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Room batch: fix up handling of unknown prev_event_ids (#12316)

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Richard van der Hoff 2022-03-29 14:56:25 +01:00 committed by GitHub
parent 8a519f8abc
commit 1f32b90b0f
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2 changed files with 14 additions and 8 deletions
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1
changelog.d/12316.misc Normal file
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@ -0,0 +1 @@
Avoid trying to calculate the state at outlier events.

21
synapse/rest/client/room_batch.py
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@ -123,6 +123,19 @@ class RoomBatchSendEventRestServlet(RestServlet):
errcode=Codes.INVALID_PARAM,
)
# Make sure that the prev_event_ids exist and aren't outliers - ie, they are
# regular parts of the room DAG where we know the state.
non_outlier_prev_events = await self.store.have_events_in_timeline(
prev_event_ids_from_query
)
for prev_event_id in prev_event_ids_from_query:
if prev_event_id not in non_outlier_prev_events:
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"prev_event %s does not exist, or is an outlier" % (prev_event_id,),
errcode=Codes.INVALID_PARAM,
)
# For the event we are inserting next to (`prev_event_ids_from_query`),
# find the most recent state events that allowed that message to be
# sent. We will use that as a base to auth our historical messages
@ -131,14 +144,6 @@ class RoomBatchSendEventRestServlet(RestServlet):
prev_event_ids_from_query
)
if not state_event_ids:
raise SynapseError(
HTTPStatus.BAD_REQUEST,
"No auth events found for given prev_event query parameter. The prev_event=%s probably does not exist."
% prev_event_ids_from_query,
errcode=Codes.INVALID_PARAM,
)
state_event_ids_at_start = []
# Create and persist all of the state events that float off on their own
# before the batch. These will most likely be all of the invite/member