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Fix up _handle_prev_events to not try to insert duplicate rows

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This commit is contained in:
Erik Johnston 2015-05-12 14:41:50 +01:00
parent 74850d7f75
commit c1779a79bc
1 changed files with 13 additions and 23 deletions
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36
synapse/storage/event_federation.py
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@ -330,31 +330,21 @@ class EventFederationStore(SQLBaseStore):
txn.execute(query, (event_id, room_id))
# Insert all the prev_events as a backwards thing, they'll get
# deleted in a second if they're incorrect anyway.
self._simple_insert_many_txn(
txn,
table="event_backward_extremities",
values=[
{
"event_id": e_id,
"room_id": room_id,
}
for e_id, _ in prev_events
],
query = (
"INSERT INTO event_backward_extremities (event_id, room_id)"
" SELECT ?, ? WHERE NOT EXISTS ("
" SELECT 1 FROM event_backward_extremities"
" WHERE event_id = ? AND room_id = ?"
" )"
" AND NOT EXISTS ("
" SELECT 1 FROM events WHERE event_id = ? AND room_id = ?"
" )"
)
# Also delete from the backwards extremities table all ones that
# reference events that we have already seen
query = (
"DELETE FROM event_backward_extremities WHERE EXISTS ("
"SELECT 1 FROM events "
"WHERE "
"event_backward_extremities.event_id = events.event_id "
"AND not events.outlier "
")"
)
txn.execute(query)
txn.executemany(query, [
(e_id, room_id, e_id, room_id, e_id, room_id,)
for e_id, _ in prev_events
])
txn.call_after(
self.get_latest_event_ids_in_room.invalidate, room_id