Remove use of CustomResourceSubresources feature gate, CRD field clearing

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/conversion/BUILD

@@ -15,7 +15,6 @@ go_library(
         "//staging/src/k8s.io/api/autoscaling/v1:go_default_library",
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1:go_default_library",
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1:go_default_library",
-        "//staging/src/k8s.io/apiextensions-apiserver/pkg/features:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/validation:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured:go_default_library",
@@ -25,7 +24,6 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/uuid:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
-        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/util/webhook:go_default_library",
         "//staging/src/k8s.io/client-go/kubernetes/scheme:go_default_library",
         "//staging/src/k8s.io/client-go/rest:go_default_library",

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/conversion/converter.go

@@ -21,11 +21,9 @@ import (
 
 	autoscalingv1 "k8s.io/api/autoscaling/v1"
 	apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
-	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/apiserver/pkg/util/webhook"
 	typedscheme "k8s.io/client-go/kubernetes/scheme"
 )
@@ -78,13 +76,11 @@ func (m *CRConverterFactory) NewConverter(crd *apiextensionsv1.CustomResourceDef
 
 	// Determine whether we should expect to be asked to "convert" autoscaling/v1 Scale types
 	convertScale := false
-	if utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) {
 	for _, version := range crd.Spec.Versions {
 		if version.Subresources != nil && version.Subresources.Scale != nil {
 			convertScale = true
 		}
 	}
-	}
 
 	unsafe = &crConverter{
 		convertScale:  convertScale,

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/customresource_handler.go

@@ -44,7 +44,6 @@ import (
 	"k8s.io/apiextensions-apiserver/pkg/controller/finalizer"
 	"k8s.io/apiextensions-apiserver/pkg/controller/openapi/builder"
 	"k8s.io/apiextensions-apiserver/pkg/crdserverscheme"
-	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
 	"k8s.io/apiextensions-apiserver/pkg/registry/customresource"
 	"k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor"
 
@@ -701,7 +700,7 @@ func (r *crdHandler) getOrCreateServingInfoFor(uid types.UID, name string) (*crd
 			utilruntime.HandleError(err)
 			return nil, fmt.Errorf("the server could not properly serve the CR subresources")
 		}
-		if utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) && subresources != nil && subresources.Status != nil {
+		if subresources != nil && subresources.Status != nil {
 			equivalentResourceRegistry.RegisterKindFor(resource, "status", kind)
 			statusSpec = &apiextensionsinternal.CustomResourceSubresourceStatus{}
 			if err := apiextensionsv1.Convert_v1_CustomResourceSubresourceStatus_To_apiextensions_CustomResourceSubresourceStatus(subresources.Status, statusSpec, nil); err != nil {
@@ -720,7 +719,7 @@ func (r *crdHandler) getOrCreateServingInfoFor(uid types.UID, name string) (*crd
 		}
 
 		var scaleSpec *apiextensionsinternal.CustomResourceSubresourceScale
-		if utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) && subresources != nil && subresources.Scale != nil {
+		if subresources != nil && subresources.Scale != nil {
 			equivalentResourceRegistry.RegisterKindFor(resource, "scale", autoscalingv1.SchemeGroupVersion.WithKind("Scale"))
 			scaleSpec = &apiextensionsinternal.CustomResourceSubresourceScale{}
 			if err := apiextensionsv1.Convert_v1_CustomResourceSubresourceScale_To_apiextensions_CustomResourceSubresourceScale(subresources.Scale, scaleSpec, nil); err != nil {

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/BUILD

@@ -22,7 +22,6 @@ go_library(
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/schema:go_default_library",
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/schema/objectmeta:go_default_library",
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/validation:go_default_library",
-        "//staging/src/k8s.io/apiextensions-apiserver/pkg/features:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/equality:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/meta:go_default_library",
@@ -40,7 +39,6 @@ go_library(
         "//staging/src/k8s.io/apiserver/pkg/registry/rest:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/storage:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/storage/names:go_default_library",
-        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
         "//vendor/github.com/go-openapi/validate:go_default_library",
     ],
 )

