ThirdPartyResource client-go example: added TPR controller example, code cleanup and integration test

Kubernetes-commit: a6c97715ed7e24581dd9a02a256d57e56b70ac44

examples/third-party-resources/BUILD

@@ -6,7 +6,6 @@ load(
     "@io_bazel_rules_go//go:def.bzl",
     "go_binary",
     "go_library",
-    "go_test",
 )
 
 go_binary(
@@ -15,34 +14,18 @@ go_binary(
     tags = ["automanaged"],
 )
 
-go_test(
-    name = "go_default_test",
-    srcs = ["types_test.go"],
-    library = ":go_default_library",
-    tags = ["automanaged"],
-    deps = [
-        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
-    ],
-)
-
 go_library(
     name = "go_default_library",
-    srcs = [
+    srcs = ["main.go"],
-        "main.go",
-        "types.go",
-    ],
     tags = ["automanaged"],
     deps = [
         "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/client-go/examples/third-party-resources/apis/tpr/v1:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/client-go/examples/third-party-resources/client:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",
+        "//vendor/k8s.io/client-go/examples/third-party-resources/controller:go_default_library",
         "//vendor/k8s.io/client-go/kubernetes:go_default_library",
-        "//vendor/k8s.io/client-go/kubernetes/scheme:go_default_library",
         "//vendor/k8s.io/client-go/pkg/api/v1:go_default_library",
-        "//vendor/k8s.io/client-go/pkg/apis/extensions/v1beta1:go_default_library",
         "//vendor/k8s.io/client-go/rest:go_default_library",
         "//vendor/k8s.io/client-go/tools/clientcmd:go_default_library",
     ],

examples/third-party-resources/README.md

@@ -4,6 +4,7 @@ This particular example demonstrates how to perform basic operations such as:
 
 * How to register a new ThirdPartyResource (custom Resource type)
 * How to create/get/list instances of your new Resource type (update/delete/etc work as well but are not demonstrated) 
+* How to setup a controller on Resource handling create/update/delete events
 
 ## Running
 

examples/third-party-resources/apis/tpr/v1/BUILD

@@ -0,0 +1,34 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["types_test.go"],
+    library = ":go_default_library",
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+    ],
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "register.go",
+        "types.go",
+    ],
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+    ],
+)

examples/third-party-resources/apis/tpr/v1/register.go

@@ -0,0 +1,56 @@
+/*
+Copyright 2017 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 v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var (
+	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
+	AddToScheme   = SchemeBuilder.AddToScheme
+)
+
+// GroupName is the group name use in this package
+const GroupName = "tpr.client-go.k8s.io"
+
+// SchemeGroupVersion is group version used to register these objects
+var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: "v1"}
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+func init() {
+	// We only register manually written functions here. The registration of the
+	// generated functions takes place in the generated files. The separation
+	// makes the code compile even when the generated files are missing.
+	SchemeBuilder.Register(addKnownTypes)
+}
+
+// Adds the list of known types to api.Scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&Example{},
+		&ExampleList{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

examples/third-party-resources/apis/tpr/v1/types.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2017 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 v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const ExampleResourcePlural = "examples"
+
+type Example struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata"`
+	Spec              ExampleSpec   `json:"spec"`
+	Status            ExampleStatus `json:"status,omitempty"`
+}
+
+type ExampleSpec struct {
+	Foo string `json:"foo"`
+	Bar bool   `json:"bar"`
+}
+
+type ExampleStatus struct {
+	State   ExampleState `json:"state,omitempty"`
+	Message string       `json:"message,omitempty"`
+}
+
+type ExampleState string
+
+const (
+	ExampleStateCreated   ExampleState = "Created"
+	ExampleStateProcessed ExampleState = "Processed"
+)
+
+type ExampleList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata"`
+	Items           []Example `json:"items"`
+}

examples/third-party-resources/apis/tpr/v1/types_test.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package main
+package v1
 
 import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

examples/third-party-resources/client/BUILD

@@ -0,0 +1,29 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "client.go",
+        "tpr.go",
+    ],
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+        "//vendor/k8s.io/client-go/examples/third-party-resources/apis/tpr/v1:go_default_library",
+        "//vendor/k8s.io/client-go/kubernetes:go_default_library",
+        "//vendor/k8s.io/client-go/pkg/api/v1:go_default_library",
+        "//vendor/k8s.io/client-go/pkg/apis/extensions/v1beta1:go_default_library",
+        "//vendor/k8s.io/client-go/rest:go_default_library",
+    ],
+)

examples/third-party-resources/client/client.go

@@ -0,0 +1,45 @@
+/*
+Copyright 2017 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 client
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/client-go/rest"
+
+	tprv1 "k8s.io/client-go/examples/third-party-resources/apis/tpr/v1"
+)
+
+func NewClient(cfg *rest.Config) (*rest.RESTClient, *runtime.Scheme, error) {
+	scheme := runtime.NewScheme()
+	if err := tprv1.AddToScheme(scheme); err != nil {
+		return nil, nil, err
+	}
+
+	config := *cfg
+	config.GroupVersion = &tprv1.SchemeGroupVersion
+	config.APIPath = "/apis"
+	config.ContentType = runtime.ContentTypeJSON
+	config.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: serializer.NewCodecFactory(scheme)}
+
+	client, err := rest.RESTClientFor(&config)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return client, scheme, nil
+}

examples/third-party-resources/client/tpr.go

@@ -0,0 +1,76 @@
+/*
+Copyright 2017 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 client
+
+import (
+	"time"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	tprv1 "k8s.io/client-go/examples/third-party-resources/apis/tpr/v1"
+	"k8s.io/client-go/kubernetes"
+	apiv1 "k8s.io/client-go/pkg/api/v1"
+	"k8s.io/client-go/pkg/apis/extensions/v1beta1"
+	"k8s.io/client-go/rest"
+	// Uncomment the following line to load the gcp plugin (only required to authenticate against GKE clusters).
+	// _ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
+)
+
+func CreateTPR(clientset kubernetes.Interface) error {
+	tpr := &v1beta1.ThirdPartyResource{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "example." + tprv1.GroupName,
+		},
+		Versions: []v1beta1.APIVersion{
+			{Name: tprv1.SchemeGroupVersion.Version},
+		},
+		Description: "An Example ThirdPartyResource",
+	}
+	_, err := clientset.ExtensionsV1beta1().ThirdPartyResources().Create(tpr)
+	return err
+}
+
+func WaitForExampleResource(exampleClient *rest.RESTClient) error {
+	return wait.Poll(100*time.Millisecond, 60*time.Second, func() (bool, error) {
+		_, err := exampleClient.Get().Namespace(apiv1.NamespaceDefault).Resource(tprv1.ExampleResourcePlural).DoRaw()
+		if err == nil {
+			return true, nil
+		}
+		if apierrors.IsNotFound(err) {
+			return false, nil
+		}
+		return false, err
+	})
+}
+
+func WaitForExampleInstanceProcessed(exampleClient *rest.RESTClient, name string) error {
+	return wait.Poll(100*time.Millisecond, 10*time.Second, func() (bool, error) {
+		var example tprv1.Example
+		err := exampleClient.Get().
+			Resource(tprv1.ExampleResourcePlural).
+			Namespace(apiv1.NamespaceDefault).
+			Name(name).
+			Do().Into(&example)
+
+		if err == nil && example.Status.State == tprv1.ExampleStateProcessed {
+			return true, nil
+		}
+
+		return false, err
+	})
+}

examples/third-party-resources/controller/BUILD

@@ -0,0 +1,22 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["controller.go"],
+    tags = ["automanaged"],
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/fields:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/client-go/examples/third-party-resources/apis/tpr/v1:go_default_library",
+        "//vendor/k8s.io/client-go/pkg/api/v1:go_default_library",
+        "//vendor/k8s.io/client-go/rest:go_default_library",
+        "//vendor/k8s.io/client-go/tools/cache:go_default_library",
+    ],
+)

examples/third-party-resources/controller/controller.go

@@ -0,0 +1,126 @@
+/*
+Copyright 2017 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 controller
+
+import (
+	"context"
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/runtime"
+	apiv1 "k8s.io/client-go/pkg/api/v1"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/cache"
+
+	tprv1 "k8s.io/client-go/examples/third-party-resources/apis/tpr/v1"
+)
+
+// Watcher is an example of watching on resource create/update/delete events
+type ExampleController struct {
+	ExampleClient *rest.RESTClient
+	ExampleScheme *runtime.Scheme
+}
+
+// Run starts an Example resource controller
+func (c *ExampleController) Run(ctx context.Context) error {
+	fmt.Print("Watch Example objects\n")
+
+	// Watch Example objects
+	_, err := c.watchExamples(ctx)
+	if err != nil {
+		fmt.Printf("Failed to register watch for Example resource: %v\n", err)
+		return err
+	}
+
+	<-ctx.Done()
+	return ctx.Err()
+}
+
+func (c *ExampleController) watchExamples(ctx context.Context) (cache.Controller, error) {
+	source := cache.NewListWatchFromClient(
+		c.ExampleClient,
+		tprv1.ExampleResourcePlural,
+		apiv1.NamespaceAll,
+		fields.Everything())
+
+	_, controller := cache.NewInformer(
+		source,
+
+		// The object type.
+		&tprv1.Example{},
+
+		// resyncPeriod
+		// Every resyncPeriod, all resources in the cache will retrigger events.
+		// Set to 0 to disable the resync.
+		0,
+
+		// Your custom resource event handlers.
+		cache.ResourceEventHandlerFuncs{
+			AddFunc:    c.onAdd,
+			UpdateFunc: c.onUpdate,
+			DeleteFunc: c.onDelete,
+		})
+
+	go controller.Run(ctx.Done())
+	return controller, nil
+}
+
+func (c *ExampleController) onAdd(obj interface{}) {
+	example := obj.(*tprv1.Example)
+	fmt.Printf("[CONTROLLER] OnAdd %s\n", example.ObjectMeta.SelfLink)
+
+	// NEVER modify objects from the store. It's a read-only, local cache.
+	// You can use exampleScheme.Copy() to make a deep copy of original object and modify this copy
+	// Or create a copy manually for better performance
+	copyObj, err := c.ExampleScheme.Copy(example)
+	if err != nil {
+		fmt.Printf("ERROR creating a deep copy of example object: %v\n", err)
+		return
+	}
+
+	exampleCopy := copyObj.(*tprv1.Example)
+	exampleCopy.Status = tprv1.ExampleStatus{
+		State:   tprv1.ExampleStateProcessed,
+		Message: "Successfully processed by controller",
+	}
+
+	err = c.ExampleClient.Put().
+		Name(example.ObjectMeta.Name).
+		Namespace(example.ObjectMeta.Namespace).
+		Resource(tprv1.ExampleResourcePlural).
+		Body(exampleCopy).
+		Do().
+		Error()
+
+	if err != nil {
+		fmt.Printf("ERROR updating status: %v\n", err)
+	} else {
+		fmt.Printf("UPDATED status: %#v\n", exampleCopy)
+	}
+}
+
+func (c *ExampleController) onUpdate(oldObj, newObj interface{}) {
+	oldExample := oldObj.(*tprv1.Example)
+	newExample := newObj.(*tprv1.Example)
+	fmt.Printf("[CONTROLLER] OnUpdate oldObj: %s\n", oldExample.ObjectMeta.SelfLink)
+	fmt.Printf("[CONTROLLER] OnUpdate newObj: %s\n", newExample.ObjectMeta.SelfLink)
+}
+
+func (c *ExampleController) onDelete(obj interface{}) {
+	example := obj.(*tprv1.Example)
+	fmt.Printf("[CONTROLLER] OnDelete %s\n", example.ObjectMeta.SelfLink)
+}

