361 lines
12 KiB
Python
361 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from twisted.internet import defer
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from collections import namedtuple
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from ._base import SQLBaseStore
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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from synapse.api.constants import Membership
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from synapse.types import get_domain_from_id
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import logging
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logger = logging.getLogger(__name__)
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RoomsForUser = namedtuple(
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"RoomsForUser",
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("room_id", "sender", "membership", "event_id", "stream_ordering")
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)
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class RoomMemberStore(SQLBaseStore):
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def _store_room_members_txn(self, txn, events, backfilled):
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"""Store a room member in the database.
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"""
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self._simple_insert_many_txn(
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txn,
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table="room_memberships",
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values=[
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{
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"event_id": event.event_id,
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"user_id": event.state_key,
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"sender": event.user_id,
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"room_id": event.room_id,
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"membership": event.membership,
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}
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for event in events
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]
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)
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for event in events:
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txn.call_after(self.get_rooms_for_user.invalidate, (event.state_key,))
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txn.call_after(self.get_joined_hosts_for_room.invalidate, (event.room_id,))
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txn.call_after(self.get_users_in_room.invalidate, (event.room_id,))
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txn.call_after(
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self._membership_stream_cache.entity_has_changed,
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event.state_key, event.internal_metadata.stream_ordering
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)
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txn.call_after(
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self.get_invited_rooms_for_user.invalidate, (event.state_key,)
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)
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# We update the local_invites table only if the event is "current",
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# i.e., its something that has just happened.
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# The only current event that can also be an outlier is if its an
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# invite that has come in across federation.
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is_new_state = not backfilled and (
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not event.internal_metadata.is_outlier()
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or event.internal_metadata.is_invite_from_remote()
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)
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is_mine = self.hs.is_mine_id(event.state_key)
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if is_new_state and is_mine:
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if event.membership == Membership.INVITE:
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self._simple_insert_txn(
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txn,
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table="local_invites",
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values={
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"event_id": event.event_id,
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"invitee": event.state_key,
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"inviter": event.sender,
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"room_id": event.room_id,
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"stream_id": event.internal_metadata.stream_ordering,
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}
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)
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else:
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sql = (
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"UPDATE local_invites SET stream_id = ?, replaced_by = ? WHERE"
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" room_id = ? AND invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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txn.execute(sql, (
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event.internal_metadata.stream_ordering,
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event.event_id,
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event.room_id,
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event.state_key,
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))
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@defer.inlineCallbacks
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def locally_reject_invite(self, user_id, room_id):
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sql = (
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"UPDATE local_invites SET stream_id = ?, locally_rejected = ? WHERE"
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" room_id = ? AND invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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def f(txn, stream_ordering):
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txn.execute(sql, (
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stream_ordering,
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True,
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room_id,
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user_id,
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))
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with self._stream_id_gen.get_next() as stream_ordering:
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yield self.runInteraction("locally_reject_invite", f, stream_ordering)
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@cached(max_entries=5000)
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def get_users_in_room(self, room_id):
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def f(txn):
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rows = self._get_members_rows_txn(
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txn,
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room_id=room_id,
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membership=Membership.JOIN,
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)
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return [r["user_id"] for r in rows]
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return self.runInteraction("get_users_in_room", f)
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@cached()
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def get_invited_rooms_for_user(self, user_id):
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""" Get all the rooms the user is invited to
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Args:
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user_id (str): The user ID.
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Returns:
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A deferred list of RoomsForUser.
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"""
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return self.get_rooms_for_user_where_membership_is(
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user_id, [Membership.INVITE]
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)
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@defer.inlineCallbacks
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def get_invite_for_user_in_room(self, user_id, room_id):
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"""Gets the invite for the given user and room
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Args:
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user_id (str)
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room_id (str)
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Returns:
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Deferred: Resolves to either a RoomsForUser or None if no invite was
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found.
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"""
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invites = yield self.get_invited_rooms_for_user(user_id)
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for invite in invites:
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if invite.room_id == room_id:
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defer.returnValue(invite)
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defer.returnValue(None)
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def get_rooms_for_user_where_membership_is(self, user_id, membership_list):
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""" Get all the rooms for this user where the membership for this user
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matches one in the membership list.
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Args:
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user_id (str): The user ID.
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membership_list (list): A list of synapse.api.constants.Membership
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values which the user must be in.
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Returns:
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A list of dictionary objects, with room_id, membership and sender
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defined.
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"""
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if not membership_list:
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return defer.succeed(None)
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return self.runInteraction(
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"get_rooms_for_user_where_membership_is",
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self._get_rooms_for_user_where_membership_is_txn,
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user_id, membership_list
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)
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def _get_rooms_for_user_where_membership_is_txn(self, txn, user_id,
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membership_list):
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do_invite = Membership.INVITE in membership_list
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membership_list = [m for m in membership_list if m != Membership.INVITE]
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results = []
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if membership_list:
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where_clause = "user_id = ? AND (%s) AND forgotten = 0" % (
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" OR ".join(["membership = ?" for _ in membership_list]),
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)
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args = [user_id]
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args.extend(membership_list)
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sql = (
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"SELECT m.room_id, m.sender, m.membership, m.event_id, e.stream_ordering"
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" FROM current_state_events as c"
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" INNER JOIN room_memberships as m"
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" ON m.event_id = c.event_id"
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" INNER JOIN events as e"
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" ON e.event_id = c.event_id"
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" AND m.room_id = c.room_id"
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" AND m.user_id = c.state_key"
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" WHERE %s"
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) % (where_clause,)
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txn.execute(sql, args)
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results = [
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RoomsForUser(**r) for r in self.cursor_to_dict(txn)
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]
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if do_invite:
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sql = (
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"SELECT i.room_id, inviter, i.event_id, e.stream_ordering"
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" FROM local_invites as i"
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" INNER JOIN events as e USING (event_id)"
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" WHERE invitee = ? AND locally_rejected is NULL"
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" AND replaced_by is NULL"
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)
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txn.execute(sql, (user_id,))
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results.extend(RoomsForUser(
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room_id=r["room_id"],
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sender=r["inviter"],
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event_id=r["event_id"],
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stream_ordering=r["stream_ordering"],
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membership=Membership.INVITE,
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) for r in self.cursor_to_dict(txn))
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return results
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@cachedInlineCallbacks(max_entries=5000)
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def get_joined_hosts_for_room(self, room_id):
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user_ids = yield self.get_users_in_room(room_id)
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defer.returnValue(set(get_domain_from_id(uid) for uid in user_ids))
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def _get_members_rows_txn(self, txn, room_id, membership=None, user_id=None):
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where_clause = "c.room_id = ?"
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where_values = [room_id]
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if membership:
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where_clause += " AND m.membership = ?"
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where_values.append(membership)
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if user_id:
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where_clause += " AND m.user_id = ?"
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where_values.append(user_id)
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sql = (
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"SELECT m.* FROM room_memberships as m"
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" INNER JOIN current_state_events as c"
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" ON m.event_id = c.event_id "
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" AND m.room_id = c.room_id "
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" AND m.user_id = c.state_key"
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" WHERE %(where)s"
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) % {
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"where": where_clause,
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}
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txn.execute(sql, where_values)
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rows = self.cursor_to_dict(txn)
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return rows
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@cached(max_entries=5000)
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def get_rooms_for_user(self, user_id):
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return self.get_rooms_for_user_where_membership_is(
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user_id, membership_list=[Membership.JOIN],
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)
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def forget(self, user_id, room_id):
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"""Indicate that user_id wishes to discard history for room_id."""
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def f(txn):
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sql = (
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"UPDATE"
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" room_memberships"
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" SET"
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" forgotten = 1"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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)
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txn.execute(sql, (user_id, room_id))
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txn.call_after(self.was_forgotten_at.invalidate_all)
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txn.call_after(self.did_forget.invalidate, (user_id, room_id))
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self._invalidate_cache_and_stream(
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txn, self.who_forgot_in_room, (room_id,)
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)
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return self.runInteraction("forget_membership", f)
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@cachedInlineCallbacks(num_args=2)
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def did_forget(self, user_id, room_id):
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"""Returns whether user_id has elected to discard history for room_id.
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Returns False if they have since re-joined."""
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def f(txn):
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sql = (
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"SELECT"
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" COUNT(*)"
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" FROM"
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" room_memberships"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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" AND"
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" forgotten = 0"
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)
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txn.execute(sql, (user_id, room_id))
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rows = txn.fetchall()
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return rows[0][0]
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count = yield self.runInteraction("did_forget_membership", f)
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defer.returnValue(count == 0)
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@cachedInlineCallbacks(num_args=3)
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def was_forgotten_at(self, user_id, room_id, event_id):
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"""Returns whether user_id has elected to discard history for room_id at event_id.
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event_id must be a membership event."""
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def f(txn):
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sql = (
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"SELECT"
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" forgotten"
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" FROM"
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" room_memberships"
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" WHERE"
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" user_id = ?"
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" AND"
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" room_id = ?"
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" AND"
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" event_id = ?"
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)
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txn.execute(sql, (user_id, room_id, event_id))
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rows = txn.fetchall()
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return rows[0][0]
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forgot = yield self.runInteraction("did_forget_membership_at", f)
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defer.returnValue(forgot == 1)
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@cached()
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def who_forgot_in_room(self, room_id):
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return self._simple_select_list(
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table="room_memberships",
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retcols=("user_id", "event_id"),
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keyvalues={
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"room_id": room_id,
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"forgotten": 1,
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},
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desc="who_forgot"
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)
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