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,
)
|
