Add countdown for indexing to start

Author: stefanw

celery_haystack/conf.py

@@ -7,6 +7,8 @@
 class CeleryHaystack(AppConf):
     #: The default alias to
     DEFAULT_ALIAS = None
+    #: The delay (in seconds) before task will be executed (Celery countdown)
+    COUNTDOWN = 0
     #: The delay (in seconds) after which a failed index is retried
     RETRY_DELAY = 5 * 60
     #: The number of retries that are done

celery_haystack/utils.py

@@ -31,4 +31,6 @@ def enqueue_task(action, instance):
     kwargs = {}
     if settings.CELERY_HAYSTACK_QUEUE:
         kwargs['queue'] = settings.CELERY_HAYSTACK_QUEUE
-    get_update_task().apply_async([action, identifier], {}, **kwargs)
+    if settings.CELERY_HAYSTACK_COUNTDOWN:
+        kwargs['countdown'] = settings.CELERY_HAYSTACK_COUNTDOWN
+    get_update_task().apply_async((action, identifier), {}, **kwargs)