Avoid fetching unused account data in sync. (#14973)

The per-room account data is no longer unconditionally
fetched, even if all rooms will be filtered out.

Global account data will not be fetched if it will all be
filtered out.

1 files changed, 6 insertions, 4 deletions

diff --git a/synapse/handlers/account_data.py b/synapse/handlers/account_data.py
index 67e789eef7..797de46dbc 100644
--- a/synapse/handlers/account_data.py
+++ b/synapse/handlers/account_data.py
@@ -343,10 +343,12 @@ class AccountDataEventSource(EventSource[int, JsonDict]):
                 }
             )
 
-        (
-            account_data,
-            room_account_data,
-        ) = await self.store.get_updated_account_data_for_user(user_id, last_stream_id)
+        account_data = await self.store.get_updated_global_account_data_for_user(
+            user_id, last_stream_id
+        )
+        room_account_data = await self.store.get_updated_room_account_data_for_user(
+            user_id, last_stream_id
+        )
 
         for account_data_type, content in account_data.items():
             results.append({"type": account_data_type, "content": content})