82 lines
2.2 KiB
Python
82 lines
2.2 KiB
Python
import json
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import socket
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import threading
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from django.conf import settings
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from websocket import WebSocketException, create_connection
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__all__ = ['EventPostingError', 'EventPoster', 'post', 'last']
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_local = threading.local()
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class EventPostingError(RuntimeError):
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pass
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class EventPoster(object):
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def __init__(self):
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self._connect()
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def _connect(self):
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self._conn = create_connection(settings.EVENT_DAEMON_POST)
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if settings.EVENT_DAEMON_KEY is not None:
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self._conn.send(json.dumps({'command': 'auth', 'key': settings.EVENT_DAEMON_KEY}))
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resp = json.loads(self._conn.recv())
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if resp['status'] == 'error':
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raise EventPostingError(resp['code'])
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def post(self, channel, message, tries=0):
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try:
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self._conn.send(json.dumps({'command': 'post', 'channel': channel, 'message': message}))
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resp = json.loads(self._conn.recv())
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if resp['status'] == 'error':
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raise EventPostingError(resp['code'])
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else:
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return resp['id']
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except WebSocketException:
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if tries > 10:
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raise
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self._connect()
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return self.post(channel, message, tries + 1)
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def last(self, tries=0):
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try:
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self._conn.send('{"command": "last-msg"}')
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resp = json.loads(self._conn.recv())
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if resp['status'] == 'error':
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raise EventPostingError(resp['code'])
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else:
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return resp['id']
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except WebSocketException:
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if tries > 10:
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raise
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self._connect()
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return self.last(tries + 1)
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def _get_poster():
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if 'poster' not in _local.__dict__:
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_local.poster = EventPoster()
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return _local.poster
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def post(channel, message):
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try:
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return _get_poster().post(channel, message)
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except (WebSocketException, socket.error):
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try:
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del _local.poster
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except AttributeError:
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pass
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return 0
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def last():
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try:
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return _get_poster().last()
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except (WebSocketException, socket.error):
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try:
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del _local.poster
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except AttributeError:
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pass
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return 0
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