diff options
Diffstat (limited to 'synapse/storage/__init__.py')
| -rw-r--r-- | synapse/storage/__init__.py | 211 |
1 files changed, 136 insertions, 75 deletions
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py index 7c54b1b9d3..a63c59a8a2 100644 --- a/synapse/storage/__init__.py +++ b/synapse/storage/__init__.py @@ -128,21 +128,144 @@ class DataStore(RoomMemberStore, RoomStore, pass @defer.inlineCallbacks - def get_event(self, event_id, allow_none=False): - events = yield self._get_events([event_id]) + def get_event(self, event_id, check_redacted=True, + get_prev_content=False, allow_rejected=False, + allow_none=False): + """Get an event from the database by event_id. + + Args: + event_id (str): The event_id of the event to fetch + check_redacted (bool): If True, check if event has been redacted + and redact it. + get_prev_content (bool): If True and event is a state event, + include the previous states content in the unsigned field. + allow_rejected (bool): If True return rejected events. + allow_none (bool): If True, return None if no event found, if + False throw an exception. - if not events: - if allow_none: - defer.returnValue(None) - else: - raise RuntimeError("Could not find event %s" % (event_id,)) + Returns: + Deferred : A FrozenEvent. + """ + event = yield self.runInteraction( + "get_event", self._get_event_txn, + event_id, + check_redacted=check_redacted, + get_prev_content=get_prev_content, + allow_rejected=allow_rejected, + ) - defer.returnValue(events[0]) + if not event and not allow_none: + raise RuntimeError("Could not find event %s" % (event_id,)) + + defer.returnValue(event) @log_function def _persist_event_txn(self, txn, event, context, backfilled, stream_ordering=None, is_new_state=True, current_state=None): + + # We purposefully do this first since if we include a `current_state` + # key, we *want* to update the `current_state_events` table + if current_state: + txn.execute( + "DELETE FROM current_state_events WHERE room_id = ?", + (event.room_id,) + ) + + for s in current_state: + self._simple_insert_txn( + txn, + "current_state_events", + { + "event_id": s.event_id, + "room_id": s.room_id, + "type": s.type, + "state_key": s.state_key, + }, + or_replace=True, + ) + + if event.is_state() and is_new_state: + if not backfilled and not context.rejected: + self._simple_insert_txn( + txn, + table="state_forward_extremities", + values={ + "event_id": event.event_id, + "room_id": event.room_id, + "type": event.type, + "state_key": event.state_key, + }, + or_replace=True, + ) + + for prev_state_id, _ in event.prev_state: + self._simple_delete_txn( + txn, + table="state_forward_extremities", + keyvalues={ + "event_id": prev_state_id, + } + ) + + outlier = event.internal_metadata.is_outlier() + + if not outlier: + self._store_state_groups_txn(txn, event, context) + + self._update_min_depth_for_room_txn( + txn, + event.room_id, + event.depth + ) + + self._handle_prev_events( + txn, + outlier=outlier, + event_id=event.event_id, + prev_events=event.prev_events, + room_id=event.room_id, + ) + + have_persisted = self._simple_select_one_onecol_txn( + txn, + table="event_json", + keyvalues={"event_id": event.event_id}, + retcol="event_id", + allow_none=True, + ) + + metadata_json = encode_canonical_json( + event.internal_metadata.get_dict() + ) + + # If we have already persisted this event, we don't need to do any + # more processing. + # The processing above must be done on every call to persist event, + # since they might not have happened on previous calls. For example, + # if we are persisting an event that we had persisted as an outlier, + # but is no longer one. + if have_persisted: + if not outlier: + sql = ( + "UPDATE event_json SET internal_metadata = ?" + " WHERE event_id = ?" + ) + txn.execute( + sql, + (metadata_json.decode("UTF-8"), event.event_id,) + ) + + sql = ( + "UPDATE events SET outlier = 0" + " WHERE event_id = ?" + ) + txn.execute( + sql, + (event.event_id,) + ) + return + if event.type == EventTypes.Member: self._store_room_member_txn(txn, event) elif event.type == EventTypes.Feedback: @@ -154,8 +277,6 @@ class DataStore(RoomMemberStore, RoomStore, elif event.type == EventTypes.Redaction: self._store_redaction(txn, event) - outlier = event.internal_metadata.is_outlier() - event_dict = { k: v for k, v in event.get_dict().items() @@ -165,10 +286,6 @@ class DataStore(RoomMemberStore, RoomStore, ] } - metadata_json = encode_canonical_json( - event.internal_metadata.get_dict() - ) - self._simple_insert_txn( txn, table="event_json", @@ -224,41 +341,10 @@ class DataStore(RoomMemberStore, RoomStore, ) raise _RollbackButIsFineException("_persist_event") - self._handle_prev_events( - txn, - outlier=outlier, - event_id=event.event_id, - prev_events=event.prev_events, - room_id=event.room_id, - ) - - if not outlier: - self._store_state_groups_txn(txn, event, context) - if context.rejected: self._store_rejections_txn(txn, event.event_id, context.rejected) - if current_state: - txn.execute( - "DELETE FROM current_state_events WHERE room_id = ?", - (event.room_id,) - ) - - for s in current_state: - self._simple_insert_txn( - txn, - "current_state_events", - { - "event_id": s.event_id, - "room_id": s.room_id, - "type": s.type, - "state_key": s.state_key, - }, - or_replace=True, - ) - - is_state = hasattr(event, "state_key") and event.state_key is not None - if is_state: + if event.is_state(): vals = { "event_id": event.event_id, "room_id": event.room_id, @@ -266,6 +352,7 @@ class DataStore(RoomMemberStore, RoomStore, "state_key": event.state_key, } + # TODO: How does this work with backfilling? if hasattr(event, "replaces_state"): vals["prev_state"] = event.replaces_state @@ -302,28 +389,6 @@ class DataStore(RoomMemberStore, RoomStore, or_ignore=True, ) - if not backfilled and not context.rejected: - self._simple_insert_txn( - txn, - table="state_forward_extremities", - values={ - "event_id": event.event_id, - "room_id": event.room_id, - "type": event.type, - "state_key": event.state_key, - }, - or_replace=True, - ) - - for prev_state_id, _ in event.prev_state: - self._simple_delete_txn( - txn, - table="state_forward_extremities", - keyvalues={ - "event_id": prev_state_id, - } - ) - for hash_alg, hash_base64 in event.hashes.items(): hash_bytes = decode_base64(hash_base64) self._store_event_content_hash_txn( @@ -354,13 +419,6 @@ class DataStore(RoomMemberStore, RoomStore, txn, event.event_id, ref_alg, ref_hash_bytes ) - if not outlier: - self._update_min_depth_for_room_txn( - txn, - event.room_id, - event.depth - ) - def _store_redaction(self, txn, event): txn.execute( "INSERT OR IGNORE INTO redactions " @@ -477,6 +535,9 @@ class DataStore(RoomMemberStore, RoomStore, the rejected reason string if we rejected the event, else maps to None. """ + if not event_ids: + return defer.succeed({}) + def f(txn): sql = ( "SELECT e.event_id, reason FROM events as e " |