MatrixSynapse/synapse/handlers/room_member_worker.py

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# Copyright 2018-2021 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from typing import TYPE_CHECKING, List, Optional, Tuple
from synapse.handlers.room_member import NoKnownServersError, RoomMemberHandler
from synapse.replication.http.membership import (
ReplicationRemoteJoinRestServlet as ReplRemoteJoin,
ReplicationRemoteKnockRestServlet as ReplRemoteKnock,
ReplicationRemoteRejectInviteRestServlet as ReplRejectInvite,
ReplicationRemoteRescindKnockRestServlet as ReplRescindKnock,
ReplicationUserJoinedLeftRoomRestServlet as ReplJoinedLeft,
)
from synapse.types import JsonDict, Requester, UserID
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class RoomMemberWorkerHandler(RoomMemberHandler):
def __init__(self, hs: "HomeServer"):
super().__init__(hs)
self._remote_join_client = ReplRemoteJoin.make_client(hs)
self._remote_knock_client = ReplRemoteKnock.make_client(hs)
self._remote_reject_client = ReplRejectInvite.make_client(hs)
self._remote_rescind_client = ReplRescindKnock.make_client(hs)
self._notify_change_client = ReplJoinedLeft.make_client(hs)
async def _remote_join(
self,
requester: Requester,
remote_room_hosts: List[str],
room_id: str,
user: UserID,
content: dict,
) -> Tuple[str, int]:
"""Implements RoomMemberHandler._remote_join"""
if len(remote_room_hosts) == 0:
raise NoKnownServersError()
ret = await self._remote_join_client(
requester=requester,
remote_room_hosts=remote_room_hosts,
room_id=room_id,
user_id=user.to_string(),
content=content,
)
return ret["event_id"], ret["stream_id"]
async def remote_reject_invite(
self,
invite_event_id: str,
txn_id: Optional[str],
requester: Requester,
content: dict,
) -> Tuple[str, int]:
"""
Rejects an out-of-band invite received from a remote user
Implements RoomMemberHandler.remote_reject_invite
"""
ret = await self._remote_reject_client(
invite_event_id=invite_event_id,
txn_id=txn_id,
requester=requester,
content=content,
)
return ret["event_id"], ret["stream_id"]
async def remote_rescind_knock(
self,
knock_event_id: str,
txn_id: Optional[str],
requester: Requester,
content: JsonDict,
) -> Tuple[str, int]:
"""
Rescinds a local knock made on a remote room
Args:
knock_event_id: the knock event
txn_id: optional transaction ID supplied by the client
requester: user making the request, according to the access token
content: additional content to include in the leave event.
Normally an empty dict.
Returns:
A tuple containing (event_id, stream_id of the leave event)
"""
ret = await self._remote_rescind_client(
knock_event_id=knock_event_id,
txn_id=txn_id,
requester=requester,
content=content,
)
return ret["event_id"], ret["stream_id"]
async def remote_knock(
self,
requester: Requester,
remote_room_hosts: List[str],
room_id: str,
user: UserID,
content: dict,
) -> Tuple[str, int]:
"""Sends a knock to a room.
Implements RoomMemberHandler.remote_knock
"""
ret = await self._remote_knock_client(
requester=requester,
remote_room_hosts=remote_room_hosts,
room_id=room_id,
user_id=user.to_string(),
content=content,
)
return ret["event_id"], ret["stream_id"]
async def _user_left_room(self, target: UserID, room_id: str) -> None:
"""Implements RoomMemberHandler._user_left_room"""
await self._notify_change_client(
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user_id=target.to_string(), room_id=room_id, change="left"
)