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Don't fetch current state in common case

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Currently we fetch the list of current state events whenever we send
something in a room. This is overkill for the common case of persisting
a simple chain of non-state events, so lets handle that case specially.
This commit is contained in:
Erik Johnston 2017-02-27 18:33:41 +00:00
parent 8eec652de5
commit 49f4bc4709
1 changed files with 17 additions and 0 deletions
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17
synapse/storage/events.py
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@ -311,6 +311,23 @@ class EventsStore(SQLBaseStore):
new_forward_extremeties[room_id] = new_latest_event_ids
len_1 = (
len(latest_event_ids) == 1
and len(new_latest_event_ids) == 1
)
if len_1:
all_single_prev_not_state = any(
len(event.prev_events) == 1
and not event.is_state()
for event, ctx in ev_ctx_rm
if not event.internal_metadata.is_outlier()
and not ctx.rejected
)
# Don't bother calculating state if they're just
# a long chain of single ancestor non-state events.
if all_single_prev_not_state:
continue
state = yield self._calculate_state_delta(
room_id, ev_ctx_rm, new_latest_event_ids
)