vendor files

vendor/k8s.io/kubernetes/pkg/api/persistentvolume/util.go

@@ -0,0 +1,116 @@
+/*
+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 persistentvolume
+
+import (
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	api "k8s.io/kubernetes/pkg/apis/core"
+	"k8s.io/kubernetes/pkg/features"
+)
+
+func getClaimRefNamespace(pv *api.PersistentVolume) string {
+	if pv.Spec.ClaimRef != nil {
+		return pv.Spec.ClaimRef.Namespace
+	}
+	return ""
+}
+
+// Visitor is called with each object's namespace and name, and returns true if visiting should continue
+type Visitor func(namespace, name string) (shouldContinue bool)
+
+// VisitPVSecretNames invokes the visitor function with the name of every secret
+// referenced by the PV spec. If visitor returns false, visiting is short-circuited.
+// Returns true if visiting completed, false if visiting was short-circuited.
+func VisitPVSecretNames(pv *api.PersistentVolume, visitor Visitor) bool {
+	source := &pv.Spec.PersistentVolumeSource
+	switch {
+	case source.AzureFile != nil:
+		if source.AzureFile.SecretNamespace != nil && len(*source.AzureFile.SecretNamespace) > 0 {
+			if len(source.AzureFile.SecretName) > 0 && !visitor(*source.AzureFile.SecretNamespace, source.AzureFile.SecretName) {
+				return false
+			}
+		} else {
+			if len(source.AzureFile.SecretName) > 0 && !visitor(getClaimRefNamespace(pv), source.AzureFile.SecretName) {
+				return false
+			}
+		}
+		return true
+	case source.CephFS != nil:
+		if source.CephFS.SecretRef != nil {
+			// previously persisted PV objects use claimRef namespace
+			ns := getClaimRefNamespace(pv)
+			if len(source.CephFS.SecretRef.Namespace) > 0 {
+				// use the secret namespace if namespace is set
+				ns = source.CephFS.SecretRef.Namespace
+			}
+			if !visitor(ns, source.CephFS.SecretRef.Name) {
+				return false
+			}
+		}
+	case source.FlexVolume != nil:
+		if source.FlexVolume.SecretRef != nil && !visitor(getClaimRefNamespace(pv), source.FlexVolume.SecretRef.Name) {
+			return false
+		}
+	case source.RBD != nil:
+		if source.RBD.SecretRef != nil {
+			// previously persisted PV objects use claimRef namespace
+			ns := getClaimRefNamespace(pv)
+			if len(source.RBD.SecretRef.Namespace) > 0 {
+				// use the secret namespace if namespace is set
+				ns = source.RBD.SecretRef.Namespace
+			}
+			if !visitor(ns, source.RBD.SecretRef.Name) {
+				return false
+			}
+		}
+	case source.ScaleIO != nil:
+		if source.ScaleIO.SecretRef != nil {
+			ns := getClaimRefNamespace(pv)
+			if source.ScaleIO.SecretRef != nil && len(source.ScaleIO.SecretRef.Namespace) > 0 {
+				ns = source.ScaleIO.SecretRef.Namespace
+			}
+			if !visitor(ns, source.ScaleIO.SecretRef.Name) {
+				return false
+			}
+		}
+	case source.ISCSI != nil:
+		if source.ISCSI.SecretRef != nil {
+			// previously persisted PV objects use claimRef namespace
+			ns := getClaimRefNamespace(pv)
+			if len(source.ISCSI.SecretRef.Namespace) > 0 {
+				// use the secret namespace if namespace is set
+				ns = source.ISCSI.SecretRef.Namespace
+			}
+			if !visitor(ns, source.ISCSI.SecretRef.Name) {
+				return false
+			}
+		}
+	case source.StorageOS != nil:
+		if source.StorageOS.SecretRef != nil && !visitor(source.StorageOS.SecretRef.Namespace, source.StorageOS.SecretRef.Name) {
+			return false
+		}
+	}
+	return true
+}
+
+// DropDisabledAlphaFields removes disabled fields from the pv spec.
+// This should be called from PrepareForCreate/PrepareForUpdate for all resources containing a pv spec.
+func DropDisabledAlphaFields(pvSpec *api.PersistentVolumeSpec) {
+	if !utilfeature.DefaultFeatureGate.Enabled(features.BlockVolume) {
+		pvSpec.VolumeMode = nil
+	}
+}