging.info(f'listen on port: {port} for inverters')
+        loop.create_task(asyncio.start_server(lambda r, w, i=inv_class:
+                                              handle_client(r, w, i),
+                                              '0.0.0.0', port))
     web_task = loop.create_task(webserver('0.0.0.0', 8127))
 
     #
@@ -191,18 +221,22 @@ if __name__ == "__main__":
     for signame in ('SIGINT', 'SIGTERM'):
         loop.add_signal_handler(getattr(signal, signame),
                                 lambda loop=loop: asyncio.create_task(
-                                    handle_shutdown(web_task)))
+                                    handle_shutdown(loop, web_task)))
 
     loop.set_debug(log_level == logging.DEBUG)
     try:
-        if ConfigErr is None:
-            proxy_is_up = True
+        global proxy_is_up
+        proxy_is_up = True
         loop.run_forever()
     except KeyboardInterrupt:
         pass
     finally:
         logging.info("Event loop is stopped")
-        Inverter.class_close(loop)
+        Proxy.class_close(loop)
         logging.debug('Close event loop')
         loop.close()
         logging.info(f'Finally, exit Server "{serv_name}"')
+
+
+if __name__ == "__main__":  # pragma: no cover
+    main()

app/tests/test_async_stream.py

@@ -0,0 +1,573 @@
+# test_with_pytest.py
+import pytest
+import asyncio
+import gc
+import time
+
+from infos import Infos
+from inverter_base import InverterBase
+from async_stream import AsyncStreamServer, AsyncStreamClient, StreamPtr
+from messages import Message
+
+from test_modbus_tcp import FakeReader, FakeWriter
+from test_inverter_base import config_conn, patch_open_connection
+
+pytest_plugins = ('pytest_asyncio',)
+
+# initialize the proxy statistics
+Infos.static_init()
+
+class FakeProto(Message):
+    def __init__(self, ifc, server_side):
+        super().__init__('G3F', ifc, server_side, None, 10)
+        self.conn_no = 0
+
+    def mb_timout_cb(self, exp_cnt):
+        pass  # empty callback
+
+def fake_reader_fwd():
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_13_BYTES
+    reader.on_recv.set()
+    return reader
+
+def test_timeout_cb():
+    reader = FakeReader()
+    writer =  FakeWriter()
+    def timeout():
+        return 13
+    
+    ifc =  AsyncStreamClient(reader, writer, None, None)
+    assert 360 == ifc._AsyncStream__timeout()
+    ifc.prot_set_timeout_cb(timeout)
+    assert 13 == ifc._AsyncStream__timeout()
+    ifc.prot_set_timeout_cb(None)
+    assert 360 == ifc._AsyncStream__timeout()
+
+    # call healthy outside the contexter manager (__exit__() was called)
+    assert ifc.healthy()
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+def test_health():
+    reader = FakeReader()
+    writer =  FakeWriter()
+    
+    ifc =  AsyncStreamClient(reader, writer, None, None)
+    ifc.proc_start = time.time()
+    assert ifc.healthy()
+    ifc.proc_start = time.time() -10
+    assert not ifc.healthy()
+    ifc.proc_start = None
+    assert ifc.healthy()
+
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_close_cb():
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 0.1
+    def closed():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, closed)
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.client_loop('')
+    assert cnt == 1
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.client_loop('')
+    assert cnt == 1         # check that the closed method would not be called 
+    del ifc
+
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, None)
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.client_loop('')
+    assert cnt == 0
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_read():
+    global test
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_13_BYTES
+    reader.on_recv.set()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 1
+    def closed():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    def app_read():
+        nonlocal ifc
+        ifc.proc_start -= 3
+        return 0.01  # async wait of 0.01 
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, closed)
+    ifc.proc_max = 0
+    ifc.prot_set_timeout_cb(timeout)
+    ifc.rx_set_cb(app_read)
+    await ifc.client_loop('')
+    print('End loop')
+    assert ifc.proc_max >= 3
+    assert 13 == ifc.rx_len()
+    assert cnt == 1
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_write():
+    global test
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_13_BYTES
+    reader.on_recv.set()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 1
+    def closed():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    def app_read():
+        nonlocal ifc
+        ifc.proc_start -= 3
+        return 0.01  # async wait of 0.01 
+    
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, closed)
+    ifc.proc_max = 10
+    ifc.prot_set_timeout_cb(timeout)
+    ifc.rx_set_cb(app_read)
+    ifc.tx_add(b'test-data-resp')
+    assert 14 == ifc.tx_len()
+    await ifc.client_loop('')
+    print('End loop')
+    assert ifc.proc_max >= 3
+    assert 13 == ifc.rx_len()
+    assert 0 == ifc.tx_len()
+    assert cnt == 1
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_publ_mqtt_cb():
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_13_BYTES
+    reader.on_recv.set()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 0.1
+    async def publ_mqtt():
+        nonlocal cnt
+        nonlocal ifc
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(reader, writer, publ_mqtt, None, None)
+    assert ifc.async_publ_mqtt
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.server_loop()
+    assert cnt == 3     # 2 calls in server_loop() and 1 in loop()
+    assert ifc.async_publ_mqtt
+    ifc.close()  # clears the closed callback
+    assert not ifc.async_publ_mqtt
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_create_remote_cb():
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 0.1
+    async def create_remote():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(reader, writer, None, create_remote, None)
+    assert ifc.create_remote
+    await ifc.create_remote()
+    assert cnt == 1
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.server_loop()
+    assert not ifc.create_remote
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_sw_exception():
+    global test
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_SW_EXCEPT
+    reader.on_recv.set()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 1
+    def closed():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, closed)
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.client_loop('')
+    print('End loop')
+    assert cnt == 1
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_os_error():
+    global test
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    reader.test  = FakeReader.RD_TEST_OS_ERROR
+
+    reader.on_recv.set()
+    writer =  FakeWriter()
+    cnt = 0
+    def timeout():
+        return 1
+    def closed():
+        nonlocal cnt
+        nonlocal ifc
+        ifc.close()  # clears the closed callback
+        cnt += 1
+    cnt = 0
+    ifc =  AsyncStreamClient(reader, writer, None, closed)
+    ifc.prot_set_timeout_cb(timeout)
+    await ifc.client_loop('')
+    print('End loop')
+    assert cnt == 1
+    del ifc
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+class TestType():
+    FWD_NO_EXCPT = 1
+    FWD_SW_EXCPT = 2
+    FWD_TIMEOUT = 3
+    FWD_OS_ERROR = 4
+    FWD_OS_ERROR_NO_STREAM = 5
+    FWD_RUNTIME_ERROR = 6
+    FWD_RUNTIME_ERROR_NO_STREAM = 7
+
+def create_remote(remote, test_type, with_close_hdr:bool = False):
+    def update_hdr(buf):
+        return
+    def callback():
+        if test_type == TestType.FWD_SW_EXCPT:
+            remote.unknown_var += 1    
+        elif test_type == TestType.FWD_TIMEOUT:
+            raise TimeoutError
+        elif test_type == TestType.FWD_OS_ERROR:
+            raise ConnectionRefusedError
+        elif test_type == TestType.FWD_OS_ERROR_NO_STREAM:
+            remote.stream = None
+            raise ConnectionRefusedError
+        elif test_type == TestType.FWD_RUNTIME_ERROR:
+            raise RuntimeError("Peer closed")
+        elif test_type == TestType.FWD_RUNTIME_ERROR_NO_STREAM:
+            remote.stream = None
+            raise RuntimeError("Peer closed")
+        return True
+
+    def close():
+        return
+    if with_close_hdr:
+        close_hndl = close
+    else:
+        close_hndl = None
+    
+    remote.ifc = AsyncStreamClient(
+        FakeReader(), FakeWriter(), StreamPtr(None), close_hndl)
+    remote.ifc.prot_set_update_header_cb(update_hdr)
+    remote.ifc.prot_set_init_new_client_conn_cb(callback)
+    remote.stream = FakeProto(remote.ifc, False)
+
+@pytest.mark.asyncio
+async def test_forward():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote, ifc
+        create_remote(remote, TestType.FWD_NO_EXCPT)
+        ifc.fwd_add(b'test-forward_msg2 ')
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_with_conn():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote, ifc
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    create_remote(remote, TestType.FWD_NO_EXCPT)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 0
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_no_conn():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_sw_except():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_SW_EXCPT)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_os_error():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_OS_ERROR)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_os_error2():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_OS_ERROR, True)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_os_error3():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_OS_ERROR_NO_STREAM)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_runtime_error():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_RUNTIME_ERROR)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_runtime_error2():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_RUNTIME_ERROR, True)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_runtime_error3():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    async def _create_remote():
+        nonlocal cnt, remote
+        create_remote(remote, TestType.FWD_RUNTIME_ERROR_NO_STREAM, True)
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamServer(fake_reader_fwd(), FakeWriter(), None, _create_remote, remote)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.server_loop()
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_resp():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    def _close_cb():
+        nonlocal cnt, remote, ifc
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamClient(fake_reader_fwd(), FakeWriter(), remote, _close_cb)
+    create_remote(remote, TestType.FWD_NO_EXCPT)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.client_loop('')
+    assert cnt == 1
+    del ifc
+
+@pytest.mark.asyncio
+async def test_forward_resp2():
+    assert asyncio.get_running_loop()
+    remote = StreamPtr(None)
+    cnt = 0
+
+    def _close_cb():
+        nonlocal cnt, remote, ifc
+        cnt += 1
+    
+    cnt = 0
+    ifc =  AsyncStreamClient(fake_reader_fwd(), FakeWriter(), None, _close_cb)
+    create_remote(remote, TestType.FWD_NO_EXCPT)
+    ifc.fwd_add(b'test-forward_msg')
+    await ifc.client_loop('')
+    assert cnt == 1
+    del ifc

app/tests/test_byte_fifo.py

@@ -0,0 +1,43 @@
+# test_with_pytest.py
+
+from byte_fifo import ByteFifo
+
+def test_fifo():
+    read = ByteFifo()
+    assert 0 == len(read)
+    read += b'12'
+    assert 2 == len(read)
+    read += bytearray("34", encoding='UTF8')
+    assert 4 == len(read)
+    assert b'12' == read.peek(2)
+    assert 4 == len(read)
+    assert b'1234' == read.peek()
+    assert 4 == len(read)
+    assert b'12' == read.get(2)
+    assert 2 == len(read)
+    assert b'34' == read.get()
+    assert 0 == len(read)
+
+def test_fifo_fmt():
+    read = ByteFifo()
+    read += b'1234'
+    assert b'1234' == read.peek()
+    assert "  0000 | 31 32 33 34                                      | 1234" == f'{read}'
+
+def test_fifo_observer():
+    read = ByteFifo()
+
+    def _read():
+        assert b'1234' == read.get(4)
+
+    read += b'12'
+    assert 2 == len(read)
+    read()
+    read.reg_trigger(_read)
+    read += b'34'
+    assert 4 == len(read)
+    read()
+    assert 0 == len(read)
+    assert b'' == read.peek(2)
+    assert b'' == read.get(2)
+    assert 0 == len(read)

app/tests/test_config.py

@@ -1,16 +1,56 @@
 # test_with_pytest.py
-import tomllib
+import pytest
+import json
+from mock import patch
 from schema import SchemaMissingKeyError
-from app.src.config import Config
+from cnf.config import Config, ConfigIfc
+from cnf.config_read_toml import ConfigReadToml
 
-class TstConfig(Config):
+class FakeBuffer:
+    rd = str()
+
+test_buffer = FakeBuffer
+
+
+class FakeFile():
+    def __init__(self):
+        self.buf = test_buffer
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc, tb):
+        pass
+
+
+class FakeOptionsFile(FakeFile):
+    def __init__(self, OpenTextMode):
+        super().__init__()
+        self.bin_mode = 'b' in OpenTextMode
+
+    def read(self):
+        if self.bin_mode:
+            return bytearray(self.buf.rd.encode('utf-8')).copy()
+        else:
+            return self.buf.rd.copy()
+
+def patch_open():
+    def new_open(file: str, OpenTextMode="rb"):
+        if file == "_no__file__no_":
+            raise FileNotFoundError
+        return FakeOptionsFile(OpenTextMode)
+
+    with patch('builtins.open', new_open) as conn:
+        yield conn
+
+class TstConfig(ConfigIfc):
 
     @classmethod
-    def set(cls, cnf):
+    def __init__(cls, cnf):
         cls.act_config = cnf
 
     @classmethod
-    def _read_config_file(cls) -> dict:
+    def add_config(cls) -> dict:
         return cls.act_config
 
 
@@ -22,118 +62,332 @@ def test_empty_config():
     except SchemaMissingKeyError:
         pass
 
+@pytest.fixture
+def ConfigDefault():
+    return {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'},
+                   'inverters': {
+                       'allow_all': False,
+                       'R170000000000001': {
+                           'suggested_area': '', 
+                           'modbus_polling': False, 
+                           'monitor_sn': 0, 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'sensor_list': 688
+                       }, 
+                       'Y170000000000001': {
+                           'modbus_polling': True, 
+                           'monitor_sn': 2000000000, 
+                           'suggested_area': '', 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv3': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv4': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'sensor_list': 688
+                       }
+                    }
+                  }
+
+@pytest.fixture
+def ConfigComplete():
+    return {
+        'gen3plus': {
+            'at_acl': {
+                'mqtt': {'allow': ['AT+'], 'block': ['AT+SUPDATE']},
+                'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'],
+                         'block': ['AT+SUPDATE']}
+            }
+        },
+        'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com',
+                 'port': 5005},
+        'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com',
+                     'port': 10000},
+        'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None},
+        'ha': {'auto_conf_prefix': 'homeassistant',
+               'discovery_prefix': 'homeassistant',
+               'entity_prefix': 'tsun',
+               'proxy_node_id': 'proxy',
+               'proxy_unique_id': 'P170000000000001'},
+        'inverters': {
+            'allow_all': False,
+            'R170000000000001': {'node_id': 'PV-Garage/',
+                                 'modbus_polling': False,
+                                 'monitor_sn': 0,
+                                 'pv1': {'manufacturer': 'man1',
+                                         'type': 'type1'},
+                                 'pv2': {'manufacturer': 'man2',
+                                         'type': 'type2'},
+                                 'suggested_area': 'Garage',
+                                 'sensor_list': 688},
+            'Y170000000000001': {'modbus_polling': True,
+                                 'monitor_sn': 2000000000,
+                                 'node_id': 'PV-Garage2/',
+                                 'pv1': {'manufacturer': 'man1',
+                                         'type': 'type1'},
+                                 'pv2': {'manufacturer': 'man2',
+                                         'type': 'type2'},
+                                 'pv3': {'manufacturer': 'man3',
+                                         'type': 'type3'},
+                                 'pv4': {'manufacturer': 'man4',
+                                         'type': 'type4'},
+                                 'suggested_area': 'Garage2',
+                                 'sensor_list': 688}
+        }
+    }
+
 def test_default_config():
-    with open("app/config/default_config.toml", "rb") as f:
-        cnf = tomllib.load(f)
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    validated = Config.def_config
+    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'},
+                         'inverters': {
+                             'allow_all': False, 
+                             'R170000000000001': {
+                                 'node_id': '', 
+                                 'pv1': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-395M'},
+                                 'pv2': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-395M'},
+                                 'modbus_polling': False,
+                                 'monitor_sn': 0, 
+                                 'suggested_area': '', 
+                                 'sensor_list': 688}, 
+                             'Y170000000000001': {
+                                 'modbus_polling': True, 
+                                 'monitor_sn': 2000000000, 
+                                 'node_id': '',
+                                 'pv1': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-410M'},
+                                 'pv2': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-410M'},
+                                 'pv3': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-410M'},
+                                 'pv4': {'manufacturer': 'Risen',
+                                         'type': 'RSM40-8-410M'},
+                                 'suggested_area': '', 
+                                 'sensor_list': 688}}}
 
-    try:
-        validated = Config.conf_schema.validate(cnf)
-    except Exception:
-        assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': False, 'monitor_sn': 0, 'suggested_area': '', 'sensor_list': 688}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': '', 'sensor_list': 688}}}
-
-def test_full_config():
+def test_full_config(ConfigComplete):
     cnf = {'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 
-           'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []},
-                                   'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}},
+           'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': ['AT+SUPDATE']},
+                                   'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': ['AT+SUPDATE']}}},
            'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 
            'mqtt': {'host': 'mqtt', 'port': 1883, 'user': '', 'passwd': ''}, 
            'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 
-           'inverters': {'allow_all': True, 
-                         'R170000000000001': {'modbus_polling': True, 'node_id': '', 'sensor_list': 0, 'suggested_area': '', 'pv1': {'type': 'type1', 'manufacturer': 'man1'}, 'pv2': {'type': 'type2', 'manufacturer': 'man2'}, 'pv3': {'type': 'type3', 'manufacturer': 'man3'}}, 
-                         'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'sensor_list': 0x1511, 'suggested_area': ''}}}
+           'inverters': {'allow_all': False, 
+                         'R170000000000001': {'modbus_polling': False, 'node_id': 'PV-Garage/', 'sensor_list': 0x02B0, 'suggested_area': 'Garage', 'pv1': {'type': 'type1', 'manufacturer': 'man1'}, 'pv2': {'type': 'type2', 'manufacturer': 'man2'}}, 
+                         'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': 'PV-Garage2/', 'sensor_list': 0x02B0, 'suggested_area': 'Garage2', 'pv1': {'type': 'type1', 'manufacturer': 'man1'}, 'pv2': {'type': 'type2', 'manufacturer': 'man2'}, 'pv3': {'type': 'type3', 'manufacturer': 'man3'}, 'pv4': {'type': 'type4', 'manufacturer': 'man4'}}}}
     try:
         validated = Config.conf_schema.validate(cnf)
     except Exception:
         assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': True, 'monitor_sn': 0, 'pv1': {'manufacturer': 'man1','type': 'type1'},'pv2': {'manufacturer': 'man2','type': 'type2'},'pv3': {'manufacturer': 'man3','type': 'type3'}, 'suggested_area': '', 'sensor_list': 0}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': '', 'sensor_list': 5393}}}
+    assert validated == ConfigComplete
 
-def test_mininum_config():
-    cnf = {'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 
-           'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+']},
-                                   'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE']}}},
-           'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 
-           'mqtt': {'host': 'mqtt', 'port': 1883, 'user': '', 'passwd': ''}, 
-           'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 
-           'inverters': {'allow_all': True,
-                         'R170000000000001': {}}
-    } 
-
-    try:
-        validated = Config.conf_schema.validate(cnf)
-    except Exception:
-        assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': True, 'monitor_sn': 0, 'suggested_area': '', 'sensor_list': 688}}}
-
-def test_read_empty():
-    cnf = {}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
-    assert err == None
-    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': False, 'monitor_sn': 0, 'node_id': '', 'sensor_list': 688}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': '', 'sensor_list': 688}}}
+def test_read_empty(ConfigDefault):
+    test_buffer.rd = ""
     
-    defcnf = TstConfig.def_config.get('solarman') 
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == ConfigDefault
+    
+    defcnf = Config.def_config.get('solarman') 
     assert defcnf == {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}
-    assert True == TstConfig.is_default('solarman')
+    assert True == Config.is_default('solarman')
 
 def test_no_file():
-    cnf = {}
-    TstConfig.set(cnf)
-    err = TstConfig.read('')
+    Config.init(ConfigReadToml("default_config.toml"))
+    err = Config.get_error()
     assert err == "Config.read: [Errno 2] No such file or directory: 'default_config.toml'"
-    cnf = TstConfig.get()
+    cnf = Config.get()
     assert cnf == {}    
-    defcnf = TstConfig.def_config.get('solarman') 
+    defcnf = Config.def_config.get('solarman') 
     assert defcnf == None
 
-def test_read_cnf1():
-    cnf = {'solarman' : {'enabled': False}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
+def test_no_file2():
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    assert Config.err == None
+    ConfigReadToml("_no__file__no_")
+    err = Config.get_error()
     assert err == None
-    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': False, 'monitor_sn': 0, 'node_id': '', 'sensor_list': 688}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': '', 'sensor_list': 688}}}
-    cnf = TstConfig.get('solarman')
+
+def test_invalid_filename():
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    assert Config.err == None
+    ConfigReadToml(None)
+    err = Config.get_error()
+    assert err == None
+
+def test_read_cnf1():
+    test_buffer.rd = "solarman.enabled = false"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'},
+                   'inverters': {
+                       'allow_all': False,
+                       'R170000000000001': {
+                           'suggested_area': '', 
+                           'modbus_polling': False, 
+                           'monitor_sn': 0, 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'sensor_list': 688
+                       }, 
+                       'Y170000000000001': {
+                           'modbus_polling': True, 
+                           'monitor_sn': 2000000000, 
+                           'suggested_area': '', 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv3': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv4': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'sensor_list': 688
+                       }
+                    }
+                  }
+    cnf = Config.get('solarman')
     assert cnf == {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}    
-    defcnf = TstConfig.def_config.get('solarman') 
+    defcnf = Config.def_config.get('solarman') 
     assert defcnf == {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}
-    assert False == TstConfig.is_default('solarman')
+    assert False == Config.is_default('solarman')
                    
 def test_read_cnf2():
-    cnf = {'solarman' : {'enabled': 'FALSE'}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
-    assert err == None
-    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': False, 'monitor_sn': 0, 'node_id': '', 'sensor_list': 688}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': '', 'sensor_list': 688}}}
-    assert True == TstConfig.is_default('solarman')
+    test_buffer.rd = "solarman.enabled = 'FALSE'"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
 
