Merge pull request #224 from chrismeyersfsu/feature-schedule_jobs_no_credentials_fail_fast

restrict the running of jobs

awx/main/models/inventory.py

@@ -1249,6 +1249,19 @@ class InventoryUpdate(UnifiedJob, InventorySourceOptions):
     def task_impact(self):
         return 50
 
+    # InventoryUpdate credential required
+    # Custom InventoryUpdate credential not required
+    @property
+    def can_start(self):
+        if not super(InventoryUpdate, self).can_start:
+            return False
+
+        if (self.source != 'custom'
+                and not (self.credential and self.credential.active)):
+            return False
+        return True
+
+
 class CustomInventoryScript(CommonModelNameNotUnique):
 
     class Meta: