package errs import ( "fmt" "github.com/pkg/errors" "strings" ) type CodeError interface { Code() int Msg() string Wrap(msg ...string) error error } func NewCodeError(code int, msg string) CodeError { return &codeError{ code: code, msg: msg, } } type codeError struct { code int msg string detail string } func (e *codeError) Code() int { return e.code } func (e *codeError) Msg() string { return e.msg } func (e *codeError) Wrap(w ...string) error { return errors.Wrap(e, strings.Join(w, ", ")) } func (e *codeError) Error() string { return fmt.Sprintf("[%d]%s", e.code, e.msg) } func Unwrap(err error) error { for err != nil { unwrap, ok := err.(interface { Unwrap() error }) if !ok { break } err = unwrap.Unwrap() } return err }