1097 lines
40 KiB
Python
1097 lines
40 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 typing import TYPE_CHECKING, Dict, FrozenSet, Iterable, List, Optional, Set, Tuple
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from synapse.api.constants import EventTypes, Membership
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from synapse.events import EventBase
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from synapse.events.snapshot import EventContext
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from synapse.metrics import LaterGauge
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from synapse.metrics.background_process_metrics import (
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run_as_background_process,
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wrap_as_background_process,
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)
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from synapse.storage._base import SQLBaseStore, db_to_json, make_in_list_sql_clause
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from synapse.storage.database import DatabasePool
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from synapse.storage.databases.main.events_worker import EventsWorkerStore
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from synapse.storage.engines import Sqlite3Engine
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from synapse.storage.roommember import (
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GetRoomsForUserWithStreamOrdering,
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MemberSummary,
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ProfileInfo,
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RoomsForUser,
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)
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from synapse.types import Collection, PersistedEventPosition, get_domain_from_id
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from synapse.util.async_helpers import Linearizer
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from synapse.util.caches import intern_string
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from synapse.util.caches.descriptors import _CacheContext, cached, cachedList
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from synapse.util.metrics import Measure
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if TYPE_CHECKING:
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from synapse.state import _StateCacheEntry
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logger = logging.getLogger(__name__)
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_MEMBERSHIP_PROFILE_UPDATE_NAME = "room_membership_profile_update"
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_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME = "current_state_events_membership"
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class RoomMemberWorkerStore(EventsWorkerStore):
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def __init__(self, database: DatabasePool, db_conn, hs):
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super().__init__(database, db_conn, hs)
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# Is the current_state_events.membership up to date? Or is the
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# background update still running?
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self._current_state_events_membership_up_to_date = False
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txn = db_conn.cursor(
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txn_name="_check_safe_current_state_events_membership_updated"
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)
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self._check_safe_current_state_events_membership_updated_txn(txn)
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txn.close()
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if (
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self.hs.config.run_background_tasks
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and self.hs.config.metrics_flags.known_servers
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):
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self._known_servers_count = 1
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self.hs.get_clock().looping_call(
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self._count_known_servers,
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60 * 1000,
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)
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self.hs.get_clock().call_later(
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1000,
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self._count_known_servers,
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)
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LaterGauge(
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"synapse_federation_known_servers",
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"",
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[],
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lambda: self._known_servers_count,
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)
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@wrap_as_background_process("_count_known_servers")
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async def _count_known_servers(self):
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"""
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Count the servers that this server knows about.
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The statistic is stored on the class for the
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`synapse_federation_known_servers` LaterGauge to collect.
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"""
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def _transact(txn):
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if isinstance(self.database_engine, Sqlite3Engine):
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query = """
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SELECT COUNT(DISTINCT substr(out.user_id, pos+1))
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FROM (
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SELECT rm.user_id as user_id, instr(rm.user_id, ':')
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AS pos FROM room_memberships as rm
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INNER JOIN current_state_events as c ON rm.event_id = c.event_id
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WHERE c.type = 'm.room.member'
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) as out
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"""
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else:
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query = """
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SELECT COUNT(DISTINCT split_part(state_key, ':', 2))
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FROM current_state_events
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WHERE type = 'm.room.member' AND membership = 'join';
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"""
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txn.execute(query)
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return list(txn)[0][0]
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count = await self.db_pool.runInteraction("get_known_servers", _transact)
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# We always know about ourselves, even if we have nothing in
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# room_memberships (for example, the server is new).
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self._known_servers_count = max([count, 1])
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return self._known_servers_count
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def _check_safe_current_state_events_membership_updated_txn(self, txn):
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"""Checks if it is safe to assume the new current_state_events
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membership column is up to date
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"""
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pending_update = self.db_pool.simple_select_one_txn(
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txn,
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table="background_updates",
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keyvalues={"update_name": _CURRENT_STATE_MEMBERSHIP_UPDATE_NAME},
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retcols=["update_name"],
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allow_none=True,
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)
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self._current_state_events_membership_up_to_date = not pending_update
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# If the update is still running, reschedule to run.
