Add hostname tag and fix dnsLabel validation issue

generator/generator.go

@@ -78,6 +78,8 @@ func getTypeString(nullable bool, typeName string, schema *types.Schema, schemas
 		return "intstr.IntOrString"
 	case "dnsLabel":
 		return "string"
+	case "hostname":
+		return "string"
 	default:
 		if schema != nil && schemas != nil {
 			otherSchema := schemas.Schema(&schema.Version, typeName)

parse/builder/builder.go

@@ -261,6 +261,18 @@ func (b *Builder) convert(fieldType string, value interface{}, op Operation) (in
 	case "string":
 		return convert.ToString(value), nil
 	case "dnsLabel":
+		str := convert.ToString(value)
+		if str == "" {
+			return "", nil
+		}
+		if op == Create || op == Update {
+			if errs := validation.IsDNS1123Label(str); len(errs) != 0 {
+				return value, httperror.NewAPIError(httperror.InvalidFormat, fmt.Sprintf("invalid value %s: %s", value,
+					strings.Join(errs, ",")))
+			}
+		}
+		return str, nil
+	case "hostname":
 		str := convert.ToString(value)
 		if str == "" {
 			return "", nil

types/reflection.go

@@ -101,6 +101,8 @@ func (s *Schemas) setupFilters(schema *Schema) {
 			mods = []ModifierType{ModifierEQ, ModifierNE, ModifierIn, ModifierNotIn}
 		case "dnsLabel":
 			fallthrough
+		case "hostname":
+			fallthrough
 		case "string":
 			mods = []ModifierType{ModifierEQ, ModifierNE, ModifierIn, ModifierNotIn}
 		case "int":