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/strategy.go

@@ -32,12 +32,10 @@ import (
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	apiserverstorage "k8s.io/apiserver/pkg/storage"
 	"k8s.io/apiserver/pkg/storage/names"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
 	structuralschema "k8s.io/apiextensions-apiserver/pkg/apiserver/schema"
 	schemaobjectmeta "k8s.io/apiextensions-apiserver/pkg/apiserver/schema/objectmeta"
-	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
 )
 
 // customResourceStrategy implements behavior for CustomResources.
@@ -75,7 +73,7 @@ func (a customResourceStrategy) NamespaceScoped() bool {
 
 // PrepareForCreate clears the status of a CustomResource before creation.
 func (a customResourceStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
-	if utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) && a.status != nil {
+	if a.status != nil {
 		customResourceObject := obj.(*unstructured.Unstructured)
 		customResource := customResourceObject.UnstructuredContent()
 
@@ -98,7 +96,7 @@ func (a customResourceStrategy) PrepareForUpdate(ctx context.Context, obj, old r
 	oldCustomResource := oldCustomResourceObject.UnstructuredContent()
 
 	// If the /status subresource endpoint is installed, update is not allowed to set status.
-	if utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) && a.status != nil {
+	if a.status != nil {
 		_, ok1 := newCustomResource["status"]
 		_, ok2 := oldCustomResource["status"]
 		switch {

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresourcedefinition/BUILD

@@ -13,7 +13,6 @@ go_library(
     deps = [
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions:go_default_library",
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/validation:go_default_library",
-        "//staging/src/k8s.io/apiextensions-apiserver/pkg/features:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/equality:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/api/errors:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
@@ -30,7 +29,6 @@ go_library(
         "//staging/src/k8s.io/apiserver/pkg/storage/errors:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/storage/names:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/util/dryrun:go_default_library",
-        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
     ],
 )
 
@@ -57,7 +55,6 @@ go_test(
         "//staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/validation:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
-        "//staging/src/k8s.io/apimachinery/pkg/util/diff:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
         "//vendor/k8s.io/utils/pointer:go_default_library",
     ],

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresourcedefinition/strategy.go

@@ -22,7 +22,6 @@ import (
 
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/validation"
-	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
@@ -33,7 +32,6 @@ import (
 	"k8s.io/apiserver/pkg/registry/generic"
 	"k8s.io/apiserver/pkg/storage"
 	"k8s.io/apiserver/pkg/storage/names"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 )
 
 // strategy implements behavior for CustomResources.
@@ -56,8 +54,6 @@ func (strategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
 	crd.Status = apiextensions.CustomResourceDefinitionStatus{}
 	crd.Generation = 1
 
-	dropDisabledFields(&crd.Spec, nil)
-
 	for _, v := range crd.Spec.Versions {
 		if v.Storage {
 			if !apiextensions.IsStoredVersion(crd, v.Name) {
@@ -86,8 +82,6 @@ func (strategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
 		newCRD.Generation = oldCRD.Generation + 1
 	}
 
