Shutdown scheduler on South's pre_migrate signal

apps/scheduler/__init__.py

@@ -7,6 +7,8 @@ from .runtime import scheduler
 from django.db.models.signals import post_syncdb
 from django.dispatch import receiver
 
+from south.signals import pre_migrate
+
 from signaler.signals import pre_collectstatic
 
 logger = logging.getLogger(__name__)
@@ -22,3 +24,9 @@ def scheduler_shutdown_post_syncdb(sender, **kwargs):
 def sheduler_shutdown_pre_collectstatic(sender, **kwargs):
     logger.debug('Scheduler shut down on collectstatic signal')
     scheduler.shutdown()
+
+
+@receiver(pre_migrate, dispatch_uid='sheduler_shutdown_pre_migrate')
+def sheduler_shutdown_pre_migrate(sender, **kwargs):
+    logger.debug('Scheduler shut down on pre_migrate signal')
+    scheduler.shutdown()