-def test_read_cnf3():
-    cnf = {'solarman' : {'port': 'FALSE'}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
-    assert err == 'Config.read: Key \'solarman\' error:\nKey \'port\' error:\nint(\'FALSE\') raised ValueError("invalid literal for int() with base 10: \'FALSE\'")'
-    cnf = TstConfig.get()
-    assert cnf == {'solarman': {'port': 'FALSE'}}
+    assert err == None
+    cnf = Config.get()
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'},
+                   'inverters': {
+                       'allow_all': False,
+                       'R170000000000001': {
+                           'suggested_area': '', 
+                           'modbus_polling': False, 
+                           'monitor_sn': 0, 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'sensor_list': 688
+                       }, 
+                       'Y170000000000001': {
+                           'modbus_polling': True, 
+                           'monitor_sn': 2000000000, 
+                           'suggested_area': '', 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv3': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv4': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'sensor_list': 688
+                       }
+                    }
+                  }
+    assert True == Config.is_default('solarman')
+
+def test_read_cnf3(ConfigDefault):
+    test_buffer.rd = "solarman.port = 'FALSE'"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
+
+    assert err == 'error: Key \'solarman\' error:\nKey \'port\' error:\nint(\'FALSE\') raised ValueError("invalid literal for int() with base 10: \'FALSE\'")'
+    cnf = Config.get()
+    assert cnf == ConfigDefault
 
 def test_read_cnf4():
-    cnf = {'solarman' : {'port': 5000}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
+    test_buffer.rd = "solarman.port = 5000"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
+
     assert err == None
-    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 5000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': False, 'monitor_sn': 0, 'node_id': '', 'sensor_list': 688}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': '', 'sensor_list': 688}}}
-    assert False == TstConfig.is_default('solarman')
+    cnf = Config.get()
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 5000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'},
+                   'inverters': {
+                       'allow_all': False,
+                       'R170000000000001': {
+                           'suggested_area': '', 
+                           'modbus_polling': False, 
+                           'monitor_sn': 0, 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-395M'},
+                           'sensor_list': 688
+                       }, 
+                       'Y170000000000001': {
+                           'modbus_polling': True, 
+                           'monitor_sn': 2000000000, 
+                           'suggested_area': '', 
+                           'node_id': '', 
+                           'pv1': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv2': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv3': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'pv4': {'manufacturer': 'Risen',
+                                   'type': 'RSM40-8-410M'},
+                           'sensor_list': 688
+                       }
+                    }
+                  }
+    assert False == Config.is_default('solarman')
 
 def test_read_cnf5():
-    cnf = {'solarman' : {'port': 1023}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
+    test_buffer.rd = "solarman.port = 1023"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
     assert err != None
 
 def test_read_cnf6():
-    cnf = {'solarman' : {'port': 65536}}
-    TstConfig.set(cnf)
-    err = TstConfig.read('app/config/')
+    test_buffer.rd = "solarman.port = 65536"
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadToml("config/config.toml")
+        err = Config.get_error()
     assert err != None

app/tests/test_config_read_env.py

@@ -0,0 +1,53 @@
+# test_with_pytest.py
+import pytest
+import os
+from mock import patch
+from cnf.config import Config
+from cnf.config_read_toml import ConfigReadToml
+from cnf.config_read_env import ConfigReadEnv
+
+def patch_getenv():
+    def new_getenv(key: str, defval=None):
+        """Get an environment variable, return None if it doesn't exist.
+The optional second argument can specify an alternate default. key,
+default and the result are str."""
+        if key == 'MQTT_PASSWORD':
+            return 'passwd'
+        elif key == 'MQTT_PORT':
+            return 1234
+        elif key == 'MQTT_HOST':
+            return ""
+        return defval
+
+    with patch.object(os, 'getenv', new_getenv) as conn:
+        yield conn
+
+def test_extend_key():
+    cnf_rd = ConfigReadEnv()
+
+    conf = {}
+    cnf_rd._extend_key(conf, "mqtt.user", "testuser")
+    assert conf == {
+        'mqtt': {
+            'user': 'testuser',
+        },
+    }
+
+    conf = {}
+    cnf_rd._extend_key(conf, "mqtt", "testuser")
+    assert conf == {
+        'mqtt': 'testuser',
+    }
+
+    conf = {}
+    cnf_rd._extend_key(conf, "", "testuser")
+    assert conf == {'': 'testuser'}
+
+def test_read_env_config():
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    assert Config.get('mqtt') == {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}
+    for _ in patch_getenv():
+
+        ConfigReadEnv()
+    assert Config.get_error() == None
+    assert Config.get('mqtt') == {'host': 'mqtt', 'port': 1234, 'user': None, 'passwd': 'passwd'}

app/tests/test_config_read_json.py

@@ -0,0 +1,411 @@
+# test_with_pytest.py
+import pytest
+from mock import patch
+from cnf.config import Config
+from cnf.config_read_json import ConfigReadJson
+from cnf.config_read_toml import ConfigReadToml
+
+from test_config import ConfigDefault, ConfigComplete
+
+
+class CnfIfc(ConfigReadJson):
+    def __init__(self):
+        pass
+
+
+class FakeBuffer:
+    rd = str()
+    wr = str()
+
+
+test_buffer = FakeBuffer
+
+
+class FakeFile():
+    def __init__(self):
+        self.buf = test_buffer
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc, tb):
+        pass
+
+
+class FakeOptionsFile(FakeFile):
+    def __init__(self, OpenTextMode):
+        super().__init__()
+        self.bin_mode = 'b' in OpenTextMode
+
+    def read(self):
+        print(f"Fake.read: bmode:{self.bin_mode}")
+        if self.bin_mode:
+            return bytearray(self.buf.rd.encode('utf-8')).copy()
+        else:
+            print(f"Fake.read: str:{self.buf.rd}")
+            return self.buf.rd
+
+def patch_open():
+    def new_open(file: str, OpenTextMode="r"):
+        if file == "_no__file__no_":
+            raise FileNotFoundError
+        return FakeOptionsFile(OpenTextMode)
+
+    with patch('builtins.open', new_open) as conn:
+        yield conn
+
+@pytest.fixture
+def ConfigTomlEmpty():
+    return {
+        'mqtt': {'host': 'mqtt', 'port': 1883, 'user': '', 'passwd': ''},
+        'ha': {'auto_conf_prefix': 'homeassistant',
+               'discovery_prefix': 'homeassistant',
+               'entity_prefix': 'tsun',
+               'proxy_node_id': 'proxy',
+               'proxy_unique_id': 'P170000000000001'},
+        'solarman': {
+            'enabled': True,
+            'host': 'iot.talent-monitoring.com',
+            'port': 10000,
+        },
+        'tsun': {
+            'enabled': True,
+            'host': 'logger.talent-monitoring.com',
+            'port': 5005,
+        },
+        'inverters': {
+            'allow_all': False
+        },
+        'gen3plus': {'at_acl': {'tsun': {'allow': [], 'block': []},
+                                'mqtt': {'allow': [], 'block': []}}},
+    }
+
+
+def test_no_config(ConfigDefault):
+    test_buffer.rd = ""  # empty buffer, no json
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadJson()
+        err = Config.get_error()
+
+    assert err == 'error: Expecting value: line 1 column 1 (char 0)'
+    cnf = Config.get()
+    assert cnf == ConfigDefault
+
+def test_no_file(ConfigDefault):
+    test_buffer.rd = ""  # empty buffer, no json
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadJson("_no__file__no_")
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == ConfigDefault
+
+def test_invalid_filename(ConfigDefault):
+    test_buffer.rd = ""  # empty buffer, no json
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadJson(None)
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == ConfigDefault
+
+def test_cnv1():
+    """test dotted key converting"""
+    tst = {
+   "gen3plus.at_acl.mqtt.block": [
+      "AT+SUPDATE",
+      "AT+"
+   ]
+}
+
+    cnf = ConfigReadJson()
+    obj = cnf.convert_to_obj(tst)
+    assert obj == {
+        'gen3plus': {
+            'at_acl': {
+                'mqtt': {
+                    'block': [
+                        'AT+SUPDATE',
+                        "AT+"
+                    ],
+                },
+            },
+        },
+    }
+
+def test_cnv2():
+    """test a valid list with serials in inverters"""
+    tst = {
+   "inverters": [
+     {
+       "serial": "R170000000000001",
+     },
+     {
+       "serial": "Y170000000000001",
+     }
+   ],
+}
+
+    cnf = ConfigReadJson()
+    obj = cnf.convert_to_obj(tst)
+    assert obj == {
+        'inverters': {
+            'R170000000000001': {},
+            'Y170000000000001': {}
+        },
+    }
+
+def test_cnv3():
+    """test the combination of a list and a scalar in inverters"""
+    tst = {
+   "inverters": [
+     {
+       "serial": "R170000000000001",
+     },
+     {
+       "serial": "Y170000000000001",
+     }
+   ],
+   "inverters.allow_all": False,
+}
+
+    cnf = ConfigReadJson()
+    obj = cnf.convert_to_obj(tst)
+    assert obj == {
+        'inverters': {
+            'R170000000000001': {},
+            'Y170000000000001': {},
+            'allow_all': False,
+        },
+    }
+
+def test_cnv4():
+    tst = {
+   "inverters": [
+     {
+       "serial": "R170000000000001",
+       "node_id": "PV-Garage/",
+       "suggested_area": "Garage",
+       "modbus_polling": False,
+       "pv1.manufacturer": "man1",
+       "pv1.type": "type1",
+       "pv2.manufacturer": "man2",
+       "pv2.type": "type2",
+       "sensor_list": 688
+     },
+     {
+       "serial": "Y170000000000001",
+       "monitor_sn": 2000000000,
+       "node_id": "PV-Garage2/",
+       "suggested_area": "Garage2",
+       "modbus_polling": True,
+       "client_mode.host": "InverterIP",
+       "client_mode.port": 1234,
+       "client_mode.forward": True,
+       "pv1.manufacturer": "man1",
+       "pv1.type": "type1",
+       "pv2.manufacturer": "man2",
+       "pv2.type": "type2",
+       "pv3.manufacturer": "man3",
+       "pv3.type": "type3",
+       "pv4.manufacturer": "man4",
+       "pv4.type": "type4",
+       "sensor_list": 688
+     }
+   ],
+   "tsun.enabled": True,
+   "solarman.enabled": True,
+   "inverters.allow_all": False,
+   "gen3plus.at_acl.tsun.allow": [
+     "AT+Z",
+     "AT+UPURL",
+     "AT+SUPDATE"
+   ],
+   "gen3plus.at_acl.tsun.block": [
+     "AT+SUPDATE"
+   ],
+   "gen3plus.at_acl.mqtt.allow": [
+     "AT+"
+   ],
+   "gen3plus.at_acl.mqtt.block": [
+      "AT+SUPDATE"
+   ]
+}
+
+    cnf = ConfigReadJson()
+    obj = cnf.convert_to_obj(tst)
+    assert obj == {
+        'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': ['AT+SUPDATE']},
+                                 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'],
+                                          'block': ['AT+SUPDATE']}}},
+        'inverters': {'R170000000000001': {'modbus_polling': False,
+                                           'node_id': 'PV-Garage/',
+                                           'pv1': {
+                                               'manufacturer': 'man1',
+                                                'type': 'type1'},
+                                           'pv2': {
+                                               'manufacturer': 'man2',
+                                                'type': 'type2'},
+                                           'sensor_list': 688,
+                                           'suggested_area': 'Garage'},
+                      'Y170000000000001': {'client_mode': {
+                                                'host': 'InverterIP',
+                                                'port': 1234,
+                                                'forward': True},
+                                           'modbus_polling': True,
+                                           'monitor_sn': 2000000000,
+                                           'node_id': 'PV-Garage2/',
+                                           'pv1': {
+                                                'manufacturer': 'man1',
+                                                'type': 'type1'},
+                                           'pv2': {
+                                                'manufacturer': 'man2',
+                                                'type': 'type2'},
+                                           'pv3': {
+                                                'manufacturer': 'man3',
+                                                'type': 'type3'},
+                                           'pv4': {
+                                                'manufacturer': 'man4',
+                                                'type': 'type4'},
+                                           'sensor_list': 688,
+                                           'suggested_area': 'Garage2'},
+                      'allow_all': False},
+        'solarman': {'enabled': True},
+        'tsun': {'enabled': True}
+    }
+
+def test_cnv5():
+    """test a invalid list with missing serials"""
+    tst = {
+   "inverters": [
+     {
+       "node_id": "PV-Garage1/",
+     },
+     {
+       "serial": "Y170000000000001",
+       "node_id": "PV-Garage2/",
+     }
+   ],
+}
+    cnf = ConfigReadJson()
+    obj = cnf.convert_to_obj(tst)
+    assert obj == {
+        'inverters': {
+            'Y170000000000001': {'node_id': 'PV-Garage2/'}
+        },
+    }
+
+def test_cnv6():
+    """test overwritting a value in inverters"""
+    tst = {
+       "inverters": [{
+            "serial": "Y170000000000001",
+            "node_id": "PV-Garage2/",
+        }],
+    }
+    tst2 = {
+       "inverters": [{
+            "serial": "Y170000000000001",
+            "node_id": "PV-Garden/",
+        }],
+    }
+    cnf = ConfigReadJson()
+    conf = {}
+    for key, val in tst.items():
+        cnf.convert_inv_arr(conf, key, val)
+
+    assert conf == {
+        'inverters': {
+            'Y170000000000001': {'node_id': 'PV-Garage2/'}
+        },
+    }
+
+    for key, val in tst2.items():
+        cnf.convert_inv_arr(conf, key, val)
+
+    assert conf == {
+        'inverters': {
+            'Y170000000000001': {'node_id': 'PV-Garden/'}
+        },
+    }
+
+def test_empty_config(ConfigDefault):
+    test_buffer.rd = "{}"  # empty json
+    
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadJson()
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == ConfigDefault
+
+
+def test_full_config(ConfigComplete):
+    test_buffer.rd = """
+{
+   "inverters": [
+     {
+       "serial": "R170000000000001",
+       "node_id": "PV-Garage/",
+       "suggested_area": "Garage",
+       "modbus_polling": false,
+       "pv1.manufacturer": "man1",
+       "pv1.type": "type1",
+       "pv2.manufacturer": "man2",
+       "pv2.type": "type2",
+       "sensor_list": 688
+     },
+     {
+       "serial": "Y170000000000001",
+       "monitor_sn": 2000000000,
+       "node_id": "PV-Garage2/",
+       "suggested_area": "Garage2",
+       "modbus_polling": true,
+       "pv1.manufacturer": "man1",
+       "pv1.type": "type1",
+       "pv2.manufacturer": "man2",
+       "pv2.type": "type2",
+       "pv3.manufacturer": "man3",
+       "pv3.type": "type3",
+       "pv4.manufacturer": "man4",
+       "pv4.type": "type4",
+       "sensor_list": 688
+     }
+   ],
+   "tsun.enabled": true,
+   "solarman.enabled": true,
+   "inverters.allow_all": false,
+   "gen3plus.at_acl.tsun.allow": [
+     "AT+Z",
+     "AT+UPURL",
+     "AT+SUPDATE"
+   ],
+   "gen3plus.at_acl.tsun.block": [
+     "AT+SUPDATE"
+   ],
+   "gen3plus.at_acl.mqtt.allow": [
+     "AT+"
+   ],
+   "gen3plus.at_acl.mqtt.block": [
+      "AT+SUPDATE"
+   ]
+}
+"""
+    Config.init(ConfigReadToml("app/config/default_config.toml"))
+    for _ in patch_open():
+        ConfigReadJson()
+        err = Config.get_error()
+
+    assert err == None
+    cnf = Config.get()
+    assert cnf == ConfigComplete

app/tests/test_infos.py

@@ -2,8 +2,8 @@
 import pytest
 import json, math
 import logging
-from app.src.infos import Register, ClrAtMidnight
-from app.src.infos import Infos
+from infos import Register, ClrAtMidnight
+from infos import Infos, Fmt
 
 def test_statistic_counter():
     i = Infos()
@@ -17,13 +17,13 @@ def test_statistic_counter():
     assert val == None or val == 0
 
     i.static_init()                # initialize counter
-    assert json.dumps(i.stat) == json.dumps({"proxy": {"Inverter_Cnt": 0, "Unknown_SNR": 0, "Unknown_Msg": 0, "Invalid_Data_Type": 0, "Internal_Error": 0,"Unknown_Ctrl": 0, "OTA_Start_Msg": 0, "SW_Exception": 0, "Invalid_Msg_Format": 0, "AT_Command": 0, "AT_Command_Blocked": 0, "Modbus_Command": 0}})
+    assert json.dumps(i.stat) == json.dumps({"proxy": {"Inverter_Cnt": 0, "Cloud_Conn_Cnt": 0, "Unknown_SNR": 0, "Unknown_Msg": 0, "Invalid_Data_Type": 0, "Internal_Error": 0,"Unknown_Ctrl": 0, "OTA_Start_Msg": 0, "SW_Exception": 0, "Invalid_Msg_Format": 0, "AT_Command": 0, "AT_Command_Blocked": 0, "Modbus_Command": 0}})
                                             
     val = i.dev_value(Register.INVERTER_CNT)  # valid and initiliazed addr
     assert val == 0
 
     i.inc_counter('Inverter_Cnt')
-    assert json.dumps(i.stat) == json.dumps({"proxy": {"Inverter_Cnt": 1, "Unknown_SNR": 0, "Unknown_Msg": 0, "Invalid_Data_Type": 0, "Internal_Error": 0,"Unknown_Ctrl": 0, "OTA_Start_Msg": 0, "SW_Exception": 0, "Invalid_Msg_Format": 0, "AT_Command": 0, "AT_Command_Blocked": 0, "Modbus_Command": 0}})
+    assert json.dumps(i.stat) == json.dumps({"proxy": {"Inverter_Cnt": 1, "Cloud_Conn_Cnt": 0, "Unknown_SNR": 0, "Unknown_Msg": 0, "Invalid_Data_Type": 0, "Internal_Error": 0,"Unknown_Ctrl": 0, "OTA_Start_Msg": 0, "SW_Exception": 0, "Invalid_Msg_Format": 0, "AT_Command": 0, "AT_Command_Blocked": 0, "Modbus_Command": 0}})
     val = i.dev_value(Register.INVERTER_CNT)
     assert val == 1
 
@@ -256,3 +256,24 @@ def test_key_obj():
     assert level == logging.DEBUG
     assert unit == 'kWh'
     assert must_incr == True
+
+def test_hex4_cnv():
+    tst_val = (0x12ef, )
+    string = Fmt.hex4(tst_val)
+    assert string == '12ef'
+    val = Fmt.hex4(string, reverse=True)
+    assert val == tst_val[0]
+
+def test_mac_cnv():
+    tst_val = (0x12, 0x34,  0x67, 0x89, 0xcd, 0xef)
+    string = Fmt.mac(tst_val)
+    assert string == '12:34:67:89:cd:ef'
+    val = Fmt.mac(string, reverse=True)
+    assert val == tst_val
+
+def test_version_cnv():
+    tst_val = (0x123f, )
+    string = Fmt.version(tst_val)
+    assert string == 'V1.2.3F'
+    val = Fmt.version(string, reverse=True)
+    assert val == tst_val[0]

app/tests/test_infos_g3.py

@@ -1,7 +1,7 @@
 # test_with_pytest.py
-import pytest, json
-from app.src.infos import Register, ClrAtMidnight
-from app.src.gen3.infos_g3 import InfosG3
+import pytest, json, math
+from infos import Register
+from gen3.infos_g3 import InfosG3, RegisterMap
 
 @pytest.fixture
 def contr_data_seq(): # Get Time Request message
@@ -364,12 +364,12 @@ def test_build_ha_conf3(contr_data_seq, inv_data_seq, inv_data_seq2):
 
         if id == 'out_power_123':
             assert comp == 'sensor'
-            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/grid", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "out_power_123", "val_tpl": "{{value_json['Output_Power'] | float}}", "unit_of_meas": "W", "dev": {"name": "Micro Inverter - roof", "sa": "Micro Inverter - roof", "via_device": "controller_123", "mdl": "TSOL-MS600", "mf": "TSUN", "sw": "V5.0.11", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/grid", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "out_power_123", "val_tpl": "{{value_json['Output_Power'] | float}}", "unit_of_meas": "W", "dev": {"name": "Micro Inverter - roof", "sa": "Micro Inverter - roof", "via_device": "controller_123", "mdl": "TSOL-MS600", "mf": "TSUN", "sw": "V5.0.11", "sn": "T170000000000001", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
             tests +=1
 
         if id == 'daily_gen_123':
             assert comp == 'sensor'
-            assert  d_json == json.dumps({"name": "Daily Generation", "stat_t": "tsun/garagendach/total", "dev_cla": "energy", "stat_cla": "total_increasing", "uniq_id": "daily_gen_123", "val_tpl": "{{value_json['Daily_Generation'] | float}}", "unit_of_meas": "kWh", "ic": "mdi:solar-power-variant", "dev": {"name": "Micro Inverter - roof", "sa": "Micro Inverter - roof", "via_device": "controller_123", "mdl": "TSOL-MS600", "mf": "TSUN", "sw": "V5.0.11", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            assert  d_json == json.dumps({"name": "Daily Generation", "stat_t": "tsun/garagendach/total", "dev_cla": "energy", "stat_cla": "total_increasing", "uniq_id": "daily_gen_123", "val_tpl": "{{value_json['Daily_Generation'] | float}}", "unit_of_meas": "kWh", "ic": "mdi:solar-power-variant", "dev": {"name": "Micro Inverter - roof", "sa": "Micro Inverter - roof", "via_device": "controller_123", "mdl": "TSOL-MS600", "mf": "TSUN", "sw": "V5.0.11", "sn": "T170000000000001", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
             tests +=1
 
         elif id == 'power_pv1_123':
@@ -388,6 +388,32 @@ def test_build_ha_conf3(contr_data_seq, inv_data_seq, inv_data_seq2):
             tests +=1
     assert tests==5
 
+def test_build_ha_conf4(contr_data_seq, inv_data_seq):
+    i = InfosG3()
+    for key, result in i.parse (contr_data_seq):
+        pass  # side effect in calling i.parse()
+    for key, result in i.parse (inv_data_seq):
+        pass  # side effect in calling i.parse()
+    i.set_db_def_value(Register.MAC_ADDR, "00a057123456")
+
+    tests = 0
+    for d_json, comp, node_id, id in i.ha_confs(ha_prfx="tsun/", node_id="garagendach/", snr='123', sug_area = 'roof'):
+        if id == 'signal_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Signal Strength", "stat_t": "tsun/garagendach/controller", "dev_cla": None, "stat_cla": "measurement", "uniq_id": "signal_123", "val_tpl": "{{value_json[\'Signal_Strength\'] | int}}", "unit_of_meas": "%", "ic": "mdi:wifi", "dev": {"name": "Controller - roof", "sa": "Controller - roof", "via_device": "proxy", "mdl": "RSW-1-10001", "mf": "Raymon", "sw": "RSW_400_V1.00.06", "ids": ["controller_123"], "cns": [["mac", "00:a0:57:12:34:56"]]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+    assert tests==1
+
+    i.set_db_def_value(Register.MAC_ADDR, "00:a0:57:12:34:57")
+
+    tests = 0
+    for d_json, comp, node_id, id in i.ha_confs(ha_prfx="tsun/", node_id="garagendach/", snr='123', sug_area = 'roof'):
+        if id == 'signal_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Signal Strength", "stat_t": "tsun/garagendach/controller", "dev_cla": None, "stat_cla": "measurement", "uniq_id": "signal_123", "val_tpl": "{{value_json[\'Signal_Strength\'] | int}}", "unit_of_meas": "%", "ic": "mdi:wifi", "dev": {"name": "Controller - roof", "sa": "Controller - roof", "via_device": "proxy", "mdl": "RSW-1-10001", "mf": "Raymon", "sw": "RSW_400_V1.00.06", "ids": ["controller_123"], "cns": [["mac", "00:a0:57:12:34:57"]]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+    assert tests==1
+
 def test_must_incr_total(inv_data_seq2, inv_data_seq2_zero):
     i = InfosG3()
     tests = 0
@@ -395,21 +421,21 @@ def test_must_incr_total(inv_data_seq2, inv_data_seq2_zero):
         if key == 'total' or key == 'inverter' or key == 'env':
             assert update == True
             tests +=1   
-    assert tests==5
+    assert tests==12
     assert json.dumps(i.db['total']) == json.dumps({'Daily_Generation': 1.7, 'Total_Generation': 17.36})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 64.5, "Daily_Generation": 1.08, "Total_Generation": 9.74}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 45.7, "Daily_Generation": 0.62, "Total_Generation": 7.62}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
-    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Temp": 23})
+    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Status": 1, "Inverter_Temp": 23})
     tests = 0
     for key, update in i.parse (inv_data_seq2):
         if key == 'total' or key == 'env':
             assert update == False
             tests +=1   
 
