auth_service: Fetch revisions of all configs (for UI) at once.

appengine/components/components/auth/ui/ui.py

Index: appengine/components/components/auth/ui/ui.py
diff --git a/appengine/components/components/auth/ui/ui.py b/appengine/components/components/auth/ui/ui.py
index c0b3956a2df13c86bb0832fdfb2dd4af58c96d9c..39a2b08a7f1a8cb13ad151fd2b1604ff621add8f 100644
--- a/appengine/components/components/auth/ui/ui.py
+++ b/appengine/components/components/auth/ui/ui.py
@@ -32,26 +32,26 @@ TEMPLATES_DIR = os.path.join(
 
 # Global static configuration set in 'configure_ui'.
 _ui_app_name = 'Unknown'
-_ui_env_callback = None
+_ui_data_callback = None
 _ui_navbar_tabs = ()
 
 
-def configure_ui(app_name, ui_tabs=None, env_callback=None):
+def configure_ui(app_name, ui_tabs=None, ui_data_callback=None):
   """Modifies global configuration of Auth UI.
 
   Args:
     app_name: name of the service (visible in page headers, titles, etc.)
     ui_tabs: list of UINavbarTabHandler subclasses that define tabs to show, or
         None to show the standard set of tabs.
-    env_callback: callable that returns a dict with additional environment for
-        templates. Will be called each time a template is rendered with single
-        argument: UIHandler instance. Used by auth_service.
+    ui_data_callback: an argumentless callable that returns a dict with
+        additional data to return to authenticated users. It can be used by
+        server and client side code to render templates. Used by auth_service.
   """
   global _ui_app_name
-  global _ui_env_callback
+  global _ui_data_callback
   global _ui_navbar_tabs
   _ui_app_name = app_name
-  _ui_env_callback = env_callback
+  _ui_data_callback = ui_data_callback
   if ui_tabs is not None:
     assert all(issubclass(cls, UINavbarTabHandler) for cls in ui_tabs)
     _ui_navbar_tabs = tuple(ui_tabs)
@@ -339,8 +339,8 @@ class UIHandler(handler.AuthenticatingHandler):
       'using_gae_auth': self.auth_method == handler.gae_cookie_authentication,
       'xsrf_token': self.generate_xsrf_token(),
     }
-    if _ui_env_callback:
-      common.update(_ui_env_callback(self))
+    if _ui_data_callback:
+      common.update(_ui_data_callback())
 
     # Name of Javascript module with page code.
     js_module_name = None