-	dropDisabledFields(&newCRD.Spec, &oldCRD.Spec)
-
 	for _, v := range newCRD.Spec.Versions {
 		if v.Storage {
 			if !apiextensions.IsStoredVersion(newCRD, v.Name) {
@@ -198,102 +192,3 @@ func MatchCustomResourceDefinition(label labels.Selector, field fields.Selector)
 func CustomResourceDefinitionToSelectableFields(obj *apiextensions.CustomResourceDefinition) fields.Set {
 	return generic.ObjectMetaFieldsSet(&obj.ObjectMeta, true)
 }
-
-func dropDisabledFields(crdSpec, oldCrdSpec *apiextensions.CustomResourceDefinitionSpec) {
-	// if the feature gate is disabled, drop the feature.
-	if !utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceValidation) &&
-		!validationInUse(oldCrdSpec) {
-		crdSpec.Validation = nil
-		for i := range crdSpec.Versions {
-			crdSpec.Versions[i].Schema = nil
-		}
-	}
-	if !utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceSubresources) &&
-		!subresourceInUse(oldCrdSpec) {
-		crdSpec.Subresources = nil
-		for i := range crdSpec.Versions {
-			crdSpec.Versions[i].Subresources = nil
-		}
-	}
-
-	// 1. On CREATE (in which case the old CRD spec is nil), if the CustomResourceWebhookConversion feature gate is off, we auto-clear
-	// the per-version fields. This is to be consistent with the other built-in types, as the
-	// apiserver drops unknown fields.
-	// 2. On UPDATE, if the CustomResourceWebhookConversion feature gate is off, we auto-clear
-	// the per-version fields if the old CRD doesn't use per-version fields already.
-	// This is to be consistent with the other built-in types, as the apiserver drops unknown
-	// fields. If the old CRD already uses per-version fields, the CRD is allowed to continue
-	// use per-version fields.
-	if !utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceWebhookConversion) &&
-		!hasPerVersionField(oldCrdSpec) {
-		for i := range crdSpec.Versions {
-			crdSpec.Versions[i].Schema = nil
-			crdSpec.Versions[i].Subresources = nil
-			crdSpec.Versions[i].AdditionalPrinterColumns = nil
-		}
-	}
-
-	if !utilfeature.DefaultFeatureGate.Enabled(apiextensionsfeatures.CustomResourceWebhookConversion) &&
-		!conversionWebhookInUse(oldCrdSpec) {
-		if crdSpec.Conversion != nil {
-			crdSpec.Conversion.WebhookClientConfig = nil
-		}
-	}
-
-}
-
-func validationInUse(crdSpec *apiextensions.CustomResourceDefinitionSpec) bool {
-	if crdSpec == nil {
-		return false
-	}
-	if crdSpec.Validation != nil {
-		return true
-	}
-
-	for i := range crdSpec.Versions {
-		if crdSpec.Versions[i].Schema != nil {
-			return true
-		}
-	}
-	return false
-}
-
-func subresourceInUse(crdSpec *apiextensions.CustomResourceDefinitionSpec) bool {
-	if crdSpec == nil {
-		return false
-	}
-	if crdSpec.Subresources != nil {
-		return true
-	}
-
-	for i := range crdSpec.Versions {
-		if crdSpec.Versions[i].Subresources != nil {
-			return true
-		}
-	}
-	return false
-}
-
-// hasPerVersionField returns true if a CRD uses per-version schema/subresources/columns fields.
-//func hasPerVersionField(versions []apiextensions.CustomResourceDefinitionVersion) bool {
-func hasPerVersionField(crdSpec *apiextensions.CustomResourceDefinitionSpec) bool {
-	if crdSpec == nil {
-		return false
-	}
-	for _, v := range crdSpec.Versions {
-		if v.Schema != nil || v.Subresources != nil || len(v.AdditionalPrinterColumns) > 0 {
-			return true
-		}
-	}
-	return false
-}
-
-func conversionWebhookInUse(crdSpec *apiextensions.CustomResourceDefinitionSpec) bool {
-	if crdSpec == nil {
-		return false
-	}
-	if crdSpec.Conversion == nil {
-		return false
-	}
-	return crdSpec.Conversion.WebhookClientConfig != nil
-}

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresourcedefinition/strategy_test.go

@@ -17,8 +17,6 @@ limitations under the License.
 package customresourcedefinition
 
 import (
-	"fmt"
-	"reflect"
 	"testing"
 
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions"
@@ -26,333 +24,10 @@ import (
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/validation"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	"k8s.io/utils/pointer"
 )
 
-func TestDropDisableFieldsCustomResourceDefinition(t *testing.T) {
-	t.Log("testing unversioned validation..")
-	crdWithUnversionedValidation := func() *apiextensions.CustomResourceDefinition {
-		// crd with non-versioned validation
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Validation: &apiextensions.CustomResourceValidation{
-					OpenAPIV3Schema: &apiextensions.JSONSchemaProps{},
-				},
-			},
-		}
-	}
-	crdWithoutUnversionedValidation := func() *apiextensions.CustomResourceDefinition {
-		// crd with non-versioned validation
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{},
-		}
-	}
-	crdInfos := []struct {
-		name string
-		crd  func() *apiextensions.CustomResourceDefinition
-	}{
-		{
-			name: "has unversioned validation",
-			crd:  crdWithUnversionedValidation,
-		},
-		{
-			name: "doesn't have unversioned validation",
-			crd:  crdWithoutUnversionedValidation,
-		},
-		{
-			name: "nil",
-			crd:  func() *apiextensions.CustomResourceDefinition { return nil },
-		},
-	}
-	for _, oldCRDInfo := range crdInfos {
-		for _, newCRDInfo := range crdInfos {
-			oldCRD := oldCRDInfo.crd()
-			newCRD := newCRDInfo.crd()
-			if newCRD == nil {
-				continue
-			}
-			t.Run(fmt.Sprintf("old CRD %v, new CRD %v", oldCRDInfo.name, newCRDInfo.name),
-				func(t *testing.T) {
-					var oldCRDSpec *apiextensions.CustomResourceDefinitionSpec
-					if oldCRD != nil {
-						oldCRDSpec = &oldCRD.Spec
-					}
-					dropDisabledFields(&newCRD.Spec, oldCRDSpec)
-					// old CRD should never be changed
-					if !reflect.DeepEqual(oldCRD, oldCRDInfo.crd()) {
-						t.Errorf("old crd changed: %v", diff.ObjectReflectDiff(oldCRD, oldCRDInfo.crd()))
-					}
-					if !reflect.DeepEqual(newCRD, newCRDInfo.crd()) {
-						t.Errorf("new crd changed: %v", diff.ObjectReflectDiff(newCRD, newCRDInfo.crd()))
-					}
-				},
-			)
-		}
-	}
-
-	t.Log("testing unversioned subresources...")
-	crdWithUnversionedSubresources := func() *apiextensions.CustomResourceDefinition {
-		// crd with unversioned subresources
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Subresources: &apiextensions.CustomResourceSubresources{},
-			},
-		}
-	}
-	crdWithoutUnversionedSubresources := func() *apiextensions.CustomResourceDefinition {
-		// crd without unversioned subresources
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{},
-		}
-	}
-	crdInfos = []struct {
-		name string
-		crd  func() *apiextensions.CustomResourceDefinition
-	}{
-		{
-			name: "has unversioned subresources",
-			crd:  crdWithUnversionedSubresources,
-		},
-		{
-			name: "doesn't have unversioned subresources",
-			crd:  crdWithoutUnversionedSubresources,
-		},
-		{
-			name: "nil",
-			crd:  func() *apiextensions.CustomResourceDefinition { return nil },
-		},
-	}
-	for _, oldCRDInfo := range crdInfos {
-		for _, newCRDInfo := range crdInfos {
-			oldCRD := oldCRDInfo.crd()
-			newCRD := newCRDInfo.crd()
-			if newCRD == nil {
-				continue
-			}
-			t.Run(fmt.Sprintf("old CRD %v, new CRD %v", oldCRDInfo.name, newCRDInfo.name),
-				func(t *testing.T) {
-					var oldCRDSpec *apiextensions.CustomResourceDefinitionSpec
-					if oldCRD != nil {
-						oldCRDSpec = &oldCRD.Spec
-					}
-					dropDisabledFields(&newCRD.Spec, oldCRDSpec)
-					// old CRD should never be changed
-					if !reflect.DeepEqual(oldCRD, oldCRDInfo.crd()) {
-						t.Errorf("old crd changed: %v", diff.ObjectReflectDiff(oldCRD, oldCRDInfo.crd()))
-					}
-					if !reflect.DeepEqual(newCRD, newCRDInfo.crd()) {
-						t.Errorf("new crd changed: %v", diff.ObjectReflectDiff(newCRD, newCRDInfo.crd()))
-					}
-				},
-			)
-		}
-	}
-
-	t.Log("testing versioned validation..")
-	crdWithVersionedValidation := func() *apiextensions.CustomResourceDefinition {
-		// crd with versioned validation
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Versions: []apiextensions.CustomResourceDefinitionVersion{
-					{
-						Name: "v1",
-						Schema: &apiextensions.CustomResourceValidation{
-							OpenAPIV3Schema: &apiextensions.JSONSchemaProps{},
-						},
-					},
-				},
-			},
-		}
-	}
-	crdWithoutVersionedValidation := func() *apiextensions.CustomResourceDefinition {
-		// crd with versioned validation
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Versions: []apiextensions.CustomResourceDefinitionVersion{
-					{
-						Name: "v1",
-					},
-				},
-			},
-		}
-	}
-	crdInfos = []struct {
-		name string
-		crd  func() *apiextensions.CustomResourceDefinition
-	}{
-		{
-			name: "has versioned validation",
-			crd:  crdWithVersionedValidation,
-		},
-		{
-			name: "doesn't have versioned validation",
-			crd:  crdWithoutVersionedValidation,
-		},
-		{
-			name: "nil",
-			crd:  func() *apiextensions.CustomResourceDefinition { return nil },
-		},
-	}
-	for _, oldCRDInfo := range crdInfos {
-		for _, newCRDInfo := range crdInfos {
-			oldCRD := oldCRDInfo.crd()
-			newCRD := newCRDInfo.crd()
-			if newCRD == nil {
-				continue
-			}
-			t.Run(fmt.Sprintf("old CRD %v, new CRD %v", oldCRDInfo.name, newCRDInfo.name),
-				func(t *testing.T) {
-					var oldCRDSpec *apiextensions.CustomResourceDefinitionSpec
-					if oldCRD != nil {
-						oldCRDSpec = &oldCRD.Spec
-					}
-					dropDisabledFields(&newCRD.Spec, oldCRDSpec)
-					// old CRD should never be changed
-					if !reflect.DeepEqual(oldCRD, oldCRDInfo.crd()) {
-						t.Errorf("old crd changed: %v", diff.ObjectReflectDiff(oldCRD, oldCRDInfo.crd()))
-					}
-					if !reflect.DeepEqual(newCRD, newCRDInfo.crd()) {
-						t.Errorf("new crd changed: %v", diff.ObjectReflectDiff(newCRD, newCRDInfo.crd()))
-					}
-				},
-			)
-		}
-	}
-
-	t.Log("testing versioned subresources w/ conversion enabled..")
-	crdWithVersionedSubresources := func() *apiextensions.CustomResourceDefinition {
-		// crd with versioned subresources
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Versions: []apiextensions.CustomResourceDefinitionVersion{
-					{
-						Name:         "v1",
-						Subresources: &apiextensions.CustomResourceSubresources{},
-					},
-				},
-			},
-		}
-	}
-	crdWithoutVersionedSubresources := func() *apiextensions.CustomResourceDefinition {
-		// crd without versioned subresources
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Versions: []apiextensions.CustomResourceDefinitionVersion{
-					{
-						Name: "v1",
-					},
-				},
-			},
-		}
-	}
-	crdInfos = []struct {
-		name string
-		crd  func() *apiextensions.CustomResourceDefinition
-	}{
-		{
-			name: "has versioned subresources",
-			crd:  crdWithVersionedSubresources,
-		},
-		{
-			name: "doesn't have versioned subresources",
-			crd:  crdWithoutVersionedSubresources,
-		},
-		{
-			name: "nil",
-			crd:  func() *apiextensions.CustomResourceDefinition { return nil },
