python-plexapi/plexapi/notify.py
2017-02-20 00:37:00 -05:00

62 lines
2.2 KiB
Python

# -*- coding: utf-8 -*-
import json
import threading
from plexapi import log
from plexapi.exceptions import Unsupported
class PlexNotifier(threading.Thread):
""" Creates a websocket connection to the Plex Server to optionally recieve
notifications. These often include messages from Plex about media scans
as well as updates to currently running Transcode Sessions.
Parameters:
server (:class:`~plexapi.server.PlexServer`): PlexServer this notifier is connected to.
callback (func): Callback function to call on recieved messages.
NOTE: You need websocket-client installed in order to use this feature.
>> pip install websocket-client
"""
key = '/:/websockets/notifications'
def __init__(self, server, callback=None):
self._server = server
self._callback = callback
self._ws = None
super(PlexNotifier, self).__init__()
def run(self):
""" Starts the PlexNotifier thread. This function should not be called
directly, instead use :func:`~plexapi.server.PlexServer.startNotifier`.
"""
# try importing websocket-client package
try:
import websocket
except:
raise Unsupported('Websocket-client package is required to use this feature.')
# create the websocket connection
url = self._server.url(self.key).replace('http', 'ws')
log.info('Starting PlexNotifier: %s', url)
self._ws = websocket.WebSocketApp(url,
on_message=self._onMessage,
on_error=self._onError)
self._ws.run_forever()
def stop(self):
""" Stop the PlexNotifier thread. """
log.info('Stopping PlexNotifier.')
self._ws.close()
def _onMessage(self, ws, message):
""" Called when websocket message is recieved. """
try:
data = json.loads(message)['NotificationContainer']
log.debug('Notify: %s', data)
if self._callback:
self._callback(data)
except Exception as err:
log.error('PlexNotifier Msg Error: %s', err)
def _onError(self, ws, err):
""" Called when websocket error is recieved. """
log.error('PlexNotifier Error: %s' % err)