282 lines
8.3 KiB
Go
282 lines
8.3 KiB
Go
/*
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Copyright 2024 The Kubernetes Authors.
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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 testing
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import (
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"fmt"
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"sync"
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"time"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/volume"
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)
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const TestPluginName = "kubernetes.io/testPlugin"
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type TestPlugin struct {
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// SupportCSIVolume allows the plugin to support CSI volumes.
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// It does not mock the actual CSI volume operations.
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SupportCSIVolume bool
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ErrorEncountered bool
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attachedVolumeMap map[string][]string
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detachedVolumeMap map[string][]string
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pluginLock *sync.RWMutex
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}
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func (plugin *TestPlugin) Init(host volume.VolumeHost) error {
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return nil
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}
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func (plugin *TestPlugin) GetPluginName() string {
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return TestPluginName
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}
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func (plugin *TestPlugin) GetVolumeName(spec *volume.Spec) (string, error) {
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plugin.pluginLock.Lock()
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defer plugin.pluginLock.Unlock()
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if spec == nil {
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plugin.ErrorEncountered = true
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return "", fmt.Errorf("GetVolumeName called with nil volume spec")
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}
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if spec.Volume != nil {
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return spec.Name(), nil
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} else if spec.PersistentVolume != nil {
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if spec.PersistentVolume.Spec.PersistentVolumeSource.GCEPersistentDisk != nil {
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return spec.PersistentVolume.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName, nil
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} else if spec.PersistentVolume.Spec.PersistentVolumeSource.NFS != nil {
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return spec.PersistentVolume.Spec.PersistentVolumeSource.NFS.Server, nil
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} else if spec.PersistentVolume.Spec.PersistentVolumeSource.RBD != nil {
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return spec.PersistentVolume.Spec.PersistentVolumeSource.RBD.RBDImage, nil
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} else if spec.PersistentVolume.Spec.PersistentVolumeSource.CSI != nil {
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csi := spec.PersistentVolume.Spec.PersistentVolumeSource.CSI
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return fmt.Sprintf("%s^%s", csi.Driver, csi.VolumeHandle), nil
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}
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return "", fmt.Errorf("GetVolumeName called with unexpected PersistentVolume: %v", spec)
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} else {
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return "", nil
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}
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}
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func (plugin *TestPlugin) CanSupport(spec *volume.Spec) bool {
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plugin.pluginLock.Lock()
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defer plugin.pluginLock.Unlock()
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if spec == nil {
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plugin.ErrorEncountered = true
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} else {
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if spec.Volume != nil && spec.Volume.CSI != nil {
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return plugin.SupportCSIVolume
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}
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if spec.PersistentVolume != nil && spec.PersistentVolume.Spec.CSI != nil {
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return plugin.SupportCSIVolume
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}
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}
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return true
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}
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func (plugin *TestPlugin) RequiresRemount(spec *volume.Spec) bool {
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return false
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}
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func (plugin *TestPlugin) NewMounter(spec *volume.Spec, podRef *v1.Pod, opts volume.VolumeOptions) (volume.Mounter, error) {
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plugin.pluginLock.Lock()
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defer plugin.pluginLock.Unlock()
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if spec == nil {
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plugin.ErrorEncountered = true
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}
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return nil, nil
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}
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func (plugin *TestPlugin) NewUnmounter(name string, podUID types.UID) (volume.Unmounter, error) {
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return nil, nil
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}
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func (plugin *TestPlugin) ConstructVolumeSpec(volumeName, mountPath string) (volume.ReconstructedVolume, error) {
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fakeVolume := &v1.Volume{
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Name: volumeName,
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "pdName",
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FSType: "ext4",
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ReadOnly: false,
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},
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},
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}
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return volume.ReconstructedVolume{
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Spec: volume.NewSpecFromVolume(fakeVolume),
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}, nil
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}
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func (plugin *TestPlugin) NewAttacher() (volume.Attacher, error) {
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attacher := testPluginAttacher{
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ErrorEncountered: &plugin.ErrorEncountered,
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attachedVolumeMap: plugin.attachedVolumeMap,
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pluginLock: plugin.pluginLock,
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}
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return &attacher, nil
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}
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func (plugin *TestPlugin) NewDeviceMounter() (volume.DeviceMounter, error) {
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return plugin.NewAttacher()
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}
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func (plugin *TestPlugin) NewDetacher() (volume.Detacher, error) {
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detacher := testPluginDetacher{
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detachedVolumeMap: plugin.detachedVolumeMap,
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pluginLock: plugin.pluginLock,
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}
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return &detacher, nil
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}
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func (plugin *TestPlugin) CanAttach(spec *volume.Spec) (bool, error) {
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return true, nil
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}
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func (plugin *TestPlugin) CanDeviceMount(spec *volume.Spec) (bool, error) {
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return true, nil
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}
