Merge pull request #2993 from coreos-inc/joseph.schorr/QUAY-797/pagination-size

Allow size of pages in V2 api to be configurable

config.py

@@ -503,3 +503,6 @@ class DefaultConfig(ImmutableConfig):
 
   # Feature Flag: If enabled, users can create and use app specific tokens to login via the CLI.
   FEATURE_APP_SPECIFIC_TOKENS = True
+
+  # The size of pages returned by the Docker V2 API.
+  V2_PAGINATION_SIZE = 50

endpoints/v2/__init__.py

@@ -41,7 +41,7 @@ def handle_registry_v2_exception(error):
   return response
 
 
-_MAX_RESULTS_PER_PAGE = 50
+_MAX_RESULTS_PER_PAGE = app.config.get('V2_PAGINATION_SIZE', 50)
 
 
 def paginate(limit_kwarg_name='limit', offset_kwarg_name='offset',

util/config/schema.py

@@ -383,6 +383,10 @@ CONFIG_SCHEMA = {
       'description': 'The types of avatars to display, either generated inline (local) or Gravatar (gravatar)',
       'enum': ['local', 'gravatar'],
     },
+    'V2_PAGINATION_SIZE': {
+      'type': 'number',
+      'description': 'The number of results returned per page in V2 registry APIs',
+    },
 
     # Time machine and tag expiration settings.
     'FEATURE_CHANGE_TAG_EXPIRATION': {