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Wait for streams to catch up when processing HTTP replication. (#14820)

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This should hopefully mitigate a class of races where data gets out of
sync due a HTTP replication request racing with the replication streams.
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Erik Johnston 2023-01-18 19:35:29 +00:00 • committed by GitHub
parent e8f2bf5c40
commit 9187fd940e
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21 changed files with 225 additions and 144 deletions
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6
synapse/replication/http/streams.py
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@ -54,6 +54,10 @@ class ReplicationGetStreamUpdates(ReplicationEndpoint):
PATH_ARGS = ("stream_name",)
METHOD = "GET"
# We don't want to wait for replication streams to catch up, as this gets
# called in the process of catching replication streams up.
WAIT_FOR_STREAMS = False
def __init__(self, hs: "HomeServer"):
super().__init__(hs)
@ -67,7 +71,7 @@ class ReplicationGetStreamUpdates(ReplicationEndpoint):
return {"from_token": from_token, "upto_token": upto_token}
async def _handle_request( # type: ignore[override]
self, request: Request, stream_name: str
self, request: Request, content: JsonDict, stream_name: str
) -> Tuple[int, JsonDict]:
stream = self.streams.get(stream_name)
if stream is None: