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-rw-r--r--synapse/storage/databases/main/state.py19
-rw-r--r--synapse/storage/databases/main/state_deltas.py21
-rw-r--r--synapse/storage/databases/main/stream.py11
3 files changed, 28 insertions, 23 deletions
diff --git a/synapse/storage/databases/main/state.py b/synapse/storage/databases/main/state.py
index 458f169617..5c6168e301 100644
--- a/synapse/storage/databases/main/state.py
+++ b/synapse/storage/databases/main/state.py
@@ -27,6 +27,7 @@ from synapse.storage.database import DatabasePool
 from synapse.storage.databases.main.events_worker import EventsWorkerStore
 from synapse.storage.databases.main.roommember import RoomMemberWorkerStore
 from synapse.storage.state import StateFilter
+from synapse.types import StateMap
 from synapse.util.caches import intern_string
 from synapse.util.caches.descriptors import cached, cachedList
 
@@ -163,15 +164,15 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
         return create_event
 
     @cached(max_entries=100000, iterable=True)
-    def get_current_state_ids(self, room_id):
+    async def get_current_state_ids(self, room_id: str) -> StateMap[str]:
         """Get the current state event ids for a room based on the
         current_state_events table.
 
         Args:
-            room_id (str)
+            room_id: The room to get the state IDs of.
 
         Returns:
-            deferred: dict of (type, state_key) -> event_id
+            The current state of the room.
         """
 
         def _get_current_state_ids_txn(txn):
@@ -184,14 +185,14 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
 
             return {(intern_string(r[0]), intern_string(r[1])): r[2] for r in txn}
 
-        return self.db_pool.runInteraction(
+        return await self.db_pool.runInteraction(
             "get_current_state_ids", _get_current_state_ids_txn
         )
 
     # FIXME: how should this be cached?
-    def get_filtered_current_state_ids(
+    async def get_filtered_current_state_ids(
         self, room_id: str, state_filter: StateFilter = StateFilter.all()
-    ):
+    ) -> StateMap[str]:
         """Get the current state event of a given type for a room based on the
         current_state_events table.  This may not be as up-to-date as the result
         of doing a fresh state resolution as per state_handler.get_current_state
@@ -202,14 +203,14 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
                 from the database.
 
         Returns:
-            defer.Deferred[StateMap[str]]: Map from type/state_key to event ID.
+            Map from type/state_key to event ID.
         """
 
         where_clause, where_args = state_filter.make_sql_filter_clause()
 
         if not where_clause:
             # We delegate to the cached version
-            return self.get_current_state_ids(room_id)
+            return await self.get_current_state_ids(room_id)
 
         def _get_filtered_current_state_ids_txn(txn):
             results = {}
@@ -231,7 +232,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
 
             return results
 
-        return self.db_pool.runInteraction(
+        return await self.db_pool.runInteraction(
             "get_filtered_current_state_ids", _get_filtered_current_state_ids_txn
         )
 
diff --git a/synapse/storage/databases/main/state_deltas.py b/synapse/storage/databases/main/state_deltas.py
index 0d963c98ff..356623fc6e 100644
--- a/synapse/storage/databases/main/state_deltas.py
+++ b/synapse/storage/databases/main/state_deltas.py
@@ -14,8 +14,7 @@
 # limitations under the License.
 
 import logging
-
-from twisted.internet import defer
+from typing import Any, Dict, List, Tuple
 
 from synapse.storage._base import SQLBaseStore
 
@@ -23,7 +22,9 @@ logger = logging.getLogger(__name__)
 
 
 class StateDeltasStore(SQLBaseStore):
-    def get_current_state_deltas(self, prev_stream_id: int, max_stream_id: int):
+    async def get_current_state_deltas(
+        self, prev_stream_id: int, max_stream_id: int
+    ) -> Tuple[int, List[Dict[str, Any]]]:
         """Fetch a list of room state changes since the given stream id
 
         Each entry in the result contains the following fields:
@@ -37,12 +38,12 @@ class StateDeltasStore(SQLBaseStore):
                 if it's new state.
 
         Args:
-            prev_stream_id (int): point to get changes since (exclusive)
-            max_stream_id (int): the point that we know has been correctly persisted
+            prev_stream_id: point to get changes since (exclusive)
+            max_stream_id: the point that we know has been correctly persisted
                - ie, an upper limit to return changes from.
 
         Returns:
-            Deferred[tuple[int, list[dict]]: A tuple consisting of:
+            A tuple consisting of:
                - the stream id which these results go up to
                - list of current_state_delta_stream rows. If it is empty, we are
                  up to date.
@@ -58,7 +59,7 @@ class StateDeltasStore(SQLBaseStore):
             # if the CSDs haven't changed between prev_stream_id and now, we
             # know for certain that they haven't changed between prev_stream_id and
             # max_stream_id.
-            return defer.succeed((max_stream_id, []))
+            return (max_stream_id, [])
 
         def get_current_state_deltas_txn(txn):
             # First we calculate the max stream id that will give us less than
@@ -102,7 +103,7 @@ class StateDeltasStore(SQLBaseStore):
             txn.execute(sql, (prev_stream_id, clipped_stream_id))
             return clipped_stream_id, self.db_pool.cursor_to_dict(txn)
 
-        return self.db_pool.runInteraction(
+        return await self.db_pool.runInteraction(
             "get_current_state_deltas", get_current_state_deltas_txn
         )
 
@@ -114,8 +115,8 @@ class StateDeltasStore(SQLBaseStore):
             retcol="COALESCE(MAX(stream_id), -1)",
         )
 
-    def get_max_stream_id_in_current_state_deltas(self):
-        return self.db_pool.runInteraction(
+    async def get_max_stream_id_in_current_state_deltas(self):
+        return await self.db_pool.runInteraction(
             "get_max_stream_id_in_current_state_deltas",
             self._get_max_stream_id_in_current_state_deltas_txn,
         )
diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py
index 497f607703..24f44a7e36 100644
--- a/synapse/storage/databases/main/stream.py
+++ b/synapse/storage/databases/main/stream.py
@@ -539,7 +539,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
 
         return rows, token
 
-    def get_room_event_before_stream_ordering(self, room_id: str, stream_ordering: int):
+    async def get_room_event_before_stream_ordering(
+        self, room_id: str, stream_ordering: int
+    ) -> Tuple[int, int, str]:
         """Gets details of the first event in a room at or before a stream ordering
 
         Args:
@@ -547,8 +549,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
             stream_ordering:
 
         Returns:
-            Deferred[(int, int, str)]:
-                (stream ordering, topological ordering, event_id)
+            A tuple of (stream ordering, topological ordering, event_id)
         """
 
         def _f(txn):
@@ -563,7 +564,9 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
             txn.execute(sql, (room_id, stream_ordering))
             return txn.fetchone()
 
-        return self.db_pool.runInteraction("get_room_event_before_stream_ordering", _f)
+        return await self.db_pool.runInteraction(
+            "get_room_event_before_stream_ordering", _f
+        )
 
     async def get_room_events_max_id(self, room_id: Optional[str] = None) -> str:
         """Returns the current token for rooms stream.