152 lines
4.4 KiB
Python
152 lines
4.4 KiB
Python
import logging
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import json
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import requests
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import time
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import websocket
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from platypush.config import Config
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from platypush.message import Message
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from .. import Backend
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class PushbulletBackend(Backend):
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def __init__(self, token, device, **kwargs):
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super().__init__(**kwargs)
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self.token = token
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self.device_name = device
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self.pb_device_id = self.get_device_id()
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self._last_received_msg = {
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'request' : { 'body': None, 'time': None },
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'response' : { 'body': None, 'time': None },
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'event' : { 'body': None, 'time': None },
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}
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def _get_latest_push(self):
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t = int(time.time()) - 2
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try:
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response = requests.get(
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u'https://api.pushbullet.com/v2/pushes',
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headers = { 'Access-Token': self.token },
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params = {
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'modified_after': str(t),
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'active' : 'true',
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'limit' : 1,
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}
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)
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response = response.json()
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except Exception as e:
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logging.exception(e)
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raise e
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if 'pushes' in response and response['pushes']:
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return response['pushes'][0]
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else:
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return {}
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def _should_skip_last_received_msg(self, msg):
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is_duplicate=False
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last_msg = self._last_received_msg[msg['type']]
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if last_msg:
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msg = Message.parse(msg)
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if str(msg) == str(last_msg['body']) \
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and time.time() - last_msg['time'] <= 2:
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# Duplicate message sent on the Pushbullet socket within
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# two seconds, ignore it
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logging.debug('Ignoring duplicate message received on the socket')
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is_duplicate = True
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self._last_received_msg[msg['type']] = {
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'body': msg, 'time': time.time()
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}
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return is_duplicate
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def on_push(self):
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def _f(ws, data):
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try:
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try:
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data = json.loads(data) if isinstance(data, str) else push
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except Exception as e:
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logging.exception(e)
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return
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if data['type'] == 'tickle' and data['subtype'] == 'push':
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push = self._get_latest_push()
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elif data['type'] == 'push':
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push = data['push']
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else: return # Not a push notification
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logging.debug('Received push: {}'.format(push))
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body = push['body']
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try: body = json.loads(body)
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except ValueError as e: return # Some other non-JSON push
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if not self._should_skip_last_received_msg(body):
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self.on_message(body)
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except Exception as e:
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logging.exception(e)
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return
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return _f
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def on_error(self):
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def _f(ws, e):
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logging.exception(e)
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logging.info('Restarting PushBullet backend')
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ws.close()
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self._init_socket()
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return _f
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def _init_socket(self):
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self.ws = websocket.WebSocketApp(
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'wss://stream.pushbullet.com/websocket/' + self.token,
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on_message = self.on_push(),
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on_error = self.on_error())
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def get_device_id(self):
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response = requests.get(
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u'https://api.pushbullet.com/v2/devices',
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headers = { 'Access-Token': self.token },
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).json()
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devices = [dev for dev in response['devices'] if 'nickname' in dev
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and dev['nickname'] == self.device_name]
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if not devices:
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raise RuntimeError('No such Pushbullet device: {}'
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.format(self.device_name))
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return devices[0]['iden']
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def send_message(self, msg):
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requests.post(
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u'https://api.pushbullet.com/v2/pushes',
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headers = { 'Access-Token': self.token },
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json = {
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'type': 'note',
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'device_iden': self.pb_device_id,
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'body': str(msg)
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}
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).json()
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def on_stop(self):
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self.ws.close()
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def run(self):
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super().run()
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self._init_socket()
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logging.info('Initialized Pushbullet backend - device_id: {}'
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.format(self.device_name))
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self.ws.run_forever()
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# vim:sw=4:ts=4:et:
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