Fix up how the pager view works and how we return errors from some views

so that we can propogate non 200 statuses

awx/api/utils/decorators.py

@@ -7,6 +7,7 @@ import functools
 
 from rest_framework.response import Response
 from rest_framework.settings import api_settings
+from rest_framework import status
 
 def paginated(method):
     """Given an method with a Django REST Framework API method signature
@@ -46,29 +47,34 @@ def paginated(method):
         kwargs['ordering'] = ordering
 
         # Okay, call the underlying method.
-        results, count = method(self, request, *args, **kwargs)
+        results, count, stat = method(self, request, *args, **kwargs)
+        if stat is None:
+            stat = status.HTTP_200_OK
 
-        # Determine the next and previous pages, if any.
-        prev, next_ = None, None
-        if page > 1:
-            get_copy = copy.copy(request.GET)
-            get_copy['page'] = page - 1
-            prev = '%s?%s' % (request.path, get_copy.urlencode())
-        if count > offset + limit:
-            get_copy = copy.copy(request.GET)
-            get_copy['page'] = page + 1
-            next_ = '%s?%s' % (request.path, get_copy.urlencode())
+        if stat == status.HTTP_200_OK:
+            # Determine the next and previous pages, if any.
+            prev, next_ = None, None
+            if page > 1:
+                get_copy = copy.copy(request.GET)
+                get_copy['page'] = page - 1
+                prev = '%s?%s' % (request.path, get_copy.urlencode())
+            if count > offset + limit:
+                get_copy = copy.copy(request.GET)
+                get_copy['page'] = page + 1
+                next_ = '%s?%s' % (request.path, get_copy.urlencode())
 
-        # Compile the results into a dictionary with pagination
-        # information.
-        answer = collections.OrderedDict((
-            ('count', count),
-            ('next', next_),
-            ('previous', prev),
-            ('results', results),
-        ))
+            # Compile the results into a dictionary with pagination
+            # information.
+            answer = collections.OrderedDict((
+                ('count', count),
+                ('next', next_),
+                ('previous', prev),
+                ('results', results),
+            ))
+        else:
+            answer = results
 
         # Okay, we're done; return response data.
-        return Response(answer)
+        return Response(answer, status=stat)
     return func
 

awx/api/views.py

@@ -1630,7 +1630,10 @@ class JobJobPlaysList(BaseJobEventsList):
     @paginated
     def get(self, request, limit, offset, ordering, *args, **kwargs):
         all_plays = []
-        job = get_object_or_404(self.parent_model, pk=self.kwargs['pk'])
+        job = Job.objects.filter(pk=self.kwargs['pk'])
+        if not job.exists():
+            return ({'detail': 'job not found'}, -1, status.HTTP_404_NOT_FOUND)
+        job = job[0]
 
         # Put together a queryset for relevant job events.
         qs = job.job_events.filter(event='playbook_on_play_start')
@@ -1686,7 +1689,7 @@ class JobJobPlaysList(BaseJobEventsList):
             all_plays.append(play_details)
 
         # Done; return the plays and the total count.
-        return all_plays, count
+        return all_plays, count, None
 
 
 class JobJobTasksList(BaseJobEventsList):
@@ -1709,11 +1712,18 @@ class JobJobTasksList(BaseJobEventsList):
 
         # Get the job and the parent task.
         # If there's no event ID specified, this will return a 404.
-        # FIXME: Make this a good error message.
-        job = get_object_or_404(self.parent_model, pk=self.kwargs['pk'])
-        parent_task = get_object_or_404(job.job_events,
-            pk=int(request.QUERY_PARAMS.get('event_id', -1)),
-        )
+        job = Job.objects.filter(pk=self.kwargs['pk'])
+        if not job.exists():
+            return ({'detail': 'job not found'}, -1, status.HTTP_404_NOT_FOUND)
+        job = job[0]
+
+        if 'event_id' not in request.QUERY_PARAMS:
+            return ({'detail': '"event_id" not provided'}, -1, status.HTTP_400_BAD_REQUEST)
+
+        parent_task = job.job_events.filter(pk=int(request.QUERY_PARAMS.get('event_id', -1)))
+        if not parent_task.exists():
+            return ({'detail': 'parent event not found'}, -1, status.HTTP_404_NOT_FOUND)
+        parent_task = parent_task[0]
 
         # Some events correspond to a playbook or task starting up,
         # and these are what we're interested in here.
@@ -1818,7 +1828,7 @@ class JobJobTasksList(BaseJobEventsList):
             results.append(task_data)
 
         # Done; return the results and count.
-        return results, count
+        return (results, count, None)
 
 
 class UnifiedJobTemplateList(ListAPIView):