remove Initializer use from pv label controller

pkg/controller/cloud/pvlcontroller.go

@@ -44,8 +44,6 @@ import (
 	volumeutil "k8s.io/kubernetes/pkg/volume/util"
 )
 
-const initializerName = "pvlabel.kubernetes.io"
-
 // PersistentVolumeLabelController handles adding labels to persistent volumes when they are created
 type PersistentVolumeLabelController struct {
 	cloud         cloudprovider.Interface
@@ -74,11 +72,9 @@ func NewPersistentVolumeLabelController(
 	pvlc.pvlIndexer, pvlc.pvlController = cache.NewIndexerInformer(
 		&cache.ListWatch{
 			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
-				options.IncludeUninitialized = true
 				return kubeClient.CoreV1().PersistentVolumes().List(options)
 			},
 			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
-				options.IncludeUninitialized = true
 				return kubeClient.CoreV1().PersistentVolumes().Watch(options)
 			},
 		},
@@ -184,7 +180,7 @@ func (pvlc *PersistentVolumeLabelController) addLabelsAndAffinity(key string) er
 func (pvlc *PersistentVolumeLabelController) addLabelsAndAffinityToVolume(vol *v1.PersistentVolume) error {
 	var volumeLabels map[string]string
 	// Only add labels if the next pending initializer.
-	if needsInitialization(vol.Initializers, initializerName) {
+	if needsInitialization(vol) {
 		if labeler, ok := (pvlc.cloud).(cloudprovider.PVLabeler); ok {
 			labels, err := labeler.GetLabelsForVolume(context.TODO(), vol)
 			if err != nil {
@@ -249,8 +245,8 @@ func (pvlc *PersistentVolumeLabelController) createPatch(vol *v1.PersistentVolum
 			}
 		}
 	}
-	newVolume.Initializers = removeInitializer(newVolume.Initializers, initializerName)
-	klog.V(4).Infof("removed initializer on PersistentVolume %s", newVolume.Name)
+	markInitialized(newVolume)
+	klog.V(4).Infof("marked PersistentVolume %s initialized", newVolume.Name)
 
 	oldData, err := json.Marshal(vol)
 	if err != nil {
@@ -286,38 +282,13 @@ func (pvlc *PersistentVolumeLabelController) updateVolume(vol *v1.PersistentVolu
 	return nil
 }
 
-func removeInitializer(initializers *metav1.Initializers, name string) *metav1.Initializers {
-	if initializers == nil {
-		return nil
-	}
-
-	var updated []metav1.Initializer
-	for _, pending := range initializers.Pending {
-		if pending.Name != name {
-			updated = append(updated, pending)
-		}
-	}
-	if len(updated) == len(initializers.Pending) {
-		return initializers
-	}
-	if len(updated) == 0 {
-		return nil
-	}
-
-	return &metav1.Initializers{Pending: updated}
+func markInitialized(vol *v1.PersistentVolume) {
+	// TODO: mark initialized using a different field, since initializers are not being promoted past alpha, or convert to an admission plugin
 }
 
 // needsInitialization checks whether or not the PVL is the next pending initializer.
-func needsInitialization(initializers *metav1.Initializers, name string) bool {
-	if initializers == nil {
-		return false
-	}
-
-	if len(initializers.Pending) == 0 {
-		return false
-	}
-
-	// There is at least one initializer still pending so check to
-	// see if the PVL is the next in line.
-	return initializers.Pending[0].Name == name
+func needsInitialization(vol *v1.PersistentVolume) bool {
+	// TODO: determine whether initialization is required based on a different attribute,
+	// since initializers are not being promoted past alpha, or convert to an admission plugin
+	return false
 }

