mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-11-23 07:28:13 +01:00
88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
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import logging
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import weakref
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from collections import defaultdict
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import aiohttp
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from aiohttp import web
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from voluptuous import Schema
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from cbpi.utils import json_dumps
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class CBPiWebSocket:
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def __init__(self, cbpi) -> None:
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self.cbpi = cbpi
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self._callbacks = defaultdict(set)
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self._clients = weakref.WeakSet()
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self.logger = logging.getLogger(__name__)
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self.cbpi.app.add_routes([web.get('/ws', self.websocket_handler)])
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self.cbpi.bus.register_object(self)
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#if self.cbpi.config.static.get("ws_push_all", False):
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self.cbpi.bus.register("#", self.listen)
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async def listen(self, topic, **kwargs):
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data = dict(topic=topic, data=dict(**kwargs))
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self.logger.debug("PUSH %s " % data)
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self.send(data)
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def send(self, data):
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self.logger.debug("broadcast to ws clients. Data: %s" % data)
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for ws in self._clients:
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async def send_data(ws, data):
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await ws.send_json(data=data, dumps=json_dumps)
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self.cbpi.app.loop.create_task(send_data(ws, data))
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async def websocket_handler(self, request):
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ws = web.WebSocketResponse()
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await ws.prepare(request)
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self._clients.add(ws)
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try:
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peername = request.transport.get_extra_info('peername')
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if peername is not None:
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host = peername[0]
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port = peername[1]
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else:
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host, port = "Unknowen"
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self.logger.info("Client Connected - Host: %s Port: %s - client count: %s " % (host, port, len(self._clients)))
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except Exception as e:
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pass
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try:
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await ws.send_json(data=dict(topic="connection/success"))
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async for msg in ws:
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if msg.type == aiohttp.WSMsgType.TEXT:
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msg_obj = msg.json()
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schema = Schema({"topic": str, "data": dict})
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schema(msg_obj)
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topic = msg_obj.get("topic")
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data = msg_obj.get("data")
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if topic == "close":
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await ws.close()
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else:
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if data is not None:
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await self.cbpi.bus.fire(topic=topic, **data)
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else:
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await self.cbpi.bus.fire(topic=topic)
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elif msg.type == aiohttp.WSMsgType.ERROR:
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self.logger.error('ws connection closed with exception %s' % ws.exception())
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except Exception as e:
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self.logger.error("%s - Received Data %s" % (str(e), msg.data))
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finally:
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self._clients.discard(ws)
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self.logger.info("Web Socket Close")
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return ws
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