75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
import asyncio
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import json
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import os
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import websockets
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from platypush.context import get_or_create_event_loop
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from platypush.message import Message
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from platypush.plugins import Plugin, action
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from platypush.utils import get_ssl_client_context
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class WebsocketPlugin(Plugin):
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"""
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Plugin to send messages over a websocket connection
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Requires:
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* **websockets** (``pip install websockets``)
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"""
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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@action
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def send(self, url, msg, ssl_cert=None, ssl_key=None, ssl_cafile=None,
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ssl_capath=None, *args, **kwargs):
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"""
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Sends a message to a websocket.
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:param url: Websocket URL, e.g. ws://localhost:8765 or wss://localhost:8765
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:type topic: str
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:param msg: Message to be sent. It can be a list, a dict, or a Message object
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:param ssl_cert: Path to the SSL certificate to be used, if the SSL connection requires client authentication as well (default: None)
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:type ssl_cert: str
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:param ssl_key: Path to the SSL key to be used, if the SSL connection requires client authentication as well (default: None)
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:type ssl_key: str
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:param ssl_cafile: Path to the certificate authority file if required by the SSL configuration (default: None)
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:type ssl_cafile: str
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:param ssl_capath: Path to the certificate authority directory if required by the SSL configuration (default: None)
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:type ssl_capath: str
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"""
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async def send():
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websocket_args = {}
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if ssl_cert:
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websocket_args['ssl'] = get_ssl_client_context(ssl_cert=ssl_cert,
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ssl_key=ssl_key,
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ssl_cafile=ssl_cafile,
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ssl_capath=ssl_capath)
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async with websockets.connect(url, **websocket_args) as websocket:
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try:
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await websocket.send(str(msg))
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except websockets.exceptions.ConnectionClosed:
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self.logger.warning('Error on websocket {}: {}'.
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format(url, e))
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try: msg = json.dumps(msg)
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except: pass
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try: msg = Message.build(json.loads(msg))
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except: pass
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loop = get_or_create_event_loop()
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loop.run_until_complete(send())
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# vim:sw=4:ts=4:et:
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