133 lines
4.3 KiB
Python
133 lines
4.3 KiB
Python
import logging, traceback
|
|
from config import Config
|
|
#import gc
|
|
from messages import Message, hex_dump_memory
|
|
|
|
logger = logging.getLogger('conn')
|
|
|
|
class AsyncStream(Message):
|
|
|
|
def __init__(self, reader, writer, addr, remote_stream, server_side: bool) -> None:
|
|
super().__init__()
|
|
self.reader = reader
|
|
self.writer = writer
|
|
self.remoteStream = remote_stream
|
|
self.server_side = server_side
|
|
self.addr = addr
|
|
self.unique_id = 0
|
|
self.node_id = ''
|
|
|
|
'''
|
|
Our puplic methods
|
|
'''
|
|
def set_serial_no(self, serial_no : str):
|
|
logger.debug(f'SerialNo: {serial_no}')
|
|
|
|
if self.unique_id != serial_no:
|
|
|
|
inverters = Config.get('inverters')
|
|
#logger.debug(f'Inverters: {inverters}')
|
|
|
|
if serial_no in inverters:
|
|
logger.debug(f'SerialNo {serial_no} allowed!')
|
|
inv = inverters[serial_no]
|
|
self.node_id = inv['node_id']
|
|
self.sug_area = inv['suggested_area']
|
|
else:
|
|
logger.debug(f'SerialNo {serial_no} not known!')
|
|
self.node_id = ''
|
|
self.sug_area = ''
|
|
if not inverters['allow_all']:
|
|
self.unique_id = None
|
|
|
|
logger.warning('ignore message from unknow inverter! (SerialNo: {serial_no})')
|
|
return
|
|
|
|
self.unique_id = serial_no
|
|
|
|
|
|
|
|
|
|
|
|
async def loop(self) -> None:
|
|
|
|
while True:
|
|
try:
|
|
await self.__async_read()
|
|
|
|
if self.id_str:
|
|
self.set_serial_no(self.id_str.decode("utf-8"))
|
|
|
|
if self.unique_id:
|
|
await self.__async_write()
|
|
await self.__async_forward()
|
|
await self.async_publ_mqtt()
|
|
|
|
|
|
except (ConnectionResetError,
|
|
ConnectionAbortedError,
|
|
RuntimeError) as error:
|
|
logger.warning(f'In loop for {self.addr}: {error}')
|
|
self.close()
|
|
return
|
|
except Exception:
|
|
logger.error(
|
|
f"Exception for {self.addr}:\n"
|
|
f"{traceback.format_exc()}")
|
|
self.close()
|
|
return
|
|
|
|
def disc(self) -> None:
|
|
logger.debug(f'in AsyncStream.disc() {self.addr}')
|
|
self.writer.close()
|
|
|
|
|
|
def close(self):
|
|
logger.debug(f'in AsyncStream.close() {self.addr}')
|
|
self.writer.close()
|
|
super().close() # call close handler in the parent class
|
|
|
|
# logger.info (f'AsyncStream refs: {gc.get_referrers(self)}')
|
|
|
|
|
|
'''
|
|
Our private methods
|
|
'''
|
|
async def __async_read(self) -> None:
|
|
data = await self.reader.read(4096)
|
|
if data:
|
|
self._recv_buffer += data
|
|
self.read() # call read in parent class
|
|
else:
|
|
raise RuntimeError("Peer closed.")
|
|
|
|
async def __async_write(self) -> None:
|
|
if self._send_buffer:
|
|
hex_dump_memory(logging.INFO, f'Transmit to {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:]
|
|
|
|
async def __async_forward(self) -> None:
|
|
if self._forward_buffer:
|
|
if not self.remoteStream:
|
|
await self.async_create_remote() # only implmeneted for server side => syncServerStream
|
|
|
|
if self.remoteStream:
|
|
hex_dump_memory(logging.DEBUG, f'Forward to {self.remoteStream.addr}:', self._forward_buffer, len(self._forward_buffer))
|
|
self.remoteStream.writer.write (self._forward_buffer)
|
|
await self.remoteStream.writer.drain()
|
|
self._forward_buffer = bytearray(0)
|
|
|
|
async def async_create_remote(self) -> None:
|
|
pass
|
|
|
|
async def async_publ_mqtt(self) -> None:
|
|
pass
|
|
|
|
|
|
def __del__ (self):
|
|
logging.debug (f"AsyncStream.__del__ {self.addr}")
|
|
|
|
|