-    assert tests==3
+    assert tests==4
     assert json.dumps(i.db['total']) == json.dumps({'Daily_Generation': 1.7, 'Total_Generation': 17.36})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 64.5, "Daily_Generation": 1.08, "Total_Generation": 9.74}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 45.7, "Daily_Generation": 0.62, "Total_Generation": 7.62}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
-    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Temp": 23})
-    assert json.dumps(i.db['inverter']) == json.dumps({"Rated_Power": 600, "No_Inputs": 2})
+    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Status": 1, "Inverter_Temp": 23})
+    assert json.dumps(i.db['inverter']) == json.dumps({"Rated_Power": 600, "BOOT_STATUS": 0, "DSP_STATUS": 21930, "Work_Mode": 0, "Max_Designed_Power": -1, "Input_Coefficient": -0.1, "Output_Coefficient": 100.0, "No_Inputs": 2})
         
     tests = 0
     for key, update in i.parse (inv_data_seq2_zero):
@@ -417,13 +443,12 @@ def test_must_incr_total(inv_data_seq2, inv_data_seq2_zero):
             assert update == False
             tests +=1   
         elif key == 'env':
-            assert update == True
             tests +=1   
 
-    assert tests==3
+    assert tests==4
     assert json.dumps(i.db['total']) == json.dumps({'Daily_Generation': 1.7, 'Total_Generation': 17.36})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 0.0, "Daily_Generation": 1.08, "Total_Generation": 9.74}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 0.0, "Daily_Generation": 0.62, "Total_Generation": 7.62}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
-    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Temp": 0})
+    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Status": 1, "Inverter_Temp": 0})
 
 def test_must_incr_total2(inv_data_seq2, inv_data_seq2_zero):
     i = InfosG3()
@@ -436,10 +461,10 @@ def test_must_incr_total2(inv_data_seq2, inv_data_seq2_zero):
             assert update == True
             tests +=1
 
-    assert tests==3
+    assert tests==4
     assert json.dumps(i.db['total']) == json.dumps({})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 0.0}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 0.0}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
-    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Temp": 0})
+    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Status": 1, "Inverter_Temp": 0})
     
     tests = 0
     for key, update in i.parse (inv_data_seq2_zero):
@@ -447,18 +472,17 @@ def test_must_incr_total2(inv_data_seq2, inv_data_seq2_zero):
             assert update == False
             tests +=1   
 
-    assert tests==3
+    assert tests==4
     assert json.dumps(i.db['total']) == json.dumps({})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 0.0}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 0.0}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
-    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Temp": 0})
+    assert json.dumps(i.db['env']) == json.dumps({"Inverter_Status": 1, "Inverter_Temp": 0})
 
     tests = 0
     for key, update in i.parse (inv_data_seq2):
         if key == 'total' or key == 'env':
-            assert update == True
             tests +=1   
 
-    assert tests==3
+    assert tests==4
     assert json.dumps(i.db['total']) == json.dumps({'Daily_Generation': 1.7, 'Total_Generation': 17.36})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {"Voltage": 33.6, "Current": 1.91, "Power": 64.5, "Daily_Generation": 1.08, "Total_Generation": 9.74}, "pv2": {"Voltage": 33.5, "Current": 1.36, "Power": 45.7, "Daily_Generation": 0.62, "Total_Generation": 7.62}, "pv3": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}, "pv4": {"Voltage": 0.0, "Current": 0.0, "Power": 0.0}})
    
@@ -477,10 +501,10 @@ def test_new_data_types(inv_data_new):
         else:
             assert False
 
-    assert tests==15
-    assert json.dumps(i.db['inverter']) == json.dumps({"Manufacturer": 0})
+    assert tests==7
+    assert json.dumps(i.db['inverter']) == json.dumps({"Manufacturer": 0, "DSP_STATUS": 0})
     assert json.dumps(i.db['input']) == json.dumps({"pv1": {}})
-    assert json.dumps(i.db['events']) == json.dumps({"401_": 0, "404_": 0, "405_": 0, "408_": 0, "409_No_Utility": 0, "406_": 0, "416_": 0})
+    assert json.dumps(i.db['events']) == json.dumps({"Inverter_Alarm": 0, "Inverter_Fault": 0})
 
 def test_invalid_data_type(invalid_data_seq):
     i = InfosG3()

app/tests/test_infos_g3p.py

@@ -1,9 +1,9 @@
 
 # test_with_pytest.py
 import pytest, json, math, random
-from app.src.infos import Register
-from app.src.gen3plus.infos_g3p import InfosG3P
-from app.src.gen3plus.infos_g3p import RegisterMap
+from infos import Register
+from gen3plus.infos_g3p import InfosG3P
+from gen3plus.infos_g3p import RegisterMap
 
 @pytest.fixture(scope="session")
 def str_test_ip():
@@ -57,6 +57,7 @@ def inverter_data():  # 0x4210 ftype: 0x01
     msg += b'\x01\x61\x00\xa8\x02\x54\x01\x5a\x00\x8a\x01\xe4\x01\x5a\x00\xbd'
     msg += b'\x02\x8f\x00\x11\x00\x01\x00\x00\x00\x0b\x00\x00\x27\x98\x00\x04'
     msg += b'\x00\x00\x0c\x04\x00\x03\x00\x00\x0a\xe7\x00\x05\x00\x00\x0c\x75'
+    
     msg += b'\x00\x00\x00\x00\x06\x16\x02\x00\x00\x00\x55\xaa\x00\x01\x00\x00'
     msg += b'\x00\x00\x00\x00\xff\xff\x07\xd0\x00\x03\x04\x00\x04\x00\x04\x00'
     msg += b'\x04\x00\x00\x01\xff\xff\x00\x01\x00\x06\x00\x68\x00\x68\x05\x00'
@@ -85,10 +86,21 @@ def test_parse_4110(str_test_ip, device_data: bytes):
         pass  # side effect is calling generator i.parse()
 
     assert json.dumps(i.db) == json.dumps({
-        'controller': {"Data_Up_Interval": 300, "Collect_Interval": 1, "Heartbeat_Interval": 120, "Signal_Strength": 100, "IP_Address": str_test_ip, "Sensor_List": "02b0"},
-        'collector': {"Chip_Model": "LSW5BLE_17_02B0_1.05", "Collector_Fw_Version": "V1.1.00.0B"},
+        'controller': {"Data_Up_Interval": 300, "Collect_Interval": 1, "Heartbeat_Interval": 120, "Signal_Strength": 100, "IP_Address": str_test_ip, "Sensor_List": "02b0", "WiFi_SSID": "Allius-Home"},
+        'collector': {"Chip_Model": "LSW5BLE_17_02B0_1.05", "MAC-Addr": "40:2a:8f:4f:51:54", "Collector_Fw_Version": "V1.1.00.0B"},
         })
 
+def test_build_4110(str_test_ip, device_data: bytes):
+    i = InfosG3P(client_mode=False)
+    i.db.clear()
+    for key, update in i.parse (device_data, 0x41, 2):
+        pass  # side effect is calling generator i.parse()
+
+    build_msg = i.build(len(device_data), 0x41, 2)
+    for i in range(11, 20):
+        build_msg[i] = device_data[i]
+    assert device_data == build_msg    
+
 def test_parse_4210(inverter_data: bytes):
     i = InfosG3P(client_mode=False)
     i.db.clear()
@@ -98,16 +110,31 @@ def test_parse_4210(inverter_data: bytes):
 
     assert json.dumps(i.db) == json.dumps({
          "controller": {"Sensor_List": "02b0", "Power_On_Time": 2051}, 
-         "inverter": {"Serial_Number": "Y17E00000000000E", "Version": "V4.0.10", "Rated_Power": 600, "Max_Designed_Power": 2000}, 
-         "env": {"Inverter_Status": 1, "Inverter_Temp": 14}, 
+         "inverter": {"Serial_Number": "Y17E00000000000E", "Version": "V4.0.10", "Rated_Power": 600, "BOOT_STATUS": 0, "DSP_STATUS": 21930, "Work_Mode": 0, "Max_Designed_Power": 2000, "Input_Coefficient": 100.0, "Output_Coefficient": 100.0}, 
+         "env": {"Inverter_Status": 1, "Detect_Status_1": 2, "Detect_Status_2": 0, "Inverter_Temp": 14}, 
+         "events": {"Inverter_Alarm": 0, "Inverter_Fault": 0, "Inverter_Bitfield_1": 0, "Inverter_bitfield_2": 0},
          "grid": {"Voltage": 224.8, "Current": 0.73, "Frequency": 50.05, "Output_Power": 165.8}, 
          "input": {"pv1": {"Voltage": 35.3, "Current": 1.68, "Power": 59.6, "Daily_Generation": 0.04, "Total_Generation": 30.76}, 
                    "pv2": {"Voltage": 34.6, "Current": 1.38, "Power": 48.4, "Daily_Generation": 0.03, "Total_Generation": 27.91}, 
                    "pv3": {"Voltage": 34.6, "Current": 1.89, "Power": 65.5, "Daily_Generation": 0.05, "Total_Generation": 31.89}, 
                    "pv4": {"Voltage": 1.7, "Current": 0.01, "Power": 0.0, "Total_Generation": 15.58}}, 
-         "total": {"Daily_Generation": 0.11, "Total_Generation": 101.36}
+         "total": {"Daily_Generation": 0.11, "Total_Generation": 101.36},
+         "inv_unknown": {"Unknown_1": 512},
+         "other": {"Output_Shutdown": 65535, "Rated_Level": 3, "Grid_Volt_Cal_Coef": 1024, "Prod_Compliance_Type": 6}
         })
+
+def test_build_4210(inverter_data: bytes):
+    i = InfosG3P(client_mode=False)
+    i.db.clear()
     
+    for key, update in i.parse (inverter_data, 0x42, 1):
+        pass  #  side effect is calling generator i.parse()
+
+    build_msg = i.build(len(inverter_data), 0x42, 1)
+    for i in range(11, 31):
+        build_msg[i] = inverter_data[i]
+    assert inverter_data == build_msg    
+
 def test_build_ha_conf1():
     i = InfosG3P(client_mode=False)
     i.static_init()                # initialize counter
@@ -256,10 +283,12 @@ def test_build_ha_conf4():
 
     assert tests==1
 
-def test_exception_and_eval(inverter_data: bytes):
+def test_exception_and_calc(inverter_data: bytes):
 
-    # add eval to convert temperature from °F to °C
-    RegisterMap.map[0x420100d8]['eval'] =  '(result-32)/1.8'
+    # patch table to convert temperature from °F to °C
+    ofs =     RegisterMap.map[0x420100d8]['offset']
+    RegisterMap.map[0x420100d8]['quotient'] =  1.8
+    RegisterMap.map[0x420100d8]['offset'] =  -32/1.8
     # map PV1_VOLTAGE to invalid register  
     RegisterMap.map[0x420100e0]['reg'] = Register.TEST_REG2
     # set invalid maping entry for OUTPUT_POWER (string instead of dict type) 
@@ -267,16 +296,43 @@ def test_exception_and_eval(inverter_data: bytes):
     RegisterMap.map[0x420100de] = 'invalid_entry'
 
     i = InfosG3P(client_mode=False)
-    # i.db.clear()
+    i.db.clear()
     
     for key, update in i.parse (inverter_data, 0x42, 1):
         pass  #  side effect is calling generator i.parse()
     assert math.isclose(12.2222, round (i.get_db_value(Register.INVERTER_TEMP, 0),4), rel_tol=1e-09, abs_tol=1e-09)
-    del RegisterMap.map[0x420100d8]['eval'] # remove eval
-    RegisterMap.map[0x420100e0]['reg'] = Register.PV1_VOLTAGE # reset mapping
-    RegisterMap.map[0x420100de] = backup # reset mapping
+    
+    build_msg = i.build(len(inverter_data), 0x42, 1)
+    assert build_msg[32:0xde] == inverter_data[32:0xde]
+    assert build_msg[0xde:0xe2] == b'\x00\x00\x00\x00'
+    assert build_msg[0xe2:-1] == inverter_data[0xe2:-1]
+
+
+    # remove a table entry and test parsing and building
+    del RegisterMap.map[0x420100d8]['quotient']
+    del RegisterMap.map[0x420100d8]['offset']
+
+    i.db.clear()
     
     for key, update in i.parse (inverter_data, 0x42, 1):
         pass  #  side effect is calling generator i.parse()
     assert 54 == i.get_db_value(Register.INVERTER_TEMP, 0)
- 
+
+    build_msg = i.build(len(inverter_data), 0x42, 1)
+    assert build_msg[32:0xd8] == inverter_data[32:0xd8]
+    assert build_msg[0xd8:0xe2] == b'\x006\x00\x00\x02X\x00\x00\x00\x00'
+    assert build_msg[0xe2:-1] == inverter_data[0xe2:-1]
+
+    # test restore table 
+    RegisterMap.map[0x420100d8]['offset'] = ofs
+    RegisterMap.map[0x420100e0]['reg'] = Register.PV1_VOLTAGE # reset mapping
+    RegisterMap.map[0x420100de] = backup # reset mapping
+
+    # test orginial table 
+    i.db.clear()    
+    for key, update in i.parse (inverter_data, 0x42, 1):
+        pass  #  side effect is calling generator i.parse()
+    assert 14 == i.get_db_value(Register.INVERTER_TEMP, 0)
+
+    build_msg = i.build(len(inverter_data), 0x42, 1)
+    assert build_msg[32:-1] == inverter_data[32:-1]

app/tests/test_inverter_base.py

@@ -0,0 +1,417 @@
+# test_with_pytest.py
+import pytest
+import asyncio
+import gc
+
+from mock import patch
+from enum import Enum
+from infos import Infos
+from cnf.config import Config
+from gen3.talent import Talent
+from inverter_base import InverterBase
+from singleton import Singleton
+from async_stream import AsyncStream, AsyncStreamClient
+
+from test_modbus_tcp import patch_mqtt_err, patch_mqtt_except, test_port, test_hostname
+
+pytest_plugins = ('pytest_asyncio',)
+
+# initialize the proxy statistics
+Infos.static_init()
+
+@pytest.fixture
+def config_conn():
+    Config.act_config = {
+        'mqtt':{
+            'host': test_hostname,
+            'port': test_port,
+            'user': '',
+            'passwd': ''
+        },
+        'ha':{
+            'auto_conf_prefix': 'homeassistant',
+            'discovery_prefix': 'homeassistant', 
+            'entity_prefix': 'tsun',
+            'proxy_node_id': 'test_1',
+            'proxy_unique_id': ''
+        },
+        'tsun':{'enabled': True, 'host': 'test_cloud.local', 'port': 1234}, 'inverters':{'allow_all':True}
+    }
+
+@pytest.fixture(scope="module", autouse=True)
+def module_init():
+    Singleton._instances.clear()
+    yield
+
+class FakeReader():
+    def __init__(self):
+        self.on_recv =  asyncio.Event()
+    async def read(self, max_len: int):
+        await self.on_recv.wait()
+        return b''
+    def feed_eof(self):
+        return
+
+
+class FakeWriter():
+    peer = ('47.1.2.3', 10000)
+    def write(self, buf: bytes):
+        return
+    def get_extra_info(self, sel: str):
+        if sel == 'peername':
+            return self.peer
+        elif sel == 'sockname':
+            return 'sock:1234'
+        assert False
+    def is_closing(self):
+        return False
+    def close(self):
+        return
+    async def wait_closed(self):
+        return
+
+class MockType(Enum):
+    RD_TEST_0_BYTES = 1
+    RD_TEST_TIMEOUT = 2
+    RD_TEST_EXCEPT = 3
+
+
+test  = MockType.RD_TEST_0_BYTES
+
+@pytest.fixture
+def patch_open_connection():
+    async def new_conn(conn):
+        await asyncio.sleep(0)
+        return FakeReader(), FakeWriter()
+    
+    def new_open(host: str, port: int):
+        global test
+        if test == MockType.RD_TEST_TIMEOUT:
+            raise ConnectionRefusedError
+        elif test == MockType.RD_TEST_EXCEPT:
+            raise ValueError("Value cannot be negative") # Compliant
+        return new_conn(None)
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+
+@pytest.fixture
+def patch_healthy():
+    with patch.object(AsyncStream, 'healthy') as conn:
+        yield conn
+
+@pytest.fixture
+def patch_unhealthy():
+    def new_healthy(self):
+        return False
+    with patch.object(AsyncStream, 'healthy', new_healthy) as conn:
+        yield conn
+@pytest.fixture
+def patch_unhealthy_remote():
+    def new_healthy(self):
+        return False
+    with patch.object(AsyncStreamClient, 'healthy', new_healthy) as conn:
+        yield conn
+
+def test_inverter_iter():
+    InverterBase._registry.clear()
+    cnt = 0
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        for inv in InverterBase:
+            assert inv == inverter
+            cnt += 1
+            del inv
+    del inverter
+    assert cnt == 1
+    
+    for inv in InverterBase:
+        assert False
+
+def test_method_calls(patch_healthy):
+    spy = patch_healthy
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        # call healthy inside the contexter manager
+        for inv in InverterBase:
+            assert inv.healthy() 
+            del inv
+        spy.assert_called_once()
+
+    # outside context manager the health function of AsyncStream is not reachable
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()
+        cnt += 1
+        del inv
+    assert cnt == 1
+    spy.assert_called_once() # counter don't increase and keep one!
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+def test_unhealthy(patch_unhealthy):
+    _ = patch_unhealthy
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        # call healthy inside the contexter manager
+        assert not inverter.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+def test_unhealthy_remote(patch_unhealthy_remote):
+    _ = patch_unhealthy
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        # call healthy inside the contexter manager
+        assert not inverter.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_conn(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream
+        assert inverter.remote.ifc
+        # call healthy inside the contexter manager
+        assert inverter.healthy()
+
+    # call healthy outside the contexter manager (__exit__() was called)
+    assert inverter.healthy()
+    del inverter
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_conn_to_private(config_conn, patch_open_connection):
+    '''check DNS resolving of the TSUN FQDN to a local address'''
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+    FakeWriter.peer = ("192.168.0.1", 10000)
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert not Config.act_config['tsun']['enabled']
+        assert inverter.remote.stream
+        assert inverter.remote.ifc
+        assert inverter.local.ifc.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    FakeWriter.peer = ("47.1.2.3", 10000)
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+
+@pytest.mark.asyncio
+async def test_remote_conn_to_loopback(config_conn, patch_open_connection):
+    '''check DNS resolving of the TSUN FQDN to the loopback address'''
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+    FakeWriter.peer = ("127.0.0.1", 10000)
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert not Config.act_config['tsun']['enabled']
+        assert inverter.remote.stream
+        assert inverter.remote.ifc
+        assert inverter.local.ifc.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    FakeWriter.peer = ("47.1.2.3", 10000)
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_conn_to_None(config_conn, patch_open_connection):
+    '''check if get_extra_info() return None in case of an error'''
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+    FakeWriter.peer = None
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert Config.act_config['tsun']['enabled']
+        assert inverter.remote.stream
+        assert inverter.remote.ifc
+        assert inverter.local.ifc.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    FakeWriter.peer = ("47.1.2.3", 10000)
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_unhealthy_remote(config_conn, patch_open_connection, patch_unhealthy_remote):
+    _ = config_conn
+    _ = patch_open_connection
+    _ = patch_unhealthy_remote
+    assert asyncio.get_running_loop()
+    InverterBase._registry.clear()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream
+        assert inverter.remote.ifc
+        assert inverter.local.ifc.healthy()
+        assert not inverter.remote.ifc.healthy()
+        # call healthy inside the contexter manager
+        assert not inverter.healthy()
+
+    # outside context manager the unhealth AsyncStream is released
+    cnt = 0
+    for inv in InverterBase:
+        assert inv.healthy()  # inverter is healthy again (without the unhealty AsyncStream)
+        cnt += 1
+        del inv
+    assert cnt == 1
+
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_disc(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    reader = FakeReader()
+    writer =  FakeWriter()
+
+    with InverterBase(reader, writer, 'tsun', Talent) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream
+        # call disc inside the contexter manager
+        await inverter.disc()
+        
+    # call disc outside the contexter manager (__exit__() was called)
+    await inverter.disc()
+    del inverter
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0

app/tests/test_inverter_g3.py

@@ -0,0 +1,226 @@
+# test_with_pytest.py
+import pytest
+import asyncio
+import sys,gc
+
+from mock import patch
+from enum import Enum
+from infos import Infos
+from cnf.config import Config
+from proxy import Proxy
+from inverter_base import InverterBase
+from singleton import Singleton
+from gen3.inverter_g3 import InverterG3
+from async_stream import AsyncStream
+
+from test_modbus_tcp import patch_mqtt_err, patch_mqtt_except, test_port, test_hostname
+
+pytest_plugins = ('pytest_asyncio',)
+
+# initialize the proxy statistics
+Infos.static_init()
+
+@pytest.fixture
+def config_conn():
+    Config.act_config = {
+        'mqtt':{
+            'host': test_hostname,
+            'port': test_port,
+            'user': '',
+            'passwd': ''
+        },
+        'ha':{
+            'auto_conf_prefix': 'homeassistant',
+            'discovery_prefix': 'homeassistant', 
+            'entity_prefix': 'tsun',
+            'proxy_node_id': 'test_1',
+            'proxy_unique_id': ''
+        },
+        'tsun':{'enabled': True, 'host': 'test_cloud.local', 'port': 1234}, 'inverters':{'allow_all':True}
+    }
+
+@pytest.fixture(scope="module", autouse=True)
+def module_init():
+    Singleton._instances.clear()
+    yield
+
+class FakeReader():
+    def __init__(self):
+        self.on_recv =  asyncio.Event()
+    async def read(self, max_len: int):
+        await self.on_recv.wait()
+        return b''
+    def feed_eof(self):
+        return
+
+
+class FakeWriter():
+    def write(self, buf: bytes):
+        return
+    def get_extra_info(self, sel: str):
+        if sel == 'peername':
+            return ('47.1.2.3', 10000)
+        elif sel == 'sockname':
+            return 'sock:1234'
+        assert False
+    def is_closing(self):
+        return False
+    def close(self):
+        return
+    async def wait_closed(self):
+        return
+
+class MockType(Enum):
+    RD_TEST_0_BYTES = 1
+    RD_TEST_TIMEOUT = 2
+    RD_TEST_EXCEPT = 3
+
+
+test  = MockType.RD_TEST_0_BYTES
+
+@pytest.fixture
+def patch_open_connection():
+    async def new_conn(conn):
+        await asyncio.sleep(0)
+        return FakeReader(), FakeWriter()
+    
+    def new_open(host: str, port: int):
+        global test
+        if test == MockType.RD_TEST_TIMEOUT:
+            raise ConnectionRefusedError
+        elif test == MockType.RD_TEST_EXCEPT:
+            raise ValueError("Value cannot be negative") # Compliant
+        return new_conn(None)
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+@pytest.fixture
+def patch_healthy():
+    with patch.object(AsyncStream, 'healthy') as conn:
+        yield conn
+
+def test_method_calls(patch_healthy):
+    spy = patch_healthy
+    reader = FakeReader()
+    writer =  FakeWriter()
+    InverterBase._registry.clear()
+
+    with InverterG3(reader, writer) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+        for inv in InverterBase:
+            inv.healthy()
+            del inv
+        spy.assert_called_once()
+    del inverter
+    cnt = 0
+    for inv in InverterBase:
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_conn(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+
+    with InverterG3(FakeReader(), FakeWriter()) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream
+    del inverter
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_remote_except(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+
+    global test
+    test  = MockType.RD_TEST_TIMEOUT
+
+    with InverterG3(FakeReader(), FakeWriter()) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream==None
+
+        test  = MockType.RD_TEST_EXCEPT
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream==None
+    del inverter
+
+    cnt = 0
+    for inv in InverterBase:
+        print(f'InverterBase refs:{gc.get_referrers(inv)}')
+        cnt += 1
+    assert cnt == 0
+
+@pytest.mark.asyncio
+async def test_mqtt_publish(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3(FakeReader(), FakeWriter()) as inverter:
+        stream = inverter.local.stream
+        await inverter.async_publ_mqtt()  # check call with invalid unique_id
+        stream._Talent__set_serial_no(serial_no= "123344")
+
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == False
+
+        stream.new_data['env'] = True
+        stream.db.db['env'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['env'] == False
+
+        Infos.new_stat_data['proxy'] = True
+        await inverter.async_publ_mqtt()
+        assert Infos.new_stat_data['proxy'] == False
+
+@pytest.mark.asyncio
+async def test_mqtt_err(config_conn, patch_open_connection, patch_mqtt_err):
+    _ = config_conn
+    _ = patch_open_connection
+    _ = patch_mqtt_err
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3(FakeReader(), FakeWriter()) as inverter:
+        stream = inverter.local.stream
+        stream._Talent__set_serial_no(serial_no= "123344")
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == True
+
+@pytest.mark.asyncio
+async def test_mqtt_except(config_conn, patch_open_connection, patch_mqtt_except):
+    _ = config_conn
+    _ = patch_open_connection
+    _ = patch_mqtt_except
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3(FakeReader(), FakeWriter()) as inverter:
+        stream = inverter.local.stream
+        stream._Talent__set_serial_no(serial_no= "123344")
+
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == True

app/tests/test_inverter_g3p.py

@@ -0,0 +1,197 @@
+# test_with_pytest.py
+import pytest
+import asyncio
+
+from mock import patch
+from enum import Enum
+from infos import Infos
+from cnf.config import Config
+from proxy import Proxy
+from inverter_base import InverterBase
+from singleton import Singleton
+from gen3plus.inverter_g3p import InverterG3P
+
+from test_modbus_tcp import patch_mqtt_err, patch_mqtt_except, test_port, test_hostname
+
+
+pytest_plugins = ('pytest_asyncio',)
+
+# initialize the proxy statistics
+Infos.static_init()
+
+@pytest.fixture
+def config_conn():
+    Config.act_config = {
+        'mqtt':{
+            'host': test_hostname,
+            'port': test_port,
+            'user': '',
+            'passwd': ''
+        },
+        'ha':{
+            'auto_conf_prefix': 'homeassistant',
+            'discovery_prefix': 'homeassistant', 
+            'entity_prefix': 'tsun',
+            'proxy_node_id': 'test_1',
+            'proxy_unique_id': ''
+        },
+        'solarman':{'enabled': True, 'host': 'test_cloud.local', 'port': 1234}, 'inverters':{'allow_all':True}
+    }
+
+@pytest.fixture(scope="module", autouse=True)
+def module_init():
+    Singleton._instances.clear()
+    yield
+
+class FakeReader():
+    def __init__(self):
+        self.on_recv =  asyncio.Event()
+    async def read(self, max_len: int):
+        await self.on_recv.wait()
+        return b''
+    def feed_eof(self):
+        return
+
+
+class FakeWriter():
+    def write(self, buf: bytes):
+        return
+    def get_extra_info(self, sel: str):
+        if sel == 'peername':
+            return ('47.1.2.3', 10000)
+        elif sel == 'sockname':
+            return 'sock:1234'
+        assert False
+    def is_closing(self):
+        return False
+    def close(self):
+        return
+    async def wait_closed(self):
+        return
+
+class MockType(Enum):
+    RD_TEST_0_BYTES = 1
+    RD_TEST_TIMEOUT = 2
+    RD_TEST_EXCEPT = 3
+
+
+test  = MockType.RD_TEST_0_BYTES
+
+@pytest.fixture
+def patch_open_connection():
+    async def new_conn(conn):
+        await asyncio.sleep(0)
+        return FakeReader(), FakeWriter()
+    
+    def new_open(host: str, port: int):
+        global test
+        if test == MockType.RD_TEST_TIMEOUT:
+            raise ConnectionRefusedError
+        elif test == MockType.RD_TEST_EXCEPT:
+            raise ValueError("Value cannot be negative") # Compliant
+        return new_conn(None)
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+def test_method_calls(config_conn):
+    _ = config_conn
+    reader = FakeReader()
+    writer =  FakeWriter()
+    InverterBase._registry.clear()
+
+    with InverterG3P(reader, writer, client_mode=False) as inverter:
+        assert inverter.local.stream
+        assert inverter.local.ifc
+
+@pytest.mark.asyncio
+async def test_remote_conn(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+
+    with InverterG3P(FakeReader(), FakeWriter(), client_mode=False) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream
+
+@pytest.mark.asyncio
+async def test_remote_except(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+    
+    global test
+    test  = MockType.RD_TEST_TIMEOUT
+
+    with InverterG3P(FakeReader(), FakeWriter(), client_mode=False) as inverter:
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream==None
+
+        test  = MockType.RD_TEST_EXCEPT
+        await inverter.create_remote()
+        await asyncio.sleep(0)
+        assert inverter.remote.stream==None
+
+@pytest.mark.asyncio
+async def test_mqtt_publish(config_conn, patch_open_connection):
+    _ = config_conn
+    _ = patch_open_connection
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3P(FakeReader(), FakeWriter(), client_mode=False) as inverter:
+        stream = inverter.local.stream
+        await inverter.async_publ_mqtt()  # check call with invalid unique_id   
+        stream._set_serial_no(snr= 123344)
+
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == False
+
+        stream.new_data['env'] = True
+        stream.db.db['env'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['env'] == False
+
+        Infos.new_stat_data['proxy'] = True
+        await inverter.async_publ_mqtt()
+        assert Infos.new_stat_data['proxy'] == False
+
+@pytest.mark.asyncio
+async def test_mqtt_err(config_conn, patch_open_connection, patch_mqtt_err):
+    _ = config_conn
+    _ = patch_open_connection
+    _ = patch_mqtt_err
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3P(FakeReader(), FakeWriter(), client_mode=False) as inverter:
+        stream = inverter.local.stream
+        stream._set_serial_no(snr= 123344)    
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == True
+
+@pytest.mark.asyncio
+async def test_mqtt_except(config_conn, patch_open_connection, patch_mqtt_except):
+    _ = config_conn
+    _ = patch_open_connection
+    _ = patch_mqtt_except
+    assert asyncio.get_running_loop()
+
+    Proxy.class_init()
+
+    with InverterG3P(FakeReader(), FakeWriter(), client_mode=False) as inverter:
+        stream = inverter.local.stream
+        stream._set_serial_no(snr= 123344)
+
+        stream.new_data['inverter'] = True
+        stream.db.db['inverter'] = {}
+        await inverter.async_publ_mqtt()
+        assert stream.new_data['inverter'] == True

app/tests/test_modbus.py

@@ -1,8 +1,8 @@
 # test_with_pytest.py
 import pytest
 import asyncio
-from app.src.modbus import Modbus
-from app.src.infos import Infos, Register
+from modbus import Modbus
+from infos import Infos, Register
 
 pytest_plugins = ('pytest_asyncio',)
 
@@ -77,9 +77,10 @@ def test_recv_resp_crc_err():
     mb.last_fcode = 3   
     mb.last_reg = 0x300e
     mb.last_len = 2
+    mb.set_node_id('test')
     # check matching response, but with CRC error
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf3', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf3'):
         call += 1
     assert mb.err == 1
     assert 0 == call
@@ -97,10 +98,11 @@ def test_recv_resp_invalid_addr():
     mb.last_fcode = 3   
     mb.last_reg = 0x300e
     mb.last_len = 2
+    mb.set_node_id('test')
 
     # check not matching response, with wrong server addr
     call = 0
-    for key, update in mb.recv_resp(mb.db, b'\x02\x03\x04\x01\x2c\x00\x46\x88\xf4', 'test'):
+    for key, update in mb.recv_resp(mb.db, b'\x02\x03\x04\x01\x2c\x00\x46\x88\xf4'):
         call += 1
     assert mb.err == 2
     assert 0 == call
@@ -120,7 +122,8 @@ def test_recv_recv_fcode():
    
     # check not matching response, with wrong function code
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4', 'test'):
+    mb.set_node_id('test')
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4'):
         call += 1
 
     assert mb.err == 3
@@ -142,7 +145,8 @@ def test_recv_resp_len():
 
     # check not matching response, with wrong data length
     call = 0
-    for key, update, _ in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4', 'test'):
+    mb.set_node_id('test')
+    for key, update, _ in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4'):
         call += 1
 
     assert mb.err == 4
@@ -161,7 +165,8 @@ def test_recv_unexpect_resp():
    
     # check unexpected response, which must be dropped
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4', 'test'):
+    mb.set_node_id('test')
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4'):
         call += 1
 
     assert mb.err == 5
@@ -177,8 +182,9 @@ def test_parse_resp():
     assert mb.req_pend
 
     call = 0
+    mb.set_node_id('test')
     exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8'):
         if key == 'grid':
             assert update == True
         elif key == 'inverter':
@@ -226,8 +232,9 @@ def test_queue2():
     assert mb.send_calls == 1
     assert mb.pdu == b'\x01\x030\x07\x00\x06{\t'
     call = 0
+    mb.set_node_id('test')
     exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8'):
         if key == 'grid':
             assert update == True
         elif key == 'inverter':
@@ -245,14 +252,14 @@ def test_queue2():
     assert mb.send_calls == 2
     assert mb.pdu == b'\x01\x06\x20\x08\x00\x04\x02\x0b'
 
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x06\x20\x08\x00\x04\x02\x0b', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x06\x20\x08\x00\x04\x02\x0b'):
         pass  # call generator mb.recv_resp()
 
     assert mb.que.qsize() == 0
     assert mb.send_calls == 3
     assert mb.pdu == b'\x01\x030\x07\x00\x06{\t'
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8'):
         call += 1
     assert 0 == mb.err
     assert 5 == call
@@ -276,8 +283,9 @@ def test_queue3():
     assert mb.recv_responses == 0
 
     call = 0
+    mb.set_node_id('test')
     exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8'):
         if key == 'grid':
             assert update == True
         elif key == 'inverter':
@@ -296,7 +304,7 @@ def test_queue3():
     assert mb.send_calls == 2
     assert mb.pdu == b'\x01\x06\x20\x08\x00\x04\x02\x0b'
 
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x06\x20\x08\x00\x04\x02\x0b', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x06\x20\x08\x00\x04\x02\x0b'):
         pass  # no code in loop is OK; calling the generator is the purpose
     assert 0 == mb.err
     assert mb.recv_responses == 2
@@ -305,7 +313,7 @@ def test_queue3():
     assert mb.send_calls == 3
     assert mb.pdu == b'\x01\x030\x07\x00\x06{\t'
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8'):
         call += 1
     assert 0 == mb.err
     assert mb.recv_responses == 2
@@ -373,7 +381,8 @@ def test_recv_unknown_data():
 
     # check matching response, but with CRC error
     call = 0
-    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4', 'test'):
+    mb.set_node_id('test')
+    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x04\x01\x2c\x00\x46\xbb\xf4'):
         call += 1
     assert mb.err == 0
     assert 0 == call

app/tests/test_modbus_tcp.py

@@ -1,16 +1,18 @@
 # test_with_pytest.py
 import pytest
 import asyncio
+from aiomqtt import MqttCodeError
 
 from mock import patch
 from enum import Enum
-from app.src.singleton import Singleton
-from app.src.config import Config
-from app.src.infos import Infos
-from app.src.mqtt import Mqtt
-from app.src.messages import Message, State
-from app.src.inverter import Inverter
-from app.src.modbus_tcp import ModbusConn, ModbusTcp
+from singleton import Singleton
+from cnf.config import Config
+from infos import Infos
+from mqtt import Mqtt
+from inverter_base import InverterBase
+from messages import Message, State
+from proxy import Proxy
+from modbus_tcp import ModbusConn, ModbusTcp
 
 
 pytest_plugins = ('pytest_asyncio',)
@@ -50,6 +52,10 @@ def config_conn(test_hostname, test_port):
                             'proxy_node_id': 'test_1',
                             'proxy_unique_id': ''
                         },
+                        'solarman':{
+                            'host': 'access1.solarmanpv.com',
+                            'port': 10000
+                        },
                         'inverters':{
                             'allow_all': True,
                             "R170000000000001":{
@@ -63,61 +69,101 @@ def config_conn(test_hostname, test_port):
                                 'sensor_list': 0x2b0,
                                 'client_mode':{
                                     'host': '192.168.0.1', 
-                                    'port': 8899
+                                    'port': 8899,
+                                    'forward': True
                                 }  
                             }
                         }
     }
 
 
-class TestType(Enum):
+class FakeReader():
     RD_TEST_0_BYTES = 1
     RD_TEST_TIMEOUT = 2
+    RD_TEST_13_BYTES = 3
+    RD_TEST_SW_EXCEPT = 4
+    RD_TEST_OS_ERROR = 5
 
-
-test  = TestType.RD_TEST_0_BYTES
-
-class FakeReader():
     def __init__(self):
         self.on_recv =  asyncio.Event()
+        self.test  = self.RD_TEST_0_BYTES
+
     async def read(self, max_len: int):
+        print(f'fakeReader test: {self.test}')
         await self.on_recv.wait()
-        if test == TestType.RD_TEST_0_BYTES:
+        if self.test == self.RD_TEST_0_BYTES:
             return b''
-        elif test == TestType.RD_TEST_TIMEOUT:
+        elif self.test == self.RD_TEST_13_BYTES:
+            print('fakeReader return 13 bytes')
+            self.test = self.RD_TEST_0_BYTES
+            return b'test-data-req'
+        elif self.test == self.RD_TEST_TIMEOUT:
             raise TimeoutError
+        elif self.test == self.RD_TEST_SW_EXCEPT:
+            self.test = self.RD_TEST_0_BYTES
+            self.unknown_var += 1    
+        elif self.test == self.RD_TEST_OS_ERROR:
+            self.test = self.RD_TEST_0_BYTES
+            raise ConnectionRefusedError
+
     def feed_eof(self):
         return
 
 
 class FakeWriter():
+    def __init__(self, conn='remote.intern'):
+        self.conn = conn
+        self.closing = False
     def write(self, buf: bytes):
         return
+    async def drain(self):
+        await asyncio.sleep(0)
     def get_extra_info(self, sel: str):
         if sel == 'peername':
-            return 'remote.intern'
+            return self.conn
         elif sel == 'sockname':
             return 'sock:1234'
         assert False
     def is_closing(self):
-        return False
+        return self.closing
     def close(self):
-        return
+        self.closing = True
     async def wait_closed(self):
-        return
+        await asyncio.sleep(0)
 
 
 @pytest.fixture
 def patch_open():
     async def new_conn(conn):
         await asyncio.sleep(0)
-        return FakeReader(), FakeWriter()
+        return FakeReader(), FakeWriter(conn)
     
     def new_open(host: str, port: int):
-        global test
-        if test == TestType.RD_TEST_TIMEOUT:
-            raise TimeoutError
-        return new_conn(None)
+        return new_conn(f'{host}:{port}')
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+@pytest.fixture
+def patch_open_timeout():
+    def new_open(host: str, port: int):
+        raise TimeoutError
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+@pytest.fixture
+def patch_open_value_error():
+    def new_open(host: str, port: int):
+        raise ValueError
+
+    with patch.object(asyncio, 'open_connection', new_open) as conn:
+        yield conn
+
+@pytest.fixture
+def patch_open_conn_abort():
+    def new_open(host: str, port: int):
+        raise ConnectionAbortedError
 
     with patch.object(asyncio, 'open_connection', new_open) as conn:
         yield conn
@@ -127,19 +173,39 @@ def patch_no_mqtt():
     with patch.object(Mqtt, 'publish') as conn:
         yield conn
 
+@pytest.fixture
+def patch_mqtt_err():
+    def new_publish(self, key, data):
+        raise MqttCodeError(None)
+
+    with patch.object(Mqtt, 'publish', new_publish) as conn:
+        yield conn
+
+@pytest.fixture
+def patch_mqtt_except():
+    def new_publish(self, key, data):
+        raise ValueError("Test")
+
+    with patch.object(Mqtt, 'publish', new_publish) as conn:
+        yield conn
 
 @pytest.mark.asyncio
 async def test_modbus_conn(patch_open):
     _ = patch_open
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
 
-    async with ModbusConn('test.local', 1234) as stream:
+    async with ModbusConn('test.local', 1234) as inverter:
+        stream = inverter.local.stream
         assert stream.node_id == 'G3P'
-        assert stream.addr == ('test.local', 1234)
-        assert type(stream.reader) is FakeReader
-        assert type(stream.writer) is FakeWriter
+        assert stream.addr == ('test.local:1234')
+        assert type(stream.ifc._reader) is FakeReader
+        assert type(stream.ifc._writer) is FakeWriter
         assert Infos.stat['proxy']['Inverter_Cnt'] == 1
-    
+        del inverter
+
+    for _ in InverterBase:
+        assert False
+
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
 
 @pytest.mark.asyncio
@@ -150,13 +216,47 @@ async def test_modbus_no_cnf():
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
 
 @pytest.mark.asyncio
-async def test_modbus_cnf1(config_conn, patch_open):
+async def test_modbus_timeout(config_conn, patch_open_timeout):
     _ = config_conn
-    _ = patch_open
-    global test
+    _ = patch_open_timeout
     assert asyncio.get_running_loop()
-    Inverter.class_init()
-    test = TestType.RD_TEST_TIMEOUT
+    Proxy.class_init()
+
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+    loop = asyncio.get_event_loop()
+    ModbusTcp(loop)
+    await asyncio.sleep(0.01)
+    for m in Message:
+        if (m.node_id == 'inv_2'):
+            assert False
+        
+    await asyncio.sleep(0.01)
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+
+@pytest.mark.asyncio
+async def test_modbus_value_err(config_conn, patch_open_value_error):
+    _ = config_conn
+    _ = patch_open_value_error
+    assert asyncio.get_running_loop()
+    Proxy.class_init()
+
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+    loop = asyncio.get_event_loop()
+    ModbusTcp(loop)
+    await asyncio.sleep(0.01)
+    for m in Message:
+        if (m.node_id == 'inv_2'):
+            assert False
+        
+    await asyncio.sleep(0.01)
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+
+@pytest.mark.asyncio
+async def test_modbus_conn_abort(config_conn, patch_open_conn_abort):
+    _ = config_conn
+    _ = patch_open_conn_abort
+    assert asyncio.get_running_loop()
+    Proxy.class_init()
 
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
     loop = asyncio.get_event_loop()
@@ -174,10 +274,8 @@ async def test_modbus_cnf2(config_conn, patch_no_mqtt, patch_open):
     _ = config_conn
     _ = patch_open
     _ = patch_no_mqtt
-    global test
     assert asyncio.get_running_loop()
-    Inverter.class_init()
-    test = TestType.RD_TEST_0_BYTES
+    Proxy.class_init()
 
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
     ModbusTcp(asyncio.get_event_loop())
@@ -188,27 +286,20 @@ async def test_modbus_cnf2(config_conn, patch_no_mqtt, patch_open):
             test += 1
             assert Infos.stat['proxy']['Inverter_Cnt'] == 1
             m.shutdown_started = True
-            m.reader.on_recv.set()
+            m.ifc._reader.on_recv.set()
             del m
         
     assert 1 == test
     await asyncio.sleep(0.01)
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
-    # check that the connection is released
-    for m in Message:
-        if (m.node_id == 'inv_2'):
-            assert False
-
 
 @pytest.mark.asyncio
 async def test_modbus_cnf3(config_conn, patch_no_mqtt, patch_open):
     _ = config_conn
     _ = patch_open
     _ = patch_no_mqtt
-    global test
     assert asyncio.get_running_loop()
-    Inverter.class_init()
-    test = TestType.RD_TEST_0_BYTES
+    Proxy.class_init()
 
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
     ModbusTcp(asyncio.get_event_loop(), tim_restart= 0)
@@ -220,15 +311,76 @@ async def test_modbus_cnf3(config_conn, patch_no_mqtt, patch_open):
             test += 1
             if test == 1:
                 m.shutdown_started = False
-                m.reader.on_recv.set()
+                m.ifc._reader.on_recv.set()
                 await asyncio.sleep(0.1)
                 assert m.state == State.closed
                 await asyncio.sleep(0.1)
             else:
                 m.shutdown_started = True
-                m.reader.on_recv.set()
+                m.ifc._reader.on_recv.set()
                 del m
 
     assert 2 == test
     await asyncio.sleep(0.01)
     assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+
+@pytest.mark.asyncio
+async def test_mqtt_err(config_conn, patch_mqtt_err, patch_open):
+    _ = config_conn
+    _ = patch_open
+    _ = patch_mqtt_err
+    assert asyncio.get_running_loop()
+    Proxy.class_init()
+
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+    ModbusTcp(asyncio.get_event_loop(), tim_restart= 0)
+    await asyncio.sleep(0.01)
+    test = 0
+    for m in Message:
+        if (m.node_id == 'inv_2'):
+            assert Infos.stat['proxy']['Inverter_Cnt'] == 1
+            test += 1
+            if test == 1:
+                m.shutdown_started = False
+                m.ifc._reader.on_recv.set()
+                await asyncio.sleep(0.1)
+                assert m.state == State.closed
+                await asyncio.sleep(0.1)
+                await asyncio.sleep(0.1)
+            else:
+                m.shutdown_started = True
+                m.ifc._reader.on_recv.set()
+                del m
+
+    await asyncio.sleep(0.01)
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+
+@pytest.mark.asyncio
+async def test_mqtt_except(config_conn, patch_mqtt_except, patch_open):
+    _ = config_conn
+    _ = patch_open
+    _ = patch_mqtt_except
+    assert asyncio.get_running_loop()
+    Proxy.class_init()
+
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0
+    ModbusTcp(asyncio.get_event_loop(), tim_restart= 0)
+    await asyncio.sleep(0.01)
+    test = 0
+    for m in Message:
+        if (m.node_id == 'inv_2'):
+            assert Infos.stat['proxy']['Inverter_Cnt'] == 1
+            test += 1
+            if test == 1:
+                m.shutdown_started = False
+                m.ifc._reader.on_recv.set()
+                await asyncio.sleep(0.1)
+                assert m.state == State.closed
+                await asyncio.sleep(0.1)
+            else:
+                m.shutdown_started = True
+                m.ifc._reader.on_recv.set()
+                del m
+
+    await asyncio.sleep(0.01)
+    assert Infos.stat['proxy']['Inverter_Cnt'] == 0

app/tests/test_mqtt.py

@@ -5,12 +5,15 @@ import aiomqtt
 import logging
 
 from mock import patch, Mock
-from app.src.singleton import Singleton
-from app.src.mqtt import Mqtt
-from app.src.modbus import Modbus
-from app.src.gen3plus.solarman_v5 import SolarmanV5
-from app.src.config import Config
+from async_stream import AsyncIfcImpl
+from singleton import Singleton
+from mqtt import Mqtt
+from modbus import Modbus
+from gen3plus.solarman_v5 import SolarmanV5
+from cnf.config import Config
 
+NO_MOSQUITTO_TEST = False
+'''disable all tests with connections to test.mosquitto.org'''
 
 pytest_plugins = ('pytest_asyncio',)
 
@@ -44,7 +47,7 @@ def config_no_conn(test_port):
 
 @pytest.fixture
 def spy_at_cmd():
-    conn = SolarmanV5(server_side=True, client_mode= False)
+    conn = SolarmanV5(('test.local', 1234), server_side=True, client_mode= False, ifc=AsyncIfcImpl())
     conn.node_id = 'inv_2/'
     with patch.object(conn, 'send_at_cmd', wraps=conn.send_at_cmd) as wrapped_conn:
         yield wrapped_conn
@@ -52,7 +55,7 @@ def spy_at_cmd():
 
 @pytest.fixture
 def spy_modbus_cmd():
-    conn = SolarmanV5(server_side=True, client_mode= False)
+    conn = SolarmanV5(('test.local', 1234), server_side=True, client_mode= False, ifc=AsyncIfcImpl())
     conn.node_id = 'inv_1/'
     with patch.object(conn, 'send_modbus_cmd', wraps=conn.send_modbus_cmd) as wrapped_conn:
         yield wrapped_conn
@@ -60,7 +63,7 @@ def spy_modbus_cmd():
 
 @pytest.fixture
 def spy_modbus_cmd_client():
-    conn = SolarmanV5(server_side=False, client_mode= False)
+    conn = SolarmanV5(('test.local', 1234), server_side=False, client_mode= False, ifc=AsyncIfcImpl())
     conn.node_id = 'inv_1/'
     with patch.object(conn, 'send_modbus_cmd', wraps=conn.send_modbus_cmd) as wrapped_conn:
         yield wrapped_conn
@@ -68,23 +71,79 @@ def spy_modbus_cmd_client():
 
 def test_native_client(test_hostname, test_port):
     """Sanity check: Make sure the paho-mqtt client can connect to the test
-    MQTT server.
+    MQTT server. Otherwise the test set NO_MOSQUITTO_TEST to True and disable
+    all test cases which depends on the test.mosquitto.org server
     """
+    global NO_MOSQUITTO_TEST
+    if NO_MOSQUITTO_TEST:
+        pytest.skip('skipping, since Mosquitto is not reliable at the moment')
 
     import paho.mqtt.client as mqtt
     import threading
 
-    c = mqtt.Client()
+    c = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
     c.loop_start()
     try:
         # Just make sure the client connects successfully
         on_connect = threading.Event()
         c.on_connect = Mock(side_effect=lambda *_: on_connect.set())
         c.connect_async(test_hostname, test_port)
-        assert on_connect.wait(5)
+        if not on_connect.wait(3):
+            NO_MOSQUITTO_TEST = True  # skip all mosquitto tests
+            pytest.skip('skipping, since Mosquitto is not reliable at the moment')
     finally:
         c.loop_stop()
 
+@pytest.mark.asyncio
+async def test_mqtt_connection(config_mqtt_conn):
+    global NO_MOSQUITTO_TEST
+    if NO_MOSQUITTO_TEST:
+        pytest.skip('skipping, since Mosquitto is not reliable at the moment')
+
+    _ = config_mqtt_conn
+    assert asyncio.get_running_loop()
+
+    on_connect =  asyncio.Event()
+    async def cb():
+        on_connect.set()
+
+    try:
+        m = Mqtt(cb)
+        assert m.task
+        assert await asyncio.wait_for(on_connect.wait(), 5)
+        # await asyncio.sleep(1)
+        assert 0 == m.ha_restarts
+        await m.publish('homeassistant/status', 'online')
+    except TimeoutError:
+        assert False
+    finally:
+        await m.close()
+        await m.publish('homeassistant/status', 'online')
+
+@pytest.mark.asyncio
+async def test_ha_reconnect(config_mqtt_conn):
+    global NO_MOSQUITTO_TEST
+    if NO_MOSQUITTO_TEST:
+        pytest.skip('skipping, since Mosquitto is not reliable at the moment')
+
+    _ = config_mqtt_conn
+    on_connect =  asyncio.Event()
+    async def cb():
+        on_connect.set()
+
+    try:
+        m = Mqtt(cb)
+        msg = aiomqtt.Message(topic= 'homeassistant/status', payload= b'offline', qos= 0, retain = False, mid= 0, properties= None)
+        await m.dispatch_msg(msg)
+        assert not on_connect.is_set()
+
+        msg = aiomqtt.Message(topic= 'homeassistant/status', payload= b'online', qos= 0, retain = False, mid= 0, properties= None)
+        await m.dispatch_msg(msg)
+        assert on_connect.is_set()
+
+    finally:
+        await m.close()
+
 @pytest.mark.asyncio
 async def test_mqtt_no_config(config_no_conn):
     _ = config_no_conn
@@ -109,29 +168,6 @@ async def test_mqtt_no_config(config_no_conn):
     finally:
         await m.close()
 
-@pytest.mark.asyncio
-async def test_mqtt_connection(config_mqtt_conn):
-    _ = config_mqtt_conn
-    assert asyncio.get_running_loop()
-
-    on_connect =  asyncio.Event()
-    async def cb():
-        on_connect.set()
-
-    try:
-        m = Mqtt(cb)
-        assert m.task
-        assert await asyncio.wait_for(on_connect.wait(), 5)
-        # await asyncio.sleep(1)
-        assert 0 == m.ha_restarts
-        await m.publish('homeassistant/status', 'online')
-    except TimeoutError:
-        assert False
-    finally:
-        await m.close()
-        await m.publish('homeassistant/status', 'online')
-
-
 @pytest.mark.asyncio
 async def test_msg_dispatch(config_mqtt_conn, spy_modbus_cmd):
     _ = config_mqtt_conn
@@ -208,26 +244,6 @@ async def test_msg_ignore_client_conn(config_mqtt_conn, spy_modbus_cmd_client):
     finally:
         await m.close()
 
-@pytest.mark.asyncio
-async def test_ha_reconnect(config_mqtt_conn):
-    _ = config_mqtt_conn
-    on_connect =  asyncio.Event()
-    async def cb():
-        on_connect.set()
-
-    try:
-        m = Mqtt(cb)
-        msg = aiomqtt.Message(topic= 'homeassistant/status', payload= b'offline', qos= 0, retain = False, mid= 0, properties= None)
-        await m.dispatch_msg(msg)
-        assert not on_connect.is_set()
-
-        msg = aiomqtt.Message(topic= 'homeassistant/status', payload= b'online', qos= 0, retain = False, mid= 0, properties= None)
-        await m.dispatch_msg(msg)
-        assert on_connect.is_set()
-
-    finally:
-        await m.close()
-
 @pytest.mark.asyncio
 async def test_ignore_unknown_func(config_mqtt_conn):
     '''don't dispatch for unknwon function names'''

app/tests/test_proxy.py

@@ -5,11 +5,11 @@ import aiomqtt
 import logging
 
 from mock import patch, Mock
-from app.src.singleton import Singleton
-from app.src.inverter import Inverter
-from app.src.mqtt import Mqtt
-from app.src.gen3plus.solarman_v5 import SolarmanV5
-from app.src.config import Config
+from singleton import Singleton
+from proxy import Proxy
+from mqtt import Mqtt
+from gen3plus.solarman_v5 import SolarmanV5
+from cnf.config import Config
 
 
 pytest_plugins = ('pytest_asyncio',)
@@ -18,7 +18,7 @@ pytest_plugins = ('pytest_asyncio',)
 @pytest.fixture(scope="module", autouse=True)
 def module_init():
     def new_init(cls, cb_mqtt_is_up):
-        cb_mqtt_is_up()
+        pass  # empty test methos
 
     Singleton._instances.clear()
     with patch.object(Mqtt, '__init__', new_init):
@@ -63,12 +63,13 @@ def config_conn(test_hostname, test_port):
 async def test_inverter_cb(config_conn):
     _ = config_conn
 
-    with patch.object(Inverter, '_cb_mqtt_is_up', wraps=Inverter._cb_mqtt_is_up) as spy:
-        print('call Inverter.class_init')
-        Inverter.class_init()
-        assert 'homeassistant/' == Inverter.discovery_prfx
-        assert 'tsun/' == Inverter.entity_prfx
-        assert 'test_1/' == Inverter.proxy_node_id
+    with patch.object(Proxy, '_cb_mqtt_is_up', wraps=Proxy._cb_mqtt_is_up) as spy:
+        print('call Proxy.class_init')
+        Proxy.class_init()
+        assert 'homeassistant/' == Proxy.discovery_prfx
+        assert 'tsun/' == Proxy.entity_prfx
+        assert 'test_1/' == Proxy.proxy_node_id
+        await Proxy._cb_mqtt_is_up()
         spy.assert_called_once()
 
 @pytest.mark.asyncio
@@ -76,8 +77,8 @@ async def test_mqtt_is_up(config_conn):
     _ = config_conn
 
     with patch.object(Mqtt, 'publish') as spy:
-        Inverter.class_init()
-        await Inverter._cb_mqtt_is_up()
+        Proxy.class_init()
+        await Proxy._cb_mqtt_is_up()
         spy.assert_called()
 
 @pytest.mark.asyncio
@@ -85,6 +86,6 @@ async def test_mqtt_proxy_statt_invalid(config_conn):
     _ = config_conn
 
     with patch.object(Mqtt, 'publish') as spy:
-        Inverter.class_init()
-        await Inverter._async_publ_mqtt_proxy_stat('InValId_kEy')
+        Proxy.class_init()
+        await Proxy._async_publ_mqtt_proxy_stat('InValId_kEy')
         spy.assert_not_called()

app/tests/test_server.py

@@ -0,0 +1,24 @@
+# test_with_pytest.py
+import pytest
+import logging
+import os
+from mock import patch
+from server import get_log_level
+
+def test_get_log_level():
+
+    with patch.dict(os.environ, {'LOG_LVL': ''}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.INFO
+
+    with patch.dict(os.environ, {'LOG_LVL': 'DEBUG'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.DEBUG
+
+    with patch.dict(os.environ, {'LOG_LVL': 'WARN'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.WARNING
+
+    with patch.dict(os.environ, {'LOG_LVL': 'UNKNOWN'}):
+        log_lvl = get_log_level()
+        assert log_lvl == logging.INFO

app/tests/test_singleton.py

@@ -1,16 +1,16 @@
 # test_with_pytest.py
 import pytest
-from app.src.singleton import Singleton
+from singleton import Singleton
 
-class Test(metaclass=Singleton):
+class Example(metaclass=Singleton):
     def __init__(self):
         pass  # is a dummy test class
 
 def test_singleton_metaclass():
     Singleton._instances.clear()
-    a = Test()
+    a = Example()
     assert 1 == len(Singleton._instances)
-    b = Test()
+    b = Example()
     assert 1 == len(Singleton._instances)
     assert a is  b
     del a

app/tests/test_solarman.py

@@ -5,11 +5,12 @@ import asyncio
 import logging
 import random
 from math import isclose
-from app.src.gen3plus.solarman_v5 import SolarmanV5
-from app.src.config import Config
-from app.src.infos import Infos, Register
-from app.src.modbus import Modbus
-from app.src.messages import State, Message
+from async_stream import AsyncIfcImpl, StreamPtr
+from gen3plus.solarman_v5 import SolarmanV5, SolarmanBase
+from cnf.config import Config
+from infos import Infos, Register
+from modbus import Modbus
+from messages import State, Message
 
 
 pytest_plugins = ('pytest_asyncio',)
@@ -20,13 +21,6 @@ Infos.static_init()
 timestamp = int(time.time())  # 1712861197
 heartbeat = 60         
 
-class Writer():
-    def __init__(self):
-        self.sent_pdu = b''
-
-    def write(self, pdu: bytearray):
-        self.sent_pdu = pdu
-
 
 class Mqtt():
     def __init__(self):
@@ -38,14 +32,24 @@ class Mqtt():
         self.data = data
 
 
+class FakeIfc(AsyncIfcImpl):
+    def __init__(self):
+        super().__init__()
+        self.remote = StreamPtr(None)
+
+    async def create_remote(self):
+        await asyncio.sleep(0)
+
 class MemoryStream(SolarmanV5):
     def __init__(self, msg, chunks = (0,), server_side: bool = True):
-        super().__init__(server_side, client_mode=False)
+        _ifc = FakeIfc()
+        super().__init__(('test.local', 1234), _ifc, server_side, client_mode=False)
         if server_side:
             self.mb.timeout = 0.4   # overwrite for faster testing
         self.mb_first_timeout = 0.5
         self.mb_timeout = 0.5
-        self.writer = Writer()
+        self.sent_pdu = b''
+        self.ifc.tx_fifo.reg_trigger(self.write_cb)
         self.mqtt = Mqtt()
         self.__msg = msg
         self.__msg_len = len(msg)
@@ -64,6 +68,11 @@ class MemoryStream(SolarmanV5):
         self.data = ''
         self.msg_recvd = []
 
+    def write_cb(self):
+        if self.test_exception_async_write:
+            raise RuntimeError("Peer closed.")
+        self.sent_pdu = self.ifc.tx_fifo.get()
+
     def _timestamp(self):
         return timestamp
     
@@ -86,28 +95,24 @@ class MemoryStream(SolarmanV5):
                 chunk_len = self.__chunks[self.__chunk_idx]
                 self.__chunk_idx += 1
                 if chunk_len!=0:
-                    self._recv_buffer += self.__msg[self.__offs:chunk_len]
+                    self.ifc.rx_fifo += self.__msg[self.__offs:chunk_len]
                     copied_bytes = chunk_len - self.__offs
                     self.__offs = chunk_len
                 else:
-                    self._recv_buffer += self.__msg[self.__offs:]
+                    self.ifc.rx_fifo += self.__msg[self.__offs:]
                     copied_bytes = self.__msg_len - self.__offs
                     self.__offs = self.__msg_len
         except Exception:
             pass   # ignore exceptions here
         return copied_bytes
     
-    async def async_write(self, headline=''):
-        if self.test_exception_async_write:
-            raise RuntimeError("Peer closed.")
-
     def createClientStream(self, msg, chunks = (0,)):
         c = MemoryStream(msg, chunks, False)
-        self.remote_stream = c
-        c. remote_stream = self
+        self.ifc.remote.stream = c
+        c.ifc.remote.stream = self
         return c
 
-    def _SolarmanV5__flush_recv_msg(self) -> None:
+    def _SolarmanBase__flush_recv_msg(self) -> None:
         self.msg_recvd.append(
             {
                 'control': self.control,
@@ -115,7 +120,7 @@ class MemoryStream(SolarmanV5):
                 'data_len': self.data_len
             }
         )
-        super()._SolarmanV5__flush_recv_msg()
+        super()._SolarmanBase__flush_recv_msg()
         self.msg_count += 1
 
 
@@ -184,6 +189,35 @@ def device_rsp_msg():  # 0x1110
     msg += b'\x15'
     return msg
 
+@pytest.fixture
+def device_ind_msg2(): # 0x4110
+    msg  = b'\xa5\xd4\x00\x10\x41\x02\x03' +get_sn()  +b'\x02\xba\xd2\x00\x00'
+    msg += b'\x19\x00\x00\x00\x00\x00\x00\x00\x05\x3c\x78\x01\x64\x01\x4c\x53'
+    msg += b'\x57\x35\x42\x4c\x45\x5f\x31\x37\x5f\x30\x32\x42\x30\x5f\x31\x2e'
+    msg += b'\x30\x35\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x40\x2a\x8f\x4f\x51\x54\x31\x39\x32\x2e'
+    msg += b'\x31\x36\x38\x2e\x38\x30\x2e\x34\x39\x00\x00\x00\x0f\x00\x01\xb0'
+    msg += b'\x02\x0f\x00\xff\x56\x31\x2e\x31\x2e\x30\x30\x2e\x30\x42\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\xfe\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x41\x6c\x6c\x69\x75\x73\x2d\x48\x6f'
+    msg += b'\x6d\x65\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' 
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
+@pytest.fixture
+def device_rsp_msg2():  # 0x1110
+    msg  = b'\xa5\x0a\x00\x10\x11\x03\x03' +get_sn()  +b'\x02\x01'
+    msg += total()  
+    msg += hb()
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
 @pytest.fixture
 def invalid_start_byte(): # 0x4110
     msg  = b'\xa4\xd4\x00\x10\x41\x00\x01' +get_sn()  +b'\x02\xba\xd2\x00\x00'
@@ -651,6 +685,7 @@ def config_tsun_inv1():
     Config.act_config = {'solarman':{'enabled': True},'inverters':{'Y170000000000001':{'monitor_sn': 2070233889, 'node_id':'inv1', 'modbus_polling': True, 'suggested_area':'roof', 'sensor_list': 688}}}
 
 def test_read_message(device_ind_msg):
+    Config.act_config = {'solarman':{'enabled': True}}
     m = MemoryStream(device_ind_msg, (0,))
     m.read()         # read complete msg, and dispatch msg
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
@@ -661,9 +696,9 @@ def test_read_message(device_ind_msg):
     assert m.control == 0x4110
     assert str(m.seq) == '01:00'
     assert m.data_len == 0xd4
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -682,9 +717,9 @@ def test_invalid_start_byte(invalid_start_byte, device_ind_msg):
     assert m.control == 0x4110
     assert str(m.seq) == '01:00'
     assert m.data_len == 0xd4
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1
     m.close()
 
@@ -702,9 +737,9 @@ def test_invalid_stop_byte(invalid_stop_byte):
     assert m.control == 0x4110
     assert str(m.seq) == '01:00'
     assert m.data_len == 0xd4
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1
     m.close()
 
@@ -727,9 +762,9 @@ def test_invalid_stop_byte2(invalid_stop_byte, device_ind_msg):
     assert m.msg_recvd[1]['data_len']==0xd4
 
     assert m.unique_id == None
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1
     m.close()
 
@@ -749,9 +784,9 @@ def test_invalid_stop_start_byte(invalid_stop_byte, invalid_start_byte):
     assert m.control == 0x4110
     assert str(m.seq) == '01:00'
     assert m.data_len == 0xd4
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1
     m.close()
 
@@ -773,9 +808,9 @@ def test_invalid_checksum(invalid_checksum, device_ind_msg):
     assert m.msg_recvd[1]['control']==0x4110
     assert m.msg_recvd[1]['seq']=='01:00'
     assert m.msg_recvd[1]['data_len']==0xd4
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1
     m.close()
 
@@ -795,8 +830,8 @@ def test_read_message_twice(config_no_tsun_inv1, device_ind_msg, device_rsp_msg)
     assert m.msg_recvd[1]['control']==0x4110
     assert m.msg_recvd[1]['seq']=='01:01'
     assert m.msg_recvd[1]['data_len']==0xd4
-    assert m._send_buffer==device_rsp_msg+device_rsp_msg
-    assert m._forward_buffer==b''
+    assert m.ifc.tx_fifo.get()==device_rsp_msg+device_rsp_msg
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -867,12 +902,11 @@ def test_read_two_messages(config_tsun_allow_all, device_ind_msg, device_rsp_msg
     assert m.msg_recvd[1]['data_len']==0x199
     assert '02b0' == m.db.get_db_value(Register.SENSOR_LIST, None)
     assert 0x02b0 == m.sensor_list
-    assert m._forward_buffer==device_ind_msg+inverter_ind_msg
-    assert m._send_buffer==device_rsp_msg+inverter_rsp_msg
+    assert m.ifc.fwd_fifo.get()==device_ind_msg+inverter_ind_msg
+    assert m.ifc.tx_fifo.get()==device_rsp_msg+inverter_rsp_msg
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
     m._init_new_client_conn()
-    assert m._send_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
     m.close()
 
 def test_read_two_messages2(config_tsun_allow_all, inverter_ind_msg, inverter_ind_msg_81, inverter_rsp_msg, inverter_rsp_msg_81):
@@ -893,12 +927,58 @@ def test_read_two_messages2(config_tsun_allow_all, inverter_ind_msg, inverter_in
     assert m.msg_recvd[1]['seq']=='03:03'
     assert m.msg_recvd[1]['data_len']==0x199
     assert m.time_ofs == 0x33e447a0
-    assert m._forward_buffer==inverter_ind_msg+inverter_ind_msg_81
-    assert m._send_buffer==inverter_rsp_msg+inverter_rsp_msg_81
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg+inverter_ind_msg_81
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg+inverter_rsp_msg_81
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
     m._init_new_client_conn()
-    assert m._send_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
+    m.close()
+
+def test_read_two_messages3(config_tsun_allow_all, device_ind_msg2, device_rsp_msg2, inverter_ind_msg, inverter_rsp_msg):
+    # test device message received after the inverter masg
+    _ = config_tsun_allow_all
+    m = MemoryStream(inverter_ind_msg, (0,))
+    m.append_msg(device_ind_msg2)
+    assert 0 == m.sensor_list
+    m._init_new_client_conn()
+    m.read()         # read complete msg, and dispatch msg
+    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 2
+    assert m.header_len==11
+    assert m.snr == 2070233889
+    assert m.unique_id == '2070233889'
+    assert m.msg_recvd[0]['control']==0x4210
+    assert m.msg_recvd[0]['seq']=='02:02'
+    assert m.msg_recvd[0]['data_len']==0x199
+    assert m.msg_recvd[1]['control']==0x4110
+    assert m.msg_recvd[1]['seq']=='03:03'
+    assert m.msg_recvd[1]['data_len']==0xd4
+    assert '02b0' == m.db.get_db_value(Register.SENSOR_LIST, None)
+    assert 0x02b0 == m.sensor_list
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg+device_ind_msg2
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg+device_rsp_msg2
+
+    m._init_new_client_conn()
+    assert m.ifc.tx_fifo.get()==b''
+    m.close()
+
+def test_unkown_frame_code(config_tsun_inv1, inverter_ind_msg_81, inverter_rsp_msg_81):
+    _ = config_tsun_inv1
+    m = MemoryStream(inverter_ind_msg_81, (0,))
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.header_len==11
+    assert m.snr == 2070233889
+    assert m.unique_id == '2070233889'
+    assert m.control == 0x4210
+    assert str(m.seq) == '03:03'
+    assert m.data_len == 0x199
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg_81
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg_81
+    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
 def test_unkown_message(config_tsun_inv1, unknown_msg):
@@ -913,9 +993,9 @@ def test_unkown_message(config_tsun_inv1, unknown_msg):
     assert m.control == 0x5110
     assert str(m.seq) == '84:10'
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==unknown_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==unknown_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -931,9 +1011,9 @@ def test_device_rsp(config_tsun_inv1, device_rsp_msg):
     assert m.control == 0x1110
     assert str(m.seq) == '01:01'
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -949,9 +1029,9 @@ def test_inverter_rsp(config_tsun_inv1, inverter_rsp_msg):
     assert m.control == 0x1210
     assert str(m.seq) == '02:02'
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -966,9 +1046,9 @@ def test_heartbeat_ind(config_tsun_inv1, heartbeat_ind_msg, heartbeat_rsp_msg):
     assert m.control == 0x4710
     assert str(m.seq) == '84:11'  # value after sending response
     assert m.data_len == 0x01
-    assert m._recv_buffer==b''
-    assert m._send_buffer==heartbeat_rsp_msg
-    assert m._forward_buffer==heartbeat_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==heartbeat_rsp_msg
+    assert m.ifc.fwd_fifo.get()==heartbeat_ind_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -984,9 +1064,9 @@ def test_heartbeat_ind2(config_tsun_inv1, heartbeat_ind_msg, heartbeat_rsp_msg):
     assert m.control == 0x4710
     assert str(m.seq) == '84:11'  # value after sending response
     assert m.data_len == 0x01
-    assert m._recv_buffer==b''
-    assert m._send_buffer==heartbeat_rsp_msg
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==heartbeat_rsp_msg
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -1002,9 +1082,9 @@ def test_heartbeat_rsp(config_tsun_inv1, heartbeat_rsp_msg):
     assert m.control == 0x1710
     assert str(m.seq) == '11:84'  # value after sending response
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -1019,15 +1099,15 @@ def test_sync_start_ind(config_tsun_inv1, sync_start_ind_msg, sync_start_rsp_msg
     assert m.control == 0x4310
     assert str(m.seq) == '0d:0d'  # value after sending response
     assert m.data_len == 47
-    assert m._recv_buffer==b''
-    assert m._send_buffer==sync_start_rsp_msg
-    assert m._forward_buffer==sync_start_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==sync_start_rsp_msg
+    assert m.ifc.fwd_fifo.peek()==sync_start_ind_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
 
     m.seq.server_side = False  # simulate forawding to TSUN cloud
-    m._update_header(m._forward_buffer)
+    m._SolarmanBase__update_header(m.ifc.fwd_fifo.peek())
     assert str(m.seq) == '0d:0e'  # value after forwarding indication
-    assert m._forward_buffer==sync_start_fwd_msg
+    assert m.ifc.fwd_fifo.get()==sync_start_fwd_msg
 
     m.close()
 
