757 lines
28 KiB
Python
757 lines
28 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2018 New Vector 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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import logging
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from collections import namedtuple
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from six import iteritems, itervalues
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from canonicaljson import json
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from twisted.internet import defer
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from synapse.api.constants import EventTypes, Membership
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from synapse.storage.events import EventsWorkerStore
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from synapse.types import get_domain_from_id
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from synapse.util.async import Linearizer
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from synapse.util.caches import intern_string
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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from synapse.util.stringutils import to_ascii
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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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GetRoomsForUserWithStreamOrdering = namedtuple(
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"_GetRoomsForUserWithStreamOrdering",
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("room_id", "stream_ordering",)
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)
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# We store this using a namedtuple so that we save about 3x space over using a
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# dict.
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ProfileInfo = namedtuple(
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"ProfileInfo", ("avatar_url", "display_name")
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)
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_MEMBERSHIP_PROFILE_UPDATE_NAME = "room_membership_profile_update"
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class RoomMemberWorkerStore(EventsWorkerStore):
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@cachedInlineCallbacks(max_entries=100000, iterable=True, cache_context=True)
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def get_hosts_in_room(self, room_id, cache_context):
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"""Returns the set of all hosts currently in the room
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"""
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user_ids = yield self.get_users_in_room(
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room_id, on_invalidate=cache_context.invalidate,
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)
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hosts = frozenset(get_domain_from_id(user_id) for user_id in user_ids)
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defer.returnValue(hosts)
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@cached(max_entries=100000, iterable=True)
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def get_users_in_room(self, room_id):
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def f(txn):
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sql = (
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"SELECT m.user_id 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 c.type = 'm.room.member' AND c.room_id = ? AND m.membership = ?"
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)
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txn.execute(sql, (room_id, Membership.JOIN,))
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return [to_ascii(r[0]) for r in txn]
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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 c.type = 'm.room.member' AND %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=500000, iterable=True)
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def get_rooms_for_user_with_stream_ordering(self, user_id):
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"""Returns a set of room_ids the user is currently joined to
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Args:
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user_id (str)
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Returns:
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Deferred[frozenset[GetRoomsForUserWithStreamOrdering]]: Returns
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the rooms the user is in currently, along with the stream ordering
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of the most recent join for that user and room.
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"""
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rooms = yield 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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defer.returnValue(frozenset(
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GetRoomsForUserWithStreamOrdering(r.room_id, r.stream_ordering)
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for r in rooms
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))
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@defer.inlineCallbacks
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def get_rooms_for_user(self, user_id, on_invalidate=None):
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"""Returns a set of room_ids the user is currently joined to
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"""
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rooms = yield self.get_rooms_for_user_with_stream_ordering(
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user_id, on_invalidate=on_invalidate,
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)
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defer.returnValue(frozenset(r.room_id for r in rooms))
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@cachedInlineCallbacks(max_entries=500000, cache_context=True, iterable=True)
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def get_users_who_share_room_with_user(self, user_id, cache_context):
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"""Returns the set of users who share a room with `user_id`
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"""
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room_ids = yield self.get_rooms_for_user(
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user_id, on_invalidate=cache_context.invalidate,
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)
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user_who_share_room = set()
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for room_id in room_ids:
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user_ids = yield self.get_users_in_room(
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room_id, on_invalidate=cache_context.invalidate,
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)
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user_who_share_room.update(user_ids)
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defer.returnValue(user_who_share_room)
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@defer.inlineCallbacks
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def get_joined_users_from_context(self, event, context):
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state_group = context.state_group
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if not state_group:
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# If state_group is None it means it has yet to be assigned a
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# state group, i.e. we need to make sure that calls with a state_group
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# of None don't hit previous cached calls with a None state_group.
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# To do this we set the state_group to a new object as object() != object()
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state_group = object()
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current_state_ids = yield context.get_current_state_ids(self)
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result = yield self._get_joined_users_from_context(
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event.room_id, state_group, current_state_ids,
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event=event,
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context=context,
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)
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defer.returnValue(result)
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def get_joined_users_from_state(self, room_id, state_entry):
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state_group = state_entry.state_group
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if not state_group:
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# If state_group is None it means it has yet to be assigned a
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# state group, i.e. we need to make sure that calls with a state_group
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# of None don't hit previous cached calls with a None state_group.
