008 Error Design

enum UserErrorsEnum {

  option (hope.swagger.enm) = {
    description: "User account management errors";
  };

  USER_EXIST = 0  [
    (hope.constant.field) = {
      code: 1001023, message: "customer already exist", message2: "用户存在",
      error: {
        tips: "contact your admin",
        phase: DOMAIN,
        severity: FATAL,
      }}];
}

@ProtoFrom(
        value = "com/apihug/demo/user/proto/infra/settings/admin/error.proto",
        entity = "UserErrorsEnum",
        kind = Kind.ENUM
)
public enum UserErrorsEnum implements Errors {
    INSTANCE;

    public static final List<Error> ERRORS = new ArrayList();

    public static final Map<String, Error> ERRORS_MAP;

    public static final Error UNDEFINED = Error.unknown().setDomain("user").setTitle("UNDEFINED");

    public static final Error USER_EXIST = new Error();

    public static final Error USER_BLOCKED = new Error();

    static {
        Map<String, Error> _ERRORS_MAP = new LinkedHashMap<>();
        USER_EXIST.setDomain("user");
        USER_EXIST.setCode(1001023);
        USER_EXIST.setDescription("customer already exist");
        USER_EXIST.setDescription2("用户存在");
        USER_EXIST.setTitle("USER_EXIST");
        USER_EXIST.setTips("contact your admin");
        USER_EXIST.setPhase(Phase.DOMAIN);
        USER_EXIST.setSeverity(Severity.FATAL);
        _ERRORS_MAP.put("USER_EXIST", USER_EXIST);
        //...
    }
}