mirror of
https://github.com/vmware-tanzu/velero.git
synced 2025-12-23 06:15:21 +00:00
126 lines
4.1 KiB
Go
126 lines
4.1 KiB
Go
/*
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Copyright 2017 the Velero contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package actions
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import (
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"strings"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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corev1api "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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v1 "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
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"github.com/vmware-tanzu/velero/pkg/plugin/velero"
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"github.com/vmware-tanzu/velero/pkg/util/actionhelpers"
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)
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// PVCAction inspects a PersistentVolumeClaim for the PersistentVolume
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// that it references and backs it up
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type PVCAction struct {
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log logrus.FieldLogger
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}
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func NewPVCAction(logger logrus.FieldLogger) *PVCAction {
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return &PVCAction{log: logger}
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}
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func (a *PVCAction) AppliesTo() (velero.ResourceSelector, error) {
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return velero.ResourceSelector{
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IncludedResources: []string{"persistentvolumeclaims"},
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}, nil
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}
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// Execute finds the PersistentVolume bound by the provided
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// PersistentVolumeClaim, if any, and backs it up
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func (a *PVCAction) Execute(item runtime.Unstructured, backup *v1.Backup) (runtime.Unstructured, []velero.ResourceIdentifier, error) {
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a.log.Info("Executing PVCAction")
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pvc := new(corev1api.PersistentVolumeClaim)
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if err := runtime.DefaultUnstructuredConverter.FromUnstructured(item.UnstructuredContent(), &pvc); err != nil {
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return nil, nil, errors.Wrap(err, "unable to convert unstructured item to persistent volume claim")
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}
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if pvc.Status.Phase != corev1api.ClaimBound || pvc.Spec.VolumeName == "" {
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return item, nil, nil
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}
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// remove dataSource if exists from prior restored CSI volumes
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if pvc.Spec.DataSource != nil {
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pvc.Spec.DataSource = nil
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}
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if pvc.Spec.DataSourceRef != nil {
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pvc.Spec.DataSourceRef = nil
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}
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// When StorageClassName is set to "", it means no StorageClass is specified,
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// even the default StorageClass is not used. Only keep the Selector for this case.
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// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#reserving-a-persistentvolume
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if pvc.Spec.StorageClassName == nil || *pvc.Spec.StorageClassName != "" {
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// Clean the selector to make the PVC to dynamically allocate PV.
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pvc.Spec.Selector = nil
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}
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// remove label selectors with "velero.io/" prefixing in the key which is left by Velero restore
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if pvc.Spec.Selector != nil && pvc.Spec.Selector.MatchLabels != nil {
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for k := range pvc.Spec.Selector.MatchLabels {
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if strings.HasPrefix(k, "velero.io/") {
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delete(pvc.Spec.Selector.MatchLabels, k)
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}
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}
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}
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// Clean stale Velero labels from main metadata
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if pvc.Labels != nil {
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for k, v := range pvc.Labels {
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if strings.HasPrefix(k, "velero.io/") {
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// Only remove labels that are clearly stale from previous operations
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shouldRemove := false
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// Always remove restore-name labels as these are from previous restores
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if k == "velero.io/restore-name" {
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shouldRemove = true
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}
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// Remove backup-name labels that don't match current backup
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if k == "velero.io/backup-name" && v != backup.Name {
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shouldRemove = true
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}
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// Remove volume-snapshot-name labels from previous CSI backups
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// Note: If this backup creates new CSI snapshots, the CSI action will add them back
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if k == "velero.io/volume-snapshot-name" {
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shouldRemove = true
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}
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if shouldRemove {
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a.log.Infof("Deleting stale Velero label %s=%s from PVC %s", k, v, pvc.Name)
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delete(pvc.Labels, k)
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}
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}
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}
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}
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pvcMap, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&pvc)
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if err != nil {
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return nil, nil, errors.Wrap(err, "unable to convert pvc to unstructured item")
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}
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return &unstructured.Unstructured{Object: pvcMap}, actionhelpers.RelatedItemsForPVC(pvc, a.log), nil
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}
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