Do not bundle aggregations for APIs which shouldn't include them. (#11592)

And make bundling aggregations opt-in, instead of opt-out to avoid
having APIs to include extraneous data (and being much heavier than
necessary).

2 files changed, 9 insertions, 5 deletions

diff --git a/synapse/rest/client/relations.py b/synapse/rest/client/relations.py
index ffa37ef06c..5815650ee6 100644
--- a/synapse/rest/client/relations.py
+++ b/synapse/rest/client/relations.py
@@ -232,7 +232,9 @@ class RelationPaginationServlet(RestServlet):
         )
         # The relations returned for the requested event do include their
         # bundled aggregations.
-        serialized_events = await self._event_serializer.serialize_events(events, now)
+        serialized_events = await self._event_serializer.serialize_events(
+            events, now, bundle_aggregations=True
+        )
 
         return_value = pagination_chunk.to_dict()
         return_value["chunk"] = serialized_events
diff --git a/synapse/rest/client/room.py b/synapse/rest/client/room.py
index 60719331b6..40330749e5 100644
--- a/synapse/rest/client/room.py
+++ b/synapse/rest/client/room.py
@@ -662,7 +662,9 @@ class RoomEventServlet(RestServlet):
 
         time_now = self.clock.time_msec()
         if event:
-            event_dict = await self._event_serializer.serialize_event(event, time_now)
+            event_dict = await self._event_serializer.serialize_event(
+                event, time_now, bundle_aggregations=True
+            )
             return 200, event_dict
 
         raise SynapseError(404, "Event not found.", errcode=Codes.NOT_FOUND)
@@ -707,13 +709,13 @@ class RoomEventContextServlet(RestServlet):
 
         time_now = self.clock.time_msec()
         results["events_before"] = await self._event_serializer.serialize_events(
-            results["events_before"], time_now
+            results["events_before"], time_now, bundle_aggregations=True
         )
         results["event"] = await self._event_serializer.serialize_event(
-            results["event"], time_now
+            results["event"], time_now, bundle_aggregations=True
         )
         results["events_after"] = await self._event_serializer.serialize_events(
-            results["events_after"], time_now
+            results["events_after"], time_now, bundle_aggregations=True
         )
         results["state"] = await self._event_serializer.serialize_events(
             results["state"], time_now