Add some type hints to datastore (#12485)

synapse/storage/databases/main/presence.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from typing import TYPE_CHECKING, Dict, Iterable, List, Tuple, cast
+from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Tuple, cast
 
 from synapse.api.presence import PresenceState, UserPresenceState
 from synapse.replication.tcp.streams import PresenceStream
@@ -103,7 +103,9 @@ class PresenceStore(PresenceBackgroundUpdateStore):
             prefilled_cache=presence_cache_prefill,
         )
 
-    async def update_presence(self, presence_states) -> Tuple[int, int]:
+    async def update_presence(
+        self, presence_states: List[UserPresenceState]
+    ) -> Tuple[int, int]:
         assert self._can_persist_presence
 
         stream_ordering_manager = self._presence_id_gen.get_next_mult(
@@ -121,7 +123,10 @@ class PresenceStore(PresenceBackgroundUpdateStore):
         return stream_orderings[-1], self._presence_id_gen.get_current_token()
 
     def _update_presence_txn(
-        self, txn: LoggingTransaction, stream_orderings, presence_states
+        self,
+        txn: LoggingTransaction,
+        stream_orderings: List[int],
+        presence_states: List[UserPresenceState],
     ) -> None:
         for stream_id, state in zip(stream_orderings, presence_states):
             txn.call_after(
@@ -405,7 +410,13 @@ class PresenceStore(PresenceBackgroundUpdateStore):
         self._presence_on_startup = []
         return active_on_startup
 
-    def process_replication_rows(self, stream_name, instance_name, token, rows) -> None:
+    def process_replication_rows(
+        self,
+        stream_name: str,
+        instance_name: str,
+        token: int,
+        rows: Iterable[Any],
+    ) -> None:
         if stream_name == PresenceStream.NAME:
             self._presence_id_gen.advance(instance_name, token)
             for row in rows: