config: add app registry feature flag

config.py

@@ -231,6 +231,9 @@ class DefaultConfig(object):
   # Feature Flag: Whether to support signing
   FEATURE_SIGNING = False
 
+  # Feature Flag: Whether to enable support for App repositories.
+  FEATURE_APP_REGISTRY = True
+
   # The namespace to use for library repositories.
   # Note: This must remain 'library' until Docker removes their hard-coded namespace for libraries.
   # See: https://github.com/docker/docker/blob/master/registry/session.go#L320

registry.py

@@ -2,11 +2,12 @@ import logging
 import logging.config
 import os
 
+import endpoints.decorated # Note: We need to import this module to make sure the decorators are registered.
+import features
+
 from app import app as application
 
-# Note: We need to import this module to make sure the decorators are registered.
+from endpoints.appr import appr_bp
-import endpoints.decorated
-
 from endpoints.v1 import v1_bp
 from endpoints.v2 import v2_bp
 
@@ -15,3 +16,6 @@ if os.environ.get('DEBUGLOG') == 'true':
 
 application.register_blueprint(v1_bp, url_prefix='/v1')
 application.register_blueprint(v2_bp, url_prefix='/v2')
+
+if features.APP_REGISTRY:
+  application.register_blueprint(appr_bp, url_prefix='/cnr')

web.py

@@ -2,7 +2,6 @@ import os
 import logging.config
 
 from app import app as application
-
 from endpoints.api import api_bp
 from endpoints.bitbuckettrigger import bitbuckettrigger
 from endpoints.githubtrigger import githubtrigger