pkg/controller/cloud/pvlcontroller_test.go

@@ -129,13 +129,6 @@ func TestCreatePatch(t *testing.T) {
 	ignoredPV := v1.PersistentVolume{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "noncloud",
-			Initializers: &metav1.Initializers{
-				Pending: []metav1.Initializer{
-					{
-						Name: initializerName,
-					},
-				},
-			},
 		},
 		Spec: v1.PersistentVolumeSpec{
 			PersistentVolumeSource: v1.PersistentVolumeSource{
@@ -148,13 +141,6 @@ func TestCreatePatch(t *testing.T) {
 	awsPV := v1.PersistentVolume{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "awsPV",
-			Initializers: &metav1.Initializers{
-				Pending: []metav1.Initializer{
-					{
-						Name: initializerName,
-					},
-				},
-			},
 		},
 		Spec: v1.PersistentVolumeSpec{
 			PersistentVolumeSource: v1.PersistentVolumeSource{
@@ -217,13 +203,6 @@ func TestCreatePatch(t *testing.T) {
 	awsPVWithAffinity := v1.PersistentVolume{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: "awsPV",
-			Initializers: &metav1.Initializers{
-				Pending: []metav1.Initializer{
-					{
-						Name: initializerName,
-					},
-				},
-			},
 		},
 		Spec: v1.PersistentVolumeSpec{
 			PersistentVolumeSource: v1.PersistentVolumeSource{
@@ -458,9 +437,12 @@ func TestCreatePatch(t *testing.T) {
 		}
 		obj := &v1.PersistentVolume{}
 		json.Unmarshal(patch, obj)
-		if obj.ObjectMeta.Initializers != nil {
-			t.Errorf("%s: initializer wasn't removed: %v", d, obj.ObjectMeta.Initializers)
-		}
+
+		// TODO: check if object was marked as initialized
+		// if ... object was not marked as initialized ... {
+		// 	t.Errorf("%s: wasn't marked as initialized: %#v", d, obj)
+		// }
+
 		if tc.labels == nil {
 			continue
 		}
@@ -491,29 +473,24 @@ func TestAddLabelsToVolume(t *testing.T) {
 
 	testCases := map[string]struct {
 		vol                       v1.PersistentVolume
-		initializers              *metav1.Initializers
 		shouldLabelAndSetAffinity bool
 	}{
 		"PV without initializer": {
 			vol:                       pv,
-			initializers:              nil,
-			shouldLabelAndSetAffinity: false,
-		},
-		"PV with initializer to remove": {
-			vol:                       pv,
-			initializers:              &metav1.Initializers{Pending: []metav1.Initializer{{Name: initializerName}}},
-			shouldLabelAndSetAffinity: true,
-		},
-		"PV with other initializers only": {
-			vol:                       pv,
-			initializers:              &metav1.Initializers{Pending: []metav1.Initializer{{Name: "OtherInit"}}},
-			shouldLabelAndSetAffinity: false,
-		},
-		"PV with other initializers first": {
-			vol:                       pv,
-			initializers:              &metav1.Initializers{Pending: []metav1.Initializer{{Name: "OtherInit"}, {Name: initializerName}}},
 			shouldLabelAndSetAffinity: false,
 		},
+		// "PV with initializer to remove": {
+		// 	vol:                       pv,
+		// 	shouldLabelAndSetAffinity: true,
+		// },
+		// "PV with other initializers only": {
+		// 	vol:                       pv,
+		// 	shouldLabelAndSetAffinity: false,
+		// },
+		// "PV with other initializers first": {
+		// 	vol:                       pv,
+		// 	shouldLabelAndSetAffinity: false,
+		// },
 	}
 
 	for d, tc := range testCases {
@@ -550,7 +527,6 @@ func TestAddLabelsToVolume(t *testing.T) {
 			VolumeLabelMap: map[string]map[string]string{"awsPV": {"a": "1"}},
 		}
 		pvlController := &PersistentVolumeLabelController{kubeClient: client, cloud: fakeCloud}
-		tc.vol.ObjectMeta.Initializers = tc.initializers
 		pvlController.addLabelsAndAffinityToVolume(&tc.vol)
 
 		select {