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Use a more efficient way of calculating counters

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Brendan Abolivier 2020-06-10 17:54:33 +01:00
parent ef345c5a7b
commit c7b99a1180
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1 changed files with 20 additions and 23 deletions
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synapse/storage/data_stores/main/event_push_actions.py
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@ -123,22 +123,31 @@ class EventPushActionsWorkerStore(SQLBaseStore):
def _get_unread_counts_by_pos_txn(self, txn, room_id, user_id, stream_ordering):
# First get number of notifications.
# We ignore the notif column, given we want unread counts irrespective of
# whether the notification actually sent a push or not.
# First get number of actions, grouped on whether the action notifies.
sql = (
"SELECT count(*)"
"SELECT count(*), notif"
" FROM event_push_actions ea"
" WHERE"
" user_id = ?"
" AND room_id = ?"
" AND stream_ordering > ?"
" AND notif = 1"
" GROUP BY notif"
)
txn.execute(sql, (user_id, room_id, stream_ordering))
row = txn.fetchone()
notify_count = row[0] if row else 0
rows = txn.fetchall()
# We should get a maximum number of two rows: one for notif = 0, which is the
# number of actions that contribute to the unread_count but not to the
# notify_count, and one for notif = 1, which is the number of actions that
# contribute to both counters. If one or both rows don't appear, then the
# value for the matching counter should be 0.
unread_count = 0
notify_count = 0
for row in rows:
if row[1] == 0:
unread_count = row[0]
if row[1] == 1:
notify_count = row[0]
txn.execute(
"""
@ -151,20 +160,8 @@ class EventPushActionsWorkerStore(SQLBaseStore):
if rows:
notify_count += rows[0][0]
# Now get the number of unread messages in the room, i.e. messages that matched
# both a mark_unread rule and a notify one.
sql = (
"SELECT count(*)"
" FROM event_push_actions ea"
" WHERE"
" user_id = ?"
" AND room_id = ?"
" AND stream_ordering > ?"
" AND notif = 0"
)
txn.execute(sql, (user_id, room_id, stream_ordering))
row = txn.fetchone()
unread_count = row[0] if row else 0
# Now that we've got the final notify_count, add it to unread_count, as notify
# actions also contribute to the unread count.
unread_count += notify_count
# Now get the number of highlights
@ -183,9 +180,9 @@ class EventPushActionsWorkerStore(SQLBaseStore):
highlight_count = row[0] if row else 0
return {
"unread_count": unread_count,
"notify_count": notify_count,
"highlight_count": highlight_count,
"unread_count": unread_count,
}
@defer.inlineCallbacks