Files
brewpi/ws/message.py
T
2020-11-28 11:52:11 +01:00

74 lines
1.7 KiB
Python

import asyncio
from ws.connection import IConnection
import json
class MsgIo:
def __init__(self, key, send, send_from_thread):
self.key = key
self.sender = send
self.send_from_thread_cb = send_from_thread
self.receiver = None
def set_recv_handler(self, handler):
self.receiver = handler
async def on_recv(self, data):
print("MessageHandler {}".format(data))
if self.receiver is not None:
await self.receiver(data[self.key])
async def send(self, data):
return await self.sender({self.key: data})
def send_from_thread(self, data):
return self.send_from_thread_cb({self.key: data})
def can_key(self, key):
return self.key == key
def get_key(self):
return self.key
class MessageDispatcher(IConnection):
def __init__(self, auto_subscribe=False, loop=None):
self.msg_handlers: MsgIo = []
self.state = None
self.state = asyncio.Queue(loop=loop)
self.auto_subscribe = auto_subscribe
self.loop = loop
def msgio_get(self, key):
obj = MsgIo(key, self.send, self.send_from_thread)
if key not in self.msg_handlers:
self.msg_handlers.append(obj)
return obj
return None
async def on_connect(self):
if self.auto_subscribe:
for handler in self.msg_handlers:
key = handler.get_key()
print("Would subscribe {}".format(key))
await self.send({'+': key})
async def on_disconnect(self):
pass
async def on_recv(self, data):
d = json.loads(data)
for key_req in d.keys():
for h in self.msg_handlers:
if h.can_key(key_req):
await h.on_recv(d)
async def on_send(self):
return await self.state.get()
async def send(self, data):
await self.state.put(data)
def send_from_thread(self, data):
asyncio.ensure_future(self.send(data), loop=self.loop)