Added Trello backend: closes #90
This commit is contained in:
Fabio Manganiello
parent
1de3296c85
commit
8aadd5569e
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@ -65,7 +65,8 @@ class TodoistBackend(Backend):
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return hndl
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def _on_close(self):
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def hndl():
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# noinspection PyUnusedLocal
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def hndl(ws):
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self._ws = None
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self.logger.warning('Todoist websocket connection closed')
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self._connected = False
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@ -0,0 +1,195 @@
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import json
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from threading import Event
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from typing import List
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from websocket import WebSocketApp
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from platypush.backend import Backend
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from platypush.context import get_plugin
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from platypush.message.event.trello import MoveCardEvent, NewCardEvent, ArchivedCardEvent, \
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UnarchivedCardEvent
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from platypush.plugins.trello import TrelloPlugin
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class TrelloBackend(Backend):
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"""
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This backend listens for events on a remote Trello account through websocket interface..
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Note that the Trello websocket interface
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`is not officially supported <https://community.developer.atlassian.com/t/websocket-interface/34586/4>`_
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and it requires a different token from the one you use for the Trello API (and for the Trello plugin).
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To get the websocket token:
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1. Open https://trello.com in your browser.
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2. Open the developer tools (F12), go to the Network tab, select 'Websocket' or 'WS' in the filter bar
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and refresh the page.
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3. You should see an entry in the format ``wss://trello.com/1/Session/socket?token=<token>``.
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4. Copy the ``<token>`` in the configuration of this backend.
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Requires:
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* **websocket-client** (``pip install websocket-client``)
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* The :class:`platypush.plugins.trello.TrelloPlugin` configured.
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Triggers:
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* :class:`platypush.message.event.trello.NewCardEvent` when a card is created.
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* :class:`platypush.message.event.MoveCardEvent` when a card is moved.
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* :class:`platypush.message.event.ArchivedCardEvent` when a card is archived/closed.
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* :class:`platypush.message.event.UnarchivedCardEvent` when a card is un-archived/opened.
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"""
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_websocket_url_base = 'wss://trello.com/1/Session/socket?token={token}'
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def __init__(self, boards: List[str], token: str, **kwargs):
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"""
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:param boards: List of boards to subscribe, by ID or name.
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:param token: Trello web client API token.
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"""
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super().__init__(**kwargs)
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self._plugin: TrelloPlugin = get_plugin('trello')
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self.token = token
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self._req_id = 0
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self._boards_by_id = {}
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self._boards_by_name = {}
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for b in boards:
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b = self._plugin.get_board(b).board
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self._boards_by_id[b.id] = b
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self._boards_by_name[b.name] = b
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self.url = self._websocket_url_base.format(token=self.token)
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self._connected = Event()
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self._items = {}
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self._event_handled = False
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def _initialize_connection(self, ws: WebSocketApp):
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for board_id in self._boards_by_id.keys():
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self._send(ws, {
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'type': 'subscribe',
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'modelType': 'Board',
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'idModel': board_id,
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'tags': ['clientActions', 'updates'],
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'invitationTokens': [],
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})
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self.logger.info('Trello boards subscribed')
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def _on_msg(self):
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# noinspection PyUnusedLocal
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def hndl(ws: WebSocketApp, msg):
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if not msg:
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# Reply back with an empty message when the server sends an empty message
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ws.send('')
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return
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# noinspection PyBroadException
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try:
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msg = json.loads(msg)
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except:
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self.logger.warning('Received invalid JSON message from Trello: {}'.format(msg))
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return
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if 'error' in msg:
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self.logger.warning('Trello error: {}'.format(msg['error']))
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return
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if msg.get('reqid') == 0:
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self.logger.debug('Ping response received, subscribing boards')
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self._initialize_connection(ws)
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return
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notify = msg.get('notify')
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if not notify:
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return
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if notify['event'] != 'updateModels' or notify['typeName'] != 'Action':
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return
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for delta in notify['deltas']:
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args = {
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'card_id': delta['data']['card']['id'],
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'card_name': delta['data']['card']['name'],
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'list_id': (delta['data'].get('list') or delta['data'].get('listAfter', {})).get('id'),
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'list_name': (delta['data'].get('list') or delta['data'].get('listAfter', {})).get('name'),
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'board_id': delta['data']['board']['id'],
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'board_name': delta['data']['board']['name'],
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'closed': delta.get('closed'),
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'member_id': delta['memberCreator']['id'],
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'member_username': delta['memberCreator']['username'],
