84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
/*
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Copyright 2018 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 backup
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import (
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"fmt"
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corev1api "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// pvcSnapshotTracker keeps track of persistent volume claims that have been snapshotted
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// with restic.
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type pvcSnapshotTracker struct {
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pvcs sets.String
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}
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func newPVCSnapshotTracker() *pvcSnapshotTracker {
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return &pvcSnapshotTracker{
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pvcs: sets.NewString(),
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}
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}
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// Track takes a pod and a list of volumes from that pod that were snapshotted, and
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// tracks each snapshotted volume that's a PVC.
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func (t *pvcSnapshotTracker) Track(pod *corev1api.Pod, snapshottedVolumes []string) {
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for _, volumeName := range snapshottedVolumes {
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// if the volume is a PVC, track it
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for _, volume := range pod.Spec.Volumes {
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if volume.Name == volumeName {
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if volume.PersistentVolumeClaim != nil {
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t.pvcs.Insert(key(pod.Namespace, volume.PersistentVolumeClaim.ClaimName))
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}
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break
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}
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}
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}
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}
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// Has returns true if the PVC with the specified namespace and name has been tracked.
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func (t *pvcSnapshotTracker) Has(namespace, name string) bool {
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return t.pvcs.Has(key(namespace, name))
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}
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// HasPVCForPodVolume returns true and the PVC's name if the pod volume with the specified name uses a
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// PVC and that PVC has been tracked.
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func (t *pvcSnapshotTracker) HasPVCForPodVolume(pod *corev1api.Pod, volume string) (bool, string) {
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for _, podVolume := range pod.Spec.Volumes {
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if podVolume.Name != volume {
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continue
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}
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if podVolume.PersistentVolumeClaim == nil {
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return false, ""
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}
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if !t.pvcs.Has(key(pod.Namespace, podVolume.PersistentVolumeClaim.ClaimName)) {
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return false, ""
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}
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return true, podVolume.PersistentVolumeClaim.ClaimName
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}
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return false, ""
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}
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func key(namespace, name string) string {
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return fmt.Sprintf("%s/%s", namespace, name)
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}
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