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Send device list updates out to servers in partially joined rooms (#13874)

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Use the provided list of servers in the room from the `/send_join`
response, since we will not know which users are in the room.  This
isn't sufficient to ensure that all remote servers receive the right
device list updates, since the `/send_join` response may be inaccurate
or we may calculate the membership state of new users in the room
incorrectly.

Signed-off-by: Sean Quah <seanq@matrix.org>
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Sean Quah 2022-09-23 13:44:03 +01:00 • committed by GitHub
parent c06b2b7142
commit 03c2bfb7f8
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4 changed files with 66 additions and 2 deletions
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17
synapse/storage/databases/main/room.py
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@ -25,6 +25,7 @@ from typing import (
List,
Mapping,
Optional,
Sequence,
Tuple,
Union,
cast,
@ -1133,6 +1134,22 @@ class RoomWorkerStore(CacheInvalidationWorkerStore):
get_rooms_for_retention_period_in_range_txn,
)
async def get_partial_state_servers_at_join(self, room_id: str) -> Sequence[str]:
"""Gets the list of servers in a partial state room at the time we joined it.
Returns:
The `servers_in_room` list from the `/send_join` response for partial state
rooms. May not be accurate or complete, as it comes from a remote
homeserver.
An empty list for full state rooms.
"""
return await self.db_pool.simple_select_onecol(
"partial_state_rooms_servers",
keyvalues={"room_id": room_id},
retcol="server_name",
desc="get_partial_state_servers_at_join",
)
async def get_partial_state_rooms_and_servers(
self,
) -> Mapping[str, Collection[str]]: