Fix Docker Auth and our V2 registry paths to support library (i.e. namespace-less) repositories.

This support is placed behind a feature flag.

endpoints/common.py

@@ -23,6 +23,7 @@ from functools import wraps
 from config import frontend_visible_config
 from external_libraries import get_external_javascript, get_external_css
 from util.secscan.api import PRIORITY_LEVELS
+from util.names import parse_namespace_repository
 
 import features
 
@@ -47,11 +48,24 @@ def get_cache_busters():
     return CACHE_BUSTERS
 
 
-class RepoPathConverter(BaseConverter):
-  regex = '[\.a-zA-Z0-9_\-]+/[\.a-zA-Z0-9_\-]+'
-  weight = 200
+def parse_repository_name(f):
+  @wraps(f)
+  def wrapper(repository, *args, **kwargs):
+    lib_namespace = app.config['LIBRARY_NAMESPACE']
+    (namespace, repository) = parse_namespace_repository(repository, lib_namespace)
+    return f(namespace, repository, *args, **kwargs)
+  return wrapper
+
+
+def parse_repository_name_and_tag(f):
+  @wraps(f)
+  def wrapper(repository, *args, **kwargs):
+    lib_namespace = app.config['LIBRARY_NAMESPACE']
+    namespace, repository, tag = parse_namespace_repository(repository, lib_namespace,
+                                                            include_tag=True)
+    return f(namespace, repository, tag, *args, **kwargs)
+  return wrapper
 
-app.url_map.converters['repopath'] = RepoPathConverter
 
 def route_show_if(value):
   def decorator(f):