diff options
Diffstat (limited to 'synapse/storage/state_deltas.py')
| -rw-r--r-- | synapse/storage/state_deltas.py | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/synapse/storage/state_deltas.py b/synapse/storage/state_deltas.py index 56e42f583d..5fdb442104 100644 --- a/synapse/storage/state_deltas.py +++ b/synapse/storage/state_deltas.py @@ -22,6 +22,24 @@ logger = logging.getLogger(__name__) class StateDeltasStore(SQLBaseStore): def get_current_state_deltas(self, prev_stream_id): + """Fetch a list of room state changes since the given stream id + + Each entry in the result contains the following fields: + - stream_id (int) + - room_id (str) + - type (str): event type + - state_key (str): + - event_id (str|None): new event_id for this state key. None if the + state has been deleted. + - prev_event_id (str|None): previous event_id for this state key. None + if it's new state. + + Args: + prev_stream_id (int): point to get changes since (exclusive) + + Returns: + Deferred[list[dict]]: results + """ prev_stream_id = int(prev_stream_id) if not self._curr_state_delta_stream_cache.has_any_entity_changed( prev_stream_id @@ -66,10 +84,16 @@ class StateDeltasStore(SQLBaseStore): "get_current_state_deltas", get_current_state_deltas_txn ) - def get_max_stream_id_in_current_state_deltas(self): - return self._simple_select_one_onecol( + def _get_max_stream_id_in_current_state_deltas_txn(self, txn): + return self._simple_select_one_onecol_txn( + txn, table="current_state_delta_stream", keyvalues={}, retcol="COALESCE(MAX(stream_id), -1)", - desc="get_max_stream_id_in_current_state_deltas", + ) + + def get_max_stream_id_in_current_state_deltas(self): + return self.runInteraction( + "get_max_stream_id_in_current_state_deltas", + self._get_max_stream_id_in_current_state_deltas_txn, ) |