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if pending_update:
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self._clock.call_later(
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15.0,
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run_as_background_process,
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"_check_safe_current_state_events_membership_updated",
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self.db_pool.runInteraction,
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"_check_safe_current_state_events_membership_updated",
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self._check_safe_current_state_events_membership_updated_txn,
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)
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@cached(max_entries=100000, iterable=True)
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async def get_users_in_room(self, room_id: str) -> List[str]:
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return await self.db_pool.runInteraction(
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"get_users_in_room", self.get_users_in_room_txn, room_id
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)
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def get_users_in_room_txn(self, txn, room_id: str) -> List[str]:
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# If we can assume current_state_events.membership is up to date
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# then we can avoid a join, which is a Very Good Thing given how
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# frequently this function gets called.
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if self._current_state_events_membership_up_to_date:
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sql = """
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SELECT state_key FROM current_state_events
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WHERE type = 'm.room.member' AND room_id = ? AND membership = ?
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"""
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else:
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sql = """
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SELECT state_key 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 [r[0] for r in txn]
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@cached(max_entries=100000)
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async def get_room_summary(self, room_id: str) -> Dict[str, MemberSummary]:
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"""Get the details of a room roughly suitable for use by the room
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summary extension to /sync. Useful when lazy loading room members.
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Args:
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room_id: The room ID to query
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Returns:
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dict of membership states, pointing to a MemberSummary named tuple.
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"""
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def _get_room_summary_txn(txn):
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# first get counts.
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# We do this all in one transaction to keep the cache small.
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# FIXME: get rid of this when we have room_stats
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# If we can assume current_state_events.membership is up to date
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# then we can avoid a join, which is a Very Good Thing given how
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# frequently this function gets called.
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if self._current_state_events_membership_up_to_date:
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# Note, rejected events will have a null membership field, so
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# we we manually filter them out.
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sql = """
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SELECT count(*), membership FROM current_state_events
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WHERE type = 'm.room.member' AND room_id = ?
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AND membership IS NOT NULL
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GROUP BY membership
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"""
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else:
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sql = """
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SELECT count(*), m.membership 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 = ?
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GROUP BY m.membership
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"""
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txn.execute(sql, (room_id,))
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res = {}
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for count, membership in txn:
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summary = res.setdefault(membership, MemberSummary([], count))
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# we order by membership and then fairly arbitrarily by event_id so
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# heroes are consistent
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if self._current_state_events_membership_up_to_date:
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# Note, rejected events will have a null membership field, so
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# we we manually filter them out.
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sql = """
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SELECT state_key, membership, event_id
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FROM current_state_events
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WHERE type = 'm.room.member' AND room_id = ?
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AND membership IS NOT NULL
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ORDER BY
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CASE membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC,
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event_id ASC
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LIMIT ?
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"""
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else:
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sql = """
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SELECT c.state_key, m.membership, c.event_id
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FROM room_memberships as m
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INNER JOIN current_state_events as c USING (room_id, event_id)
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WHERE c.type = 'm.room.member' AND c.room_id = ?
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ORDER BY
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CASE m.membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC,
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c.event_id ASC
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LIMIT ?
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"""
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# 6 is 5 (number of heroes) plus 1, in case one of them is the calling user.
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txn.execute(sql, (room_id, Membership.JOIN, Membership.INVITE, 6))
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for user_id, membership, event_id in txn:
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summary = res[membership]
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# we will always have a summary for this membership type at this
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# point given the summary currently contains the counts.
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members = summary.members
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members.append((user_id, event_id))
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return res
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return await self.db_pool.runInteraction(
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"get_room_summary", _get_room_summary_txn
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)
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@cached()
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async def get_invited_rooms_for_local_user(self, user_id: str) -> RoomsForUser:
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"""Get all the rooms the *local* user is invited to.
