1 files changed, 8 insertions, 0 deletions
diff --git a/synapse/logging/opentracing.py b/synapse/logging/opentracing.py
index aa146e8bb8..b8081f197e 100644
--- a/synapse/logging/opentracing.py
+++ b/synapse/logging/opentracing.py
@@ -259,6 +259,14 @@ except ImportError:
 logger = logging.getLogger(__name__)
 
 
+class SynapseTags:
+    # The message ID of any to_device message processed
+    TO_DEVICE_MESSAGE_ID = "to_device.message_id"
+
+    # Whether the sync response has new data to be returned to the client.
+    SYNC_RESULT = "sync.new_data"
+
+
 # Block everything by default
 # A regex which matches the server_names to expose traces for.
 # None means 'block everything'.