Call startup commands as system triggers.

This helps ensures that we only consider ourselves "up" once all the
startup functions have completed.

1 files changed, 3 insertions, 1 deletions

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

index 03ef21bd01..cb29a1afab 100644
--- a/synapse/app/user_dir.py
+++ b/synapse/app/user_dir.py
@@ -224,7 +224,9 @@ def start(config_options):
     )
 
     ss.setup()
-    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
+    reactor.addSystemEventTrigger(
+        "before", "startup", _base.start, ss, config.worker_listeners
+    )
 
     _base.start_worker_reactor("synapse-user-dir", config)