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Args:
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user_id: The user ID.
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Returns:
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A list of RoomsForUser.
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"""
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return await self.get_rooms_for_local_user_where_membership_is(
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user_id, [Membership.INVITE]
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)
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async def get_invite_for_local_user_in_room(
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self, user_id: str, room_id: str
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) -> Optional[RoomsForUser]:
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"""Gets the invite for the given *local* user and room.
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Args:
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user_id: The user ID to find the invite of.
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room_id: The room to user was invited to.
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Returns:
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Either a RoomsForUser or None if no invite was found.
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"""
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invites = await self.get_invited_rooms_for_local_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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return invite
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return None
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async def get_rooms_for_local_user_where_membership_is(
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self, user_id: str, membership_list: Collection[str]
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) -> List[RoomsForUser]:
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"""Get all the rooms for this *local* user where the membership for this user
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matches one in the membership list.
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Filters out forgotten rooms.
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Args:
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user_id: The user ID.
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membership_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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The RoomsForUser that the user matches the membership types.
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"""
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if not membership_list:
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return []
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rooms = await self.db_pool.runInteraction(
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"get_rooms_for_local_user_where_membership_is",
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self._get_rooms_for_local_user_where_membership_is_txn,
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user_id,
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membership_list,
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)
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# Now we filter out forgotten rooms
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forgotten_rooms = await self.get_forgotten_rooms_for_user(user_id)
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return [room for room in rooms if room.room_id not in forgotten_rooms]
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def _get_rooms_for_local_user_where_membership_is_txn(
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self, txn, user_id: str, membership_list: List[str]
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) -> List[RoomsForUser]:
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# Paranoia check.
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if not self.hs.is_mine_id(user_id):
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raise Exception(
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"Cannot call 'get_rooms_for_local_user_where_membership_is' on non-local user %r"
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% (user_id,),
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)
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clause, args = make_in_list_sql_clause(
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self.database_engine, "c.membership", membership_list
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)
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sql = """
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SELECT room_id, e.sender, c.membership, event_id, e.stream_ordering
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FROM local_current_membership AS c
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INNER JOIN events AS e USING (room_id, event_id)
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WHERE
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user_id = ?
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AND %s
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""" % (
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clause,
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)
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txn.execute(sql, (user_id, *args))
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results = [RoomsForUser(**r) for r in self.db_pool.cursor_to_dict(txn)]
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return results
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async def get_local_current_membership_for_user_in_room(
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self, user_id: str, room_id: str
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) -> Tuple[Optional[str], Optional[str]]:
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"""Retrieve the current local membership state and event ID for a user in a room.
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Args:
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user_id: The ID of the user.
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room_id: The ID of the room.
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Returns:
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A tuple of (membership_type, event_id). Both will be None if a
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room_id/user_id pair is not found.
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"""
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# Paranoia check.
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if not self.hs.is_mine_id(user_id):
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raise Exception(
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"Cannot call 'get_local_current_membership_for_user_in_room' on "
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"non-local user %s" % (user_id,),
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)
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results_dict = await self.db_pool.simple_select_one(
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"local_current_membership",
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{"room_id": room_id, "user_id": user_id},
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("membership", "event_id"),
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allow_none=True,
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desc="get_local_current_membership_for_user_in_room",
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)
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if not results_dict:
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return None, None
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return results_dict.get("membership"), results_dict.get("event_id")
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@cached(max_entries=500000, iterable=True)
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async def get_rooms_for_user_with_stream_ordering(
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self, user_id: str
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) -> FrozenSet[GetRoomsForUserWithStreamOrdering]:
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"""Returns a set of room_ids the user is currently joined to.
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If a remote user only returns rooms this server is currently
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participating in.
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Args:
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user_id
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Returns:
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Returns the rooms the user is in currently, along with the stream
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ordering of the most recent join for that user and room.