@@ -1043,9 +1123,9 @@ def test_sync_start_rsp(config_tsun_inv1, sync_start_rsp_msg):
     assert m.control == 0x1310
     assert str(m.seq) == '0d:0d'  # value after sending response
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -1060,9 +1140,9 @@ def test_sync_end_ind(config_tsun_inv1, sync_end_ind_msg, sync_end_rsp_msg):
     assert m.control == 0x4810
     assert str(m.seq) == '07:07'  # value after sending response
     assert m.data_len == 60
-    assert m._recv_buffer==b''
-    assert m._send_buffer==sync_end_rsp_msg
-    assert m._forward_buffer==sync_end_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==sync_end_rsp_msg
+    assert m.ifc.fwd_fifo.get()==sync_end_ind_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -1078,9 +1158,9 @@ def test_sync_end_rsp(config_tsun_inv1, sync_end_rsp_msg):
     assert m.control == 0x1810
     assert str(m.seq) == '07:07'  # value after sending response
     assert m.data_len == 0x0a
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     m.close()
 
@@ -1098,9 +1178,9 @@ def test_build_modell_600(config_tsun_allow_all, inverter_ind_msg):
     assert '02b0' == m.db.get_db_value(Register.SENSOR_LIST, None)
     assert 0 == m.sensor_list   # must not been set by an inverter data ind
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
+    m.ifc.tx_clear() # clear send buffer for next test    
     m._init_new_client_conn()
-    assert m._send_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
     m.close()
 
 def test_build_modell_1600(config_tsun_allow_all, inverter_ind_msg1600):
@@ -1164,9 +1244,9 @@ def test_build_logger_modell(config_tsun_allow_all, device_ind_msg):
 
 def test_msg_iterator():
     Message._registry.clear()
-    m1 = SolarmanV5(server_side=True, client_mode=False)
-    m2 = SolarmanV5(server_side=True, client_mode=False)
-    m3 = SolarmanV5(server_side=True, client_mode=False)
+    m1 = SolarmanV5(('test1.local', 1234), ifc=AsyncIfcImpl(), server_side=True, client_mode=False)
+    m2 = SolarmanV5(('test2.local', 1234), ifc=AsyncIfcImpl(), server_side=True, client_mode=False)
+    m3 = SolarmanV5(('test3.local', 1234), ifc=AsyncIfcImpl(), server_side=True, client_mode=False)
     m3.close()
     del m3
     test1 = 0
@@ -1184,7 +1264,7 @@ def test_msg_iterator():
     assert test2 == 1
 
 def test_proxy_counter():
-    m = SolarmanV5(server_side=True, client_mode=False)
+    m = SolarmanV5(('test.local', 1234), ifc=AsyncIfcImpl(), server_side=True, client_mode=False)
     assert m.new_data == {}
     m.db.stat['proxy']['Unknown_Msg'] = 0
     Infos.new_stat_data['proxy'] =  False
@@ -1208,16 +1288,14 @@ async def test_msg_build_modbus_req(config_tsun_inv1, device_ind_msg, device_rsp
     m.read()
     assert m.control == 0x4110
     assert str(m.seq) == '01:01'
-    assert m._send_buffer==device_rsp_msg
-    assert m._forward_buffer==device_ind_msg
+    assert m.ifc.tx_fifo.get()==device_rsp_msg
+    assert m.ifc.fwd_fifo.get()==device_ind_msg
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_modbus_cmd(Modbus.WRITE_SINGLE_REG, 0x2008, 0, logging.DEBUG)
     assert 0 == m.send_msg_ofs
-    assert m._forward_buffer == b''
-    assert m.writer.sent_pdu == b'' # modbus command must be ignore, cause connection is still not up
-    assert m._send_buffer == b''    # modbus command must be ignore, cause connection is still not up
+    assert m.ifc.fwd_fifo.get() == b''
+    assert m.sent_pdu == b'' # modbus command must be ignore, cause connection is still not up
+    assert m.ifc.tx_fifo.get() == b''    # modbus command must be ignore, cause connection is still not up
 
     m.append_msg(inverter_ind_msg)
     m.read()
@@ -1227,24 +1305,15 @@ async def test_msg_build_modbus_req(config_tsun_inv1, device_ind_msg, device_rsp
     assert m.msg_recvd[0]['seq']=='01:01'
     assert m.msg_recvd[1]['control']==0x4210
     assert m.msg_recvd[1]['seq']=='02:02'
-    assert m._recv_buffer==b''
-    assert m._send_buffer==inverter_rsp_msg
-    assert m._forward_buffer==inverter_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_modbus_cmd(Modbus.WRITE_SINGLE_REG, 0x2008, 0, logging.DEBUG)
     assert 0 == m.send_msg_ofs
-    assert m._forward_buffer == b''
-    assert m.writer.sent_pdu == msg_modbus_cmd
-    assert m._send_buffer == b''
-
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m.test_exception_async_write = True
-    await m.send_modbus_cmd(Modbus.WRITE_SINGLE_REG, 0x2008, 0, logging.DEBUG)
-    assert 0 == m.send_msg_ofs
-    assert m._forward_buffer == b''
-    assert m._send_buffer == b''
+    assert m.ifc.fwd_fifo.get() == b''
+    assert m.sent_pdu == msg_modbus_cmd
+    assert m.ifc.tx_fifo.get()== b''
     m.close()
 
 @pytest.mark.asyncio
@@ -1254,14 +1323,13 @@ async def test_at_cmd(config_tsun_allow_all, device_ind_msg, device_rsp_msg, inv
     m.read()   # read device ind
     assert m.control == 0x4110
     assert str(m.seq) == '01:01'
-    assert m._send_buffer==device_rsp_msg
-    assert m._forward_buffer==device_ind_msg
+    assert m.ifc.tx_fifo.get()==device_rsp_msg
+    assert m.ifc.fwd_fifo.get()==device_ind_msg
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_at_cmd('AT+TIME=214028,1,60,120')
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.sent_pdu == b''
     assert str(m.seq) == '01:01'
     assert m.mqtt.key == ''
     assert m.mqtt.data == ""
@@ -1270,34 +1338,37 @@ async def test_at_cmd(config_tsun_allow_all, device_ind_msg, device_rsp_msg, inv
     m.read() # read inverter ind
     assert m.control == 0x4210
     assert str(m.seq) == '02:02'
-    assert m._send_buffer==inverter_rsp_msg
-    assert m._forward_buffer==inverter_ind_msg
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg
     
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_at_cmd('AT+TIME=214028,1,60,120')
-    assert m._send_buffer==at_command_ind_msg
-    assert m._forward_buffer==b''
+    assert m.ifc.fwd_fifo.get() == b''
+    assert m.ifc.tx_fifo.get()== b''
+    assert m.sent_pdu == at_command_ind_msg
+    m.sent_pdu = bytearray()
+
     assert str(m.seq) == '02:03'
     assert m.mqtt.key == ''
     assert m.mqtt.data == ""
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
     m.append_msg(at_command_rsp_msg)
     m.read() # read at resp
     assert m.control == 0x1510
     assert str(m.seq) == '03:03'
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.key == 'at_resp'
     assert m.data == "+ok"
 
+    m.sent_pdu = bytearray()
     m.test_exception_async_write = True
     await m.send_at_cmd('AT+TIME=214028,1,60,120')
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.sent_pdu == b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.sent_pdu == b''
     assert str(m.seq) == '03:04'
     assert m.forward_at_cmd_resp == False
     assert m.mqtt.key == ''
@@ -1311,14 +1382,12 @@ async def test_at_cmd_blocked(config_tsun_allow_all, device_ind_msg, device_rsp_
     m.read()
     assert m.control == 0x4110
     assert str(m.seq) == '01:01'
-    assert m._send_buffer==device_rsp_msg
-    assert m._forward_buffer==device_ind_msg
+    assert m.ifc.tx_fifo.get()==device_rsp_msg
+    assert m.ifc.fwd_fifo.get()==device_ind_msg
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_at_cmd('AT+WEBU')
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert str(m.seq) == '01:01'
     assert m.mqtt.key == ''
     assert m.mqtt.data == ""
@@ -1327,16 +1396,14 @@ async def test_at_cmd_blocked(config_tsun_allow_all, device_ind_msg, device_rsp_
     m.read()
     assert m.control == 0x4210
     assert str(m.seq) == '02:02'
-    assert m._recv_buffer==b''
-    assert m._send_buffer==inverter_rsp_msg
-    assert m._forward_buffer==inverter_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==inverter_rsp_msg
+    assert m.ifc.fwd_fifo.get()==inverter_ind_msg
     
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m._forward_buffer = bytearray(0) # clear send buffer for next test    
     await m.send_at_cmd('AT+WEBU')
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert str(m.seq) == '02:02'
     assert m.forward_at_cmd_resp == False
     assert m.mqtt.key == 'at_resp'
@@ -1358,9 +1425,9 @@ def test_at_cmd_ind(config_tsun_inv1, at_command_ind_msg):
     assert m.control == 0x4510
     assert str(m.seq) == '03:02'
     assert m.data_len == 39
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==at_command_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==at_command_ind_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 1
     assert m.db.stat['proxy']['AT_Command_Blocked'] == 0
@@ -1382,9 +1449,9 @@ def test_at_cmd_ind_block(config_tsun_inv1, at_command_ind_msg_block):
     assert m.control == 0x4510
     assert str(m.seq) == '03:02'
     assert m.data_len == 23
-    assert m._recv_buffer==b''
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==b''
+    assert m.ifc.fwd_fifo.get()==b''
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['AT_Command_Blocked'] == 1
@@ -1404,8 +1471,8 @@ def test_msg_at_command_rsp1(config_tsun_inv1, at_command_rsp_msg):
     assert str(m.seq) == '03:03'
     assert m.header_len==11
     assert m.data_len==17
-    assert m._forward_buffer==at_command_rsp_msg
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==at_command_rsp_msg
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
@@ -1423,8 +1490,8 @@ def test_msg_at_command_rsp2(config_tsun_inv1, at_command_rsp_msg):
     assert str(m.seq) == '03:03'
     assert m.header_len==11
     assert m.data_len==17
-    assert m._forward_buffer==b''
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
@@ -1448,9 +1515,9 @@ def test_msg_modbus_req(config_tsun_inv1, msg_modbus_cmd, msg_modbus_cmd_fwd):
     assert str(c.seq) == '03:02'
     assert c.header_len==11
     assert c.data_len==23
-    assert c._forward_buffer==b''
-    assert c._send_buffer==b''
-    assert m.writer.sent_pdu == msg_modbus_cmd_fwd
+    assert c.ifc.fwd_fifo.get()==b''
+    assert c.ifc.tx_fifo.get()==b''
+    assert m.sent_pdu == msg_modbus_cmd_fwd
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 1
@@ -1475,9 +1542,9 @@ def test_msg_modbus_req2(config_tsun_inv1, msg_modbus_cmd_crc_err):
     assert str(c.seq) == '03:02'
     assert c.header_len==11
     assert c.data_len==23
-    assert c._forward_buffer==b''
-    assert c._send_buffer==b''
-    assert m.writer.sent_pdu==b''
+    assert c.ifc.fwd_fifo.get()==b''
+    assert c.ifc.tx_fifo.get()==b''
+    assert m.sent_pdu==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
@@ -1498,8 +1565,8 @@ def test_msg_unknown_cmd_req(config_tsun_inv1, msg_unknown_cmd):
     assert str(m.seq) == '03:02'
     assert m.header_len==11
     assert m.data_len==23
-    assert m._forward_buffer==msg_unknown_cmd
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==msg_unknown_cmd
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
@@ -1519,8 +1586,8 @@ def test_msg_modbus_rsp1(config_tsun_inv1, msg_modbus_rsp):
     assert str(m.seq) == '03:03'
     assert m.header_len==11
     assert m.data_len==59
-    assert m._forward_buffer==b''
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
@@ -1543,21 +1610,20 @@ def test_msg_modbus_rsp2(config_tsun_inv1, msg_modbus_rsp):
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.mb.err == 0
     assert m.msg_count == 1
-    assert m._forward_buffer==msg_modbus_rsp
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==msg_modbus_rsp
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.get_db_value(Register.VERSION) == 'V4.0.10'
     assert m.new_data['inverter'] == True
     m.new_data['inverter'] = False
 
     m.mb.req_pend = True
-    m._forward_buffer = bytearray()
     m.append_msg(msg_modbus_rsp)
     m.read()         # read complete msg, and dispatch msg
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.mb.err == 0
     assert m.msg_count == 2
-    assert m._forward_buffer==msg_modbus_rsp
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==msg_modbus_rsp
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.get_db_value(Register.VERSION) == 'V4.0.10'
     assert m.new_data['inverter'] == False
 
@@ -1581,20 +1647,19 @@ def test_msg_modbus_rsp3(config_tsun_inv1, msg_modbus_rsp):
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.mb.err == 0
     assert m.msg_count == 1
-    assert m._forward_buffer==msg_modbus_rsp
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==msg_modbus_rsp
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.get_db_value(Register.VERSION) == 'V4.0.10'
     assert m.new_data['inverter'] == True
     m.new_data['inverter'] = False
 
-    m._forward_buffer = bytearray()
     m.append_msg(msg_modbus_rsp)
     m.read()         # read complete msg, and dispatch msg
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.mb.err == 5
     assert m.msg_count == 2
-    assert m._forward_buffer==b''
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.get_db_value(Register.VERSION) == 'V4.0.10'
     assert m.new_data['inverter'] == False
 
@@ -1612,8 +1677,8 @@ def test_msg_unknown_rsp(config_tsun_inv1, msg_unknown_cmd_rsp):
     assert str(m.seq) == '03:03'
     assert m.header_len==11
     assert m.data_len==59
-    assert m._forward_buffer==msg_unknown_cmd_rsp
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==msg_unknown_cmd_rsp
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
@@ -1626,8 +1691,8 @@ def test_msg_modbus_invalid(config_tsun_inv1, msg_modbus_invalid):
     m.read()         # read complete msg, and dispatch msg
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.msg_count == 1
-    assert m._forward_buffer==b''
-    assert m._send_buffer==b''
+    assert m.ifc.fwd_fifo.get()==b''
+    assert m.ifc.tx_fifo.get()==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
@@ -1649,8 +1714,8 @@ def test_msg_modbus_fragment(config_tsun_inv1, msg_modbus_rsp):
     m.read()         # read complete msg, and dispatch msg
     assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
     assert m.msg_count == 1
-    assert m._forward_buffer==msg_modbus_rsp
-    assert m._send_buffer == b''
+    assert m.ifc.fwd_fifo.get()==msg_modbus_rsp
+    assert m.ifc.tx_fifo.get()== b''
     assert m.mb.err == 0
     assert m.modbus_elms == 20-1  # register 0x300d is unknown, so one value can't be mapped
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
@@ -1673,28 +1738,27 @@ async def test_modbus_polling(config_tsun_inv1, heartbeat_ind_msg, heartbeat_rsp
     assert m.control == 0x4710
     assert str(m.seq) == '84:11'  # value after sending response
     assert m.data_len == 0x01
-    assert m._recv_buffer==b''
-    assert m._send_buffer==heartbeat_rsp_msg
-    assert m._forward_buffer==heartbeat_ind_msg
+    assert m.ifc.rx_get()==b''
+    assert m.ifc.tx_fifo.get()==heartbeat_rsp_msg
+    assert m.ifc.fwd_fifo.get()==heartbeat_ind_msg
     assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
 
-    m._send_buffer = bytearray(0) # clear send buffer for next test
     assert m.state == State.up
     assert isclose(m.mb_timeout, 0.5)
     assert next(m.mb_timer.exp_count) == 0
     
     await asyncio.sleep(0.5)
-    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x12\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x86\x15')
-    assert m._send_buffer==b''
+    assert m.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x12\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x86\x15')
+    assert m.ifc.tx_fifo.get()==b''
     
     await asyncio.sleep(0.5)
-    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x13\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x87\x15')
-    assert m._send_buffer==b''
+    assert m.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x13\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x87\x15')
+    assert m.ifc.tx_fifo.get()==b''
     m.state = State.closed
-    m.writer.sent_pdu = bytearray()
+    m.sent_pdu = bytearray()
     await asyncio.sleep(0.5)
-    assert m.writer.sent_pdu==bytearray(b'')
-    assert m._send_buffer==b''
+    assert m.sent_pdu==bytearray(b'')
+    assert m.ifc.tx_fifo.get()==b''
     assert next(m.mb_timer.exp_count) == 4
     m.close()
 
@@ -1707,8 +1771,8 @@ async def test_start_client_mode(config_tsun_inv1, str_test_ip):
     assert m.no_forwarding == False
     assert m.mb_timer.tim == None
     assert asyncio.get_running_loop() == m.mb_timer.loop
-    await m.send_start_cmd(get_sn_int(), str_test_ip, m.mb_first_timeout)
-    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x01\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf1\x15')
+    await m.send_start_cmd(get_sn_int(), str_test_ip, False, m.mb_first_timeout)
+    assert m.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x01\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf1\x15')
     assert m.db.get_db_value(Register.IP_ADDRESS) == str_test_ip
     assert isclose(m.db.get_db_value(Register.POLLING_INTERVAL), 0.5)
     assert m.db.get_db_value(Register.HEARTBEAT_INTERVAL) == 120
@@ -1716,16 +1780,56 @@ async def test_start_client_mode(config_tsun_inv1, str_test_ip):
     assert m.state == State.up
     assert m.no_forwarding == True
 
