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Add fast path for sliding sync streams that only ask for extensions (#17768)

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Principally useful for EX e2ee sliding sync connections.
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Erik Johnston 2024-09-30 12:59:50 +01:00 committed by GitHub
parent 93889eb2e7
commit de955293cf
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2 changed files with 22 additions and 0 deletions
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1
changelog.d/17768.misc Normal file
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@ -0,0 +1 @@
Improve performance of sliding sync connections that do not ask for any rooms.

21
synapse/handlers/sliding_sync/room_lists.py
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@ -123,6 +123,19 @@ class SlidingSyncInterestedRooms:
newly_left_rooms: AbstractSet[str]
dm_room_ids: AbstractSet[str]
@staticmethod
def empty() -> "SlidingSyncInterestedRooms":
return SlidingSyncInterestedRooms(
lists={},
relevant_room_map={},
relevant_rooms_to_send_map={},
all_rooms=set(),
room_membership_for_user_map={},
newly_joined_rooms=set(),
newly_left_rooms=set(),
dm_room_ids=set(),
)
def filter_membership_for_sync(
*,
@ -181,6 +194,14 @@ class SlidingSyncRoomLists:
from_token: Optional[StreamToken],
) -> SlidingSyncInterestedRooms:
"""Fetch the set of rooms that match the request"""
has_lists = sync_config.lists is not None and len(sync_config.lists) > 0
has_room_subscriptions = (
sync_config.room_subscriptions is not None
and len(sync_config.room_subscriptions) > 0
)
if not has_lists and not has_room_subscriptions:
return SlidingSyncInterestedRooms.empty()
if await self.store.have_finished_sliding_sync_background_jobs():
return await self._compute_interested_rooms_new_tables(