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"""
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return await self.db_pool.runInteraction(
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"get_rooms_for_user_with_stream_ordering",
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self._get_rooms_for_user_with_stream_ordering_txn,
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user_id,
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)
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def _get_rooms_for_user_with_stream_ordering_txn(
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self, txn, user_id: str
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) -> FrozenSet[GetRoomsForUserWithStreamOrdering]:
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# We use `current_state_events` here and not `local_current_membership`
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# as a) this gets called with remote users and b) this only gets called
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# for rooms the server is participating in.
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if self._current_state_events_membership_up_to_date:
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sql = """
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SELECT room_id, e.instance_name, e.stream_ordering
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FROM current_state_events AS c
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INNER JOIN events AS e USING (room_id, event_id)
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WHERE
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c.type = 'm.room.member'
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AND state_key = ?
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AND c.membership = ?
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"""
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else:
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sql = """
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SELECT room_id, e.instance_name, e.stream_ordering
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FROM current_state_events AS c
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INNER JOIN room_memberships AS m USING (room_id, event_id)
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INNER JOIN events AS e USING (room_id, event_id)
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WHERE
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c.type = 'm.room.member'
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AND state_key = ?
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AND m.membership = ?
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"""
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txn.execute(sql, (user_id, Membership.JOIN))
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return frozenset(
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GetRoomsForUserWithStreamOrdering(
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room_id, PersistedEventPosition(instance, stream_id)
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)
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for room_id, instance, stream_id in txn
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)
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async def get_users_server_still_shares_room_with(
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self, user_ids: Collection[str]
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) -> Set[str]:
|
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"""Given a list of users return the set that the server still share a
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room with.
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"""
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|
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if not user_ids:
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return set()
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|
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def _get_users_server_still_shares_room_with_txn(txn):
|
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sql = """
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SELECT state_key FROM current_state_events
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WHERE
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type = 'm.room.member'
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AND membership = 'join'
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AND %s
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GROUP BY state_key
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"""
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clause, args = make_in_list_sql_clause(
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self.database_engine, "state_key", user_ids
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)
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txn.execute(sql % (clause,), args)
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return {row[0] for row in txn}
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return await self.db_pool.runInteraction(
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"get_users_server_still_shares_room_with",
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_get_users_server_still_shares_room_with_txn,
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)
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async def get_rooms_for_user(self, user_id: str, on_invalidate=None):
|
|
"""Returns a set of room_ids the user is currently joined to.
|
|
|
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If a remote user only returns rooms this server is currently
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participating in.
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"""
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|
rooms = await 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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return frozenset(r.room_id for r in rooms)
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|
|
@cached(max_entries=500000, cache_context=True, iterable=True)
|
|
async def get_users_who_share_room_with_user(
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|
self, user_id: str, cache_context: _CacheContext
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) -> Set[str]:
|
|
"""Returns the set of users who share a room with `user_id`"""
|
|
room_ids = await self.get_rooms_for_user(
|
|
user_id, on_invalidate=cache_context.invalidate
|
|
)
|
|
|
|
user_who_share_room = set()
|
|
for room_id in room_ids:
|
|
user_ids = await self.get_users_in_room(
|
|
room_id, on_invalidate=cache_context.invalidate
|
|
)
|
|
user_who_share_room.update(user_ids)
|
|
|
|
return user_who_share_room
|
|
|
|
async def get_joined_users_from_context(
|
|
self, event: EventBase, context: EventContext
|
|
):
|
|
state_group = context.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()
|
|
|
|
current_state_ids = await context.get_current_state_ids()
|
|
return await self._get_joined_users_from_context(
|
|
event.room_id, state_group, current_state_ids, event=event, context=context
|
|
)
|
|
|
|
async def get_joined_users_from_state(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()
|
|
|
|
with Measure(self._clock, "get_joined_users_from_state"):
|
|
return await self._get_joined_users_from_context(
|
|
room_id, state_group, state_entry.state, context=state_entry
|
|
)
|
|
|
|
@cached(num_args=2, cache_context=True, iterable=True, max_entries=100000)
|
|
async def _get_joined_users_from_context(
|
|
self,
|
|
room_id,
|
|
state_group,
|
|
current_state_ids,
|
|
cache_context,
|
|
event=None,
|
|
context=None,
|
|
):
|
|
# We don't use `state_group`, it's there so that we can cache based
|
|
# on it. However, it's important that it's never None, since two current_states
|
|
# with a state_group of None are likely to be different.
|
|
assert state_group is not None
|
|
|
|
users_in_room = {}
|
|
member_event_ids = [
|
|
e_id
|
|
for key, e_id in current_state_ids.items()
|
|
if key[0] == EventTypes.Member
|
|
]
|
|
|
|
if context is not None:
|
|
# If we have a context with a delta from a previous state group,
|
|
# check if we also have the result from the previous group in cache.
|
|
# If we do then we can reuse that result and simply update it with
|
|
# any membership changes in `delta_ids`
|
|
if context.prev_group and context.delta_ids:
|
|
prev_res = self._get_joined_users_from_context.cache.get_immediate(
|
|
(room_id, context.prev_group), None
|
|
)
|
|
if prev_res and isinstance(prev_res, dict):
|
|
users_in_room = dict(prev_res)
|
|
member_event_ids = [
|
|
e_id
|
|
for key, e_id in context.delta_ids.items()
|
|
if key[0] == EventTypes.Member
|
|
]
|
|
for etype, state_key in context.delta_ids:
|
|
if etype == EventTypes.Member:
|
|
users_in_room.pop(state_key, None)
|
|
|
|
# We check if we have any of the member event ids in the event cache
|
|
# before we ask the DB
|
|
|
|
# We don't update the event cache hit ratio as it completely throws off
|
|
# the hit ratio counts. After all, we don't populate the cache if we
|
|
# miss it here
|
|
event_map = self._get_events_from_cache(
|
|
member_event_ids, allow_rejected=False, update_metrics=False
|
|
)
|
|
|
|
missing_member_event_ids = []
|
|
for event_id in member_event_ids:
|
|
ev_entry = event_map.get(event_id)
|
|
if ev_entry:
|
|
if ev_entry.event.membership == Membership.JOIN:
|
|
users_in_room[ev_entry.event.state_key] = ProfileInfo(
|
|
display_name=ev_entry.event.content.get("displayname", None),
|
|
avatar_url=ev_entry.event.content.get("avatar_url", None),
|
|
)
|
|
else:
|
|
missing_member_event_ids.append(event_id)
|
|
|
|
if missing_member_event_ids:
|
|
event_to_memberships = await self._get_joined_profiles_from_event_ids(
|
|
missing_member_event_ids
|
|
)
|
|
users_in_room.update((row for row in event_to_memberships.values() if row))
|
|
|
|
if event is not None and event.type == EventTypes.Member:
|
|
if event.membership == Membership.JOIN:
|
|
if event.event_id in member_event_ids:
|
|
users_in_room[event.state_key] = ProfileInfo(
|
|
display_name=event.content.get("displayname", None),
|
|
avatar_url=event.content.get("avatar_url", None),
|
|
)
|
|
|
|
return users_in_room
|
|
|
|
@cached(max_entries=10000)
|
|
def _get_joined_profile_from_event_id(self, event_id):
|
|
raise NotImplementedError()
|
|
|
|
@cachedList(
|
|
cached_method_name="_get_joined_profile_from_event_id",
|
|
list_name="event_ids",
|
|
)
|
|
async def _get_joined_profiles_from_event_ids(self, event_ids: Iterable[str]):
|
|
"""For given set of member event_ids check if they point to a join
|
|
event and if so return the associated user and profile info.
|
|
|
|
Args:
|
|
event_ids: The member event IDs to lookup
|
|
|
|
Returns:
|
|
dict[str, Tuple[str, ProfileInfo]|None]: Map from event ID
|
|
to `user_id` and ProfileInfo (or None if not join event).
