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Merge pull request #6652 from matrix-org/babolivier/depth_missing_events

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Fix conditions failing if min_depth = 0
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Brendan Abolivier 2020-01-07 15:22:07 +01:00 committed by GitHub
commit 0ab5853ec9
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3 changed files with 4 additions and 3 deletions
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1
changelog.d/6652.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug causing Synapse not to fetch missing events when it believes it has every event in the room.

4
synapse/handlers/federation.py
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@ -248,13 +248,13 @@ class FederationHandler(BaseHandler):
prevs = set(pdu.prev_event_ids()) prevs = set(pdu.prev_event_ids())
seen = await self.store.have_seen_events(prevs) seen = await self.store.have_seen_events(prevs)
if min_depth and pdu.depth < min_depth: if min_depth is not None and pdu.depth < min_depth:
# This is so that we don't notify the user about this # This is so that we don't notify the user about this
# message, to work around the fact that some events will # message, to work around the fact that some events will
# reference really really old events we really don't want to # reference really really old events we really don't want to
# send to the clients. # send to the clients.
pdu.internal_metadata.outlier = True pdu.internal_metadata.outlier = True
elif min_depth and pdu.depth > min_depth: elif min_depth is not None and pdu.depth > min_depth:
missing_prevs = prevs - seen missing_prevs = prevs - seen
if sent_to_us_directly and missing_prevs: if sent_to_us_directly and missing_prevs:
# If we're missing stuff, ensure we only fetch stuff one # If we're missing stuff, ensure we only fetch stuff one

2
synapse/storage/data_stores/main/event_federation.py
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@ -470,7 +470,7 @@ class EventFederationStore(EventFederationWorkerStore):
def _update_min_depth_for_room_txn(self, txn, room_id, depth): def _update_min_depth_for_room_txn(self, txn, room_id, depth):
min_depth = self._get_min_depth_interaction(txn, room_id) min_depth = self._get_min_depth_interaction(txn, room_id)
if min_depth and depth >= min_depth: if min_depth is not None and depth >= min_depth:
return return
self.db.simple_upsert_txn( self.db.simple_upsert_txn(