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'member_fullname': delta['memberCreator']['fullName'],
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'date': delta['date'],
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}
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if delta.get('type') == 'createCard':
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self.bus.post(NewCardEvent(**args))
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elif delta.get('type') == 'updateCard':
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if 'listBefore' in delta['data']:
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args.update({
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'old_list_id': delta['data']['listBefore']['id'],
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'old_list_name': delta['data']['listBefore']['name'],
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})
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self.bus.post(MoveCardEvent(**args))
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elif 'closed' in delta['data'].get('old', {}):
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cls = UnarchivedCardEvent if delta['data']['old']['closed'] else ArchivedCardEvent
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self.bus.post(cls(**args))
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return hndl
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def _on_error(self):
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# noinspection PyUnusedLocal
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def hndl(ws: WebSocketApp, error):
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self.logger.warning('Trello websocket error: {}'.format(error))
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return hndl
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def _on_close(self):
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# noinspection PyUnusedLocal
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def hndl(ws: WebSocketApp):
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self.logger.warning('Trello websocket connection closed')
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self._connected.clear()
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self._req_id = 0
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while True:
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try:
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self._connect()
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self._connected.wait(timeout=20)
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break
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except TimeoutError:
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continue
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return hndl
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def _on_open(self):
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# noinspection PyUnusedLocal
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def hndl(ws: WebSocketApp):
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self._connected.set()
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self._send(ws, {'type': 'ping'})
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self.logger.info('Trello websocket connected')
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return hndl
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def _send(self, ws: WebSocketApp, msg: dict):
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msg['reqid'] = self._req_id
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ws.send(json.dumps(msg))
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self._req_id += 1
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def _connect(self) -> WebSocketApp:
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return WebSocketApp(self.url,
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on_open=self._on_open(),
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on_message=self._on_msg(),
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on_error=self._on_error(),
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on_close=self._on_close())
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def run(self):
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super().run()
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self.logger.info('Started Todoist backend')
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ws = self._connect()
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ws.run_forever()
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# vim:sw=4:ts=4:et:
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@ -0,0 +1,75 @@
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import datetime
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from platypush.message.event import Event
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class TrelloEvent(Event):
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pass
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class CardEvent(TrelloEvent):
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def __init__(self,
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card_id: str,
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card_name: str,
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list_id: str,
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list_name: str,
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board_id: str,
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board_name: str,
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closed: bool,
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member_id: str,
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member_username: str,
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member_fullname: str,
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date: datetime.datetime,
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*args, **kwargs):
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super().__init__(*args,
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card_id=card_id,
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card_name=card_name,
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list_id=list_id,
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list_name=list_name,
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board_id=board_id,
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board_name=board_name,
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closed=closed,
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member_id=member_id,
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member_username=member_username,
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member_fullname=member_fullname,
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date=date,
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**kwargs)
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class NewCardEvent(CardEvent):
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"""
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Event triggered when a card is created.
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"""
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class MoveCardEvent(CardEvent):
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"""
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Event triggered when a card is moved to another list.
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"""
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def __init__(self, old_list_id: str, old_list_name: str, *args, **kwargs):
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super().__init__(*args, old_list_id=old_list_id, old_list_name=old_list_name, **kwargs)
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class ArchivedCardEvent(CardEvent):
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"""
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Event triggered when a card is archived.
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"""
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def __init__(self, *args, **kwargs):
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kwargs['old_closed'] = False
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super().__init__(*args, **kwargs)
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class UnarchivedCardEvent(CardEvent):
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"""
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Event triggered when a card is un-archived.
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"""
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def __init__(self, *args, **kwargs):
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kwargs['old_closed'] = True
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super().__init__(*args, **kwargs)
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# vim:sw=4:ts=4:et:
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@ -37,6 +37,7 @@ class TrelloBoard(Mapping):
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class TrelloBoardResponse(TrelloResponse):
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def __init__(self, board: TrelloBoard, **kwargs):
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super().__init__(output=board, **kwargs)
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self.board = board
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class TrelloBoardsResponse(TrelloResponse):
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