Port synapse.replication.tcp to async/await (#6666)

* Port synapse.replication.tcp to async/await

* Newsfile

* Correctly document type of on_<FOO> functions as async

* Don't be overenthusiastic with the asyncing....

1 files changed, 1 insertions, 2 deletions

diff --git a/synapse/app/admin_cmd.py b/synapse/app/admin_cmd.py

index 8e36bc57d3..1c7c6ec0c8 100644
--- a/synapse/app/admin_cmd.py
+++ b/synapse/app/admin_cmd.py
@@ -84,8 +84,7 @@ class AdminCmdServer(HomeServer):
 
 
 class AdminCmdReplicationHandler(ReplicationClientHandler):
-    @defer.inlineCallbacks
-    def on_rdata(self, stream_name, token, rows):
+    async def on_rdata(self, stream_name, token, rows):
         pass
 
     def get_streams_to_replicate(self):