def handler(self, event, context):
"""
Request handler method for fetch resource function.
"""
if event is None or Constants.event_path_parameters() not in event:
return response(http.HTTPStatus.BAD_REQUEST,
Constants.error_insufficient_parameters())
if Constants.event_path_parameter_identifier() not in event[
Constants.event_path_parameters()]:
return response(http.HTTPStatus.BAD_REQUEST,
Constants.error_insufficient_parameters())
_identifier = event[Constants.event_path_parameters()][
Constants.event_path_parameter_identifier()]
_http_method = event[Constants.event_http_method()]
if _http_method == HttpConstants.http_method_get() and _identifier:
_ddb_response = self.__retrieve_resource(_identifier)
if len(_ddb_response[
Constants.ddb_response_attribute_name_items()]) == 0:
return response(http.HTTPStatus.NOT_FOUND,
json.dumps(_ddb_response))
return response(http.HTTPStatus.OK, json.dumps(_ddb_response))
return response(http.HTTPStatus.BAD_REQUEST,
Constants.error_insufficient_parameters())