list providers init

gistfile1.py

class BaseServiceHandler(BaseHandler):
    """
    To use this class inherit from it and define _DRIVERS and _Providers
    Also to encode to json response custom object add them to obj_attrs dict.
    """
    _DRIVERS = None
    _Providers = None
    _providers_list_response = None

    def _get_driver_instance(self):
        provider_name = self.params.get('provider')
        headers = self.request.headers
        api_data = parse_request_headers(headers)
        Driver = get_driver_by_provider_name(
            self._DRIVERS, self._Providers, provider_name)
        if self.request.query_string == TEST_QUERY_STRING:
            from tests.utils import get_driver_mock_http

            Driver_copy = copy.deepcopy(Driver)
            Driver_copy.connectionCls.conn_classes = get_driver_mock_http(
                Driver.__name__)
            driver_instance = get_driver_instance(Driver_copy, **api_data)
        else:
            driver_instance = get_driver_instance(Driver, **api_data)
        return driver_instance

    def providers(self):
        """

        @return:
        """
        if self._providers_list_response is None:
            providers_dict = get_providers_dict(self._DRIVERS,
                                      self._Providers)
            response = self.json_response(providers_dict)
            self.__class__._providers_list_response = response
        return self._providers_list_response