add schedule_deletion method and signal

awx/main/models/inventory.py

@@ -373,6 +373,16 @@ class Inventory(CommonModelNameNotUnique, ResourceMixin):
             raise ValidationError(_("Credential kind must be 'insights'."))
         return self.insights_credential
 
+    @transaction.atomic
+    def schedule_deletion(self):
+        from awx.main.tasks import delete_inventory
+        if self.pending_deletion is True:
+            raise RuntimeError("Inventory is already pending deletion.")
+        self.websocket_emit_status('pending_deletion')
+        delete_inventory.delay(self.pk)
+        self.pending_deletion = True
+        self.save(update_fields=['pending_deletion'])
+
 
 class SmartInventoryMembership(BaseModel):
     '''

awx/main/signals.py

@@ -510,3 +510,13 @@ def get_current_user_from_drf_request(sender, **kwargs):
     request = get_current_request()
     drf_request = getattr(request, 'drf_request', None)
     return (getattr(drf_request, 'user', False), 0)
+
+
+@receiver(pre_delete, sender=Organization)
+def delete_inventory_for_org(sender, instance, **kwargs):
+    inventories = Inventory.objects.filter(organization__pk=instance.pk)
+    for inventory in inventories:
+        try:
+            inventory.schedule_deletion()
+        except RuntimeError, e:
+            logger.debug(e)