-    assert m._send_buffer==b''
+    assert m.ifc.tx_fifo.get()==b''
     assert isclose(m.mb_timeout, 0.5)
     assert next(m.mb_timer.exp_count) == 0
     
     await asyncio.sleep(0.5)
-    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x02\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf2\x15')
-    assert m._send_buffer==b''
+    assert m.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x02\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf2\x15')
+    assert m.ifc.tx_fifo.get()==b''
     
     await asyncio.sleep(0.5)
-    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x03\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf3\x15')
-    assert m._send_buffer==b''
+    assert m.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x03\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf3\x15')
+    assert m.ifc.tx_fifo.get()==b''
     assert next(m.mb_timer.exp_count) == 3
     m.close()
+
+def test_timeout(config_tsun_inv1):
+    _ = config_tsun_inv1
+    m = MemoryStream(b'')
+    assert m.state == State.init
+    assert SolarmanV5.MAX_START_TIME == m._timeout()
+    m.state = State.up
+    m.modbus_polling = True
+    assert SolarmanV5.MAX_INV_IDLE_TIME == m._timeout()
+    m.modbus_polling = False
+    assert SolarmanV5.MAX_DEF_IDLE_TIME == m._timeout()
+    m.state = State.closed
+    m.close()
+
+def test_fnc_dispatch():
+    def msg():
+        return
+    
+    _ = config_tsun_inv1
+    m = MemoryStream(b'')
+    m.switch[1] = msg
+    m.switch[2] = "msg"
+
+    _obj, _str = m.get_fnc_handler(1)
+    assert _obj == msg
+    assert _str == "'msg'"
+
+    _obj, _str = m.get_fnc_handler(2)
+    assert _obj == m.msg_unknown
+    assert _str == "'msg'"
+
+    _obj, _str = m.get_fnc_handler(3)
+    assert _obj == m.msg_unknown
+    assert _str == "'msg_unknown'"
+
+def test_timestamp():
+    m = MemoryStream(b'')
+    ts = m._timestamp()
+    ts_emu = m._emu_timestamp()
+    assert ts == ts_emu + 24*60*60

app/tests/test_solarman_emu.py

@@ -0,0 +1,233 @@
+import pytest
+import asyncio
+
+from async_stream import AsyncIfcImpl, StreamPtr
+from gen3plus.solarman_v5 import SolarmanV5, SolarmanBase
+from gen3plus.solarman_emu import SolarmanEmu
+from infos import Infos, Register
+
+from test_solarman import FakeIfc, MemoryStream, get_sn_int, get_sn, correct_checksum, config_tsun_inv1, msg_modbus_rsp
+from test_infos_g3p import str_test_ip, bytes_test_ip
+
+timestamp = 0x3224c8bc
+
+class InvStream(MemoryStream):
+    def __init__(self, msg=b''):
+        super().__init__(msg)
+
+    def _emu_timestamp(self):
+        return timestamp
+
+class CldStream(SolarmanEmu):
+    def __init__(self, inv: InvStream):
+        _ifc = FakeIfc()
+        _ifc.remote.stream = inv
+        super().__init__(('test.local', 1234), _ifc, server_side=False, client_mode=False)
+        self.__msg = b''
+        self.__msg_len = 0
+        self.__offs = 0
+        self.msg_count = 0
+        self.msg_recvd = []
+
+    def _emu_timestamp(self):
+        return timestamp
+    
+    def append_msg(self, msg):
+        self.__msg += msg
+        self.__msg_len += len(msg)    
+
+    def _read(self) -> int:
+        copied_bytes = 0
+        try:    
+            if (self.__offs < self.__msg_len):
+                self.ifc.rx_fifo += self.__msg[self.__offs:]
+                copied_bytes = self.__msg_len - self.__offs
+                self.__offs = self.__msg_len
+        except Exception:
+            pass   # ignore exceptions here
+        return copied_bytes
+
+    def _SolarmanBase__flush_recv_msg(self) -> None:
+        self.msg_recvd.append(
+            {
+                'control': self.control,
+                'seq': str(self.seq),
+                'data_len': self.data_len
+            }
+        )
+        super()._SolarmanBase__flush_recv_msg()
+        self.msg_count += 1
+
+@pytest.fixture
+def device_ind_msg(bytes_test_ip): # 0x4110
+    msg  = b'\xa5\xd4\x00\x10\x41\x00\x01' +get_sn()  +b'\x02\xbc\xc8\x24\x32'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x05\x3c\x78\x01\x00\x01\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' + bytes_test_ip
+    msg += b'\x0f\x00\x01\xb0'
+    msg += b'\x02\x0f\x00\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\xfe\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
+@pytest.fixture
+def inverter_ind_msg():  # 0x4210
+    msg  = b'\xa5\x99\x01\x10\x42\x00\x01' +get_sn()  +b'\x01\xb0\x02\xbc\xc8'
+    msg += b'\x24\x32\x3c\x00\x00\x00\xa0\x47\xe4\x33\x01\x00\x03\x08\x00\x00'
+    msg += b'\x59\x31\x37\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x31'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x01\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x40\x10\x08\xc8\x00\x49\x13\x8d\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00'
+    msg += b'\x04\x00\x00\x01\xff\xff\x00\x01\x00\x06\x00\x68\x00\x68\x05\x00'
+    msg += b'\x09\xcd\x07\xb6\x13\x9c\x13\x24\x00\x01\x07\xae\x04\x0f\x00\x41'
+    msg += b'\x00\x0f\x0a\x64\x0a\x64\x00\x06\x00\x06\x09\xf6\x12\x8c\x12\x8c'
+    msg += b'\x00\x10\x00\x10\x14\x52\x14\x52\x00\x10\x00\x10\x01\x51\x00\x05'
+    msg += b'\x00\x00\x00\x01\x13\x9c\x0f\xa0\x00\x4e\x00\x66\x03\xe8\x04\x00'
+    msg += b'\x09\xce\x07\xa8\x13\x9c\x13\x26\x00\x00\x00\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x04\x00\x04\x00\x00\x00\x00\x00\xff\xff\x00\x00'
+    msg += b'\x00\x00\x00\x00'
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
+@pytest.fixture
+def inverter_rsp_msg():  # 0x1210
+    msg  = b'\xa5\x0a\x00\x10\x12\x02\02' +get_sn()  +b'\x01\x01'
+    msg += b'\x00\x00\x00\x00'
+    msg += b'\x3c\x00\x00\x00'
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
+@pytest.fixture
+def heartbeat_ind():
+    msg  = b'\xa5\x01\x00\x10G\x00\x01\x00\x00\x00\x00\x00Y\x15'
+    return msg
+
+def test_emu_init_close():
+    # received a message with wrong start byte plus an valid message
+    # the complete receive buffer must be cleared to 
+    # find the next valid message
+    inv = InvStream()
+    cld = CldStream(inv)
+    cld.close()
+
+
+@pytest.mark.asyncio
+async def test_emu_start(config_tsun_inv1, msg_modbus_rsp, str_test_ip, device_ind_msg):
+    _ = config_tsun_inv1
+    assert asyncio.get_running_loop()
+    inv = InvStream(msg_modbus_rsp)
+
+    assert asyncio.get_running_loop() == inv.mb_timer.loop
+    await inv.send_start_cmd(get_sn_int(), str_test_ip, True, inv.mb_first_timeout)
+    inv.read()         # read complete msg, and dispatch msg
+    assert not inv.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert inv.msg_count == 1
+    assert inv.control == 0x1510
+
+    cld = CldStream(inv)
+    cld.ifc.update_header_cb(inv.ifc.fwd_fifo.peek())
+    assert inv.ifc.fwd_fifo.peek() == device_ind_msg
+    cld.close()
+
+def test_snd_hb(config_tsun_inv1, heartbeat_ind):
+    _ = config_tsun_inv1
+    inv = InvStream()
+    cld = CldStream(inv)
+
+    # await inv.send_start_cmd(get_sn_int(), str_test_ip, False, inv.mb_first_timeout)
+    cld.send_heartbeat_cb(0)
+    assert cld.ifc.tx_fifo.peek() == heartbeat_ind
+    cld.close()
+
+@pytest.mark.asyncio
+async def test_snd_inv_data(config_tsun_inv1, inverter_ind_msg, inverter_rsp_msg):
+    _ = config_tsun_inv1
+    inv = InvStream()
+    inv.db.set_db_def_value(Register.INVERTER_STATUS, 1)
+    inv.db.set_db_def_value(Register.DETECT_STATUS_1, 2)
+    inv.db.set_db_def_value(Register.VERSION, 'V4.0.10')
+    inv.db.set_db_def_value(Register.GRID_VOLTAGE, 224.8)
+    inv.db.set_db_def_value(Register.GRID_CURRENT, 0.73)
+    inv.db.set_db_def_value(Register.GRID_FREQUENCY, 50.05)
+    inv.db.set_db_def_value(Register.PROD_COMPL_TYPE, 6)
+    assert asyncio.get_running_loop() == inv.mb_timer.loop
+    await inv.send_start_cmd(get_sn_int(), str_test_ip, False, inv.mb_first_timeout)
+    inv.db.set_db_def_value(Register.DATA_UP_INTERVAL, 17)  # set test value
+
+    cld = CldStream(inv)
+    cld.time_ofs = 0x33e447a0
+    cld.last_sync = cld._emu_timestamp() - 60
+    cld.pkt_cnt = 0x802
+    assert cld.data_up_inv == 17  # check test value
+    cld.data_up_inv = 0.1         # speedup test first data msg
+    cld._init_new_client_conn()
+    cld.data_up_inv = 0.5         # timeout for second data msg
+    await asyncio.sleep(0.2)
+    assert cld.ifc.tx_fifo.get() == inverter_ind_msg
+
+    cld.append_msg(inverter_rsp_msg)
+    cld.read()         # read complete msg, and dispatch msg
+
+    assert not cld.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert cld.msg_count == 1
+    assert cld.header_len==11
+    assert cld.snr == 2070233889
+    assert cld.unique_id == '2070233889'
+    assert cld.msg_recvd[0]['control']==0x1210
+    assert cld.msg_recvd[0]['seq']=='02:02'
+    assert cld.msg_recvd[0]['data_len']==0x0a
+    assert '02b0' == cld.db.get_db_value(Register.SENSOR_LIST, None)
+    assert cld.db.stat['proxy']['Unknown_Msg'] == 0
+
+    cld.close()
+
+@pytest.mark.asyncio
+async def test_rcv_invalid(config_tsun_inv1, inverter_ind_msg, inverter_rsp_msg):
+    _ = config_tsun_inv1
+    inv = InvStream()
+    assert asyncio.get_running_loop() == inv.mb_timer.loop
+    await inv.send_start_cmd(get_sn_int(), str_test_ip, False, inv.mb_first_timeout)
+    inv.db.set_db_def_value(Register.DATA_UP_INTERVAL, 17)  # set test value
+
+    cld = CldStream(inv)
+    cld._init_new_client_conn()
+
+    cld.append_msg(inverter_ind_msg)
+    cld.read()         # read complete msg, and dispatch msg
+
+    assert not cld.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert cld.msg_count == 1
+    assert cld.header_len==11
+    assert cld.snr == 2070233889
+    assert cld.unique_id == '2070233889'
+    assert cld.msg_recvd[0]['control']==0x4210
+    assert cld.msg_recvd[0]['seq']=='00:01'
+    assert cld.msg_recvd[0]['data_len']==0x199
+    assert '02b0' == cld.db.get_db_value(Register.SENSOR_LIST, None)
+    assert cld.db.stat['proxy']['Unknown_Msg'] == 1
+
+
+    cld.close()

docker-compose.yaml

@@ -83,7 +83,7 @@ services:
       - ${PROJECT_DIR:-./}tsun-proxy/log:/home/tsun-proxy/log 
       - ${PROJECT_DIR:-./}tsun-proxy/config:/home/tsun-proxy/config 
     healthcheck:
-      test: wget --no-verbose --tries=1 --spider  http://localhost:8127/-/healthy || exit 1
+      test: wget --no-verbose --tries=1 --spider  http://127.0.0.1:8127/-/healthy || exit 1
       interval: 10s
       timeout: 3s    
     networks:

ha_addons/.gitignore

@@ -0,0 +1,2 @@
+.data.json
+config.yaml

ha_addons/Makefile

@@ -0,0 +1,138 @@
+#!make
+include ../.env
+
+.PHONY: debug dev build clean rootfs repro rc rel
+
+SHELL = /bin/sh
+JINJA = jinja2
+IMAGE = tsun-gen3-addon
+
+
+# Folders
+SRC=../app
+SRC_PROXY=$(SRC)/src
+CNF_PROXY=$(SRC)/config
+
+ADDON_PATH = ha_addon
+DST=$(ADDON_PATH)/rootfs
+DST_PROXY=$(DST)/home/proxy
+
+INST_BASE=../../ha-addons/ha-addons
+
+TEMPL=templates
+
+# collect source files 
+SRC_FILES := $(wildcard $(SRC_PROXY)/*.py)\
+ $(wildcard $(SRC_PROXY)/*.ini)\
+ $(wildcard $(SRC_PROXY)/cnf/*.py)\
+ $(wildcard $(SRC_PROXY)/gen3/*.py)\
+ $(wildcard $(SRC_PROXY)/gen3plus/*.py)
+CNF_FILES := $(wildcard $(CNF_PROXY)/*.toml)
+
+# determine destination files
+TARGET_FILES = $(SRC_FILES:$(SRC_PROXY)/%=$(DST_PROXY)/%)
+CONFIG_FILES = $(CNF_FILES:$(CNF_PROXY)/%=$(DST_PROXY)/%)
+
+export BUILD_DATE := ${shell date -Iminutes}
+VERSION := $(shell cat $(SRC)/.version)
+export MAJOR  := $(shell echo $(VERSION) | cut -f1 -d.)
+
+PUBLIC_URL := $(shell echo $(PUBLIC_CONTAINER_REGISTRY) | cut -f1 -d/)
+PUBLIC_USER :=$(shell echo $(PUBLIC_CONTAINER_REGISTRY) | cut -f2 -d/)
+
+
+dev debug: build
+	@echo version: $(VERSION)  build-date: $(BUILD_DATE)   image: $(PRIVAT_CONTAINER_REGISTRY)$(IMAGE)
+	export VERSION=$(VERSION)-$@ && \
+	export IMAGE=$(PRIVAT_CONTAINER_REGISTRY)$(IMAGE) && \
+	docker buildx bake -f docker-bake.hcl $@
+
+rc rel: build
+	@echo version: $(VERSION)  build-date: $(BUILD_DATE)   image: $(PUBLIC_CONTAINER_REGISTRY)$(IMAGE)
+	@echo login at $(PUBLIC_URL) as $(PUBLIC_USER)
+	@DO_LOGIN="$(shell echo $(PUBLIC_CR_KEY) | docker login $(PUBLIC_URL) -u $(PUBLIC_USER) --password-stdin)"
+	export VERSION=$(VERSION)-$@ && \
+	export IMAGE=$(PUBLIC_CONTAINER_REGISTRY)$(IMAGE) && \
+	docker buildx bake -f docker-bake.hcl $@
+
+
+build: rootfs $(ADDON_PATH)/config.yaml repro
+
+clean:
+	rm -r -f $(DST_PROXY)
+	rm -f $(DST)/requirements.txt
+	rm -f $(ADDON_PATH)/config.yaml
+	rm -f $(TEMPL)/.data.json
+
+#
+# Build rootfs and config.yaml as local add-on
+# The rootfs is needed to build the add-on Dockercontainers
+# 
+
+rootfs: $(TARGET_FILES) $(CONFIG_FILES) $(DST)/requirements.txt
+
+STAGE=dev
+debug : STAGE=debug
+rc :  STAGE=rc
+rel : STAGE=rel
+
+$(CONFIG_FILES): $(DST_PROXY)/% : $(CNF_PROXY)/%
+	@echo Copy $< to $@
+	@mkdir -p $(@D)
+	@cp $< $@
+
+$(TARGET_FILES): $(DST_PROXY)/% : $(SRC_PROXY)/%
+	@echo Copy $< to $@
+	@mkdir -p $(@D)
+	@cp $< $@
+
+$(DST)/requirements.txt : $(SRC)/requirements.txt
+	@echo Copy $< to $@
+	@cp $< $@
+
+$(ADDON_PATH)/%.yaml: $(TEMPL)/%.jinja $(TEMPL)/.data.json
+	$(JINJA) --strict -D AppVersion=$(VERSION) --format=json $^ -o $@
+
+$(TEMPL)/.data.json: FORCE
+	rsync --checksum $(TEMPL)/$(STAGE)_data.json $@
+
+FORCE : ;
+
+
+#
+# Build repository for Home Assistant Add-On
+# 
+
+INST=$(INST_BASE)/ha_addon_dev
+repro_files = DOCS.md icon.png logo.png translations/de.yaml translations/en.yaml rootfs/run.sh
+repro_root = CHANGELOG.md 
+repro_templates = config.yaml
+repro_subdirs = translations rootfs
+repro_vers = debug dev rc rel
+
+repro_all_files := $(foreach dir,$(repro_vers), $(foreach file,$(repro_files),$(INST_BASE)/ha_addon_$(dir)/$(file)))
+repro_root_files := $(foreach dir,$(repro_vers), $(foreach file,$(repro_root),$(INST_BASE)/ha_addon_$(dir)/$(file)))
+repro_all_templates := $(foreach dir,$(repro_vers), $(foreach file,$(repro_templates),$(INST_BASE)/ha_addon_$(dir)/$(file)))
+repro_all_subdirs := $(foreach dir,$(repro_vers), $(foreach file,$(repro_subdirs),$(INST_BASE)/ha_addon_$(dir)/$(file)))
+
+repro: $(repro_all_subdirs)  $(repro_all_templates) $(repro_all_files) $(repro_root_files)
+
+$(repro_all_subdirs) :
+	mkdir -p $@
+
+$(repro_all_templates) : $(INST_BASE)/ha_addon_%/config.yaml: $(TEMPL)/config.jinja $(TEMPL)/%_data.json $(SRC)/.version
+	$(JINJA) --strict -D AppVersion=$(VERSION)-$* $< $(filter %.json,$^) -o $@
+
+$(repro_root_files) : %/CHANGELOG.md : ../CHANGELOG.md
+	cp $< $@
+
+$(filter $(INST_BASE)/ha_addon_debug/%,$(repro_all_files)) : $(INST_BASE)/ha_addon_debug/% : ha_addon/%
+	cp $< $@
+$(filter $(INST_BASE)/ha_addon_dev/%,$(repro_all_files)) : $(INST_BASE)/ha_addon_dev/% : ha_addon/%
+	cp $< $@
+$(filter $(INST_BASE)/ha_addon_rc/%,$(repro_all_files)) : $(INST_BASE)/ha_addon_rc/% : ha_addon/%
+	cp $< $@
+$(filter $(INST_BASE)/ha_addon_rel/%,$(repro_all_files)) : $(INST_BASE)/ha_addon_rel/% : ha_addon/%
+	cp $< $@
+
+

ha_addons/docker-bake.hcl

@@ -0,0 +1,99 @@
+variable "IMAGE" {
+    default = "tsun-gen3-addon"
+}
+variable "VERSION" {
+    default = "0.0.0"
+}
+variable "MAJOR" {
+    default = "0"
+}
+variable "BUILD_DATE" {
+    default = "dev"
+}
+variable "BRANCH" {
+    default = ""
+}
+variable "DESCRIPTION" {
+    default = "This proxy enables a reliable connection between TSUN third generation inverters (eg. TSOL MS600, MS800, MS2000) and an MQTT broker to integrate the inverter into typical home automations."
+}
+
+target "_common" {
+  context = "ha_addon"
+  dockerfile = "Dockerfile"
+  args = {
+    VERSION = "${VERSION}"
+    environment = "production"
+  }
+  attest = [
+    "type =provenance,mode=max",
+    "type =sbom,generator=docker/scout-sbom-indexer:latest"
+  ]
+  annotations = [
+    "index:io.hass.version=${VERSION}",
+    "index:io.hass.type=addon",
+    "index:io.hass.arch=armhf|aarch64|i386|amd64",
+    "index:org.opencontainers.image.title=TSUN-Proxy",
+    "index:org.opencontainers.image.authors=Stefan Allius",
+    "index:org.opencontainers.image.created=${BUILD_DATE}",
+    "index:org.opencontainers.image.version=${VERSION}",
+    "index:org.opencontainers.image.revision=${BRANCH}",
+    "index:org.opencontainers.image.description=${DESCRIPTION}",
+    "index:org.opencontainers.image.licenses=BSD-3-Clause",
+    "index:org.opencontainers.image.source=https://github.com/s-allius/tsun-gen3-proxy/ha_addons/ha_addon"
+  ]
+  labels = {
+    "io.hass.version" = "${VERSION}"
+    "io.hass.type" = "addon"
+    "io.hass.arch" = "armhf|aarch64|i386|amd64"
+    "org.opencontainers.image.title" = "TSUN-Proxy"
+    "org.opencontainers.image.authors" = "Stefan Allius"
+    "org.opencontainers.image.created" = "${BUILD_DATE}"
+    "org.opencontainers.image.version" = "${VERSION}"
+    "org.opencontainers.image.revision" = "${BRANCH}"
+    "org.opencontainers.image.description" = "${DESCRIPTION}"
+    "org.opencontainers.image.licenses" = "BSD-3-Clause"
+    "org.opencontainers.image.source" = "https://github.com/s-allius/tsun-gen3-proxy/ha_addonsha_addon"
+  }
+  output = [
+    "type=image,push=true"
+  ]
+
+  no-cache = false
+  platforms = ["linux/amd64", "linux/arm64", "linux/arm/v7"]
+}
+
+target "_debug" {
+  args = {
+    LOG_LVL = "DEBUG"
+    environment = "dev"
+  }
+}
+target "_prod" {
+  args = {
+  }
+}
+target "debug" {
+  inherits = ["_common", "_debug"]
+  tags = ["${IMAGE}:debug"]
+}
+
+target "dev" {
+  inherits = ["_common"]
+  tags = ["${IMAGE}:dev"]
+}
+
+target "preview" {
+  inherits = ["_common", "_prod"]
+  tags = ["${IMAGE}:preview", "${IMAGE}:${VERSION}"]
+}
+
+target "rc" {
+  inherits = ["_common", "_prod"]
+  tags = ["${IMAGE}:rc", "${IMAGE}:${VERSION}"]
+}
+
+target "rel" {
+  inherits = ["_common", "_prod"]
+  tags = ["${IMAGE}:latest", "${IMAGE}:${MAJOR}", "${IMAGE}:${VERSION}"]
+  no-cache = true
+}

