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Handle the case of get_missing_events failing

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Currently if a call to `/get_missing_events` fails we log an exception
and stop processing the top level event we received over federation.
Instead let's try and handle it sensibly given it is a somewhat expected
failure mode.
This commit is contained in:
Erik Johnston 2019-04-10 10:39:54 +01:00
parent 329688c161
commit c132c8e505
1 changed files with 20 additions and 9 deletions
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29
synapse/handlers/federation.py
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@ -35,6 +35,7 @@ from synapse.api.errors import (
CodeMessageException, CodeMessageException,
FederationDeniedError, FederationDeniedError,
FederationError, FederationError,
RequestSendFailed,
StoreError, StoreError,
SynapseError, SynapseError,
) )
@ -493,15 +494,25 @@ class FederationHandler(BaseHandler):
# #
# All that said: Let's try increasing the timout to 60s and see what happens. # All that said: Let's try increasing the timout to 60s and see what happens.
missing_events = yield self.federation_client.get_missing_events( try:
origin, missing_events = yield self.federation_client.get_missing_events(
room_id, origin,
earliest_events_ids=list(latest), room_id,
latest_events=[pdu], earliest_events_ids=list(latest),
limit=10, latest_events=[pdu],
min_depth=min_depth, limit=10,
timeout=60000, min_depth=min_depth,
) timeout=60000,
)
except RequestSendFailed as e:
# We failed to get the missing events, but since we need to handle
# the case of `get_missing_events` not returning the necessary
# events anyway, it is safe to simply log the error and continue.
logger.warn(
"[%s %s]: Failed to get prev_events for %s: %s",
room_id, event_id, e,
)
return
logger.info( logger.info(
"[%s %s]: Got %d prev_events: %s", "[%s %s]: Got %d prev_events: %s",