StorageClass API changes for VolumeBindingMode

pkg/apis/storage/util/util.go

@@ -0,0 +1,30 @@
+/*
+Copyright 2017 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 util
+
+import (
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	"k8s.io/kubernetes/pkg/apis/storage"
+	"k8s.io/kubernetes/pkg/features"
+)
+
+// DropDisabledAlphaFields removes disabled fields from the StorageClass object.
+func DropDisabledAlphaFields(class *storage.StorageClass) {
+	if !utilfeature.DefaultFeatureGate.Enabled(features.VolumeScheduling) {
+		class.VolumeBindingMode = nil
+	}
+}