|
|
"""
|
|
|
|
rows = await self.db_pool.simple_select_many_batch(
|
|
table="room_memberships",
|
|
column="event_id",
|
|
iterable=event_ids,
|
|
retcols=("user_id", "display_name", "avatar_url", "event_id"),
|
|
keyvalues={"membership": Membership.JOIN},
|
|
batch_size=500,
|
|
desc="_get_membership_from_event_ids",
|
|
)
|
|
|
|
return {
|
|
row["event_id"]: (
|
|
row["user_id"],
|
|
ProfileInfo(
|
|
avatar_url=row["avatar_url"], display_name=row["display_name"]
|
|
),
|
|
)
|
|
for row in rows
|
|
}
|
|
|
|
@cached(max_entries=10000)
|
|
async def is_host_joined(self, room_id: str, host: str) -> bool:
|
|
if "%" in host or "_" in host:
|
|
raise Exception("Invalid host name")
|
|
|
|
sql = """
|
|
SELECT state_key FROM current_state_events AS c
|
|
INNER JOIN room_memberships AS m USING (event_id)
|
|
WHERE m.membership = 'join'
|
|
AND type = 'm.room.member'
|
|
AND c.room_id = ?
|
|
AND state_key LIKE ?
|
|
LIMIT 1
|
|
"""
|
|
|
|
# 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.
|
|
like_clause = "%:" + host
|
|
|
|
rows = await self.db_pool.execute(
|
|
"is_host_joined", None, sql, room_id, like_clause
|
|
)
|
|
|
|
if not rows:
|
|
return False
|
|
|
|
user_id = rows[0][0]
|
|
if get_domain_from_id(user_id) != host:
|
|
# This can only happen if the host name has something funky in it
|
|
raise Exception("Invalid host name")
|
|
|
|
return True
|
|
|
|
async def get_joined_hosts(self, room_id: str, 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()
|
|
|
|
with Measure(self._clock, "get_joined_hosts"):
|
|
return await self._get_joined_hosts(
|
|
room_id, state_group, state_entry.state, state_entry=state_entry
|
|
)
|
|
|
|
@cached(num_args=2, max_entries=10000, iterable=True)
|
|
async 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.
|
|
assert state_group is not None
|
|
|
|
cache = await self._get_joined_hosts_cache(room_id)
|
|
return await cache.get_destinations(state_entry)
|
|
|
|
@cached(max_entries=10000)
|
|
def _get_joined_hosts_cache(self, room_id: str) -> "_JoinedHostsCache":
|
|
return _JoinedHostsCache(self, room_id)
|
|
|
|
@cached(num_args=2)
|
|
async def did_forget(self, user_id: str, room_id: str) -> bool:
|
|
"""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 = await self.db_pool.runInteraction("did_forget_membership", f)
|
|
return count == 0
|
|
|
|
@cached()
|
|
async def get_forgotten_rooms_for_user(self, user_id: str) -> Set[str]:
|
|
"""Gets all rooms the user has forgotten.
|
|
|
|
Args:
|
|
user_id: The user ID to query the rooms of.
|
|
|
|
Returns:
|
|
The forgotten rooms.
|
|
"""
|
|
|
|
def _get_forgotten_rooms_for_user_txn(txn):
|
|
# This is a slightly convoluted query that first looks up all rooms
|
|
# that the user has forgotten in the past, then rechecks that list
|
|
# to see if any have subsequently been updated. This is done so that
|
|
# we can use a partial index on `forgotten = 1` on the assumption
|
|
# that few users will actually forget many rooms.
|
|
#
|
|
# Note that a room is considered "forgotten" if *all* membership
|
|
# events for that user and room have the forgotten field set (as
|
|
# when a user forgets a room we update all rows for that user and
|
|
# room, not just the current one).
|
|
sql = """
|
|
SELECT room_id, (
|
|
SELECT count(*) FROM room_memberships
|
|
WHERE room_id = m.room_id AND user_id = m.user_id AND forgotten = 0
|
|
) AS count
|
|
FROM room_memberships AS m
|
|
WHERE user_id = ? AND forgotten = 1
|
|
GROUP BY room_id, user_id;
|
|
"""
|
|
txn.execute(sql, (user_id,))
|
|
return {row[0] for row in txn if row[1] == 0}
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"get_forgotten_rooms_for_user", _get_forgotten_rooms_for_user_txn
|
|
)
|
|
|
|
async def get_rooms_user_has_been_in(self, user_id: str) -> Set[str]:
|
|
"""Get all rooms that the user has ever been in.
|
|
|
|
Args:
|
|
user_id: The user ID to get the rooms of.
|
|
|
|
Returns:
|
|
Set of room IDs.
|
|
"""
|
|
|
|
room_ids = await self.db_pool.simple_select_onecol(
|
|
table="room_memberships",
|
|
keyvalues={"membership": Membership.JOIN, "user_id": user_id},
|
|
retcol="room_id",
|
|
desc="get_rooms_user_has_been_in",
|
|
)
|
|
|
|
return set(room_ids)
|
|
|
|
async def get_membership_from_event_ids(
|
|
self, member_event_ids: Iterable[str]
|
|
) -> List[dict]:
|
|
"""Get user_id and membership of a set of event IDs."""
|
|
|
|
return await self.db_pool.simple_select_many_batch(
|
|
table="room_memberships",
|
|
column="event_id",
|
|
iterable=member_event_ids,
|
|
retcols=("user_id", "membership", "event_id"),
|
|
keyvalues={},
|
|
batch_size=500,
|
|
desc="get_membership_from_event_ids",
|
|
)
|
|
|
|
async def is_local_host_in_room_ignoring_users(
|
|
self, room_id: str, ignore_users: Collection[str]
|
|
) -> bool:
|
|
"""Check if there are any local users, excluding those in the given
|
|
list, in the room.
|
|
"""
|
|
|
|
clause, args = make_in_list_sql_clause(
|
|
self.database_engine, "user_id", ignore_users
|
|
)
|
|
|
|
sql = """
|
|
SELECT 1 FROM local_current_membership
|
|
WHERE
|
|
room_id = ? AND membership = ?
|
|
AND NOT (%s)
|
|
LIMIT 1
|
|
""" % (
|
|
clause,
|
|
)
|
|
|
|
def _is_local_host_in_room_ignoring_users_txn(txn):
|
|
txn.execute(sql, (room_id, Membership.JOIN, *args))
|
|
|
|
return bool(txn.fetchone())
|
|
|
|
return await self.db_pool.runInteraction(
|
|
"is_local_host_in_room_ignoring_users",
|
|
_is_local_host_in_room_ignoring_users_txn,
|
|
)
|
|
|
|
|
|
class RoomMemberBackgroundUpdateStore(SQLBaseStore):
|
|
def __init__(self, database: DatabasePool, db_conn, hs):
|
|
super().__init__(database, db_conn, hs)
|
|
self.db_pool.updates.register_background_update_handler(
|
|
_MEMBERSHIP_PROFILE_UPDATE_NAME, self._background_add_membership_profile
|
|
)
|
|
self.db_pool.updates.register_background_update_handler(
|
|
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME,
|
|
self._background_current_state_membership,
|
|
)
|
|
self.db_pool.updates.register_background_index_update(
|
|
"room_membership_forgotten_idx",
|
|
index_name="room_memberships_user_room_forgotten",
|
|
table="room_memberships",
|
|
columns=["user_id", "room_id"],
|
|
where_clause="forgotten = 1",
|
|
)
|
|
|
|
async 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
|
|
)
|
|
|
|
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.db_pool.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 = db_to_json(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 = ?
|
|
"""
|
|
txn.execute_batch(to_update_sql, to_update)
|
|
|
|
progress = {
|
|
"target_min_stream_id_inclusive": target_min_stream_id,
|
|
"max_stream_id_exclusive": min_stream_id,
|
|
}
|
|
|
|
self.db_pool.updates._background_update_progress_txn(
|
|
txn, _MEMBERSHIP_PROFILE_UPDATE_NAME, progress
|
|
)
|
|
|
|
return len(rows)
|
|
|
|
result = await self.db_pool.runInteraction(
|
|
_MEMBERSHIP_PROFILE_UPDATE_NAME, add_membership_profile_txn
|
|
)
|
|
|
|
if not result:
|
|
await self.db_pool.updates._end_background_update(
|
|
_MEMBERSHIP_PROFILE_UPDATE_NAME
|
|
)
|
|
|
|
return result
|
|
|
|
async def _background_current_state_membership(self, progress, batch_size):
|
|
"""Update the new membership column on current_state_events.
|
|
|
|
This works by iterating over all rooms in alphebetical order.
|
|
"""
|
|
|
|
def _background_current_state_membership_txn(txn, last_processed_room):
|
|
processed = 0
|
|
while processed < batch_size:
|
|
txn.execute(
|
|
"""
|
|
SELECT MIN(room_id) FROM current_state_events WHERE room_id > ?
|
|
""",
|
|
(last_processed_room,),
|
|
)
|
|
row = txn.fetchone()
|
|
if not row or not row[0]:
|
|
return processed, True
|
|
|
|
(next_room,) = row
|
|
|
|
sql = """
|
|
UPDATE current_state_events
|
|
SET membership = (
|
|
SELECT membership FROM room_memberships
|
|
WHERE event_id = current_state_events.event_id
|
|
)
|
|
WHERE room_id = ?
|
|
"""
|
|
txn.execute(sql, (next_room,))
|
|
processed += txn.rowcount
|
|
|
|
last_processed_room = next_room
|
|
|
|
self.db_pool.updates._background_update_progress_txn(
|
|
txn,
|
|
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME,
|
|
{"last_processed_room": last_processed_room},
|
|
)
|
|
|
|
return processed, False
|
|
|
|
# If we haven't got a last processed room then just use the empty
|
|
# string, which will compare before all room IDs correctly.
|
|
last_processed_room = progress.get("last_processed_room", "")
|
|
|
|
row_count, finished = await self.db_pool.runInteraction(
|
|
"_background_current_state_membership_update",
|
|
_background_current_state_membership_txn,
|
|
last_processed_room,
|
|
)
|
|
|
|
if finished:
|
|
await self.db_pool.updates._end_background_update(
|
|
_CURRENT_STATE_MEMBERSHIP_UPDATE_NAME
|
|
)
|
|
|
|
return row_count
|
|
|
|
|
|
class RoomMemberStore(RoomMemberWorkerStore, RoomMemberBackgroundUpdateStore):
|
|
def __init__(self, database: DatabasePool, db_conn, hs):
|
|
super().__init__(database, db_conn, hs)
|
|
|
|
async def forget(self, user_id: str, room_id: str) -> None:
|
|
"""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))
|
|
|
|
self._invalidate_cache_and_stream(txn, self.did_forget, (user_id, room_id))
|
|
self._invalidate_cache_and_stream(
|
|
txn, self.get_forgotten_rooms_for_user, (user_id,)
|
|
)
|
|
|
|
await self.db_pool.runInteraction("forget_membership", f)
|
|
|
|
|
|
class _JoinedHostsCache:
|
|
"""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
|
|
|
|
async def get_destinations(self, state_entry: "_StateCacheEntry") -> Set[str]:
|
|
"""Get set of destinations for a state entry
|
|
|
|
Args:
|
|
state_entry
|
|
|
|
Returns:
|
|
The destinations as a set.
|
|
"""
|
|
if state_entry.state_group == self.state_group:
|
|
return frozenset(self.hosts_to_joined_users)
|
|
|
|
with (await 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.items():
|
|
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 = await 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 = await 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.values())
|
|
return frozenset(self.hosts_to_joined_users)
|
|
|
|
def __len__(self):
|
|
return self._len
|