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Don't fetch current state in common case
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.
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@ -311,6 +311,23 @@ class EventsStore(SQLBaseStore):
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new_forward_extremeties[room_id] = new_latest_event_ids
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len_1 = (
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len(latest_event_ids) == 1
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and len(new_latest_event_ids) == 1
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)
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if len_1:
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all_single_prev_not_state = any(
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len(event.prev_events) == 1
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and not event.is_state()
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for event, ctx in ev_ctx_rm
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if not event.internal_metadata.is_outlier()
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and not ctx.rejected
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)
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# Don't bother calculating state if they're just
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# a long chain of single ancestor non-state events.
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if all_single_prev_not_state:
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continue
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state = yield self._calculate_state_delta(
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room_id, ev_ctx_rm, new_latest_event_ids
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)
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