move code from app.py into server.py

app/src/server.py

@@ -1,11 +1,25 @@
 import logging
 import logging.handlers
+from logging import config  # noqa F401
+import asyncio
+from asyncio import StreamReader, StreamWriter
 import os
 import argparse
+from quart import Quart, Response
+
 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 web import Web
+from web.wrapper import url_for
+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 modbus_tcp import ModbusTcp
 
 
 class Server():
@@ -135,3 +149,150 @@ class Server():
         logging.info(f"LOG_LVL    : {log_lvl}")
 
         return switch.get(log_lvl, None)
+
+
+class ProxyState:
+    _is_up = False
+
+    @staticmethod
+    def is_up() -> bool:
+        return ProxyState._is_up
+
+    @staticmethod
+    def set_up(value: bool):
+        ProxyState._is_up = value
+
+
+class HypercornLogHndl:
+    access_hndl = []
+    error_hndl = []
+    must_fix = False
+    HYPERC_ERR = 'hypercorn.error'
+    HYPERC_ACC = 'hypercorn.access'
+
+    @classmethod
+    def save(cls):
+        cls.access_hndl = logging.getLogger(
+            cls.HYPERC_ACC).handlers
+        cls.error_hndl = logging.getLogger(
+            cls.HYPERC_ERR).handlers
+        cls.must_fix = True
+
+    @classmethod
+    def restore(cls):
+        if not cls.must_fix:
+            return
+        cls.must_fix = False
+        access_hndl = logging.getLogger(
+            cls.HYPERC_ACC).handlers
+        if access_hndl != cls.access_hndl:
+            print(' * Fix hypercorn.access setting')
+            logging.getLogger(
+                cls.HYPERC_ACC).handlers = cls.access_hndl
+
+        error_hndl = logging.getLogger(
+            cls.HYPERC_ERR).handlers
+        if error_hndl != cls.error_hndl:
+            print(' * Fix hypercorn.error setting')
+            logging.getLogger(
+                cls.HYPERC_ERR).handlers = cls.error_hndl
+
+
+app = Quart(__name__,
+            template_folder='web/templates',
+            static_folder='web/static')
+app.secret_key = 'JKLdks.dajlKKKdladkflKwolafallsdfl'
+app.jinja_env.globals.update(url_for=url_for)
+server = Server(app, __name__ == "__main__")
+Web(app, server.trans_path, server.rel_urls)
+
+
+@app.route('/-/ready')
+async def ready():
+    if ProxyState.is_up():
+        status = 200
+        text = 'Is ready'
+    else:
+        status = 503
+        text = 'Not ready'
+    return Response(status=status, response=text)
+
+
+@app.route('/-/healthy')
+async def healthy():
+
+    if ProxyState.is_up():
+        # logging.info('web reqeust healthy()')
+        for inverter in InverterIfc:
+            try:
+                res = inverter.healthy()
+                if not res:
+                    return Response(status=503, response="I have a problem")
+            except Exception as err:
+                logging.info(f'Exception:{err}')
+
+    return Response(status=200, response="I'm fine")
+
+
+async def handle_client(reader: StreamReader, writer: StreamWriter, inv_class):
+    '''Handles a new incoming connection and starts an async loop'''
+
+    with inv_class(reader, writer) as inv:
+        await inv.local.ifc.server_loop()
+
+
+@app.before_serving
+async def startup_app():
+    HypercornLogHndl.save()
+    loop = asyncio.get_event_loop()
+    Proxy.class_init()
+    Schedule.start()
+    ModbusTcp(loop)
+
+    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))
+    ProxyState.set_up(True)
+
+
+@app.before_request
+async def startup_request():
+    HypercornLogHndl.restore()
+
+
+@app.after_serving
+async def handle_shutdown():   # pragma: no cover
+    '''Close all TCP connections and stop the event loop'''
+
+    logging.info('Shutdown due to SIGTERM')
+    loop = asyncio.get_event_loop()
+    ProxyState.set_up(False)
+
+    #
+    # first, disc all open TCP connections gracefully
+    #
+    for inverter in InverterIfc:
+        await inverter.disc(True)
+
+    logging.info('Proxy disconnecting done')
+
+    await Proxy.class_close(loop)
+
+
+if __name__ == "__main__":  # pragma: no cover
+
+    try:
+        logging.info("Start Quart")
+        app.run(host='0.0.0.0', port=8127, use_reloader=False,
+                debug=server.log_level == logging.DEBUG)
+        logging.info("Quart stopped")
+
+    except KeyboardInterrupt:
+        pass
+    except asyncio.exceptions.CancelledError:
+        logging.info("Quart cancelled")
+
+    finally:
+        logging.info(f'Finally, exit Server "{server.serv_name}"')