Update go dependencies and cleanup deprecated packages

vendor/k8s.io/kubernetes/pkg/volume/util/finalizer.go

@@ -0,0 +1,68 @@
+/*
+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 (
+	"k8s.io/api/core/v1"
+)
+
+const (
+	// Name of finalizer on PVCs that have a running pod.
+	PVCProtectionFinalizer = "kubernetes.io/pvc-protection"
+)
+
+// IsPVCBeingDeleted returns:
+// true: in case PVC is being deleted, i.e. ObjectMeta.DeletionTimestamp is set
+// false: in case PVC is not being deleted, i.e. ObjectMeta.DeletionTimestamp is nil
+func IsPVCBeingDeleted(pvc *v1.PersistentVolumeClaim) bool {
+	return pvc.ObjectMeta.DeletionTimestamp != nil
+}
+
+// IsProtectionFinalizerPresent returns true in case PVCProtectionFinalizer is
+// present among the pvc.Finalizers
+func IsProtectionFinalizerPresent(pvc *v1.PersistentVolumeClaim) bool {
+	for _, finalizer := range pvc.Finalizers {
+		if finalizer == PVCProtectionFinalizer {
+			return true
+		}
+	}
+	return false
+}
+
+// RemoveProtectionFinalizer returns pvc without PVCProtectionFinalizer in case
+// it's present in pvc.Finalizers. It expects that pvc is writable (i.e. is not
+// informer's cached copy.)
+func RemoveProtectionFinalizer(pvc *v1.PersistentVolumeClaim) {
+	newFinalizers := make([]string, 0)
+	for _, finalizer := range pvc.Finalizers {
+		if finalizer != PVCProtectionFinalizer {
+			newFinalizers = append(newFinalizers, finalizer)
+		}
+	}
+	if len(newFinalizers) == 0 {
+		// Sanitize for unit tests so we don't need to distinguish empty array
+		// and nil.
+		newFinalizers = nil
+	}
+	pvc.Finalizers = newFinalizers
+}
+
+// AddProtectionFinalizer adds PVCProtectionFinalizer to pvc. It expects that
+// pvc is writable (i.e. is not informer's cached copy.)
+func AddProtectionFinalizer(pvc *v1.PersistentVolumeClaim) {
+	pvc.Finalizers = append(pvc.Finalizers, PVCProtectionFinalizer)
+}