// PluginNameMapper contains utility methods to retrieve names of plugins
// that support a spec, map intree <=> migrated CSI plugin names, etc
type PluginNameMapper interface {
	GetInTreePluginNameFromSpec(pv *v1.PersistentVolume, vol *v1.Volume) (string, error)
	GetCSINameFromInTreeName(pluginName string) (string, error)
}

// PluginManager keeps track of migrated state of in-tree plugins
type PluginManager struct {
	PluginNameMapper

	for _, vol := range attachedVolumes {
		if vol.VolumeName == volumeName1 {
			// devicePath + attachability must have been updated from node.status
			assert.True(t, vol.PluginIsAttachable)
			assert.Equal(t, vol.DevicePath, "fake/path")
		}
		if vol.VolumeName == volumeName2 {
			// only attachability was updated from node.status
			assert.False(t, vol.PluginIsAttachable)

// either the deleter plugin or nil when an external deleter is requested.
func (ctrl *PersistentVolumeController) findDeletablePlugin(volume *v1.PersistentVolume) (vol.DeletableVolumePlugin, error) {
	// Find a plugin. Try to find the same plugin that provisioned the volume
	var plugin vol.DeletableVolumePlugin
	if metav1.HasAnnotation(volume.ObjectMeta, storagehelpers.AnnDynamicallyProvisioned) {

		err                      error
	}{
		{name: "test ok", volID: "vol-test", targetPath: testPath},
		{name: "missing volID", targetPath: testPath, mustFail: true},
		{name: "missing target path", volID: "vol-test", mustFail: true},
		{name: "bad fs", volID: "vol-test", targetPath: testPath, fsType: "badfs", mustFail: true},
		{name: "grpc error", volID: "vol-test", targetPath: testPath, mustFail: true, err: errors.New("grpc error")},

	runningPod := &v1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "runningPod",
			Namespace: testNamespace,
		},
		Spec: v1.PodSpec{
			Volumes: []v1.Volume{
				{
					Name: "vol1",
					VolumeSource: v1.VolumeSource{
						PersistentVolumeClaim: &v1.PersistentVolumeClaimVolumeSource{
							ClaimName: "runningClaim",
						},
					},
				},
			},
		},
		Status: v1.PodStatus{

// stages.
//
// For more on the actual algorithm, see Z. Wang, "Fast algorithms for the
// discrete W transform and for the discrete Fourier transform", IEEE Trans. on
// ASSP, Vol. ASSP- 32, pp. 803-816, Aug. 1984.
func idct(src *block) {
	// Horizontal 1-D IDCT.
	for y := 0; y < 8; y++ {
		y8 := y * 8
		s := src[y8 : y8+8 : y8+8] // Small cap improves performance, see https://golang.org/issue/27857

	asw ActualStateOfWorld) {
	volumes := asw.GetMountedVolumes()
	for _, vol := range volumes {
		if vol.VolumeName == expectedVolumeName {
			if vol.SELinuxMountContext == expectedSELinuxContext {
				return
			}
			t.Errorf(
				"Volume %q has wrong SELinux context, expected %q, got %q",
				expectedVolumeName,
				expectedSELinuxContext,
				vol.SELinuxMountContext)
		}
	}

	mounts := append(petMounts, podMounts...)
	claims := []v1.PersistentVolumeClaim{}
	for _, m := range petMounts {
		claims = append(claims, newPVC(m.Name))
	}

	vols := []v1.Volume{}
	for _, m := range podMounts {
		vols = append(vols, v1.Volume{
			Name: m.Name,
			VolumeSource: v1.VolumeSource{
				HostPath: &v1.HostPathVolumeSource{
					Path: fmt.Sprintf("/tmp/%v", m.Name),
				},
			},
		})

	if podMeta != nil && podMeta.Name != "" {
		for _, vol := range volumes {
			if vol.VolumeSource.Ephemeral != nil {
				allCreatedPVCs.Insert(podMeta.Name + "-" + vol.Name)
			}
		}
	}
	vols := make(map[string]core.VolumeSource)
	for i, vol := range volumes {
		idxPath := fldPath.Index(i)
		namePath := idxPath.Child("name")
		el := validateVolumeSource(&vol.VolumeSource, idxPath, vol.Name, podMeta, opts)
		if len(vol.Name) == 0 {

func newPod(namespace string) api.Pod {
	return api.Pod{
		ObjectMeta: metav1.ObjectMeta{Name: "123", Namespace: namespace},
		Spec: api.PodSpec{
			Volumes:    []api.Volume{{Name: "vol"}},
			Containers: []api.Container{{Name: "ctr", Image: "image"}},
		},
	}
}

// hasCreateNamespaceAction returns true if it has the create namespace action