diff options
| -rw-r--r-- | changelog.d/13745.misc | 1 | ||||
| -rw-r--r-- | synapse/storage/databases/main/roommember.py | 202 | ||||
| -rw-r--r-- | synapse/storage/schema/main/delta/72/07force_update_current_state_events_membership.py | 52 |
3 files changed, 100 insertions, 155 deletions
diff --git a/changelog.d/13745.misc b/changelog.d/13745.misc new file mode 100644 index 0000000000..e97a789c0e --- /dev/null +++ b/changelog.d/13745.misc @@ -0,0 +1 @@ +Remove old queries to join room memberships to current state events. Contributed by Nick @ Beeper (@fizzadar). diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py index 6e1ff5626b..fdb4684e12 100644 --- a/synapse/storage/databases/main/roommember.py +++ b/synapse/storage/databases/main/roommember.py @@ -32,10 +32,7 @@ import attr from synapse.api.constants import EventTypes, Membership from synapse.metrics import LaterGauge -from synapse.metrics.background_process_metrics import ( - run_as_background_process, - wrap_as_background_process, -) +from synapse.metrics.background_process_metrics import wrap_as_background_process from synapse.storage._base import SQLBaseStore, db_to_json, make_in_list_sql_clause from synapse.storage.database import ( DatabasePool, @@ -91,16 +88,6 @@ class RoomMemberWorkerStore(EventsWorkerStore): # at a time. Keyed by room_id. self._joined_host_linearizer = Linearizer("_JoinedHostsCache") - # Is the current_state_events.membership up to date? Or is the - # background update still running? - self._current_state_events_membership_up_to_date = False - - txn = db_conn.cursor( - txn_name="_check_safe_current_state_events_membership_updated" - ) - self._check_safe_current_state_events_membership_updated_txn(txn) - txn.close() - if ( self.hs.config.worker.run_background_tasks and self.hs.config.metrics.metrics_flags.known_servers @@ -157,34 +144,6 @@ class RoomMemberWorkerStore(EventsWorkerStore): self._known_servers_count = max([count, 1]) return self._known_servers_count - def _check_safe_current_state_events_membership_updated_txn( - self, txn: LoggingTransaction - ) -> None: - """Checks if it is safe to assume the new current_state_events - membership column is up to date - """ - - pending_update = self.db_pool.simple_select_one_txn( - txn, - table="background_updates", - keyvalues={"update_name": _CURRENT_STATE_MEMBERSHIP_UPDATE_NAME}, - retcols=["update_name"], - allow_none=True, - ) - - self._current_state_events_membership_up_to_date = not pending_update - - # If the update is still running, reschedule to run. - if pending_update: - self._clock.call_later( - 15.0, - run_as_background_process, - "_check_safe_current_state_events_membership_updated", - self.db_pool.runInteraction, - "_check_safe_current_state_events_membership_updated", - self._check_safe_current_state_events_membership_updated_txn, - ) - @cached(max_entries=100000, iterable=True) async def get_users_in_room(self, room_id: str) -> List[str]: """ @@ -212,31 +171,14 @@ class RoomMemberWorkerStore(EventsWorkerStore): `get_current_hosts_in_room()` and so we can re-use the cache but it's not horrible to have here either. """ - # If we can assume current_state_events.membership is up to date - # then we can avoid a join, which is a Very Good Thing given how - # frequently this function gets called. - if self._current_state_events_membership_up_to_date: - sql = """ - SELECT c.state_key FROM current_state_events as c - /* Get the depth of the event from the events table */ - INNER JOIN events AS e USING (event_id) - WHERE c.type = 'm.room.member' AND c.room_id = ? AND membership = ? - /* Sorted by lowest depth first */ - ORDER BY e.depth ASC; - """ - else: - sql = """ - SELECT c.state_key FROM room_memberships as m - /* Get the depth of the event from the events table */ - INNER JOIN events AS e USING (event_id) - INNER JOIN current_state_events as c - ON m.event_id = c.event_id - AND m.room_id = c.room_id - AND m.user_id = c.state_key - WHERE c.type = 'm.room.member' AND c.room_id = ? AND m.membership = ? - /* Sorted by lowest depth first */ - ORDER BY e.depth ASC; - """ + sql = """ + SELECT c.state_key FROM current_state_events as c + /* Get the depth of the event from the events table */ + INNER JOIN events AS e USING (event_id) + WHERE c.type = 'm.room.member' AND c.room_id = ? AND membership = ? + /* Sorted by lowest depth first */ + ORDER BY e.depth ASC; + """ txn.execute(sql, (room_id, Membership.JOIN)) return [r[0] for r in txn] @@ -353,28 +295,14 @@ class RoomMemberWorkerStore(EventsWorkerStore): # We do this all in one transaction to keep the cache small. # FIXME: get rid of this when we have room_stats - # If we can assume current_state_events.membership is up to date - # then we can avoid a join, which is a Very Good Thing given how - # frequently this function gets called. - if self._current_state_events_membership_up_to_date: - # Note, rejected events will have a null membership field, so - # we we manually filter them out. - sql = """ - SELECT count(*), membership FROM current_state_events - WHERE type = 'm.room.member' AND room_id = ? - AND membership IS NOT NULL - GROUP BY membership - """ - else: - sql = """ - SELECT count(*), m.membership FROM room_memberships as m - INNER JOIN current_state_events as c - ON m.event_id = c.event_id - AND m.room_id = c.room_id - AND m.user_id = c.state_key - WHERE c.type = 'm.room.member' AND c.room_id = ? - GROUP BY m.membership - """ + # Note, rejected events will have a null membership field, so + # we we manually filter them out. + sql = """ + SELECT count(*), membership FROM current_state_events + WHERE type = 'm.room.member' AND room_id = ? + AND membership IS NOT NULL + GROUP BY membership + """ txn.execute(sql, (room_id,)) res: Dict[str, MemberSummary] = {} @@ -383,30 +311,18 @@ class RoomMemberWorkerStore(EventsWorkerStore): # we order by membership and then fairly arbitrarily by event_id so # heroes are consistent - if self._current_state_events_membership_up_to_date: - # Note, rejected events will have a null membership field, so - # we we manually filter them out. - sql = """ - SELECT state_key, membership, event_id - FROM current_state_events - WHERE type = 'm.room.member' AND room_id = ? - AND membership IS NOT NULL - ORDER BY - CASE membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC, - event_id ASC - LIMIT ? - """ - else: - sql = """ - SELECT c.state_key, m.membership, c.event_id - FROM room_memberships as m - INNER JOIN current_state_events as c USING (room_id, event_id) - WHERE c.type = 'm.room.member' AND c.room_id = ? - ORDER BY - CASE m.membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC, - c.event_id ASC - LIMIT ? - """ + # Note, rejected events will have a null membership field, so + # we we manually filter them out. + sql = """ + SELECT state_key, membership, event_id + FROM current_state_events + WHERE type = 'm.room.member' AND room_id = ? + AND membership IS NOT NULL + ORDER BY + CASE membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC, + event_id ASC + LIMIT ? + """ # 6 is 5 (number of heroes) plus 1, in case one of them is the calling user. txn.execute(sql, (room_id, Membership.JOIN, Membership.INVITE, 6)) @@ -649,27 +565,15 @@ class RoomMemberWorkerStore(EventsWorkerStore): # We use `current_state_events` here and not `local_current_membership` # as a) this gets called with remote users and b) this only gets called # for rooms the server is participating in. - if self._current_state_events_membership_up_to_date: - sql = """ - SELECT room_id, e.instance_name, e.stream_ordering - FROM current_state_events AS c - INNER JOIN events AS e USING (room_id, event_id) - WHERE - c.type = 'm.room.member' - AND c.state_key = ? - AND c.membership = ? - """ - else: - sql = """ - SELECT room_id, e.instance_name, e.stream_ordering - FROM current_state_events AS c - INNER JOIN room_memberships AS m USING (room_id, event_id) - INNER JOIN events AS e USING (room_id, event_id) - WHERE - c.type = 'm.room.member' - AND c.state_key = ? - AND m.membership = ? - """ + sql = """ + SELECT room_id, e.instance_name, e.stream_ordering + FROM current_state_events AS c + INNER JOIN events AS e USING (room_id, event_id) + WHERE + c.type = 'm.room.member' + AND c.state_key = ? + AND c.membership = ? + """ txn.execute(sql, (user_id, Membership.JOIN)) return frozenset( @@ -707,27 +611,15 @@ class RoomMemberWorkerStore(EventsWorkerStore): user_ids, ) - if self._current_state_events_membership_up_to_date: - sql = f""" - SELECT c.state_key, room_id, e.instance_name, e.stream_ordering - FROM current_state_events AS c - INNER JOIN events AS e USING (room_id, event_id) - WHERE - c.type = 'm.room.member' - AND c.membership = ? - AND {clause} - """ - else: - sql = f""" - SELECT c.state_key, room_id, e.instance_name, e.stream_ordering - FROM current_state_events AS c - INNER JOIN room_memberships AS m USING (room_id, event_id) - INNER JOIN events AS e USING (room_id, event_id) - WHERE - c.type = 'm.room.member' - AND m.membership = ? - AND {clause} - """ + sql = f""" + SELECT c.state_key, room_id, e.instance_name, e.stream_ordering + FROM current_state_events AS c + INNER JOIN events AS e USING (room_id, event_id) + WHERE + c.type = 'm.room.member' + AND c.membership = ? + AND {clause} + """ txn.execute(sql, [Membership.JOIN] + args) diff --git a/synapse/storage/schema/main/delta/72/07force_update_current_state_events_membership.py b/synapse/storage/schema/main/delta/72/07force_update_current_state_events_membership.py new file mode 100644 index 0000000000..b5853d125c --- /dev/null +++ b/synapse/storage/schema/main/delta/72/07force_update_current_state_events_membership.py @@ -0,0 +1,52 @@ +# Copyright 2022 Beeper +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +""" +Forces through the `current_state_events_membership` background job so checks +for its completion can be removed. + +Note the background job must still remain defined in the database class. +""" + + +def run_upgrade(cur, database_engine, *args, **kwargs): + cur.execute("SELECT update_name FROM background_updates") + rows = cur.fetchall() + for row in rows: + if row[0] == "current_state_events_membership": + break + # No pending background job so nothing to do here + else: + return + + # Populate membership field for all current_state_events, this may take + # a while but was originally handled via a background update in 2019. + cur.execute( + """ + UPDATE current_state_events + SET membership = ( + SELECT membership FROM room_memberships + WHERE event_id = current_state_events.event_id + ) + """ + ) + + # Finally, delete the background job because we've handled it above + cur.execute( + """ + DELETE FROM background_updates + WHERE update_name = 'current_state_events_membership' + """ + ) |