examples/third-party-resources/main.go

@@ -18,22 +18,23 @@ limitations under the License.
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 
-	"k8s.io/apimachinery/pkg/api/errors"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/kubernetes/scheme"
+	apiv1 "k8s.io/client-go/pkg/api/v1"
-	"k8s.io/client-go/pkg/api/v1"
-	"k8s.io/client-go/pkg/apis/extensions/v1beta1"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
+
 	// Uncomment the following line to load the gcp plugin (only required to authenticate against GKE clusters).
 	// _ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
+
+	tprv1 "k8s.io/client-go/examples/third-party-resources/apis/tpr/v1"
+	exampleclient "k8s.io/client-go/examples/third-party-resources/client"
+	examplecontroller "k8s.io/client-go/examples/third-party-resources/controller"
 )
 
 func main() {
@@ -52,83 +53,71 @@ func main() {
 	}
 
 	// initialize third party resource if it does not exist
-	tpr, err := clientset.ExtensionsV1beta1().ThirdPartyResources().Get("example.k8s.io", metav1.GetOptions{})
+	err = exampleclient.CreateTPR(clientset)
-	if err != nil {
+	if err != nil && !apierrors.IsAlreadyExists(err) {
-		if errors.IsNotFound(err) {
-			tpr := &v1beta1.ThirdPartyResource{
-				ObjectMeta: metav1.ObjectMeta{
-					Name: "example.k8s.io",
-				},
-				Versions: []v1beta1.APIVersion{
-					{Name: "v1"},
-				},
-				Description: "An Example ThirdPartyResource",
-			}
-
-			result, err := clientset.ExtensionsV1beta1().ThirdPartyResources().Create(tpr)
-			if err != nil {
 		panic(err)
 	}
-			fmt.Printf("CREATED: %#v\nFROM: %#v\n", result, tpr)
-		} else {
-			panic(err)
-		}
-	} else {
-		fmt.Printf("SKIPPING: already exists %#v\n", tpr)
-	}
 
 	// make a new config for our extension's API group, using the first config as a baseline
-	var tprconfig *rest.Config
+	exampleClient, exampleScheme, err := exampleclient.NewClient(config)
-	tprconfig = config
-	configureClient(tprconfig)
-
-	tprclient, err := rest.RESTClientFor(tprconfig)
 	if err != nil {
 		panic(err)
 	}
 
-	var example Example
+	// wait until TPR gets processed
-
+	err = exampleclient.WaitForExampleResource(exampleClient)
-	err = tprclient.Get().
-		Resource("examples").
-		Namespace(v1.NamespaceDefault).
-		Name("example1").
-		Do().Into(&example)
-
 	if err != nil {
-		if errors.IsNotFound(err) {
+		panic(err)
+	}
+
+	// start a controller on instances of our TPR
+	controller := examplecontroller.ExampleController{
+		ExampleClient: exampleClient,
+		ExampleScheme: exampleScheme,
+	}
+
+	ctx, cancelFunc := context.WithCancel(context.Background())
+	defer cancelFunc()
+	go controller.Run(ctx)
+
 	// Create an instance of our TPR
-			example := &Example{
+	example := &tprv1.Example{
-				Metadata: metav1.ObjectMeta{
+		ObjectMeta: metav1.ObjectMeta{
 			Name: "example1",
 		},
-				Spec: ExampleSpec{
+		Spec: tprv1.ExampleSpec{
 			Foo: "hello",
 			Bar: true,
 		},
+		Status: tprv1.ExampleStatus{
+			State:   tprv1.ExampleStateCreated,
+			Message: "Created, not processed yet",
+		},
 	}
-
+	var result tprv1.Example
-			var result Example
+	err = exampleClient.Post().
-			err = tprclient.Post().
+		Resource(tprv1.ExampleResourcePlural).
-				Resource("examples").
+		Namespace(apiv1.NamespaceDefault).
-				Namespace(v1.NamespaceDefault).
 		Body(example).
 		Do().Into(&result)
+	if err == nil {
+		fmt.Printf("CREATED: %#v\n", result)
+	} else if apierrors.IsAlreadyExists(err) {
+		fmt.Printf("ALREADY EXISTS: %#v\n", result)
+	} else {
+		panic(err)
+	}
 
