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Remove join when calculating room summaries.

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This commit is contained in:
Erik Johnston 2019-07-24 11:49:15 +01:00
parent 62921fb53e
commit 0c4a99607e
1 changed files with 21 additions and 13 deletions
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34
synapse/storage/roommember.py
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@ -179,19 +179,27 @@ class RoomMemberWorkerStore(EventsWorkerStore):
# we order by membership and then fairly arbitrarily by event_id so
# heroes are consistent
sql = """
SELECT m.user_id, m.membership, m.event_id
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 = ?
ORDER BY
CASE m.membership WHEN ? THEN 1 WHEN ? THEN 2 ELSE 3 END ASC,
m.event_id ASC
LIMIT ?
"""
if self._current_state_events_membership_up_to_date:
sql = """
SELECT state_key, membership, event_id
FROM current_state_events
WHERE type = 'm.room.member' AND room_id = ?
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 ?
"""
# 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))