777 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			777 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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| 
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| from twisted.internet import defer
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| 
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| from collections import namedtuple
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| 
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| from synapse.storage.events import EventsWorkerStore
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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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| 
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| from synapse.api.constants import Membership, EventTypes
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| from synapse.types import get_domain_from_id
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| 
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| import logging
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| import simplejson as json
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| 
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| logger = logging.getLogger(__name__)
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| 
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| 
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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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| 
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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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| 
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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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| 
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| 
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| _MEMBERSHIP_PROFILE_UPDATE_NAME = "room_membership_profile_update"
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| 
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|         Args:
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|             user_id (str)
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|             room_id (str)
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|             args = [user_id]
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|             args.extend(membership_list)
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|         return results
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| 
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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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| 
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|         Args:
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|             user_id (str)
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|         defer.returnValue(user_who_share_room)
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| 
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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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| 
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|         return self._get_joined_users_from_context(
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|             event.room_id, state_group, context.current_state_ids,
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|             event=event,
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|             context=context,
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|         )
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| 
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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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| 
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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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| 
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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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| 
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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 current_state_ids.iteritems()
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|             if key[0] == EventTypes.Member
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|         ]
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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 context.delta_ids.iteritems()
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|         defer.returnValue(users_in_room)
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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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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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| 
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|         Args:
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|             room_id (str)
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|             host (str)
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| 
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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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|         """
 | |
| 
 | |
|         # We do need to be careful to ensure that host doesn't have any wild cards
 | |
|         # in it, but we checked above for known ones and we'll check below that
 | |
|         # 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:
 | |
|             # 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):
 | |
|         state_group = state_entry.state_group
 | |
|         if not state_group:
 | |
|             # If state_group is None it means it has yet to be assigned a
 | |
|             # state group, i.e. we need to make sure that calls with a state_group
 | |
|             # of None don't hit previous cached calls with a None state_group.
 | |
|             # To do this we set the state_group to a new object as object() != object()
 | |
|             state_group = object()
 | |
| 
 | |
|         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):
 | |
|         # We don't use `state_group`, its there so that we can cache based
 | |
|         # on it. However, its important that its never None, since two current_state's
 | |
|         # with a state_group of None are likely to be different.
 | |
|         # See bulk_get_push_rules_for_room for how we work around this.
 | |
|         assert state_group is not None
 | |
| 
 | |
|         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)
 | |
| 
 | |
|     @cached(max_entries=10000, iterable=True)
 | |
|     def _get_joined_hosts_cache(self, room_id):
 | |
|         return _JoinedHostsCache(self, room_id)
 | |
| 
 | |
|     @cached()
 | |
|     def who_forgot_in_room(self, room_id):
 | |
|         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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|         )
 | |
| 
 | |
| 
 | |
| class RoomMemberStore(RoomMemberWorkerStore):
 | |
|     def __init__(self, db_conn, hs):
 | |
|         super(RoomMemberStore, self).__init__(db_conn, hs)
 | |
|         self.register_background_update_handler(
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|             _MEMBERSHIP_PROFILE_UPDATE_NAME, self._background_add_membership_profile
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|         )
 | |
| 
 | |
|     def _store_room_members_txn(self, txn, events, backfilled):
 | |
|         """Store a room member in the database.
 | |
|         """
 | |
|         self._simple_insert_many_txn(
 | |
|             txn,
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|             table="room_memberships",
 | |
|             values=[
 | |
|                 {
 | |
|                     "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.was_forgotten_at.invalidate_all)
 | |
|             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)
 | |
| 
 | |
|     @cachedInlineCallbacks(num_args=3)
 | |
|     def was_forgotten_at(self, user_id, room_id, event_id):
 | |
|         """Returns whether user_id has elected to discard history for room_id at
 | |
|         event_id.
 | |
| 
 | |
|         event_id must be a membership event."""
 | |
|         def f(txn):
 | |
|             sql = (
 | |
|                 "SELECT"
 | |
|                 "  forgotten"
 | |
|                 " FROM"
 | |
|                 "  room_memberships"
 | |
|                 " WHERE"
 | |
|                 "  user_id = ?"
 | |
|                 " AND"
 | |
|                 "  room_id = ?"
 | |
|                 " AND"
 | |
|                 "  event_id = ?"
 | |
|             )
 | |
|             txn.execute(sql, (user_id, room_id, event_id))
 | |
|             rows = txn.fetchall()
 | |
|             return rows[0][0]
 | |
|         forgot = yield self.runInteraction("did_forget_membership_at", f)
 | |
|         defer.returnValue(forgot == 1)
 | |
| 
 | |
|     @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, content
 | |
|                 FROM events
 | |
|                 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:
 | |
|                     content = json.loads(row["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 state_entry.delta_ids.iteritems():
 | |
|                     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 self.hosts_to_joined_users.itervalues())
 | |
|         defer.returnValue(frozenset(self.hosts_to_joined_users))
 | |
| 
 | |
|     def __len__(self):
 | |
|         return self._len
 |