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func (plugin *TestPlugin) NewDeviceUnmounter() (volume.DeviceUnmounter, error) {
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return plugin.NewDetacher()
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}
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func (plugin *TestPlugin) GetDeviceMountRefs(deviceMountPath string) ([]string, error) {
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return []string{}, nil
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}
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func (plugin *TestPlugin) SupportsMountOption() bool {
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return false
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}
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func (plugin *TestPlugin) SupportsBulkVolumeVerification() bool {
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return false
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}
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func (plugin *TestPlugin) SupportsSELinuxContextMount(spec *volume.Spec) (bool, error) {
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return false, nil
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}
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func (plugin *TestPlugin) GetErrorEncountered() bool {
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plugin.pluginLock.RLock()
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defer plugin.pluginLock.RUnlock()
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return plugin.ErrorEncountered
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}
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func (plugin *TestPlugin) GetAttachedVolumes() map[string][]string {
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plugin.pluginLock.RLock()
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defer plugin.pluginLock.RUnlock()
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ret := make(map[string][]string)
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for nodeName, volumeList := range plugin.attachedVolumeMap {
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ret[nodeName] = make([]string, len(volumeList))
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copy(ret[nodeName], volumeList)
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}
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return ret
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}
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func (plugin *TestPlugin) GetDetachedVolumes() map[string][]string {
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plugin.pluginLock.RLock()
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defer plugin.pluginLock.RUnlock()
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ret := make(map[string][]string)
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for nodeName, volumeList := range plugin.detachedVolumeMap {
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ret[nodeName] = make([]string, len(volumeList))
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copy(ret[nodeName], volumeList)
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}
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return ret
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}
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func CreateTestPlugin(supportCSIVolume bool) []volume.VolumePlugin {
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attachedVolumes := make(map[string][]string)
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detachedVolumes := make(map[string][]string)
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return []volume.VolumePlugin{&TestPlugin{
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SupportCSIVolume: supportCSIVolume,
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ErrorEncountered: false,
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attachedVolumeMap: attachedVolumes,
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detachedVolumeMap: detachedVolumes,
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pluginLock: &sync.RWMutex{},
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}}
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}
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// Attacher
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type testPluginAttacher struct {
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ErrorEncountered *bool
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attachedVolumeMap map[string][]string
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pluginLock *sync.RWMutex
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}
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func (attacher *testPluginAttacher) Attach(spec *volume.Spec, nodeName types.NodeName) (string, error) {
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attacher.pluginLock.Lock()
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defer attacher.pluginLock.Unlock()
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if spec == nil {
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*attacher.ErrorEncountered = true
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return "", fmt.Errorf("Attach called with nil volume spec")
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}
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attacher.attachedVolumeMap[string(nodeName)] = append(attacher.attachedVolumeMap[string(nodeName)], spec.Name())
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return spec.Name(), nil
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}
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func (attacher *testPluginAttacher) VolumesAreAttached(specs []*volume.Spec, nodeName types.NodeName) (map[*volume.Spec]bool, error) {
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return nil, nil
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}
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func (attacher *testPluginAttacher) WaitForAttach(spec *volume.Spec, devicePath string, pod *v1.Pod, timeout time.Duration) (string, error) {
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attacher.pluginLock.Lock()
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defer attacher.pluginLock.Unlock()
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if spec == nil {
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*attacher.ErrorEncountered = true
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return "", fmt.Errorf("WaitForAttach called with nil volume spec")
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}
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fakePath := fmt.Sprintf("%s/%s", devicePath, spec.Name())
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return fakePath, nil
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}
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func (attacher *testPluginAttacher) GetDeviceMountPath(spec *volume.Spec) (string, error) {
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attacher.pluginLock.Lock()
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defer attacher.pluginLock.Unlock()
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if spec == nil {
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*attacher.ErrorEncountered = true
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return "", fmt.Errorf("GetDeviceMountPath called with nil volume spec")
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}
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return "", nil
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}
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func (attacher *testPluginAttacher) MountDevice(spec *volume.Spec, devicePath string, deviceMountPath string, _ volume.DeviceMounterArgs) error {
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attacher.pluginLock.Lock()
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defer attacher.pluginLock.Unlock()
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if spec == nil {
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*attacher.ErrorEncountered = true
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return fmt.Errorf("MountDevice called with nil volume spec")
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}
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return nil
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}
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// Detacher
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type testPluginDetacher struct {
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detachedVolumeMap map[string][]string
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pluginLock *sync.RWMutex
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}
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func (detacher *testPluginDetacher) Detach(volumeName string, nodeName types.NodeName) error {
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detacher.pluginLock.Lock()
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defer detacher.pluginLock.Unlock()
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detacher.detachedVolumeMap[string(nodeName)] = append(detacher.detachedVolumeMap[string(nodeName)], volumeName)
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return nil
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}
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func (detacher *testPluginDetacher) UnmountDevice(deviceMountPath string) error {
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return nil
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}
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