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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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21
synapse/storage/databases/main/events.py
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@ -16,7 +16,6 @@
import itertools
import logging
from collections import OrderedDict
from http import HTTPStatus
from typing import (
TYPE_CHECKING,
Any,
@ -36,7 +35,7 @@ from prometheus_client import Counter
import synapse.metrics
from synapse.api.constants import EventContentFields, EventTypes, RelationTypes
from synapse.api.errors import Codes, SynapseError
from synapse.api.errors import PartialStateConflictError
from synapse.api.room_versions import RoomVersions
from synapse.events import EventBase, relation_from_event
from synapse.events.snapshot import EventContext
@ -72,24 +71,6 @@ event_counter = Counter(
)
class PartialStateConflictError(SynapseError):
"""An internal error raised when attempting to persist an event with partial state
after the room containing the event has been un-partial stated.
This error should be handled by recomputing the event context and trying again.
This error has an HTTP status code so that it can be transported over replication.
It should not be exposed to clients.
"""
def __init__(self) -> None:
super().__init__(
HTTPStatus.CONFLICT,
msg="Cannot persist partial state event in un-partial stated room",
errcode=Codes.UNKNOWN,
)
@attr.s(slots=True, auto_attribs=True)
class DeltaState:
"""Deltas to use to update the `current_state_events` table.