Migrate RuntimeClass to internal API

pkg/apis/node/validation/validation.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package validation
+
+import (
+	apivalidation "k8s.io/apimachinery/pkg/api/validation"
+	"k8s.io/apimachinery/pkg/util/validation/field"
+	"k8s.io/kubernetes/pkg/apis/node"
+)
+
+// ValidateRuntimeClass validates the RuntimeClass
+func ValidateRuntimeClass(rc *node.RuntimeClass) field.ErrorList {
+	allErrs := apivalidation.ValidateObjectMeta(&rc.ObjectMeta, false, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))
+
+	for _, msg := range apivalidation.NameIsDNSLabel(rc.Handler, false) {
+		allErrs = append(allErrs, field.Invalid(field.NewPath("handler"), rc.Handler, msg))
+	}
+
+	return allErrs
+}
+
+// ValidateRuntimeClassUpdate validates an update to the object
+func ValidateRuntimeClassUpdate(new, old *node.RuntimeClass) field.ErrorList {
+	allErrs := apivalidation.ValidateObjectMetaUpdate(&new.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))
+
+	allErrs = append(allErrs, apivalidation.ValidateImmutableField(new.Handler, old.Handler, field.NewPath("handler"))...)
+
+	return allErrs
+}