mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-09-10 13:42:02 +00:00
7008196093
The code originates in csi-test and this copyright change was made by the original author in https://github.com/kubernetes-csi/csi-test/pull/324
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
/*
|
|
Copyright 2021 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 cache
|
|
|
|
import (
|
|
"strings"
|
|
"sync"
|
|
|
|
"github.com/container-storage-interface/spec/lib/go/csi"
|
|
)
|
|
|
|
type SnapshotCache interface {
|
|
Add(snapshot Snapshot)
|
|
|
|
Delete(i int)
|
|
|
|
List(ready bool) []csi.Snapshot
|
|
|
|
FindSnapshot(k, v string) (int, Snapshot)
|
|
}
|
|
|
|
type Snapshot struct {
|
|
Name string
|
|
Parameters map[string]string
|
|
SnapshotCSI csi.Snapshot
|
|
}
|
|
|
|
type snapshotCache struct {
|
|
snapshotsRWL sync.RWMutex
|
|
snapshots []Snapshot
|
|
}
|
|
|
|
func NewSnapshotCache() SnapshotCache {
|
|
return &snapshotCache{
|
|
snapshots: make([]Snapshot, 0),
|
|
}
|
|
}
|
|
|
|
func (snap *snapshotCache) Add(snapshot Snapshot) {
|
|
snap.snapshotsRWL.Lock()
|
|
defer snap.snapshotsRWL.Unlock()
|
|
|
|
snap.snapshots = append(snap.snapshots, snapshot)
|
|
}
|
|
|
|
func (snap *snapshotCache) Delete(i int) {
|
|
snap.snapshotsRWL.Lock()
|
|
defer snap.snapshotsRWL.Unlock()
|
|
|
|
copy(snap.snapshots[i:], snap.snapshots[i+1:])
|
|
snap.snapshots = snap.snapshots[:len(snap.snapshots)-1]
|
|
}
|
|
|
|
func (snap *snapshotCache) List(ready bool) []csi.Snapshot {
|
|
snap.snapshotsRWL.RLock()
|
|
defer snap.snapshotsRWL.RUnlock()
|
|
|
|
snapshots := make([]csi.Snapshot, 0)
|
|
for _, v := range snap.snapshots {
|
|
if v.SnapshotCSI.GetReadyToUse() {
|
|
snapshots = append(snapshots, v.SnapshotCSI)
|
|
}
|
|
}
|
|
|
|
return snapshots
|
|
}
|
|
|
|
func (snap *snapshotCache) FindSnapshot(k, v string) (int, Snapshot) {
|
|
snap.snapshotsRWL.RLock()
|
|
defer snap.snapshotsRWL.RUnlock()
|
|
|
|
snapshotIdx := -1
|
|
for i, vi := range snap.snapshots {
|
|
switch k {
|
|
case "id":
|
|
if strings.EqualFold(v, vi.SnapshotCSI.GetSnapshotId()) {
|
|
return i, vi
|
|
}
|
|
case "sourceVolumeId":
|
|
if strings.EqualFold(v, vi.SnapshotCSI.SourceVolumeId) {
|
|
return i, vi
|
|
}
|
|
case "name":
|
|
if vi.Name == v {
|
|
return i, vi
|
|
}
|
|
}
|
|
}
|
|
|
|
return snapshotIdx, Snapshot{}
|
|
}
|