"k8s.io/kubernetes/pkg/scheduler/util/assumecache"
)

// PVAssumeCache is a AssumeCache for PersistentVolume objects
type PVAssumeCache struct {
	*assumecache.AssumeCache
	logger klog.Logger
}

func pvStorageClassIndexFunc(obj interface{}) ([]string, error) {
	if pv, ok := obj.(*v1.PersistentVolume); ok {
		return []string{storagehelpers.GetPersistentVolumeClass(pv)}, nil
	}