1 files changed, 7 insertions, 0 deletions
diff --git a/synapse/replication/tcp/streams/_base.py b/synapse/replication/tcp/streams/_base.py
index 54dccd15a6..f3ea34f886 100644
--- a/synapse/replication/tcp/streams/_base.py
+++ b/synapse/replication/tcp/streams/_base.py
@@ -31,6 +31,7 @@ from typing import (
 import attr
 
 from synapse.replication.http.streams import ReplicationGetStreamUpdates
+from synapse.replication.tcp.commands import Command
 
 if TYPE_CHECKING:
     import synapse.server
@@ -187,6 +188,12 @@ class Stream:
         )
         return updates, upto_token, limited
 
+    def has_updates(self) -> bool:
+        return self.current_token(self.local_instance_name) != self.last_token
+
+    def extra_commands(self, sent_updates: bool) -> List[Command]:
+        return []
+
 
 def current_token_without_instance(
     current_token: Callable[[], int]