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# To do this we set the state_group to a new object as object() != object()
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state_group = object()
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return self._get_joined_users_from_context(
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room_id, state_group, state_entry.state, context=state_entry,
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)
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@cachedInlineCallbacks(num_args=2, cache_context=True, iterable=True,
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max_entries=100000)
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def _get_joined_users_from_context(self, room_id, state_group, current_state_ids,
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cache_context, event=None, context=None):
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# We don't use `state_group`, it's there so that we can cache based
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# on it. However, it's important that it's never None, since two current_states
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# with a state_group of None are likely to be different.
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# See bulk_get_push_rules_for_room for how we work around this.
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assert state_group is not None
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users_in_room = {}
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member_event_ids = [
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e_id
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for key, e_id in iteritems(current_state_ids)
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if key[0] == EventTypes.Member
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]
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if context is not None:
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# If we have a context with a delta from a previous state group,
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# check if we also have the result from the previous group in cache.
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# If we do then we can reuse that result and simply update it with
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# any membership changes in `delta_ids`
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if context.prev_group and context.delta_ids:
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prev_res = self._get_joined_users_from_context.cache.get(
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(room_id, context.prev_group), None
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)
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if prev_res and isinstance(prev_res, dict):
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users_in_room = dict(prev_res)
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member_event_ids = [
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e_id
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for key, e_id in iteritems(context.delta_ids)
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if key[0] == EventTypes.Member
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]
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for etype, state_key in context.delta_ids:
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users_in_room.pop(state_key, None)
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# We check if we have any of the member event ids in the event cache
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# before we ask the DB
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# We don't update the event cache hit ratio as it completely throws off
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# the hit ratio counts. After all, we don't populate the cache if we
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# miss it here
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event_map = self._get_events_from_cache(
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member_event_ids,
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allow_rejected=False,
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update_metrics=False,
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)
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missing_member_event_ids = []
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for event_id in member_event_ids:
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ev_entry = event_map.get(event_id)
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if ev_entry:
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if ev_entry.event.membership == Membership.JOIN:
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users_in_room[to_ascii(ev_entry.event.state_key)] = ProfileInfo(
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display_name=to_ascii(
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ev_entry.event.content.get("displayname", None)
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),
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avatar_url=to_ascii(
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ev_entry.event.content.get("avatar_url", None)
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),
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)
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else:
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missing_member_event_ids.append(event_id)
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if missing_member_event_ids:
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rows = yield self._simple_select_many_batch(
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table="room_memberships",
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column="event_id",
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iterable=missing_member_event_ids,
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retcols=('user_id', 'display_name', 'avatar_url',),
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keyvalues={
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"membership": Membership.JOIN,
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},
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batch_size=500,
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desc="_get_joined_users_from_context",
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)
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users_in_room.update({
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to_ascii(row["user_id"]): ProfileInfo(
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avatar_url=to_ascii(row["avatar_url"]),
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display_name=to_ascii(row["display_name"]),
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)
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for row in rows
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})
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if event is not None and event.type == EventTypes.Member:
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if event.membership == Membership.JOIN:
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if event.event_id in member_event_ids:
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users_in_room[to_ascii(event.state_key)] = ProfileInfo(
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display_name=to_ascii(event.content.get("displayname", None)),
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avatar_url=to_ascii(event.content.get("avatar_url", None)),
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)
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defer.returnValue(users_in_room)
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@cachedInlineCallbacks(max_entries=10000)
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def is_host_joined(self, room_id, host):
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if '%' in host or '_' in host:
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raise Exception("Invalid host name")
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sql = """
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SELECT state_key FROM current_state_events AS c
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INNER JOIN room_memberships USING (event_id)
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WHERE membership = 'join'
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AND type = 'm.room.member'
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AND c.room_id = ?
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AND state_key LIKE ?
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LIMIT 1
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"""
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# We do need to be careful to ensure that host doesn't have any wild cards
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# in it, but we checked above for known ones and we'll check below that
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# the returned user actually has the correct domain.
