1 files changed, 31 insertions, 0 deletions
diff --git a/synapse/replication/slave/storage/room.py b/synapse/replication/slave/storage/room.py
index d5bb0f98ea..81743941dc 100644
--- a/synapse/replication/slave/storage/room.py
+++ b/synapse/replication/slave/storage/room.py
@@ -15,7 +15,38 @@
 
 from ._base import BaseSlavedStore
 from synapse.storage import DataStore
+from ._slaved_id_tracker import SlavedIdTracker
 
 
 class RoomStore(BaseSlavedStore):
+    def __init__(self, db_conn, hs):
+        super(RoomStore, self).__init__(db_conn, hs)
+        self._public_room_id_gen = SlavedIdTracker(
+            db_conn, "public_room_list_stream", "stream_id"
+        )
+
     get_public_room_ids = DataStore.get_public_room_ids.__func__
+    get_current_public_room_stream_id = (
+        DataStore.get_current_public_room_stream_id.__func__
+    )
+    get_public_room_ids_at_stream_id = (
+        DataStore.get_public_room_ids_at_stream_id.__func__
+    )
+    get_public_room_ids_at_stream_id_txn = (
+        DataStore.get_public_room_ids_at_stream_id_txn.__func__
+    )
+    get_published_at_stream_id_txn = (
+        DataStore.get_published_at_stream_id_txn.__func__
+    )
+
+    def stream_positions(self):
+        result = super(RoomStore, self).stream_positions()
+        result["public_rooms"] = self._public_room_id_gen.get_current_token()
+        return result
+
+    def process_replication(self, result):
+        stream = result.get("public_rooms")
+        if stream:
+            self._public_room_id_gen.advance(int(stream["position"]))
+
+        return super(RoomStore, self).process_replication(result)