WIP: optimize dashboard performance for larger UnifiedJob counts

awx/api/filters.py

@@ -126,7 +126,7 @@ class FieldLookupBackend(BaseFilterBackend):
     '''
 
     RESERVED_NAMES = ('page', 'page_size', 'format', 'order', 'order_by',
-                      'search', 'type', 'host_filter')
+                      'search', 'type', 'host_filter', 'count_disabled',)
 
     SUPPORTED_LOOKUPS = ('exact', 'iexact', 'contains', 'icontains',
                          'startswith', 'istartswith', 'endswith', 'iendswith',

awx/api/pagination.py

@@ -3,14 +3,28 @@
 
 # Django REST Framework
 from django.conf import settings
+from django.core.paginator import Paginator as DjangoPaginator
 from rest_framework import pagination
+from rest_framework.response import Response
 from rest_framework.utils.urls import replace_query_param
 
 
+class DisabledPaginator(DjangoPaginator):
+
+    @property
+    def num_pages(self):
+        return 1
+
+    @property
+    def count(self):
+        return 200
+
+
 class Pagination(pagination.PageNumberPagination):
 
     page_size_query_param = 'page_size'
     max_page_size = settings.MAX_PAGE_SIZE
+    count_disabled = False
 
     def get_next_link(self):
         if not self.page.has_next():
@@ -39,3 +53,17 @@ class Pagination(pagination.PageNumberPagination):
                                  for pl in context['page_links']]
 
         return context
+
+    def paginate_queryset(self, queryset, request, **kwargs):
+        self.count_disabled = 'count_disabled' in request.query_params
+        try:
+            if self.count_disabled:
+                self.django_paginator_class = DisabledPaginator
+            return super(Pagination, self).paginate_queryset(queryset, request, **kwargs)
+        finally:
+            self.django_paginator_class = DjangoPaginator
+
+    def get_paginated_response(self, data):
+        if self.count_disabled:
+            return Response({'results': data})
+        return super(Pagination, self).get_paginated_response(data)

awx/api/views/__init__.py

@@ -245,13 +245,6 @@ class DashboardView(APIView):
                                    'total': hg_projects.count(),
                                    'failed': hg_failed_projects.count()}
 
-        user_jobs = get_user_queryset(request.user, models.Job)
-        user_failed_jobs = user_jobs.filter(failed=True)
-        data['jobs'] = {'url': reverse('api:job_list', request=request),
-                        'failure_url': reverse('api:job_list', request=request) + "?failed=True",
-                        'total': user_jobs.count(),
-                        'failed': user_failed_jobs.count()}
-
         user_list = get_user_queryset(request.user, models.User)
         team_list = get_user_queryset(request.user, models.Team)
         credential_list = get_user_queryset(request.user, models.Credential)