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Merge pull request #5774 from matrix-org/erikj/fix_rejected_membership

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Fix room summary when rejected events are in state
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Erik Johnston 2019-07-29 17:15:15 +01:00 committed by GitHub
parent 3e013b7c8e 2e9cf7dda5
commit 7c8c3b8437
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2 changed files with 7 additions and 0 deletions
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1
changelog.d/5774.misc Normal file
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@ -0,0 +1 @@
Reduce database IO usage by optimising queries for current membership.

6
synapse/storage/roommember.py
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@ -156,9 +156,12 @@ class RoomMemberWorkerStore(EventsWorkerStore):
# 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:
@ -180,10 +183,13 @@ 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