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Avoid extra db lookups

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Since we're about to look up the events themselves anyway, we can skip the
extra db queries here.
This commit is contained in:
Richard van der Hoff 2018-08-02 13:23:48 +01:00
parent 0a65450d04
commit 14fa9d4d92
3 changed files with 26 additions and 62 deletions
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30
synapse/storage/event_federation.py
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@ -295,35 +295,6 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore,
get_forward_extremeties_for_room_txn
)
def get_room_ids_for_events(self, event_ids):
"""Get a list of room IDs for which the given events belong.
Args:
event_ids (list): the events to look up the room of
Returns:
list, the room IDs for the events
"""
return self.runInteraction(
"get_room_ids_for_events",
self._get_room_ids_for_events, event_ids
)
def _get_room_ids_for_events(self, txn, event_ids):
logger.debug("_get_room_ids_for_events: %s", repr(event_ids))
base_sql = (
"SELECT DISTINCT room_id FROM events"
" WHERE event_id IN (%s)"
)
txn.execute(
base_sql % (",".join(["?"] * len(event_ids)),),
event_ids
)
return [r[0] for r in txn]
def get_backfill_events(self, room_id, event_list, limit):
"""Get a list of Events for a given topic that occurred before (and
including) the events in event_list. Return a list of max size `limit`
@ -372,6 +343,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore,
table="events",
keyvalues={
"event_id": event_id,
"room_id": room_id,
},
retcol="depth",
allow_none=True,