Ensure the proper handlers are loaded during start-up.

synapse/app/homeserver.py

@@ -389,8 +389,6 @@ def setup(config_options):
     except UpgradeDatabaseException as e:
         quit_with_error("Failed to upgrade database: %s" % (e,))
 
-    hs.setup_master()
-
     async def do_acme() -> bool:
         """
         Reprovision an ACME certificate, if it's required.

synapse/server.py

@@ -185,7 +185,17 @@ class HomeServer(metaclass=abc.ABCMeta):
             we are listening on to provide HTTP services.
     """
 
-    REQUIRED_ON_MASTER_STARTUP = ["user_directory_handler", "stats_handler"]
+    REQUIRED_ON_BACKGROUND_TASK_STARTUP = [
+        "account_validity",
+        "auth",
+        "deactivate_account",
+        "device",
+        "message",
+        "pagination",
+        "profile",
+        "stats",
+        "user_directory",
+    ]
 
     # This is overridden in derived application classes
     # (such as synapse.app.homeserver.SynapseHomeServer) and gives the class to be
@@ -251,14 +261,17 @@ class HomeServer(metaclass=abc.ABCMeta):
         self.datastores = Databases(self.DATASTORE_CLASS, self)
         logger.info("Finished setting up.")
 
-    def setup_master(self) -> None:
+        if self.config.run_background_tasks:
+            self.setup_background_tasks()
+
+    def setup_background_tasks(self) -> None:
         """
         Some handlers have side effects on instantiation (like registering
         background updates). This function causes them to be fetched, and
         therefore instantiated, to run those side effects.
         """
-        for i in self.REQUIRED_ON_MASTER_STARTUP:
-            getattr(self, "get_" + i)()
+        for i in self.REQUIRED_ON_BACKGROUND_TASK_STARTUP:
+            getattr(self, "get_" + i + "_handler")()
 
     def get_reactor(self) -> twisted.internet.base.ReactorBase:
         """

tests/utils.py

@@ -276,7 +276,7 @@ def setup_test_homeserver(
 
         hs.setup()
         if homeserverToUse.__name__ == "TestHomeServer":
-            hs.setup_master()
+            hs.setup_background_tasks()
 
         if isinstance(db_engine, PostgresEngine):
             database = hs.get_datastores().databases[0]