ha_addons/ha_addon/DOCS.md

@@ -0,0 +1,162 @@
+# Home Assistant Add-on: TSUN Proxy
+
+[TSUN Proxy][tsunproxy] enables a reliable connection between TSUN third generation
+inverters and an MQTT broker. With the proxy, you can easily retrieve real-time values
+such as power, current and daily energy and integrate the inverter into Home Assistant.
+This works even without an internet connection.
+The optional connection to the TSUN Cloud can be disabled!
+
+## Pre-requisites
+
+1. This Add-on requires an MQTT broker to work.
+For a typical installation, we recommend the [Mosquitto add-on][Mosquitto] running on your Home Assistant.
+
+2. You need to loop the proxy into the connection between the inverter and the TSUN Cloud,
+you must adapt the DNS record within the network that your inverter uses. You need a mapping
+from logger.talent-monitoring.com and/or iot.talent-monitoring.com to the IP address of your
+Home Assistant.
+This can be done, for example, by adding a local DNS record to [AdGuard Home Add-on][AdGuard]
+(navigate to `filters` on the AdGuard panel and add an entry under `custom filtering rules`).
+
+## Installation
+
+The installation of this add-on is pretty straightforward and not different in
+comparison to installing any other Home Assistant add-on.
+
+1. Add the repository URL to the Home Assistant add-on store
+[![Add repository on my Home Assistant][repository-badge]][repository-url]
+2. Reload the add-on store page
+3. Click the "Install" button to install the add-on.
+4. Add your inverter configuration to the add-on configuration
+5. Start the "TSUN-Proxy" add-on
+6. Check the logs of the "TSUN-Proxy" add-on to see if everything went well.
+
+_Please note, the add-on is pre-configured to connect with
+Home Assistants default MQTT Broker. There is no need to configure any MQTT parameters
+if you're running an MOSQUITTO add-on. Home Assistant communication and TSUN Cloud URL
+and Ports are also pre-configured._
+
+This automatic handling of the TSUN Cloud and MQTT Broker conflicts with the
+[TSUN Proxy official documentation][tsunproxy]. The official documentation
+will state `mqtt.host`, `mqtt.port`, `mqtt.user`, `mqtt.passwd` `solarman.host`,
+`solarman.port` `tsun.host`, `tsun.port` and Home Assistant options are required.
+For the add-on, however, this isn't needed.
+
+## Configuration
+
+**Note**: _Remember to restart the add-on when the configuration is changed._
+
+Example add-on configuration after installation:
+
+```yaml
+inverters:
+  - serial: R17E760702080400
+    node_id: PV-Garage
+    suggested_area: Garage
+    modbus_polling: false
+    pv1.manufacturer: Shinefar
+    pv1.type: SF-M18/144550
+    pv2.manufacturer: Shinefar
+    pv2.type: SF-M18/144550
+```
+
+**Note**: _This is just an example, you need to replace the values with your own!_
+
+Example add-on configuration for GEN3PLUS inverters:
+
+```yaml
+inverters:
+  - serial: Y17000000000000
+    monitor_sn: 2000000000
+    node_id: PV-Garage
+    suggested_area: Garage
+    modbus_polling: true
+    client_mode.host: 192.168.x.x
+    client_mode.port: 8899
+    client_mode.forward: true
+    pv1.manufacturer: Shinefar
+    pv1.type: SF-M18/144550
+    pv2.manufacturer: Shinefar
+    pv2.type: SF-M18/144550
+    pv3.manufacturer: Shinefar
+    pv3.type: SF-M18/144550
+    pv4.manufacturer: Shinefar
+    pv4.type: SF-M18/144550
+```
+
+**Note**: _This is just an example, you need to replace the values with your own!_
+
+more information about the configuration can be found in the [configuration details page][configdetails].
+
+## MQTT settings
+
+By default, this add-on requires no `mqtt` config from the user. **This is not an error!**
+
+However, you are free to set them if you want to override, however, in
+general usage, that should not be needed and is not recommended for this add-on.
+
+## Changelog & Releases
+
+This repository keeps a change log using [GitHub's releases][releases]
+functionality.
+
+Releases are based on [Semantic Versioning][semver], and use the format
+of `MAJOR.MINOR.PATCH`. In a nutshell, the version will be incremented
+based on the following:
+
+- `MAJOR`: Incompatible or major changes.
+- `MINOR`: Backwards-compatible new features and enhancements.
+- `PATCH`: Backwards-compatible bugfixes and package updates.
+
+## Support
+
+Got questions?
+
+You have several options to get them answered:
+
+- The Discussions section on [GitHub][discussions].
+- The [Home Assistant Discord chat server][discord-ha] for general Home
+  Assistant discussions and questions.
+
+You could also [open an issue here][issue] GitHub.
+
+## Authors & contributors
+
+The original setup of this repository is by [Stefan Allius][author].
+
+We're very happy to receive contributions to this project! You can get started by reading [CONTRIBUTING.md][contribute].
+
+## License
+
+This project is licensed under the [BSD 3-clause License][bsd].
+
+Note the aiomqtt library used is based on the paho-mqtt library, which has a dual license.
+One of the licenses is the so-called [Eclipse Distribution License v1.0.][eclipse]
+It is almost word-for-word identical to the BSD 3-clause License. The only differences are:
+
+- One use of "COPYRIGHT OWNER" (EDL) instead of "COPYRIGHT HOLDER" (BSD)
+- One use of "Eclipse Foundation, Inc." (EDL) instead of "copyright holder" (BSD)
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+[tsunproxy]: https://github.com/s-allius/tsun-gen3-proxy
+[discussions]: https://github.com/s-allius/tsun-gen3-proxy/discussions
+[author]: https://github.com/s-allius
+[discord-ha]: https://discord.gg/c5DvZ4e
+[issue]: https://github.com/s-allius/tsun-gen3-proxy/issues
+[releases]: https://github.com/s-allius/tsun-gen3-proxy/releases
+[contribute]: https://github.com/s-allius/tsun-gen3-proxy/blob/main/CONTRIBUTING.md
+[semver]: http://semver.org/spec/v2.0.0.htm
+[bsd]: https://opensource.org/licenses/BSD-3-Clause
+[eclipse]: https://www.eclipse.org/org/documents/edl-v10.php
+[Mosquitto]: https://github.com/home-assistant/addons/blob/master/mosquitto/DOCS.md
+[AdGuard]: https://github.com/hassio-addons/addon-adguard-home
+[repository-badge]: https://img.shields.io/badge/Add%20repository%20to%20my-Home%20Assistant-41BDF5?logo=home-assistant&style=for-the-badge
+[repository-url]: https://my.home-assistant.io/redirect/supervisor_add_addon_repository/?repository_url=https%3A%2F%2Fgithub.com%2Fs-allius%2Fha-addons
+[configdetails]: https://github.com/s-allius/tsun-gen3-proxy/wiki/Configuration-toml

ha_addons/ha_addon/Dockerfile

@@ -0,0 +1,90 @@
+
+############################################################################
+#
+# TSUN Proxy
+# Homeassistant Add-on
+# 
+# based on https://github.com/s-allius/tsun-gen3-proxy/tree/main
+#
+############################################################################
+
+
+######################
+# 1 Build Base Image #
+######################
+
+ARG BUILD_FROM="ghcr.io/hassio-addons/base:17.1.0"
+# hadolint ignore=DL3006
+FROM $BUILD_FROM AS base
+
+# Installiere Python, pip und virtuelle Umgebungstools
+RUN apk add --no-cache python3=3.12.8-r1 py3-pip=24.3.1-r0 && \
+    python -m venv /opt/venv && \
+    . /opt/venv/bin/activate
+
+ENV PATH="/opt/venv/bin:$PATH"
+
+
+
+#######################
+# 2 Build wheel       #
+#######################
+FROM base AS builder
+
+COPY rootfs/requirements.txt /root/
+
+RUN apk add --no-cache build-base=0.5-r3 && \
+    python -m pip install --no-cache-dir wheel==0.45.1 && \
+    python -OO -m pip wheel --no-cache-dir --wheel-dir=/root/wheels -r /root/requirements.txt
+
+
+
+
+#######################
+# 3 Build runtime     #
+#######################
+FROM base AS runtime
+
+ARG SERVICE_NAME
+ARG VERSION
+ENV SERVICE_NAME=${SERVICE_NAME}
+
+
+
+#######################
+# 4 Install libraries #
+#######################
+
+# install the requirements from the wheels packages from the builder stage 
+# and unistall python packages and alpine package manger to reduce attack surface
+
+COPY --from=builder /root/wheels /root/wheels
+RUN python -m pip install --no-cache-dir --no-cache --no-index /root/wheels/* && \
+    rm -rf /root/wheels && \
+    python -m pip uninstall --yes wheel pip && \
+    apk --purge del apk-tools
+
+
+#######################
+# 5 copy data         #
+#######################
+
+COPY rootfs/ /
+
+
+
+#######################
+# 6 run app           #
+#######################
+
+# make run.sh executable
+RUN chmod a+x /run.sh && \
+    echo ${VERSION} > /proxy-version.txt
+
+# command to run on container start
+CMD [ "/run.sh" ]
+
+
+
+#######################
+

ha_addons/ha_addon/rootfs/run.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/with-contenv bashio
+
+echo "Add-on environment started"
+
+echo "check for Home Assistant MQTT"
+MQTT_HOST=$(bashio::services mqtt "host")
+MQTT_PORT=$(bashio::services mqtt "port")
+MQTT_USER=$(bashio::services mqtt "username")
+MQTT_PASSWORD=$(bashio::services mqtt "password")
+
+# if a MQTT was/not found, drop a note
+if [ -z "$MQTT_HOST" ]; then
+    echo "MQTT not found"
+else
+    echo "MQTT found"
+    export MQTT_HOST
+    export MQTT_PORT
+    export MQTT_USER
+    export MQTT_PASSWORD
+fi
+
+
+
+
+# Create folder for log und config files
+mkdir -p /homeassistant/tsun-proxy/logs
+
+cd /home/proxy || exit
+
+export VERSION=$(cat /proxy-version.txt)
+
+echo "Start Proxyserver..."
+python3 server.py --json_config=/data/options.json  --log_path=/homeassistant/tsun-proxy/logs/ --config_path=/homeassistant/tsun-proxy/ --log_backups=2

ha_addons/ha_addon/translations/de.yaml

@@ -0,0 +1,95 @@
+---
+configuration:
+  inverters:
+    name: Wechselrichter
+    description: >+
+      Für jeden Wechselrichter muss die Seriennummer des Wechselrichters einer MQTT
+      Definition zugeordnet werden. Dazu wird der entsprechende Konfigurationsblock mit der
+      16-stellige Seriennummer gestartet, so dass alle nachfolgenden Parameter diesem 
+      Wechselrichter zugeordnet sind.
+      Weitere wechselrichterspezifische Parameter (z.B. Polling Mode) können im 
+      Konfigurationsblock gesetzt werden.
+
+      Die Seriennummer der GEN3 Wechselrichter beginnen mit `R17` und die der GEN3PLUS
+      Wechselrichter mir `Y17`oder `47`!
+
+      Siehe Beispielkonfiguration im Dokumentations-Tab
+
+  tsun.enabled:
+    name: Verbindung zur TSUN Cloud - nur für GEN3-Wechselrichter
+    description: >+
+      Schaltet die Verbindung zur TSUN Cloud ein/aus.
+      Diese Verbindung ist erforderlich, wenn Sie Daten an die TSUN Cloud senden möchten,
+      z.B. um die TSUN-Apps zu nutzen oder Firmware-Updates zu erhalten.
+      
+      ein => normaler Proxy-Betrieb.
+      aus => Der Wechselrichter wird vom Internet isoliert.
+  solarman.enabled:
+    name: Verbindung zur Solarman Cloud - nur für GEN3PLUS Wechselrichter
+    description: >+
+      Schaltet die Verbindung zur Solarman Cloud ein/aus.
+      Diese Verbindung ist erforderlich, wenn Sie Daten an die Solarman Cloud senden möchten,
+      z.B. um die Solarman Apps zu nutzen oder Firmware-Updates zu erhalten.
+      
+      ein => normaler Proxy-Betrieb.
+      aus => Der Wechselrichter wird vom Internet isoliert.
+  inverters.allow_all:
+    name: Erlaube Verbindungen von sämtlichen Wechselrichtern
+    description: >-
+      Der Proxy akzeptiert normalerweise nur Verbindungen von konfigurierten Wechselrichtern.
+      Schalten Sie dies für Testzwecke und unbekannte Seriennummern ein.
+  mqtt.host:
+    name: MQTT Broker Host
+    description: >-
+      Hostname oder IP-Adresse des MQTT-Brokers. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zum Home Assistant MQTT-Broker herzustellen.
+  mqtt.port:
+    name: MQTT Broker Port
+    description: >-
+      Port des MQTT-Brokers. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zum Home Assistant MQTT-Broker herzustellen.
+  mqtt.user:
+    name: MQTT Broker Benutzer
+    description: >-
+      Benutzer für den MQTT-Broker. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zum Home Assistant MQTT-Broker herzustellen.
+  mqtt.passwd:
+    name: MQTT Broker Passwort
+    description: >-
+      Passwort für den MQTT-Broker. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zum Home Assistant MQTT-Broker herzustellen.
+  ha.auto_conf_prefix:
+    name: MQTT-Präfix für das Abonnieren von Home Assistant-Statusaktualisierungen
+  ha.discovery_prefix:
+    name: MQTT-Präfix für das discovery topic
+  ha.entity_prefix:
+    name: MQTT-Themenpräfix für die Veröffentlichung von Wechselrichterwerten
+  ha.proxy_node_id:
+    name: MQTT-Knoten-ID für die proxy_node_id
+  ha.proxy_unique_id:
+    name: MQTT-eindeutige ID zur Identifizierung einer Proxy-Instanz
+  tsun.host:
+    name: TSUN Cloud Host
+    description: >-
+      Hostname oder IP-Adresse der TSUN-Cloud. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zur Cloud logger.talent-monitoring.com herzustellen.
+  solarman.host:
+    name: Solarman Cloud Host
+    description: >-
+      Hostname oder IP-Adresse der Solarman-Cloud. Wenn nicht gesetzt, versucht das Addon, eine Verbindung zur Cloud iot.talent-monitoring.com herzustellen.
+  gen3plus.at_acl.tsun.allow:
+      name: TSUN GEN3PLUS ACL allow
+      description: >-
+        Liste erlaubter AT-Befehle für TSUN GEN3PLUS
+  gen3plus.at_acl.tsun.block:
+      name: TSUN GEN3 ACL block
+      description: >-
+          Liste blockierter AT-Befehle für TSUN GEN3PLUS
+  gen3plus.at_acl.mqtt.allow:
+      name: MQTT GEN3PLUS ACL allow
+      description: >-
+        Liste erlaubter MQTT-Befehle für GEN3PLUS
+  gen3plus.at_acl.mqtt.block:
+      name: MQTT GEN3PLUS ACL block
+      description: >-
+          Liste blockierter MQTT-Befehle für GEN3PLUS
+
+
+network:
+  5005/tcp: listening Port für TSUN GEN3 Wechselrichter
+  10000/tcp: listening Port für TSUN GEN3PLUS Wechselrichter

ha_addons/ha_addon/translations/en.yaml

@@ -0,0 +1,95 @@
+---
+configuration:
+  inverters:
+    name: Inverters
+    description: >+
+      For each GEN3 inverter, the serial number of the inverter must be mapped to an MQTT
+      definition. To do this, the corresponding configuration block is started with
+      16-digit serial number so that all subsequent parameters are assigned
+      to this inverter. Further inverter-specific parameters (e.g. polling mode) can be set
+      in the configuration block
+
+      The serial numbers of all GEN3 inverters start with `R17` and that of the GEN3PLUS
+      inverters with ‘Y17’ or ‘47’!
+      
+      For reference see example configuration in Documentation Tab
+
+  tsun.enabled:
+    name: Connection to TSUN Cloud - for GEN3 inverter only
+    description: >+
+      switch on/off connection to the TSUN cloud.
+      This connection is only required if you want send data to the TSUN cloud
+      eg. to use the TSUN APPs or receive firmware updates.
+      
+      on => normal proxy operation.
+      off => The Inverter become isolated from Internet.
+  solarman.enabled:
+    name: Connection to Solarman Cloud - for GEN3PLUS inverter only
+    description: >+
+      switch on/off connection to the Solarman cloud.
+      This connection is only required if you want send data to the Solarman cloud
+      eg. to use the Solarman APPs or receive firmware updates.
+      
+      on => normal proxy operation.
+      off => The Inverter become isolated from Internet
+  inverters.allow_all:
+    name: Allow all connections from all inverters
+    description: >-
+      The proxy only usually accepts connections from configured inverters.
+      Switch on for test purposes and unknown serial numbers.
+  mqtt.host:
+    name: MQTT Broker Host
+    description: >-
+      Hostname or IP address of the MQTT broker. if not set, the addon will try to connect to the Home Assistant MQTT broker
+  mqtt.port:
+    name: MQTT Broker Port
+    description: >-
+      Port of the MQTT broker. if not set, the addon will try to connect to the Home Assistant MQTT broker
+  mqtt.user:
+    name: MQTT Broker User
+    description: >-
+      User for the MQTT broker. if not set, the addon will try to connect to the Home Assistant MQTT broker
+  mqtt.passwd:
+    name: MQTT Broker Password
+    description: >-
+      Password for the MQTT broker. if not set, the addon will try to connect to the Home Assistant MQTT broker
+  ha.auto_conf_prefix:
+    name: MQTT prefix for subscribing for homeassistant status updates
+  ha.discovery_prefix:
+    name: MQTT prefix for discovery topic
+  ha.entity_prefix:
+    name: MQTT topic prefix for publishing inverter values
+  ha.proxy_node_id:
+    name: MQTT node id, for the proxy_node_id
+  ha.proxy_unique_id:
+    name: MQTT unique id, to identify a proxy instance
+  tsun.host:
+    name: TSUN Cloud Host
+    description: >-
+      Hostname or IP address of the TSUN cloud. if not set, the addon will try to connect to the cloud 
+      on logger.talent-monitoring.com
+  solarman.host:
+    name: Solarman Cloud Host
+    description: >-
+      Hostname or IP address of the Solarman cloud. if not set, the addon will try to connect to the cloud 
+      on iot.talent-monitoring.com
+  gen3plus.at_acl.tsun.allow:
+      name: TSUN GEN3PLUS ACL allow
+      description: >-
+        List of allowed TSUN GEN3PLUS AT commands
+  gen3plus.at_acl.tsun.block:
+      name: TSUN GEN3 ACL block
+      description: >-
+          List of blocked TSUN GEN3PLUS AT commands
+  gen3plus.at_acl.mqtt.allow:
+      name: MQTT GEN3PLUS ACL allow
+      description: >-
+        List of allowed MQTT GEN3PLUS commands
+  gen3plus.at_acl.mqtt.block:
+      name: MQTT GEN3PLUS ACL block
+      description: >-
+          List of blocked MQTT GEN3PLUS commands
+
+network:
+  5005/tcp: listening Port for TSUN GEN3 Devices
+  10000/tcp: listening Port for TSUN GEN3PLUS Devices

ha_addons/repository.yaml

@@ -0,0 +1,3 @@
+name: TSUN-Proxy
+url: https://github.com/s-allius/tsun-gen3-proxy/ha_addons
+maintainer: Stefan Allius

ha_addons/templates/config.jinja

@@ -0,0 +1,112 @@
+name: {{name}}
+description: {{description}}
+version: {% if version is defined and version|length %} {{version}} {% else %} {{AppVersion}} {% endif %}
+image: {{image}}
+url: https://github.com/s-allius/tsun-gen3-proxy
+slug: {{slug}}
+advanced: {{advanced}}
+stage: {{stage}}
+init: false
+arch:
+  - aarch64
+  - amd64
+  - armhf
+  - armv7
+startup: services
+homeassistant_api: true
+map:
+  - type: addon_config
+    path: /homeassistant/tsun-proxy
+    read_only: False
+services:
+  - mqtt:want
+ports:
+  5005/tcp: 5005
+  10000/tcp: 10000
+
+# FIXME: we disabled the watchdog due to exceptions in the ha supervisor. See: https://github.com/s-allius/tsun-gen3-proxy/issues/249
+# watchdog: "http://[HOST]:[PORT:8127]/-/healthy"
+
+# Definition of parameters in the configuration tab of the addon
+# parameters are available within the container as /data/options.json
+# and should become picked up by the proxy - current workaround as a transfer script
+# TODO: check again for multi hierarchie parameters
+
+schema:
+  inverters:
+    - serial: match(^(R17|Y17|Y47).{13}$)
+      monitor_sn: int?
+      node_id: str
+      suggested_area: str
+      modbus_polling: bool
+      client_mode.host: match(\b((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\b)?
+      client_mode.port: port?
+      client_mode.forward: bool?
+      #strings: # leider funktioniert es nicht die folgenden 3 parameter im schema aufzulisten. möglicherweise wird die verschachtelung nicht unterstützt.
+      #  - string: str
+      #    type: str
+      #    manufacturer: str
+      # daher diese variante
+      pv1.manufacturer: str?
+      pv1.type: str?
+      pv2.manufacturer: str?
+      pv2.type: str?
+      pv3.manufacturer: str?
+      pv3.type: str?
+      pv4.manufacturer: str?
+      pv4.type: str?
+      pv5.manufacturer: str?
+      pv5.type: str?
+      pv6.manufacturer: str?
+      pv6.type: str?
+  tsun.enabled: bool
+  solarman.enabled: bool
+  inverters.allow_all: bool
+
+  # optionale parameter
+
+  mqtt.host: str?
+  mqtt.port: port?
+  mqtt.user: str?
+  mqtt.passwd: password?
+  ha.auto_conf_prefix: str? # suggeriert optionale konfigurationsoption -> es darf jedoch kein default unter "options" angegeben werden
+  ha.discovery_prefix: str? # dito
+  ha.entity_prefix: str? #dito
+  ha.proxy_node_id: str? #dito
+  ha.proxy_unique_id: str? #dito
+  tsun.host: str?
+  solarman.host: str?
+  gen3plus.at_acl.tsun.allow:
+    - str
+  gen3plus.at_acl.tsun.block:
+    - str?
+  gen3plus.at_acl.mqtt.allow:
+    - str
+  gen3plus.at_acl.mqtt.block:
+    - str?
+
+# set default options for mandatory parameters
+# for optional parameters do not define any default value in the options dictionary.
+# If any default value is given, the option becomes a required value.
+options:
+  inverters:
+    - serial: R17E760702080400
+      node_id: PV-Garage
+      suggested_area: Garage
+      modbus_polling: false
+      # strings:
+      #  - string: PV1
+      #    type: SF-M18/144550
+      #    manufacturer: Shinefar
+      #  - string: PV2
+      #    type: SF-M18/144550
+      #    manufacturer: Shinefar
+      pv1.manufacturer: Shinefar
+      pv1.type: SF-M18/144550
+      pv2.manufacturer: Shinefar
+      pv2.type: SF-M18/144550
+  tsun.enabled: true # set default
+  solarman.enabled: true # set default
+  inverters.allow_all: false # set default
+  gen3plus.at_acl.tsun.allow: ["AT+Z", "AT+UPURL", "AT+SUPDATE"]
+  gen3plus.at_acl.mqtt.allow: ["AT+"]

ha_addons/templates/debug_data.json

@@ -0,0 +1,10 @@
+
+{
+    "name": "TSUN-Proxy (Debug)",
+    "description": "MQTT Proxy for TSUN Photovoltaic Inverters with Debug Logging",
+    "version": "debug",
+    "image": "docker.io/sallius/tsun-gen3-addon",
+    "slug": "tsun-proxy-debug",
+    "advanced": true,
+    "stage": "experimental"
+}

ha_addons/templates/dev_data.json

@@ -0,0 +1,10 @@
+
+{
+    "name": "TSUN-Proxy (Dev)",
+    "description": "MQTT Proxy for TSUN Photovoltaic Inverters",
+    "version": "dev",
+    "image": "docker.io/sallius/tsun-gen3-addon",
+    "slug": "tsun-proxy-dev",
+    "advanced": false,
+    "stage": "experimental"
+}

ha_addons/templates/rc_data.json

@@ -0,0 +1,10 @@
+
+{
+    "name": "TSUN-Proxy (Release Candidate)",
+    "description": "MQTT Proxy for TSUN Photovoltaic Inverters",
+    "version": "rc",
+    "image": "ghcr.io/s-allius/tsun-gen3-addon",
+    "slug": "tsun-proxy-rc",
+    "advanced": true,
+    "stage": "experimental"
+}

ha_addons/templates/rel_data.json

@@ -0,0 +1,9 @@
+
+{
+    "name": "TSUN-Proxy",
+    "description": "MQTT Proxy for TSUN Photovoltaic Inverters",
+    "image": "ghcr.io/s-allius/tsun-gen3-addon",
+    "slug": "tsun-proxy",
+    "advanced": false,
+    "stage": "stable"
+}

proxy.c4

@@ -0,0 +1,20 @@
+model {
+    extend home.logger.proxy {
+        component webserver 'http server'
+        component inverter 'inverter'
+        component local 'local connection'
+        component remote 'remote connection'
+        component r-ifc 'async-ifc'
+        component l-ifc 'async-ifc'
+        component prot 'Protocol' 'SolarmanV5 or Talent'
+        component config 'config' 'reads the file confg.toml'
+        component mqtt
+        inverter -> local
+        inverter -> remote
+        remote -> r-ifc
+        remote -> prot
+        local -> l-ifc
+        local -> prot
+        prot -> mqtt
+    }
+}

pytest.ini

@@ -0,0 +1,8 @@
+# pytest.ini or .pytest.ini
+[pytest]
+minversion = 8.0
+addopts = -ra -q --durations=5
+pythonpath = app/src app/tests ha_addons/ha_addon/rootfs 
+testpaths = app/tests ha_addons/ha_addon/tests
+asyncio_default_fixture_loop_scope = function 
+asyncio_mode = strict

tsun.code-workspace

@@ -0,0 +1,15 @@
+{
+	"folders": [
+		{
+			"path": "."
+		},
+		{
+			"path": "../wiki"
+		},
+		{
+			"name": "ha-addons",
+			"path": "../ha-addons/ha-addons"
+		}
+	],
+	"settings": {}
+}