Transform binding to work

pkg/controllers/binding/binding_controller.go

@@ -1,13 +1,19 @@
 package binding
 
 import (
+	"context"
 	"fmt"
 	"time"
 
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/dynamic"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/scheme"
 	typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
@@ -17,6 +23,7 @@ import (
 	"k8s.io/client-go/util/workqueue"
 	"k8s.io/klog/v2"
 
+	"github.com/huawei-cloudnative/karmada/pkg/apis/propagationstrategy/v1alpha1"
 	"github.com/huawei-cloudnative/karmada/pkg/controllers/util"
 	clientset "github.com/huawei-cloudnative/karmada/pkg/generated/clientset/versioned"
 	karmadaScheme "github.com/huawei-cloudnative/karmada/pkg/generated/clientset/versioned/scheme"
@@ -24,7 +31,27 @@ import (
 	listers "github.com/huawei-cloudnative/karmada/pkg/generated/listers/propagationstrategy/v1alpha1"
 )
 
-const controllerAgentName = "binding-controller"
+const (
+	controllerAgentName = "binding-controller"
+)
+
+// todo: this can get by kubectl api-resources
+var resourceKindMap = map[string]string{
+	"ConfigMap":             "configmaps",
+	"Namespace":             "namespaces",
+	"PersistentVolumeClaim": "persistentvolumeclaims",
+	"PersistentVolume":      "persistentvolumes",
+	"Pod":                   "pods",
+	"Secret":                "secrets",
+	"Service":               "services",
+	"Deployment":            "deployments",
+	"DaemonSet":             "daemonsets",
+	"StatefulSet":           "statefulsets",
+	"ReplicaSet":            "replicasets",
+	"CronJob":               "cronjobs",
+	"Job":                   "jobs",
+	"Ingress":               "ingresses",
+}
 
 // Controller is the controller implementation for binding resources
 type Controller struct {
@@ -32,8 +59,8 @@ type Controller struct {
 	karmadaClientSet clientset.Interface
 
 	// kubeClientSet is a standard kubernetes clientset.
-	kubeClientSet kubernetes.Interface
+	kubeClientSet            kubernetes.Interface
-
+	dynamicClientSet         dynamic.Interface
 	karmadaInformerFactory   informers.SharedInformerFactory
 	propagationBindingLister listers.PropagationBindingLister
 	propagationBindingSynced cache.InformerSynced
@@ -73,6 +100,10 @@ func newPropagationBindingController(config *util.ControllerConfig) (*Controller
 	kubeClientSet := kubernetes.NewForConfigOrDie(headClusterConfig)
 
 	karmadaClientSet := clientset.NewForConfigOrDie(headClusterConfig)
+	dynamicClientSet, err := dynamic.NewForConfig(headClusterConfig)
+	if err != nil {
+		return nil, err
+	}
 	karmadaInformerFactory := informers.NewSharedInformerFactory(karmadaClientSet, 0)
 	propagationBindingInformer := karmadaInformerFactory.Propagationstrategy().V1alpha1().PropagationBindings()
 	// Add karmada types to the default Kubernetes Scheme so Events can be logged for karmada types.
@@ -86,6 +117,7 @@ func newPropagationBindingController(config *util.ControllerConfig) (*Controller
 	controller := &Controller{
 		karmadaClientSet:         karmadaClientSet,
 		kubeClientSet:            kubeClientSet,
+		dynamicClientSet:         dynamicClientSet,
 		karmadaInformerFactory:   karmadaInformerFactory,
 		propagationBindingLister: propagationBindingInformer.Lister(),
 		propagationBindingSynced: propagationBindingInformer.Informer().HasSynced,
@@ -226,8 +258,96 @@ func (c *Controller) syncHandler(key string) error {
 
 		return err
 	}
-	klog.Infof("propagationBinding: %+v", propagationBinding)
+	klog.V(2).Infof("Sync propagationBinding: %s/%s", propagationBinding.Namespace, propagationBinding.Name)
-	klog.Infof("Sync propagationBinding: %s/%s", propagationBinding.Namespace, propagationBinding.Name)
+	err = c.transformBindingToWorks(propagationBinding)
+	if err != nil {
+		klog.Errorf("failed to transform propagationBinding %s/%s to propagationWorks. error: %+v",
+			propagationBinding.Namespace, propagationBinding.Name, err)
+		return err
+	}
+	return nil
+}
+
+// get resource yaml from kubernetes
+func (c *Controller) getResourceStructure(propagationBinding *v1alpha1.PropagationBinding) (*unstructured.Unstructured, error) {
+	groupVersion, err := schema.ParseGroupVersion(propagationBinding.Spec.Resource.APIVersion)
+	if err != nil {
+		return nil, fmt.Errorf("can't get parse groupVersion[namespace: %s name: %s kind: %s]. error: %v", propagationBinding.Spec.Resource.Namespace,
+			propagationBinding.Spec.Resource.Name, resourceKindMap[propagationBinding.Spec.Resource.Kind], err)
+	}
+	dynamicResource := schema.GroupVersionResource{Group: groupVersion.Group, Version: groupVersion.Version, Resource: resourceKindMap[propagationBinding.Spec.Resource.Kind]}
+	result, err := c.dynamicClientSet.Resource(dynamicResource).Namespace(propagationBinding.Spec.Resource.Namespace).Get(context.TODO(), propagationBinding.Spec.Resource.Name, metav1.GetOptions{})
+	if err != nil {
+		return nil, fmt.Errorf("can't get resource[namespace: %s name: %s kind: %s]. error: %v", propagationBinding.Spec.Resource.Namespace,
+			propagationBinding.Spec.Resource.Name, resourceKindMap[propagationBinding.Spec.Resource.Kind], err)
+	}
+	return result, nil
+}
+
+// get clusterName list from bind clusters field
+func (c *Controller) getBindingClusterNames(propagationBinding *v1alpha1.PropagationBinding) []string {
+	var clusterNames []string
+	for _, targetCluster := range propagationBinding.Spec.Clusters {
+		clusterNames = append(clusterNames, targetCluster.Name)
+	}
+	return clusterNames
+}
+
+// delete irrelevant field from workload. such as uid, timestamp, status
+func (c *Controller) removeIrrelevantField(workload *unstructured.Unstructured) {
+	unstructured.RemoveNestedField(workload.Object, "metadata", "creationTimestamp")
+	unstructured.RemoveNestedField(workload.Object, "metadata", "generation")
+	unstructured.RemoveNestedField(workload.Object, "metadata", "resourceVersion")
+	unstructured.RemoveNestedField(workload.Object, "metadata", "selfLink")
+	unstructured.RemoveNestedField(workload.Object, "metadata", "uid")
+	unstructured.RemoveNestedField(workload.Object, "status")
+}
+
+// transform propagationBinding resource to propagationWork resources
+func (c *Controller) transformBindingToWorks(propagationBinding *v1alpha1.PropagationBinding) error {
+	workload, err := c.getResourceStructure(propagationBinding)
+	if err != nil {
+		klog.Errorf("failed to get resource. error: %v", err)
+		return err
+	}
+
+	clusterNames := c.getBindingClusterNames(propagationBinding)
+
+	for _, clusterNameMirrorNamespace := range clusterNames {
+		c.removeIrrelevantField(workload)
+		formatWorkload, err := workload.MarshalJSON()
+		if err != nil {
+			klog.Errorf("failed to marshal workload. error: %v", err)
+			return err
+		}
+
+		rawExtension := runtime.RawExtension{
+			Raw: formatWorkload,
+		}
+
+		propagationWork := v1alpha1.PropagationWork{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      propagationBinding.Name,
+				Namespace: clusterNameMirrorNamespace,
+			},
+			Spec: v1alpha1.PropagationWorkSpec{
+				Workload: v1alpha1.WorkloadTemplate{
+					Manifests: []v1alpha1.Manifest{
+						{
+							RawExtension: rawExtension,
+						},
+					},
+				},
+			},
+		}
+		// todo. if works exists, how to do?
+		result, err := c.karmadaClientSet.PropagationstrategyV1alpha1().PropagationWorks(clusterNameMirrorNamespace).Create(context.TODO(), &propagationWork, metav1.CreateOptions{})
+		if err != nil {
+			klog.Errorf("failed to create propagationWork %s/%s. error: %v", propagationWork.Namespace, propagationWork.Name, err)
+			return err
+		}
+		klog.V(2).Infof("create propagationWork %s/%s success. result is %+v", propagationWork.Namespace, propagationWork.Name, result)
+	}
 
 	return nil
 }

vendor/k8s.io/client-go/dynamic/interface.go

@@ -0,0 +1,61 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package dynamic
+
+import (
+	"context"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/watch"
+)
+
+type Interface interface {
+	Resource(resource schema.GroupVersionResource) NamespaceableResourceInterface
+}
+
+type ResourceInterface interface {
+	Create(ctx context.Context, obj *unstructured.Unstructured, options metav1.CreateOptions, subresources ...string) (*unstructured.Unstructured, error)
+	Update(ctx context.Context, obj *unstructured.Unstructured, options metav1.UpdateOptions, subresources ...string) (*unstructured.Unstructured, error)
+	UpdateStatus(ctx context.Context, obj *unstructured.Unstructured, options metav1.UpdateOptions) (*unstructured.Unstructured, error)
+	Delete(ctx context.Context, name string, options metav1.DeleteOptions, subresources ...string) error
+	DeleteCollection(ctx context.Context, options metav1.DeleteOptions, listOptions metav1.ListOptions) error
+	Get(ctx context.Context, name string, options metav1.GetOptions, subresources ...string) (*unstructured.Unstructured, error)
+	List(ctx context.Context, opts metav1.ListOptions) (*unstructured.UnstructuredList, error)
+	Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error)
+	Patch(ctx context.Context, name string, pt types.PatchType, data []byte, options metav1.PatchOptions, subresources ...string) (*unstructured.Unstructured, error)
+}
+
+type NamespaceableResourceInterface interface {
+	Namespace(string) ResourceInterface
+	ResourceInterface
+}
+
+// APIPathResolverFunc knows how to convert a groupVersion to its API path. The Kind field is optional.
+// TODO find a better place to move this for existing callers
+type APIPathResolverFunc func(kind schema.GroupVersionKind) string
+
+// LegacyAPIPathResolverFunc can resolve paths properly with the legacy API.
+// TODO find a better place to move this for existing callers
+func LegacyAPIPathResolverFunc(kind schema.GroupVersionKind) string {
+	if len(kind.Group) == 0 {
+		return "/api"
+	}
+	return "/apis"
+}

vendor/k8s.io/client-go/dynamic/scheme.go

@@ -0,0 +1,108 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package dynamic
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/apimachinery/pkg/runtime/serializer/json"
+)
+
+var watchScheme = runtime.NewScheme()
+var basicScheme = runtime.NewScheme()
+var deleteScheme = runtime.NewScheme()
+var parameterScheme = runtime.NewScheme()
+var deleteOptionsCodec = serializer.NewCodecFactory(deleteScheme)
+var dynamicParameterCodec = runtime.NewParameterCodec(parameterScheme)
+
+var versionV1 = schema.GroupVersion{Version: "v1"}
+
+func init() {
+	metav1.AddToGroupVersion(watchScheme, versionV1)
+	metav1.AddToGroupVersion(basicScheme, versionV1)
+	metav1.AddToGroupVersion(parameterScheme, versionV1)
+	metav1.AddToGroupVersion(deleteScheme, versionV1)
+}
+
+// basicNegotiatedSerializer is used to handle discovery and error handling serialization
+type basicNegotiatedSerializer struct{}
+
+func (s basicNegotiatedSerializer) SupportedMediaTypes() []runtime.SerializerInfo {
+	return []runtime.SerializerInfo{
+		{
+			MediaType:        "application/json",
+			MediaTypeType:    "application",
+			MediaTypeSubType: "json",
+			EncodesAsText:    true,
+			Serializer:       json.NewSerializer(json.DefaultMetaFactory, unstructuredCreater{basicScheme}, unstructuredTyper{basicScheme}, false),
+			PrettySerializer: json.NewSerializer(json.DefaultMetaFactory, unstructuredCreater{basicScheme}, unstructuredTyper{basicScheme}, true),
+			StreamSerializer: &runtime.StreamSerializerInfo{
+				EncodesAsText: true,
+				Serializer:    json.NewSerializer(json.DefaultMetaFactory, basicScheme, basicScheme, false),
+				Framer:        json.Framer,
+			},
+		},
+	}
+}
+
+func (s basicNegotiatedSerializer) EncoderForVersion(encoder runtime.Encoder, gv runtime.GroupVersioner) runtime.Encoder {
+	return runtime.WithVersionEncoder{
+		Version:     gv,
+		Encoder:     encoder,
+		ObjectTyper: unstructuredTyper{basicScheme},
+	}
+}
+
+func (s basicNegotiatedSerializer) DecoderToVersion(decoder runtime.Decoder, gv runtime.GroupVersioner) runtime.Decoder {
+	return decoder
+}
+
+type unstructuredCreater struct {
+	nested runtime.ObjectCreater
+}
+
+func (c unstructuredCreater) New(kind schema.GroupVersionKind) (runtime.Object, error) {
+	out, err := c.nested.New(kind)
+	if err == nil {
+		return out, nil
+	}
+	out = &unstructured.Unstructured{}
+	out.GetObjectKind().SetGroupVersionKind(kind)
+	return out, nil
+}
+
+type unstructuredTyper struct {
+	nested runtime.ObjectTyper
+}
+
+func (t unstructuredTyper) ObjectKinds(obj runtime.Object) ([]schema.GroupVersionKind, bool, error) {
+	kinds, unversioned, err := t.nested.ObjectKinds(obj)
+	if err == nil {
+		return kinds, unversioned, nil
+	}
+	if _, ok := obj.(runtime.Unstructured); ok && !obj.GetObjectKind().GroupVersionKind().Empty() {
+		return []schema.GroupVersionKind{obj.GetObjectKind().GroupVersionKind()}, false, nil
+	}
+	return nil, false, err
+}
+
+func (t unstructuredTyper) Recognizes(gvk schema.GroupVersionKind) bool {
+	return true
+}

vendor/k8s.io/client-go/dynamic/simple.go

@@ -0,0 +1,327 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package dynamic
+
+import (
+	"context"
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/rest"
+)
+
+type dynamicClient struct {
+	client *rest.RESTClient
+}
+
+var _ Interface = &dynamicClient{}
+
+// ConfigFor returns a copy of the provided config with the
+// appropriate dynamic client defaults set.
+func ConfigFor(inConfig *rest.Config) *rest.Config {
+	config := rest.CopyConfig(inConfig)
+	config.AcceptContentTypes = "application/json"
+	config.ContentType = "application/json"
+	config.NegotiatedSerializer = basicNegotiatedSerializer{} // this gets used for discovery and error handling types
+	if config.UserAgent == "" {
+		config.UserAgent = rest.DefaultKubernetesUserAgent()
+	}
+	return config
+}
+
+// NewForConfigOrDie creates a new Interface for the given config and
+// panics if there is an error in the config.
+func NewForConfigOrDie(c *rest.Config) Interface {
+	ret, err := NewForConfig(c)
+	if err != nil {
+		panic(err)
+	}
+	return ret
+}
+
+// NewForConfig creates a new dynamic client or returns an error.
+func NewForConfig(inConfig *rest.Config) (Interface, error) {
+	config := ConfigFor(inConfig)
+	// for serializing the options
+	config.GroupVersion = &schema.GroupVersion{}
+	config.APIPath = "/if-you-see-this-search-for-the-break"
+
+	restClient, err := rest.RESTClientFor(config)
+	if err != nil {
+		return nil, err
+	}
+
+	return &dynamicClient{client: restClient}, nil
+}
+
+type dynamicResourceClient struct {
+	client    *dynamicClient
+	namespace string
+	resource  schema.GroupVersionResource
+}
+
+func (c *dynamicClient) Resource(resource schema.GroupVersionResource) NamespaceableResourceInterface {
+	return &dynamicResourceClient{client: c, resource: resource}
+}
+
+func (c *dynamicResourceClient) Namespace(ns string) ResourceInterface {
+	ret := *c
+	ret.namespace = ns
+	return &ret
+}
+
+func (c *dynamicResourceClient) Create(ctx context.Context, obj *unstructured.Unstructured, opts metav1.CreateOptions, subresources ...string) (*unstructured.Unstructured, error) {
+	outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
+	if err != nil {
+		return nil, err
+	}
+	name := ""
+	if len(subresources) > 0 {
+		accessor, err := meta.Accessor(obj)
+		if err != nil {
+			return nil, err
+		}
+		name = accessor.GetName()
+		if len(name) == 0 {
+			return nil, fmt.Errorf("name is required")
+		}
+	}
+
+	result := c.client.client.
+		Post().
+		AbsPath(append(c.makeURLSegments(name), subresources...)...).
+		Body(outBytes).
+		SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
+		Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	return uncastObj.(*unstructured.Unstructured), nil
+}
+
+func (c *dynamicResourceClient) Update(ctx context.Context, obj *unstructured.Unstructured, opts metav1.UpdateOptions, subresources ...string) (*unstructured.Unstructured, error) {
+	accessor, err := meta.Accessor(obj)
+	if err != nil {
+		return nil, err
+	}
+	name := accessor.GetName()
+	if len(name) == 0 {
+		return nil, fmt.Errorf("name is required")
+	}
+	outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
+	if err != nil {
+		return nil, err
+	}
+
+	result := c.client.client.
+		Put().
+		AbsPath(append(c.makeURLSegments(name), subresources...)...).
+		Body(outBytes).
+		SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
+		Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	return uncastObj.(*unstructured.Unstructured), nil
+}
+
+func (c *dynamicResourceClient) UpdateStatus(ctx context.Context, obj *unstructured.Unstructured, opts metav1.UpdateOptions) (*unstructured.Unstructured, error) {
+	accessor, err := meta.Accessor(obj)
+	if err != nil {
+		return nil, err
+	}
+	name := accessor.GetName()
+	if len(name) == 0 {
+		return nil, fmt.Errorf("name is required")
+	}
+
+	outBytes, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
+	if err != nil {
+		return nil, err
+	}
+
+	result := c.client.client.
+		Put().
+		AbsPath(append(c.makeURLSegments(name), "status")...).
+		Body(outBytes).
+		SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
+		Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	return uncastObj.(*unstructured.Unstructured), nil
+}
+
+func (c *dynamicResourceClient) Delete(ctx context.Context, name string, opts metav1.DeleteOptions, subresources ...string) error {
+	if len(name) == 0 {
+		return fmt.Errorf("name is required")
+	}
+	deleteOptionsByte, err := runtime.Encode(deleteOptionsCodec.LegacyCodec(schema.GroupVersion{Version: "v1"}), &opts)
+	if err != nil {
+		return err
+	}
+
+	result := c.client.client.
+		Delete().
+		AbsPath(append(c.makeURLSegments(name), subresources...)...).
+		Body(deleteOptionsByte).
+		Do(ctx)
+	return result.Error()
+}
+
+func (c *dynamicResourceClient) DeleteCollection(ctx context.Context, opts metav1.DeleteOptions, listOptions metav1.ListOptions) error {
+	deleteOptionsByte, err := runtime.Encode(deleteOptionsCodec.LegacyCodec(schema.GroupVersion{Version: "v1"}), &opts)
+	if err != nil {
+		return err
+	}
+
+	result := c.client.client.
+		Delete().
+		AbsPath(c.makeURLSegments("")...).
+		Body(deleteOptionsByte).
+		SpecificallyVersionedParams(&listOptions, dynamicParameterCodec, versionV1).
+		Do(ctx)
+	return result.Error()
+}
+
+func (c *dynamicResourceClient) Get(ctx context.Context, name string, opts metav1.GetOptions, subresources ...string) (*unstructured.Unstructured, error) {
+	if len(name) == 0 {
+		return nil, fmt.Errorf("name is required")
+	}
+	result := c.client.client.Get().AbsPath(append(c.makeURLSegments(name), subresources...)...).SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	return uncastObj.(*unstructured.Unstructured), nil
+}
+
+func (c *dynamicResourceClient) List(ctx context.Context, opts metav1.ListOptions) (*unstructured.UnstructuredList, error) {
+	result := c.client.client.Get().AbsPath(c.makeURLSegments("")...).SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	if list, ok := uncastObj.(*unstructured.UnstructuredList); ok {
+		return list, nil
+	}
+
+	list, err := uncastObj.(*unstructured.Unstructured).ToList()
+	if err != nil {
+		return nil, err
+	}
+	return list, nil
+}
+
+func (c *dynamicResourceClient) Watch(ctx context.Context, opts metav1.ListOptions) (watch.Interface, error) {
+	opts.Watch = true
+	return c.client.client.Get().AbsPath(c.makeURLSegments("")...).
+		SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
+		Watch(ctx)
+}
+
+func (c *dynamicResourceClient) Patch(ctx context.Context, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (*unstructured.Unstructured, error) {
+	if len(name) == 0 {
+		return nil, fmt.Errorf("name is required")
+	}
+	result := c.client.client.
+		Patch(pt).
+		AbsPath(append(c.makeURLSegments(name), subresources...)...).
+		Body(data).
+		SpecificallyVersionedParams(&opts, dynamicParameterCodec, versionV1).
+		Do(ctx)
+	if err := result.Error(); err != nil {
+		return nil, err
+	}
+	retBytes, err := result.Raw()
+	if err != nil {
+		return nil, err
+	}
+	uncastObj, err := runtime.Decode(unstructured.UnstructuredJSONScheme, retBytes)
+	if err != nil {
+		return nil, err
+	}
+	return uncastObj.(*unstructured.Unstructured), nil
+}
+
+func (c *dynamicResourceClient) makeURLSegments(name string) []string {
+	url := []string{}
+	if len(c.resource.Group) == 0 {
+		url = append(url, "api")
+	} else {
+		url = append(url, "apis", c.resource.Group)
+	}
+	url = append(url, c.resource.Version)
+
+	if len(c.namespace) > 0 {
+		url = append(url, "namespaces", c.namespace)
+	}
+	url = append(url, c.resource.Resource)
+
+	if len(name) > 0 {
+		url = append(url, name)
+	}
+
+	return url
+}

vendor/modules.txt

@@ -476,6 +476,7 @@ k8s.io/apiserver/plugin/pkg/authorizer/webhook
 ## explicit
 k8s.io/client-go/discovery
 k8s.io/client-go/discovery/fake
+k8s.io/client-go/dynamic
 k8s.io/client-go/informers
 k8s.io/client-go/informers/admissionregistration
 k8s.io/client-go/informers/admissionregistration/v1