I’m trying to understand how does the open api sepcification work using go language.

I created yaml file which I want to generate to my go code for requests and responses structs.

But some structs need the custom validator. So wrote it in this way:

var validate *validator.Validate

func init() {
  validate = validator.New()
  if err := validate.RegisterValidation("email", validateEmail); err != nil {
    logger.Fatalf("Couldn't register email validator, err=%v", err)
  }
}

func validateEmail(fl validator.FieldLevel) bool {
  email := fl.Field().String()

  emailRegex := `^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$`

  return regexp.MustCompile(emailRegex).MatchString(email)
}

So I can write struct with such validator now

type somStruct struct {
  Email string `validate:"email"`
}

So is it possible to add to open api specification that will be generated to such struct?