mirror of https://gitlab.com/litecord/litecord.git
52 lines
1.8 KiB
Python
52 lines
1.8 KiB
Python
"""
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Litecord
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Copyright (C) 2018-2019 Luna Mendes
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, version 3 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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from typing import List, Set
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from logbook import Logger
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from .dispatcher import DispatcherWithState, GatewayEvent
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from .user import dispatch_user_filter
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log = Logger(__name__)
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class FriendDispatcher(DispatcherWithState[int, int, GatewayEvent, List[str]]):
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"""Friend Pub/Sub logic.
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When connecting, a client will subscribe to all their friends
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channels. If that friend updates their presence, it will be
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broadcasted through that channel to basically all their friends.
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"""
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async def dispatch_filter(self, user_id: int, filter_function, event: GatewayEvent):
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"""Dispatch an event to all of a users' friends."""
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peer_ids: Set[int] = self.state[user_id]
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sessions: List[str] = []
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for peer_id in peer_ids:
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# dispatch to the user instead of the "shards tied to a guild"
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# since relationships broadcast to all shards.
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sessions.extend(await dispatch_user_filter(peer_id, filter_function, event))
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log.info("dispatched uid={} {!r} to {} states", user_id, event, len(sessions))
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return sessions
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async def dispatch(self, user_id: int, event: GatewayEvent):
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return await self.dispatch_filter(user_id, lambda sess_id: True, event)
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