var _ rest.RESTUpdateStrategy = Strategy

func (strategy) NamespaceScoped() bool {
	return true
}

func (strategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
	configMap := obj.(*api.ConfigMap)
	dropDisabledFields(configMap, nil)
}

func (strategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
	cfg := obj.(*api.ConfigMap)

	return validation.ValidateConfigMap(cfg)
}

var _ = rest.RESTUpdateStrategy(Strategy)

func (strategy) NamespaceScoped() bool {
	return true
}

func (strategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
	secret := obj.(*api.Secret)
	dropDisabledFields(secret, nil)
}

func (strategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
	return validation.ValidateSecret(obj.(*api.Secret))
}

	}
	return false
}

// dropDisabledFields removes disabled fields from the pod disruption budget spec.
// This should be called from PrepareForCreate/PrepareForUpdate for all resources containing a pod disruption budget spec.
func dropDisabledFields(pdbSpec, oldPDBSpec *policy.PodDisruptionBudgetSpec) {

	return generic.ObjectMetaFieldsSet(&obj.ObjectMeta, true)
}

// dropDisabledFields drops disabled fields that are not used if their associated feature gates
// are not enabled.
func dropDisabledFields(newCRD *apiextensions.CustomResourceDefinition, oldCRD *apiextensions.CustomResourceDefinition) {

	node := obj.(*api.Node)
	dropDisabledFields(node, nil)
}

// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
func (nodeStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
	newNode := obj.(*api.Node)
	oldNode := old.(*api.Node)
	newNode.Status = oldNode.Status

	dropDisabledFields(newNode, oldNode)
}

	deprecatedStorageClassAnnotationsMsg        = `deprecated since v1.8; use "storageClassName" attribute instead`
)

// DropDisabledFields removes disabled fields from the pvc spec.
// This should be called from PrepareForCreate/PrepareForUpdate for all resources containing a pvc spec.
func DropDisabledFields(pvcSpec, oldPVCSpec *core.PersistentVolumeClaimSpec) {
	// Drop the contents of the volumeAttributesClassName if the VolumeAttributesClass

func (persistentvolumeclaimStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
	pvc := obj.(*api.PersistentVolumeClaim)
	pvc.Status = api.PersistentVolumeClaimStatus{}
	pvcutil.DropDisabledFields(&pvc.Spec, nil)

	// For data sources, we need to do 2 things to implement KEP 1495

	// First drop invalid values from spec.dataSource (anything other than PVC or
	// VolumeSnapshot) if certain conditions are met.

					var oldPodSpec *api.PodSpec
					if oldPod != nil {
						oldPodSpec = &oldPod.Spec
					}
					dropDisabledFields(&newPod.Spec, nil, oldPodSpec, nil)

					// old pod should never be changed
					if !reflect.DeepEqual(oldPod, oldPodInfo.pod()) {
						t.Errorf("old pod changed: %v", cmp.Diff(oldPod, oldPodInfo.pod()))
					}

				if !reflect.DeepEqual(newpvc, newpvcInfo.pvc()) {
					t.Errorf("new pvc changed: %v", cmp.Diff(newpvc, newpvcInfo.pvc()))
				}
			})
		}
	}
}

// TestPVCDataSourceSpecFilter checks to ensure the DropDisabledFields function behaves correctly for PVCDataSource featuregate
func TestPVCDataSourceSpecFilter(t *testing.T) {
	apiGroup := ""
	validSpec := core.PersistentVolumeClaimSpec{
		DataSource: &core.TypedLocalObjectReference{

			node:        makeNode(nil, true, true),
			oldNode:     makeNode(nil, false, true),
			compareNode: makeNode(nil, false, true),
		},
	}

	for _, tc := range testCases {
		func() {
			dropDisabledFields(tc.node, tc.oldNode)

			old := tc.oldNode.DeepCopy()
			// old node  should never be changed
			if !reflect.DeepEqual(tc.oldNode, old) {
				t.Errorf("%v: old node changed: %v", tc.name, cmp.Diff(tc.oldNode, old))