Add length to the list of events

2 files changed, 10 insertions, 4 deletions

diff --git a/synapse/handlers/federation_event.py b/synapse/handlers/federation_event.py

index 7fa80439b2..61882fb40b 100644
--- a/synapse/handlers/federation_event.py
+++ b/synapse/handlers/federation_event.py
@@ -737,6 +737,11 @@ class FederationEventHandler:
             backfilled: True if this is part of a historical batch of events (inhibits
                 notification to clients, and validation of device keys.)
         """
+        set_attribute(
+            SynapseTags.FUNC_ARG_PREFIX + f"event_ids ({len(events)})",
+            str([event.event_id for event in events]),
+        )
+        set_attribute(SynapseTags.FUNC_ARG_PREFIX + "backfilled", str(backfilled))
         logger.debug(
             "processing pulled backfilled=%s events=%s",
             backfilled,
@@ -1495,9 +1500,10 @@ class FederationEventHandler:
         """
         event_map = {event.event_id: event for event in events}
 
+        event_ids = event_map.keys()
         set_attribute(
-            SynapseTags.FUNC_ARG_PREFIX + "event_ids",
-            str(event_map.keys()),
+            SynapseTags.FUNC_ARG_PREFIX + f"event_ids ({len(event_ids)})",
+            str(event_ids),
         )
 
         # filter out any events we have already seen. This might happen because
@@ -2104,7 +2110,7 @@ class FederationEventHandler:
             if not backfilled:  # Never notify for backfilled events
                 with start_active_span("notify_persisted_events"):
                     set_attribute(
-                        SynapseTags.FUNC_ARG_PREFIX + "event_ids",
+                        SynapseTags.FUNC_ARG_PREFIX + f"event_ids ({len(events)})",
                         str([ev.event_id for ev in events]),
                     )
                     for event in events:
diff --git a/synapse/storage/controllers/persist_events.py b/synapse/storage/controllers/persist_events.py

index 72b4dcef59..7cb69fa4f3 100644
--- a/synapse/storage/controllers/persist_events.py
+++ b/synapse/storage/controllers/persist_events.py
@@ -391,7 +391,7 @@ class EventsPersistenceStorageController:
                 a room that has been un-partial stated.
         """
         set_attribute(
-            SynapseTags.FUNC_ARG_PREFIX + "event_ids",
+            SynapseTags.FUNC_ARG_PREFIX + f"event_ids ({len(events_and_contexts)})",
             str([e.event_id for e, _ in events_and_contexts]),
         )
         set_attribute(SynapseTags.FUNC_ARG_PREFIX + "backfilled", str(backfilled))