diff options
| -rw-r--r-- | changelog.d/14248.bugfix | 1 | ||||
| -rw-r--r-- | synapse/storage/databases/main/events.py | 61 | ||||
| -rw-r--r-- | tests/rest/client/test_relations.py | 110 |
3 files changed, 129 insertions, 43 deletions
diff --git a/changelog.d/14248.bugfix b/changelog.d/14248.bugfix new file mode 100644 index 0000000000..203c52c16b --- /dev/null +++ b/changelog.d/14248.bugfix @@ -0,0 +1 @@ +Fix a bug introduced in Synapse 1.70.0rc1 where the information returned from the `/threads` API could be stale when threaded events are redacted. diff --git a/synapse/storage/databases/main/events.py b/synapse/storage/databases/main/events.py index 6698cbf664..00880bb37d 100644 --- a/synapse/storage/databases/main/events.py +++ b/synapse/storage/databases/main/events.py @@ -2028,25 +2028,37 @@ class PersistEventsStore: redacted_event_id: The event that was redacted. """ - # Fetch the current relation of the event being redacted. - redacted_relates_to = self.db_pool.simple_select_one_onecol_txn( + # Fetch the relation of the event being redacted. + row = self.db_pool.simple_select_one_txn( txn, table="event_relations", keyvalues={"event_id": redacted_event_id}, - retcol="relates_to_id", + retcols=("relates_to_id", "relation_type"), allow_none=True, ) + # Nothing to do if no relation is found. + if row is None: + return + + redacted_relates_to = row["relates_to_id"] + rel_type = row["relation_type"] + self.db_pool.simple_delete_txn( + txn, table="event_relations", keyvalues={"event_id": redacted_event_id} + ) + # Any relation information for the related event must be cleared. - if redacted_relates_to is not None: - self.store._invalidate_cache_and_stream( - txn, self.store.get_relations_for_event, (redacted_relates_to,) - ) + self.store._invalidate_cache_and_stream( + txn, self.store.get_relations_for_event, (redacted_relates_to,) + ) + if rel_type == RelationTypes.ANNOTATION: self.store._invalidate_cache_and_stream( txn, self.store.get_aggregation_groups_for_event, (redacted_relates_to,) ) + if rel_type == RelationTypes.REPLACE: self.store._invalidate_cache_and_stream( txn, self.store.get_applicable_edit, (redacted_relates_to,) ) + if rel_type == RelationTypes.THREAD: self.store._invalidate_cache_and_stream( txn, self.store.get_thread_summary, (redacted_relates_to,) ) @@ -2057,9 +2069,38 @@ class PersistEventsStore: txn, self.store.get_threads, (room_id,) ) - self.db_pool.simple_delete_txn( - txn, table="event_relations", keyvalues={"event_id": redacted_event_id} - ) + # Find the new latest event in the thread. + sql = """ + SELECT event_id, topological_ordering, stream_ordering + FROM event_relations + INNER JOIN events USING (event_id) + WHERE relates_to_id = ? AND relation_type = ? + ORDER BY topological_ordering DESC, stream_ordering DESC + LIMIT 1 + """ + txn.execute(sql, (redacted_relates_to, RelationTypes.THREAD)) + + # If a latest event is found, update the threads table, this might + # be the same current latest event (if an earlier event in the thread + # was redacted). + latest_event_row = txn.fetchone() + if latest_event_row: + self.db_pool.simple_upsert_txn( + txn, + table="threads", + keyvalues={"room_id": room_id, "thread_id": redacted_relates_to}, + values={ + "latest_event_id": latest_event_row[0], + "topological_ordering": latest_event_row[1], + "stream_ordering": latest_event_row[2], + }, + ) + + # Otherwise, delete the thread: it no longer exists. + else: + self.db_pool.simple_delete_one_txn( + txn, table="threads", keyvalues={"thread_id": redacted_relates_to} + ) def _store_room_topic_txn(self, txn: LoggingTransaction, event: EventBase) -> None: if isinstance(event.content.get("topic"), str): diff --git a/tests/rest/client/test_relations.py b/tests/rest/client/test_relations.py index ddf315b894..e3d801f7a8 100644 --- a/tests/rest/client/test_relations.py +++ b/tests/rest/client/test_relations.py @@ -1523,6 +1523,26 @@ class RelationRedactionTestCase(BaseRelationsTestCase): ) self.assertEqual(200, channel.code, channel.json_body) + def _get_threads(self) -> List[Tuple[str, str]]: + """Request the threads in the room and returns a list of thread ID and latest event ID.""" + # Request the threads in the room. + channel = self.make_request( + "GET", + f"/_matrix/client/v1/rooms/{self.room}/threads", + access_token=self.user_token, + ) + self.assertEquals(200, channel.code, channel.json_body) + threads = channel.json_body["chunk"] + return [ + ( + t["event_id"], + t["unsigned"]["m.relations"][RelationTypes.THREAD]["latest_event"][ + "event_id" + ], + ) + for t in threads + ] + def test_redact_relation_annotation(self) -> None: """ Test that annotations of an event are properly handled after the @@ -1567,58 +1587,82 @@ class RelationRedactionTestCase(BaseRelationsTestCase): The redacted event should not be included in bundled aggregations or the response to relations. """ - channel = self._send_relation( - RelationTypes.THREAD, - EventTypes.Message, - content={"body": "reply 1", "msgtype": "m.text"}, - ) - unredacted_event_id = channel.json_body["event_id"] + # Create a thread with a few events in it. + thread_replies = [] + for i in range(3): + channel = self._send_relation( + RelationTypes.THREAD, + EventTypes.Message, + content={"body": f"reply {i}", "msgtype": "m.text"}, + ) + thread_replies.append(channel.json_body["event_id"]) - # Note that the *last* event in the thread is redacted, as that gets - # included in the bundled aggregation. - channel = self._send_relation( - RelationTypes.THREAD, - EventTypes.Message, - content={"body": "reply 2", "msgtype": "m.text"}, + ################################################## + # Check the test data is configured as expected. # + ################################################## + self.assertEquals(self._get_related_events(), list(reversed(thread_replies))) + relations = self._get_bundled_aggregations() + self.assertDictContainsSubset( + {"count": 3, "current_user_participated": True}, + relations[RelationTypes.THREAD], + ) + # The latest event is the last sent event. + self.assertEqual( + relations[RelationTypes.THREAD]["latest_event"]["event_id"], + thread_replies[-1], ) - to_redact_event_id = channel.json_body["event_id"] - # Both relations exist. - event_ids = self._get_related_events() + # There should be one thread, the latest event is the event that will be redacted. + self.assertEqual(self._get_threads(), [(self.parent_id, thread_replies[-1])]) + + ########################## + # Redact the last event. # + ########################## + self._redact(thread_replies.pop()) + + # The thread should still exist, but the latest event should be updated. + self.assertEquals(self._get_related_events(), list(reversed(thread_replies))) relations = self._get_bundled_aggregations() - self.assertEquals(event_ids, [to_redact_event_id, unredacted_event_id]) self.assertDictContainsSubset( - { - "count": 2, - "current_user_participated": True, - }, + {"count": 2, "current_user_participated": True}, relations[RelationTypes.THREAD], ) - # And the latest event returned is the event that will be redacted. + # And the latest event is the last unredacted event. self.assertEqual( relations[RelationTypes.THREAD]["latest_event"]["event_id"], - to_redact_event_id, + thread_replies[-1], ) + self.assertEqual(self._get_threads(), [(self.parent_id, thread_replies[-1])]) - # Redact one of the reactions. - self._redact(to_redact_event_id) + ########################################### + # Redact the *first* event in the thread. # + ########################################### + self._redact(thread_replies.pop(0)) - # The unredacted relation should still exist. - event_ids = self._get_related_events() + # Nothing should have changed (except the thread count). + self.assertEquals(self._get_related_events(), thread_replies) relations = self._get_bundled_aggregations() - self.assertEquals(event_ids, [unredacted_event_id]) self.assertDictContainsSubset( - { - "count": 1, - "current_user_participated": True, - }, + {"count": 1, "current_user_participated": True}, relations[RelationTypes.THREAD], ) - # And the latest event is now the unredacted event. + # And the latest event is the last unredacted event. self.assertEqual( relations[RelationTypes.THREAD]["latest_event"]["event_id"], - unredacted_event_id, + thread_replies[-1], ) + self.assertEqual(self._get_threads(), [(self.parent_id, thread_replies[-1])]) + + #################################### + # Redact the last remaining event. # + #################################### + self._redact(thread_replies.pop(0)) + self.assertEquals(thread_replies, []) + + # The event should no longer be considered a thread. + self.assertEquals(self._get_related_events(), []) + self.assertEquals(self._get_bundled_aggregations(), {}) + self.assertEqual(self._get_threads(), []) def test_redact_parent_edit(self) -> None: """Test that edits of an event are redacted when the original event |