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like_clause = "%:" + host
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rows = yield self._execute("is_host_joined", None, sql, room_id, like_clause)
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if not rows:
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defer.returnValue(False)
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user_id = rows[0][0]
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if get_domain_from_id(user_id) != host:
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# This can only happen if the host name has something funky in it
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raise Exception("Invalid host name")
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defer.returnValue(True)
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@cachedInlineCallbacks()
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def was_host_joined(self, room_id, host):
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"""Check whether the server is or ever was in the room.
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Args:
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room_id (str)
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host (str)
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Returns:
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Deferred: Resolves to True if the host is/was in the room, otherwise
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False.
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"""
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if '%' in host or '_' in host:
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raise Exception("Invalid host name")
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sql = """
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SELECT user_id FROM room_memberships
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WHERE room_id = ?
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AND user_id LIKE ?
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AND membership = 'join'
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LIMIT 1
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"""
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# We do need to be careful to ensure that host doesn't have any wild cards
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# in it, but we checked above for known ones and we'll check below that
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# the returned user actually has the correct domain.
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like_clause = "%:" + host
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rows = yield self._execute("was_host_joined", None, sql, room_id, like_clause)
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if not rows:
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defer.returnValue(False)
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user_id = rows[0][0]
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if get_domain_from_id(user_id) != host:
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# This can only happen if the host name has something funky in it
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raise Exception("Invalid host name")
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defer.returnValue(True)
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def get_joined_hosts(self, room_id, state_entry):
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state_group = state_entry.state_group
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if not state_group:
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# If state_group is None it means it has yet to be assigned a
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# state group, i.e. we need to make sure that calls with a state_group
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# of None don't hit previous cached calls with a None state_group.
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# To do this we set the state_group to a new object as object() != object()
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state_group = object()
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return self._get_joined_hosts(
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room_id, state_group, state_entry.state, state_entry=state_entry,
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)
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@cachedInlineCallbacks(num_args=2, max_entries=10000, iterable=True)
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# @defer.inlineCallbacks
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def _get_joined_hosts(self, room_id, state_group, current_state_ids, state_entry):
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# We don't use `state_group`, its there so that we can cache based
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# on it. However, its important that its never None, since two current_state's
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# with a state_group of None are likely to be different.
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# See bulk_get_push_rules_for_room for how we work around this.
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assert state_group is not None
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cache = self._get_joined_hosts_cache(room_id)
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joined_hosts = yield cache.get_destinations(state_entry)
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defer.returnValue(joined_hosts)
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@cached(max_entries=10000)
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def _get_joined_hosts_cache(self, room_id):
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return _JoinedHostsCache(self, room_id)
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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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class RoomMemberStore(RoomMemberWorkerStore):
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def __init__(self, db_conn, hs):
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super(RoomMemberStore, self).__init__(db_conn, hs)
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self.register_background_update_handler(
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_MEMBERSHIP_PROFILE_UPDATE_NAME, self._background_add_membership_profile
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)
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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,
|
|
"user_id": event.state_key,
|
|
"sender": event.user_id,
|
|
"room_id": event.room_id,
|
|
"membership": event.membership,
|
|
"display_name": event.content.get("displayname", None),
|
|
"avatar_url": event.content.get("avatar_url", None),
|
|
}
|
|
for event in events
|
|
]
|
|
)
|
|
|
|
for event in events:
|
|
txn.call_after(
|
|
self._membership_stream_cache.entity_has_changed,
|
|
event.state_key, event.internal_metadata.stream_ordering
|
|
)
|
|
txn.call_after(
|
|
self.get_invited_rooms_for_user.invalidate, (event.state_key,)
|
|
)
|
|
|
|
# We update the local_invites table only if the event is "current",
|
|
# i.e., its something that has just happened.
|
|
# The only current event that can also be an outlier is if its an
|
|
# invite that has come in across federation.
|
|
is_new_state = not backfilled and (
|
|
not event.internal_metadata.is_outlier()
|
|
or event.internal_metadata.is_invite_from_remote()
|
|
)
|
|
is_mine = self.hs.is_mine_id(event.state_key)
|
|
if is_new_state and is_mine:
|
|
if event.membership == Membership.INVITE:
|
|
self._simple_insert_txn(
|
|
txn,
|
|
table="local_invites",
|
|
values={
|
|
"event_id": event.event_id,
|
|
"invitee": event.state_key,
|
|
"inviter": event.sender,
|
|
"room_id": event.room_id,
|
|
"stream_id": event.internal_metadata.stream_ordering,
|
|
}
|
|
)
|
|
else:
|
|
sql = (
|
|
"UPDATE local_invites SET stream_id = ?, replaced_by = ? WHERE"
|
|
" room_id = ? AND invitee = ? AND locally_rejected is NULL"
|
|
" AND replaced_by is NULL"
|
|
)
|
|
|
|
txn.execute(sql, (
|
|
event.internal_metadata.stream_ordering,
|
|
event.event_id,
|
|
event.room_id,
|
|
event.state_key,
|
|
))
|
|
|
|
@defer.inlineCallbacks
|
|
def locally_reject_invite(self, user_id, room_id):
|
|
sql = (
|
|
"UPDATE local_invites SET stream_id = ?, locally_rejected = ? WHERE"
|
|
" room_id = ? AND invitee = ? AND locally_rejected is NULL"
|
|
" AND replaced_by is NULL"
|
|
)
|
|
|
|
def f(txn, stream_ordering):
|
|
txn.execute(sql, (
|
|
stream_ordering,
|
|
True,
|
|
room_id,
|
|
user_id,
|
|
))
|
|
|
|
with self._stream_id_gen.get_next() as stream_ordering:
|
|
yield self.runInteraction("locally_reject_invite", f, stream_ordering)
|
|
|
|
def forget(self, user_id, room_id):
|
|
"""Indicate that user_id wishes to discard history for room_id."""
|
|
def f(txn):
|
|
sql = (
|
|
"UPDATE"
|
|
" room_memberships"
|
|
" SET"
|
|
" forgotten = 1"
|
|
" WHERE"
|
|
" user_id = ?"
|
|
" AND"
|
|
" room_id = ?"
|
|
)
|
|
txn.execute(sql, (user_id, room_id))
|
|
|
|
txn.call_after(self.did_forget.invalidate, (user_id, room_id))
|
|
self._invalidate_cache_and_stream(
|
|
txn, self.who_forgot_in_room, (room_id,)
|
|
)
|
|
return self.runInteraction("forget_membership", f)
|
|
|
|
@cachedInlineCallbacks(num_args=2)
|
|
def did_forget(self, user_id, room_id):
|
|
"""Returns whether user_id has elected to discard history for room_id.
|
|
|
|
Returns False if they have since re-joined."""
|
|
def f(txn):
|
|
sql = (
|
|
"SELECT"
|
|
" COUNT(*)"
|
|
" FROM"
|
|
" room_memberships"
|
|
" WHERE"
|
|
" user_id = ?"
|
|
" AND"
|
|
" room_id = ?"
|
|
" AND"
|
|
" forgotten = 0"
|
|
)
|
|
txn.execute(sql, (user_id, room_id))
|
|
rows = txn.fetchall()
|
|
return rows[0][0]
|
|
count = yield self.runInteraction("did_forget_membership", f)
|
|
defer.returnValue(count == 0)
|
|
|
|
@defer.inlineCallbacks
|
|
def _background_add_membership_profile(self, progress, batch_size):
|
|
target_min_stream_id = progress.get(
|
|
"target_min_stream_id_inclusive", self._min_stream_order_on_start
|
|
)
|
|
max_stream_id = progress.get(
|
|
"max_stream_id_exclusive", self._stream_order_on_start + 1
|
|
)
|
|
|
|
INSERT_CLUMP_SIZE = 1000
|
|
|
|
def add_membership_profile_txn(txn):
|
|
sql = ("""
|
|
SELECT stream_ordering, event_id, events.room_id, event_json.json
|
|
FROM events
|
|
INNER JOIN event_json USING (event_id)
|
|
INNER JOIN room_memberships USING (event_id)
|
|
WHERE ? <= stream_ordering AND stream_ordering < ?
|
|
AND type = 'm.room.member'
|
|
ORDER BY stream_ordering DESC
|
|
LIMIT ?
|
|
""")
|
|
|
|
txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
|
|
|
|
rows = self.cursor_to_dict(txn)
|
|
if not rows:
|
|
return 0
|
|
|
|
min_stream_id = rows[-1]["stream_ordering"]
|
|
|
|
to_update = []
|
|
for row in rows:
|
|
event_id = row["event_id"]
|
|
room_id = row["room_id"]
|
|
try:
|
|
event_json = json.loads(row["json"])
|
|
content = event_json['content']
|
|
except Exception:
|
|
continue
|
|
|
|
display_name = content.get("displayname", None)
|
|
avatar_url = content.get("avatar_url", None)
|
|
|
|
if display_name or avatar_url:
|
|
to_update.append((
|
|
display_name, avatar_url, event_id, room_id
|
|
))
|
|
|
|
to_update_sql = ("""
|
|
UPDATE room_memberships SET display_name = ?, avatar_url = ?
|
|
WHERE event_id = ? AND room_id = ?
|
|
""")
|
|
for index in range(0, len(to_update), INSERT_CLUMP_SIZE):
|
|
clump = to_update[index:index + INSERT_CLUMP_SIZE]
|
|
txn.executemany(to_update_sql, clump)
|
|
|
|
progress = {
|
|
"target_min_stream_id_inclusive": target_min_stream_id,
|
|
"max_stream_id_exclusive": min_stream_id,
|
|
}
|
|
|
|
self._background_update_progress_txn(
|
|
txn, _MEMBERSHIP_PROFILE_UPDATE_NAME, progress
|
|
)
|
|
|
|
return len(rows)
|
|
|
|
result = yield self.runInteraction(
|
|
_MEMBERSHIP_PROFILE_UPDATE_NAME, add_membership_profile_txn
|
|
)
|
|
|
|
if not result:
|
|
yield self._end_background_update(_MEMBERSHIP_PROFILE_UPDATE_NAME)
|
|
|
|
defer.returnValue(result)
|
|
|
|
|
|
class _JoinedHostsCache(object):
|
|
"""Cache for joined hosts in a room that is optimised to handle updates
|
|
via state deltas.
|
|
"""
|
|
|
|
def __init__(self, store, room_id):
|
|
self.store = store
|
|
self.room_id = room_id
|
|
|
|
self.hosts_to_joined_users = {}
|
|
|
|
self.state_group = object()
|
|
|
|
self.linearizer = Linearizer("_JoinedHostsCache")
|
|
|
|
self._len = 0
|
|
|
|
@defer.inlineCallbacks
|
|
def get_destinations(self, state_entry):
|
|
"""Get set of destinations for a state entry
|
|
|
|
Args:
|
|
state_entry(synapse.state._StateCacheEntry)
|
|
"""
|
|
if state_entry.state_group == self.state_group:
|
|
defer.returnValue(frozenset(self.hosts_to_joined_users))
|
|
|
|
with (yield self.linearizer.queue(())):
|
|
if state_entry.state_group == self.state_group:
|
|
pass
|
|
elif state_entry.prev_group == self.state_group:
|
|
for (typ, state_key), event_id in iteritems(state_entry.delta_ids):
|
|
if typ != EventTypes.Member:
|
|
continue
|
|
|
|
host = intern_string(get_domain_from_id(state_key))
|
|
user_id = state_key
|
|
known_joins = self.hosts_to_joined_users.setdefault(host, set())
|
|
|
|
event = yield self.store.get_event(event_id)
|
|
if event.membership == Membership.JOIN:
|
|
known_joins.add(user_id)
|
|
else:
|
|
known_joins.discard(user_id)
|
|
|
|
if not known_joins:
|
|
self.hosts_to_joined_users.pop(host, None)
|
|
else:
|
|
joined_users = yield self.store.get_joined_users_from_state(
|
|
self.room_id, state_entry,
|
|
)
|
|
|
|
self.hosts_to_joined_users = {}
|
|
for user_id in joined_users:
|
|
host = intern_string(get_domain_from_id(user_id))
|
|
self.hosts_to_joined_users.setdefault(host, set()).add(user_id)
|
|
|
|
if state_entry.state_group:
|
|
self.state_group = state_entry.state_group
|
|
else:
|
|
self.state_group = object()
|
|
self._len = sum(len(v) for v in itervalues(self.hosts_to_joined_users))
|
|
defer.returnValue(frozenset(self.hosts_to_joined_users))
|
|
|
|
def __len__(self):
|
|
return self._len
|