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Keep track when we try and fail to process a pulled event (#13589)

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We can follow-up this PR with:

 1. Only try to backfill from an event if we haven't tried recently -> https://github.com/matrix-org/synapse/issues/13622
 1. When we decide to backfill that event again, process it in the background so it doesn't block and make `/messages` slow when we know it will probably fail again -> https://github.com/matrix-org/synapse/issues/13623
 1. Generally track failures everywhere we try and fail to pull an event over federation -> https://github.com/matrix-org/synapse/issues/13700

Fix https://github.com/matrix-org/synapse/issues/13621

Part of https://github.com/matrix-org/synapse/issues/13356

Mentioned in [internal doc](https://docs.google.com/document/d/1lvUoVfYUiy6UaHB6Rb4HicjaJAU40-APue9Q4vzuW3c/edit#bookmark=id.qv7cj51sv9i5)
This commit is contained in:
Eric Eastwood 2022-09-14 13:57:50 -05:00 • committed by GitHub
parent 666ae87729
commit 957e3d74fc
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7 changed files with 329 additions and 9 deletions
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7
synapse/handlers/federation_event.py
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@ -862,6 +862,9 @@ class FederationEventHandler:
self._sanity_check_event(event)
except SynapseError as err:
logger.warning("Event %s failed sanity check: %s", event_id, err)
await self._store.record_event_failed_pull_attempt(
event.room_id, event_id, str(err)
)
return
try:
@ -897,6 +900,10 @@ class FederationEventHandler:
backfilled=backfilled,
)
except FederationError as e:
await self._store.record_event_failed_pull_attempt(
event.room_id, event_id, str(e)
)
if e.code == 403:
logger.warning("Pulled event %s failed history check.", event_id)
else: