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-rw-r--r--synapse/handlers/sync.py10
1 files changed, 10 insertions, 0 deletions
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 0292e06733..72271f2626 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -18,6 +18,7 @@ from ._base import BaseHandler
 from synapse.streams.config import PaginationConfig
 from synapse.api.constants import Membership, EventTypes
 from synapse.util import unwrapFirstError
+from synapse.util.logcontext import LoggingContext
 
 from twisted.internet import defer
 
@@ -140,6 +141,15 @@ class SyncHandler(BaseHandler):
             A Deferred SyncResult.
         """
 
+        context = LoggingContext.current_context()
+        if context:
+            if since_token is None:
+                context.tag = "initial_sync"
+            elif full_state:
+                context.tag = "full_state_sync"
+            else:
+                context.tag = "incremental_sync"
+
         if timeout == 0 or since_token is None or full_state:
             # we are going to return immediately, so don't bother calling
             # notifier.wait_for_events.