Move update_client_ip background job from the main process to the background worker. (#12251)

synapse/replication/tcp/commands.py

@@ -356,7 +356,7 @@ class UserIpCommand(Command):
         access_token: str,
         ip: str,
         user_agent: str,
-        device_id: str,
+        device_id: Optional[str],
         last_seen: int,
     ):
         self.user_id = user_id
@@ -389,6 +389,12 @@ class UserIpCommand(Command):
             )
         )
 
+    def __repr__(self) -> str:
+        return (
+            f"UserIpCommand({self.user_id!r}, .., {self.ip!r}, "
+            f"{self.user_agent!r}, {self.device_id!r}, {self.last_seen})"
+        )
+
 
 class RemoteServerUpCommand(_SimpleCommand):
     """Sent when a worker has detected that a remote server is no longer