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Faster joins: don't stall when a user joins during a fast join (#14606)

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Fixes #12801.
Complement tests are at
https://github.com/matrix-org/complement/pull/567.

Avoid blocking on full state when handling a subsequent join into a
partial state room.

Also always perform a remote join into partial state rooms, since we do
not know whether the joining user has been banned and want to avoid
leaking history to banned users.

Signed-off-by: Mathieu Velten <mathieuv@matrix.org>
Co-authored-by: Sean Quah <seanq@matrix.org>
Co-authored-by: David Robertson <davidr@element.io>
This commit is contained in:
Mathieu Velten 2023-02-11 00:31:05 +01:00 • committed by GitHub
parent d0c713cc85
commit 6cddf24e36
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12 changed files with 196 additions and 94 deletions
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5
synapse/handlers/room_member_worker.py
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@ -15,8 +15,7 @@
import logging
from typing import TYPE_CHECKING, List, Optional, Tuple
from synapse.api.errors import SynapseError
from synapse.handlers.room_member import RoomMemberHandler
from synapse.handlers.room_member import NoKnownServersError, RoomMemberHandler
from synapse.replication.http.membership import (
ReplicationRemoteJoinRestServlet as ReplRemoteJoin,
ReplicationRemoteKnockRestServlet as ReplRemoteKnock,
@ -52,7 +51,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
) -> Tuple[str, int]:
"""Implements RoomMemberHandler._remote_join"""
if len(remote_room_hosts) == 0:
raise SynapseError(404, "No known servers")
raise NoKnownServersError()
ret = await self._remote_join_client(
requester=requester,