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| author | Eric Eastwood <erice@element.io> | 2022-07-20 15:58:51 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-07-20 15:58:51 -0500 |
| commit | 0f971ca68e808dd16f53f5594a6b33b7bddcc9a9 (patch) | |
| tree | 07e68c0a7bc2d05cc6f6ac2e8905d069bff40872 /synapse/storage | |
| parent | Validate federation destinations and log an error if server name is invalid. ... (diff) | |
| download | synapse-0f971ca68e808dd16f53f5594a6b33b7bddcc9a9.tar.xz | |
Update `get_pdu` to return the original, pristine `EventBase` (#13320)
Update `get_pdu` to return the untouched, pristine `EventBase` as it was originally seen over federation (no metadata added). Previously, we returned the same `event` reference that we stored in the cache which downstream code modified in place and added metadata like setting it as an `outlier` and essentially poisoned our cache. Now we always return a copy of the `event` so the original can stay pristine in our cache and re-used for the next cache call. Split out from https://github.com/matrix-org/synapse/pull/13205 As discussed at: - https://github.com/matrix-org/synapse/pull/13205#discussion_r918365746 - https://github.com/matrix-org/synapse/pull/13205#discussion_r918366125 Related to https://github.com/matrix-org/synapse/issues/12584. This PR doesn't fix that issue because it hits [`get_event` which exists from the local database before it tries to `get_pdu`](https://github.com/matrix-org/synapse/blob/7864f33e286dec22368dc0b11c06eebb1462a51e/synapse/federation/federation_client.py#L581-L594).
Diffstat (limited to 'synapse/storage')
| -rw-r--r-- | synapse/storage/databases/main/events.py | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py index 156e1bd5ab..1f600f1190 100644 --- a/synapse/storage/databases/main/events.py +++ b/synapse/storage/databases/main/events.py @@ -1346,9 +1346,24 @@ class PersistEventsStore: event_id: outlier for event_id, outlier in txn } + logger.debug( + "_update_outliers_txn: events=%s have_persisted=%s", + [ev.event_id for ev, _ in events_and_contexts], + have_persisted, + ) + to_remove = set() for event, context in events_and_contexts: - if event.event_id not in have_persisted: + outlier_persisted = have_persisted.get(event.event_id) + logger.debug( + "_update_outliers_txn: event=%s outlier=%s outlier_persisted=%s", + event.event_id, + event.internal_metadata.is_outlier(), + outlier_persisted, + ) + + # Ignore events which we haven't persisted at all + if outlier_persisted is None: continue to_remove.add(event) @@ -1358,7 +1373,6 @@ class PersistEventsStore: # was an outlier or not - what we have is at least as good. continue - outlier_persisted = have_persisted[event.event_id] if not event.internal_metadata.is_outlier() and outlier_persisted: # We received a copy of an event that we had already stored as # an outlier in the database. We now have some state at that event @@ -1369,7 +1383,10 @@ class PersistEventsStore: # events down /sync. In general they will be historical events, so that # doesn't matter too much, but that is not always the case. - logger.info("Updating state for ex-outlier event %s", event.event_id) + logger.info( + "_update_outliers_txn: Updating state for ex-outlier event %s", + event.event_id, + ) # insert into event_to_state_groups. try: |