authdelegate.py

class AuthenticationDelegator(object):
  
      def __init__(self, auth_middlewares):
          self.auth_middlewares = auth_middlewares
        
      def process_request(self, request):
        
            for middlware in self.auth_middlewares:
                try:
                    return middleware.process_request(request):
                except RequestRejected, e:
                    continue
           
            raise RequestRejected