mysql procedure error handling

DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
    GET DIAGNOSTICS CONDITION 1 @ERRNO = MYSQL_ERRNO, @MESSAGE_TEXT = MESSAGE_TEXT;
    SELECT 'ERROR' AS STATUS, CONCAT('MySQL ERROR: ', @ERRNO, ': ', @MESSAGE_TEXT) AS MESSAGE;
    ROLLBACK;
END;

stackoverflow.com/questions/26338033/mysql-stored-procedure-print-error-message-and-rollback