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https://github.com/element-hq/synapse
synced 2024-08-19 23:10:20 +00:00
Do the update as a background index
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parent
1d3858371e
commit
7f18b3d526
2 changed files with 51 additions and 9 deletions
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@ -71,6 +71,19 @@ class EventsBackgroundUpdatesStore(BackgroundUpdateStore):
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"redactions_received_ts", self._redactions_received_ts
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"redactions_received_ts", self._redactions_received_ts
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)
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)
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# This index gets deleted in `event_fix_redactions_bytes` update
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self.register_background_index_update(
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"event_fix_redactions_bytes_create_index",
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index_name="redactions_censored_redacts",
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table="redactions",
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columns=["redacts"],
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where_clause="have_censored",
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)
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self.register_background_update_handler(
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"event_fix_redactions_bytes", self._event_fix_redactions_bytes
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)
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@defer.inlineCallbacks
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@defer.inlineCallbacks
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def _background_reindex_fields_sender(self, progress, batch_size):
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def _background_reindex_fields_sender(self, progress, batch_size):
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target_min_stream_id = progress["target_min_stream_id_inclusive"]
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target_min_stream_id = progress["target_min_stream_id_inclusive"]
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@ -458,3 +471,33 @@ class EventsBackgroundUpdatesStore(BackgroundUpdateStore):
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yield self._end_background_update("redactions_received_ts")
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yield self._end_background_update("redactions_received_ts")
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return count
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return count
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@defer.inlineCallbacks
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def _event_fix_redactions_bytes(self, progress, batch_size):
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"""Undoes hex encoded censored redacted event JSON.
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"""
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def _event_fix_redactions_bytes_txn(txn):
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# This update is quite fast due to new index.
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txn.execute(
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"""
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UPDATE event_json
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SET
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json = convert_from(json::bytea, 'utf8')
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FROM redactions
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WHERE
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redactions.have_censored
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AND event_json.event_id = redactions.redacts
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AND json NOT LIKE '{%';
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"""
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)
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txn.execute("DROP INDEX redactions_censored_redacts")
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yield self.runInteraction(
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"_event_fix_redactions_bytes", _event_fix_redactions_bytes_txn
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)
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yield self._end_background_update("event_fix_redactions_bytes")
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return 1
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@ -15,12 +15,11 @@
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-- There was a bug where we may have updated censored redactions as bytes,
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-- There was a bug where we may have updated censored redactions as bytes,
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-- which can (somehow) cause json to be inserted hex encoded. This goes and
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-- which can (somehow) cause json to be inserted hex encoded. These updates go
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-- undoes any such hex encoded JSON.
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-- and undoes any such hex encoded JSON.
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UPDATE event_json SET json = convert_from(json::bytea, 'utf8')
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WHERE event_id IN (
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INSERT into background_updates (update_name, progress_json)
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SELECT event_json.event_id
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VALUES ('event_fix_redactions_bytes_create_index', '{}');
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FROM event_json
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INNER JOIN redactions ON (event_json.event_id = redacts)
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INSERT into background_updates (update_name, progress_json, depends_on)
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WHERE have_censored AND json NOT LIKE '{%'
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VALUES ('event_fix_redactions_bytes', '{}', 'event_fix_redactions_bytes_create_index');
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);
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