+	// Poll until Example object is handled by controller and gets status updated to "Processed"
+	err = exampleclient.WaitForExampleInstanceProcessed(exampleClient, "example1")
 	if err != nil {
 		panic(err)
 	}
-			fmt.Printf("CREATED: %#v\n", result)
+	fmt.Print("PROCESSED\n")
-		} else {
-			panic(err)
-		}
-	} else {
-		fmt.Printf("GET: %#v\n", example)
-	}
 
 	// Fetch a list of our TPRs
-	exampleList := ExampleList{}
+	exampleList := tprv1.ExampleList{}
-	err = tprclient.Get().Resource("examples").Do().Into(&exampleList)
+	err = exampleClient.Get().Resource(tprv1.ExampleResourcePlural).Do().Into(&exampleList)
 	if err != nil {
 		panic(err)
 	}
@@ -141,27 +130,3 @@ func buildConfig(kubeconfig string) (*rest.Config, error) {
 	}
 	return rest.InClusterConfig()
 }
-
-func configureClient(config *rest.Config) {
-	groupversion := schema.GroupVersion{
-		Group:   "k8s.io",
-		Version: "v1",
-	}
-
-	config.GroupVersion = &groupversion
-	config.APIPath = "/apis"
-	config.ContentType = runtime.ContentTypeJSON
-	config.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: scheme.Codecs}
-
-	schemeBuilder := runtime.NewSchemeBuilder(
-		func(scheme *runtime.Scheme) error {
-			scheme.AddKnownTypes(
-				groupversion,
-				&Example{},
-				&ExampleList{},
-			)
-			return nil
-		})
-	metav1.AddToGroupVersion(scheme.Scheme, groupversion)
-	schemeBuilder.AddToScheme(scheme.Scheme)
-}

examples/third-party-resources/types.go

@@ -1,92 +0,0 @@
-/*
-Copyright 2017 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 main
-
-import (
-	"encoding/json"
-
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/runtime/schema"
-)
-
-type ExampleSpec struct {
-	Foo string `json:"foo"`
-	Bar bool   `json:"bar"`
-}
-
-type Example struct {
-	metav1.TypeMeta `json:",inline"`
-	Metadata        metav1.ObjectMeta `json:"metadata"`
-
-	Spec ExampleSpec `json:"spec"`
-}
-
-type ExampleList struct {
-	metav1.TypeMeta `json:",inline"`
-	Metadata        metav1.ListMeta `json:"metadata"`
-
-	Items []Example `json:"items"`
-}
-
-// Required to satisfy Object interface
-func (e *Example) GetObjectKind() schema.ObjectKind {
-	return &e.TypeMeta
-}
-
-// Required to satisfy ObjectMetaAccessor interface
-func (e *Example) GetObjectMeta() metav1.Object {
-	return &e.Metadata
-}
-
-// Required to satisfy Object interface
-func (el *ExampleList) GetObjectKind() schema.ObjectKind {
-	return &el.TypeMeta
-}
-
-// Required to satisfy ListMetaAccessor interface
-func (el *ExampleList) GetListMeta() metav1.List {
-	return &el.Metadata
-}
-
-// The code below is used only to work around a known problem with third-party
-// resources and ugorji. If/when these issues are resolved, the code below
-// should no longer be required.
-
-type ExampleListCopy ExampleList
-type ExampleCopy Example
-
-func (e *Example) UnmarshalJSON(data []byte) error {
-	tmp := ExampleCopy{}
-	err := json.Unmarshal(data, &tmp)
-	if err != nil {
-		return err
-	}
-	tmp2 := Example(tmp)
-	*e = tmp2
-	return nil
-}
-
-func (el *ExampleList) UnmarshalJSON(data []byte) error {
-	tmp := ExampleListCopy{}
-	err := json.Unmarshal(data, &tmp)
-	if err != nil {
-		return err
-	}
-	tmp2 := ExampleList(tmp)
-	*el = tmp2
-	return nil
-}