Provide default implementation of fetch_pending to remove redundant code

from steps.

diff --git a/planetstack/openstack_observer/syncstep.py b/planetstack/openstack_observer/syncstep.py
index fc0cb0b..dcfea7d 100644 (file)
--- a/planetstack/openstack_observer/syncstep.py
+++ b/planetstack/openstack_observer/syncstep.py
@@ -44,7 +44,16 @@ class SyncStep:
         return
 
     def fetch_pending(self, deletion=False):
-        return []
+        # This is the most common implementation of fetch_pending
+        # Steps should override it if they have their own logic
+        # for figuring out what objects are outstanding.
+        main_obj = self.provides[0]
+        if (not deleted):
+            objs = main_obj.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
+        else:
+            objs = main_obj.deleted_objects.all()
+
+        return objs
         #return Sliver.objects.filter(ip=None)
     
     def check_dependencies(self, obj, failed):