-		},
-	}
-	for _, oldCRDInfo := range crdInfos {
-		for _, newCRDInfo := range crdInfos {
-			oldCRD := oldCRDInfo.crd()
-			newCRD := newCRDInfo.crd()
-			if newCRD == nil {
-				continue
-			}
-			t.Run(fmt.Sprintf("old CRD %v, new CRD %v", oldCRDInfo.name, newCRDInfo.name),
-				func(t *testing.T) {
-					var oldCRDSpec *apiextensions.CustomResourceDefinitionSpec
-					if oldCRD != nil {
-						oldCRDSpec = &oldCRD.Spec
-					}
-					dropDisabledFields(&newCRD.Spec, oldCRDSpec)
-					// old CRD should never be changed
-					if !reflect.DeepEqual(oldCRD, oldCRDInfo.crd()) {
-						t.Errorf("old crd changed: %v", diff.ObjectReflectDiff(oldCRD, oldCRDInfo.crd()))
-					}
-					if !reflect.DeepEqual(newCRD, newCRDInfo.crd()) {
-						t.Errorf("new crd changed: %v", diff.ObjectReflectDiff(newCRD, newCRDInfo.crd()))
-					}
-				},
-			)
-		}
-	}
-
-	t.Log("testing conversion webhook..")
-	crdWithUnversionedConversionWebhook := func() *apiextensions.CustomResourceDefinition {
-		// crd with conversion webhook
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Conversion: &apiextensions.CustomResourceConversion{
-					WebhookClientConfig: &apiextensions.WebhookClientConfig{},
-				},
-			},
-		}
-	}
-	crdWithoutUnversionedConversionWebhook := func() *apiextensions.CustomResourceDefinition {
-		// crd with conversion webhook
-		return &apiextensions.CustomResourceDefinition{
-			Spec: apiextensions.CustomResourceDefinitionSpec{
-				Conversion: &apiextensions.CustomResourceConversion{},
-			},
-		}
-	}
-	crdInfos = []struct {
-		name string
-		crd  func() *apiextensions.CustomResourceDefinition
-	}{
-		{
-			name: "has conversion webhook",
-			crd:  crdWithUnversionedConversionWebhook,
-		},
-		{
-			name: "doesn't have conversion webhook",
-			crd:  crdWithoutUnversionedConversionWebhook,
-		},
-		{
-			name: "nil",
-			crd:  func() *apiextensions.CustomResourceDefinition { return nil },
-		},
-	}
-	for _, oldCRDInfo := range crdInfos {
-		for _, newCRDInfo := range crdInfos {
-			oldCRD := oldCRDInfo.crd()
-			newCRD := newCRDInfo.crd()
-			if newCRD == nil {
-				continue
-			}
-			t.Run(fmt.Sprintf("old CRD %v, new CRD %v", oldCRDInfo.name, newCRDInfo.name),
-				func(t *testing.T) {
-					var oldCRDSpec *apiextensions.CustomResourceDefinitionSpec
-					if oldCRD != nil {
-						oldCRDSpec = &oldCRD.Spec
-					}
-					dropDisabledFields(&newCRD.Spec, oldCRDSpec)
-					// old CRD should never be changed
-					if !reflect.DeepEqual(oldCRD, oldCRDInfo.crd()) {
-						t.Errorf("old crd changed: %v", diff.ObjectReflectDiff(oldCRD, oldCRDInfo.crd()))
-					}
-					if !reflect.DeepEqual(newCRD, newCRDInfo.crd()) {
-						t.Errorf("new crd changed: %v", diff.ObjectReflectDiff(newCRD, newCRDInfo.crd()))
-					}
-				},
-			)
-		}
-	}
-}
-
 func strPtr(in string) *string {
 	return &in
 }

vendor/modules.txt

@@ -1182,7 +1182,6 @@ k8s.io/apiextensions-apiserver/pkg/controller/openapi/builder
 k8s.io/apiextensions-apiserver/pkg/controller/openapi/v2
 k8s.io/apiextensions-apiserver/pkg/controller/status
 k8s.io/apiextensions-apiserver/pkg/crdserverscheme
-k8s.io/apiextensions-apiserver/pkg/features
 k8s.io/apiextensions-apiserver/pkg/generated/openapi
 k8s.io/apiextensions-apiserver/pkg/registry/customresource
 k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor