fake.go

/*
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 testing

import (
	"errors"
	"fmt"
	"io"
	"path/filepath"
	"time"

	"github.com/spf13/cobra"
	"github.com/spf13/pflag"

	"k8s.io/api/core/v1"
	"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/runtime/serializer"
	"k8s.io/client-go/discovery"
	"k8s.io/client-go/kubernetes"
	restclient "k8s.io/client-go/rest"
	"k8s.io/client-go/rest/fake"
	"k8s.io/kubernetes/pkg/api/legacyscheme"
	"k8s.io/kubernetes/pkg/api/testapi"
	api "k8s.io/kubernetes/pkg/apis/core"
	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
	"k8s.io/kubernetes/pkg/kubectl"
	"k8s.io/kubernetes/pkg/kubectl/categories"
	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
	"k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi"
	openapitesting "k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi/testing"
	"k8s.io/kubernetes/pkg/kubectl/plugins"
	"k8s.io/kubernetes/pkg/kubectl/resource"
	"k8s.io/kubernetes/pkg/kubectl/validation"
	"k8s.io/kubernetes/pkg/printers"
	metricsclientset "k8s.io/metrics/pkg/client/clientset_generated/clientset"
)

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type InternalType struct {
	Kind       string
	APIVersion string

	Name string
}

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type ExternalType struct {
	Kind       string `json:"kind"`
	APIVersion string `json:"apiVersion"`

	Name string `json:"name"`
}

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type ExternalType2 struct {
	Kind       string `json:"kind"`
	APIVersion string `json:"apiVersion"`

	Name string `json:"name"`
}

func (obj *InternalType) GetObjectKind() schema.ObjectKind { return obj }
func (obj *InternalType) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *InternalType) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}
func (obj *ExternalType) GetObjectKind() schema.ObjectKind { return obj }
func (obj *ExternalType) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *ExternalType) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}
func (obj *ExternalType2) GetObjectKind() schema.ObjectKind { return obj }
func (obj *ExternalType2) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *ExternalType2) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}

func NewInternalType(kind, apiversion, name string) *InternalType {
	item := InternalType{Kind: kind,
		APIVersion: apiversion,
		Name:       name}
	return &item
}

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type InternalNamespacedType struct {
	Kind       string
	APIVersion string

	Name      string
	Namespace string
}

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type ExternalNamespacedType struct {
	Kind       string `json:"kind"`
	APIVersion string `json:"apiVersion"`

	Name      string `json:"name"`
	Namespace string `json:"namespace"`
}

// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type ExternalNamespacedType2 struct {
	Kind       string `json:"kind"`
	APIVersion string `json:"apiVersion"`

	Name      string `json:"name"`
	Namespace string `json:"namespace"`
}

func (obj *InternalNamespacedType) GetObjectKind() schema.ObjectKind { return obj }
func (obj *InternalNamespacedType) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *InternalNamespacedType) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}
func (obj *ExternalNamespacedType) GetObjectKind() schema.ObjectKind { return obj }
func (obj *ExternalNamespacedType) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *ExternalNamespacedType) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}
func (obj *ExternalNamespacedType2) GetObjectKind() schema.ObjectKind { return obj }
func (obj *ExternalNamespacedType2) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}
func (obj *ExternalNamespacedType2) GroupVersionKind() schema.GroupVersionKind {
	return schema.FromAPIVersionAndKind(obj.APIVersion, obj.Kind)
}

func NewInternalNamespacedType(kind, apiversion, name, namespace string) *InternalNamespacedType {
	item := InternalNamespacedType{Kind: kind,
		APIVersion: apiversion,
		Name:       name,
		Namespace:  namespace}
	return &item
}

var versionErr = errors.New("not a version")

func versionErrIfFalse(b bool) error {
	if b {
		return nil
	}
	return versionErr
}

var ValidVersion = legacyscheme.Registry.GroupOrDie(api.GroupName).GroupVersion.Version
var InternalGV = schema.GroupVersion{Group: "apitest", Version: runtime.APIVersionInternal}
var UnlikelyGV = schema.GroupVersion{Group: "apitest", Version: "unlikelyversion"}
var ValidVersionGV = schema.GroupVersion{Group: "apitest", Version: ValidVersion}

func newExternalScheme() (*runtime.Scheme, meta.RESTMapper, runtime.Codec) {
	scheme := runtime.NewScheme()

	scheme.AddKnownTypeWithName(InternalGV.WithKind("Type"), &InternalType{})
	scheme.AddKnownTypeWithName(UnlikelyGV.WithKind("Type"), &ExternalType{})
	//This tests that kubectl will not confuse the external scheme with the internal scheme, even when they accidentally have versions of the same name.
	scheme.AddKnownTypeWithName(ValidVersionGV.WithKind("Type"), &ExternalType2{})

	scheme.AddKnownTypeWithName(InternalGV.WithKind("NamespacedType"), &InternalNamespacedType{})
	scheme.AddKnownTypeWithName(UnlikelyGV.WithKind("NamespacedType"), &ExternalNamespacedType{})
	//This tests that kubectl will not confuse the external scheme with the internal scheme, even when they accidentally have versions of the same name.
	scheme.AddKnownTypeWithName(ValidVersionGV.WithKind("NamespacedType"), &ExternalNamespacedType2{})

	codecs := serializer.NewCodecFactory(scheme)
	codec := codecs.LegacyCodec(UnlikelyGV)
	mapper := meta.NewDefaultRESTMapper([]schema.GroupVersion{UnlikelyGV, ValidVersionGV}, func(version schema.GroupVersion) (*meta.VersionInterfaces, error) {
		return &meta.VersionInterfaces{
			ObjectConvertor:  scheme,
			MetadataAccessor: meta.NewAccessor(),
		}, versionErrIfFalse(version == ValidVersionGV || version == UnlikelyGV)
	})
	for _, gv := range []schema.GroupVersion{UnlikelyGV, ValidVersionGV} {
		for kind := range scheme.KnownTypes(gv) {
			gvk := gv.WithKind(kind)

			scope := meta.RESTScopeNamespace
			mapper.Add(gvk, scope)
		}
	}

	return scheme, mapper, codec
}

type fakeCachedDiscoveryClient struct {
	discovery.DiscoveryInterface
}

func (d *fakeCachedDiscoveryClient) Fresh() bool {
	return true
}

func (d *fakeCachedDiscoveryClient) Invalidate() {
}

func (d *fakeCachedDiscoveryClient) ServerResources() ([]*metav1.APIResourceList, error) {
	return []*metav1.APIResourceList{}, nil
}

type TestFactory struct {
	Mapper             meta.RESTMapper
	Typer              runtime.ObjectTyper
	Client             kubectl.RESTClient
	UnstructuredClient kubectl.RESTClient
	Describer          printers.Describer
	Printer            printers.ResourcePrinter
	Validator          validation.Schema
	Namespace          string
	ClientConfig       *restclient.Config
	Err                error
	Command            string
	TmpDir             string
	CategoryExpander   categories.CategoryExpander
	SkipDiscovery      bool
	MetricsClientSet   metricsclientset.Interface

	ClientForMappingFunc             func(mapping *meta.RESTMapping) (resource.RESTClient, error)
	UnstructuredClientForMappingFunc func(mapping *meta.RESTMapping) (resource.RESTClient, error)
	OpenAPISchemaFunc                func() (openapi.Resources, error)
}

type FakeFactory struct {
	tf    *TestFactory
	Codec runtime.Codec
}

func NewTestFactory() (cmdutil.Factory, *TestFactory, runtime.Codec, runtime.NegotiatedSerializer) {
	scheme, mapper, codec := newExternalScheme()
	t := &TestFactory{
		Validator: validation.NullSchema{},
		Mapper:    mapper,
		Typer:     scheme,
	}
	negotiatedSerializer := serializer.NegotiatedSerializerWrapper(runtime.SerializerInfo{Serializer: codec})
	return &FakeFactory{
		tf:    t,
		Codec: codec,
	}, t, codec, negotiatedSerializer
}

func (f *FakeFactory) DiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
	discoveryClient, err := discovery.NewDiscoveryClientForConfig(f.tf.ClientConfig)
	if err != nil {
		return nil, err
	}
	return &fakeCachedDiscoveryClient{DiscoveryInterface: discoveryClient}, nil
}

func (f *FakeFactory) FlagSet() *pflag.FlagSet {
	return nil
}

func (f *FakeFactory) Object() (meta.RESTMapper, runtime.ObjectTyper) {
	if f.tf.SkipDiscovery {
		return legacyscheme.Registry.RESTMapper(), f.tf.Typer
	}
	groupResources := testDynamicResources()
	mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructuredConversion(legacyscheme.Registry.InterfacesFor))
	typer := discovery.NewUnstructuredObjectTyper(groupResources, legacyscheme.Scheme)

	fakeDs := &fakeCachedDiscoveryClient{}
	expander := cmdutil.NewShortcutExpander(mapper, fakeDs)
	return expander, typer
}

func (f *FakeFactory) CategoryExpander() categories.CategoryExpander {
	return categories.LegacyCategoryExpander
}

func (f *FakeFactory) Decoder(bool) runtime.Decoder {
	return f.Codec
}

func (f *FakeFactory) JSONEncoder() runtime.Encoder {
	return f.Codec
}

func (f *FakeFactory) RESTClient() (*restclient.RESTClient, error) {
	return nil, nil
}

func (f *FakeFactory) KubernetesClientSet() (*kubernetes.Clientset, error) {
	return nil, nil
}

func (f *FakeFactory) MetricsClientSet() (metricsclientset.Interface, error) {
	return f.tf.MetricsClientSet, f.tf.Err
}

func (f *FakeFactory) ClientSet() (internalclientset.Interface, error) {
	return nil, nil
}

func (f *FakeFactory) ClientConfig() (*restclient.Config, error) {
	return f.tf.ClientConfig, f.tf.Err
}

func (f *FakeFactory) BareClientConfig() (*restclient.Config, error) {
	return f.tf.ClientConfig, f.tf.Err
}

func (f *FakeFactory) ClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error) {
	if f.tf.ClientForMappingFunc != nil {
		return f.tf.ClientForMappingFunc(mapping)
	}
	return f.tf.Client, f.tf.Err
}

func (f *FakeFactory) ClientSetForVersion(requiredVersion *schema.GroupVersion) (internalclientset.Interface, error) {
	return nil, nil
}
func (f *FakeFactory) ClientConfigForVersion(requiredVersion *schema.GroupVersion) (*restclient.Config, error) {
	return nil, nil
}

func (f *FakeFactory) UnstructuredClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error) {
	if f.tf.UnstructuredClientForMappingFunc != nil {
		return f.tf.UnstructuredClientForMappingFunc(mapping)
	}
	return f.tf.UnstructuredClient, f.tf.Err
}

func (f *FakeFactory) Describer(*meta.RESTMapping) (printers.Describer, error) {
	return f.tf.Describer, f.tf.Err
}

func (f *FakeFactory) PrinterForOptions(options *printers.PrintOptions) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *FakeFactory) PrintResourceInfoForCommand(cmd *cobra.Command, info *resource.Info, out io.Writer) error {
	printer, err := f.PrinterForOptions(&printers.PrintOptions{})
	if err != nil {
		return err
	}
	if !printer.IsGeneric() {
		printer, err = f.PrinterForMapping(&printers.PrintOptions{}, nil)
		if err != nil {
			return err
		}
	}
	return printer.PrintObj(info.Object, out)
}

func (f *FakeFactory) PrintSuccess(mapper meta.RESTMapper, shortOutput bool, out io.Writer, resource, name string, dryRun bool, operation string) {
	resource, _ = mapper.ResourceSingularizer(resource)
	dryRunMsg := ""
	if dryRun {
		dryRunMsg = " (dry run)"
	}
	if shortOutput {
		// -o name: prints resource/name
		if len(resource) > 0 {
			fmt.Fprintf(out, "%s/%s\n", resource, name)
		} else {
			fmt.Fprintf(out, "%s\n", name)
		}
	} else {
		// understandable output by default
		if len(resource) > 0 {
			fmt.Fprintf(out, "%s \"%s\" %s%s\n", resource, name, operation, dryRunMsg)
		} else {
			fmt.Fprintf(out, "\"%s\" %s%s\n", name, operation, dryRunMsg)
		}
	}
}

func (f *FakeFactory) Printer(mapping *meta.RESTMapping, options printers.PrintOptions) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *FakeFactory) Scaler(*meta.RESTMapping) (kubectl.Scaler, error) {
	return nil, nil
}

func (f *FakeFactory) Reaper(*meta.RESTMapping) (kubectl.Reaper, error) {
	return nil, nil
}

func (f *FakeFactory) HistoryViewer(*meta.RESTMapping) (kubectl.HistoryViewer, error) {
	return nil, nil
}

func (f *FakeFactory) Rollbacker(*meta.RESTMapping) (kubectl.Rollbacker, error) {
	return nil, nil
}

func (f *FakeFactory) StatusViewer(*meta.RESTMapping) (kubectl.StatusViewer, error) {
	return nil, nil
}

func (f *FakeFactory) MapBasedSelectorForObject(runtime.Object) (string, error) {
	return "", nil
}

func (f *FakeFactory) PortsForObject(runtime.Object) ([]string, error) {
	return nil, nil
}

func (f *FakeFactory) ProtocolsForObject(runtime.Object) (map[string]string, error) {
	return nil, nil
}

func (f *FakeFactory) LabelsForObject(runtime.Object) (map[string]string, error) {
	return nil, nil
}

func (f *FakeFactory) LogsForObject(object, options runtime.Object, timeout time.Duration) (*restclient.Request, error) {
	return nil, nil
}

func (f *FakeFactory) Pauser(info *resource.Info) ([]byte, error) {
	return nil, nil
}

func (f *FakeFactory) Resumer(info *resource.Info) ([]byte, error) {
	return nil, nil
}

func (f *FakeFactory) ResolveImage(name string) (string, error) {
	return name, nil
}

func (f *FakeFactory) Validator(validate bool) (validation.Schema, error) {
	return f.tf.Validator, f.tf.Err
}

func (f *FakeFactory) OpenAPISchema() (openapi.Resources, error) {
	return nil, nil
}

func (f *FakeFactory) DefaultNamespace() (string, bool, error) {
	return f.tf.Namespace, false, f.tf.Err
}

func (f *FakeFactory) Generators(cmdName string) map[string]kubectl.Generator {
	var generator map[string]kubectl.Generator
	switch cmdName {
	case "run":
		generator = map[string]kubectl.Generator{
			cmdutil.DeploymentV1Beta1GeneratorName: kubectl.DeploymentV1Beta1{},
		}
	}
	return generator
}

func (f *FakeFactory) CanBeExposed(schema.GroupKind) error {
	return nil
}

func (f *FakeFactory) CanBeAutoscaled(schema.GroupKind) error {
	return nil
}

func (f *FakeFactory) AttachablePodForObject(ob runtime.Object, timeout time.Duration) (*api.Pod, error) {
	return nil, nil
}

func (f *FakeFactory) ApproximatePodTemplateForObject(obj runtime.Object) (*api.PodTemplateSpec, error) {
	return f.ApproximatePodTemplateForObject(obj)
}

func (f *FakeFactory) UpdatePodSpecForObject(obj runtime.Object, fn func(*v1.PodSpec) error) (bool, error) {
	return false, nil
}

func (f *FakeFactory) EditorEnvs() []string {
	return nil
}

func (f *FakeFactory) PrintObjectSpecificMessage(obj runtime.Object, out io.Writer) {
}

func (f *FakeFactory) Command(*cobra.Command, bool) string {
	return f.tf.Command
}

func (f *FakeFactory) BindFlags(flags *pflag.FlagSet) {
}

func (f *FakeFactory) BindExternalFlags(flags *pflag.FlagSet) {
}

func (f *FakeFactory) PrintObject(cmd *cobra.Command, isLocal bool, mapper meta.RESTMapper, obj runtime.Object, out io.Writer) error {
	return nil
}

func (f *FakeFactory) PrinterForMapping(printOpts *printers.PrintOptions, mapping *meta.RESTMapping) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *FakeFactory) NewBuilder() *resource.Builder {
	mapper, typer := f.Object()

	return resource.NewBuilder(
		&resource.Mapper{
			RESTMapper:   mapper,
			ObjectTyper:  typer,
			ClientMapper: resource.ClientMapperFunc(f.ClientForMapping),
			Decoder:      f.Decoder(true),
		},
		&resource.Mapper{
			RESTMapper:   mapper,
			ObjectTyper:  typer,
			ClientMapper: resource.ClientMapperFunc(f.UnstructuredClientForMapping),
			Decoder:      unstructured.UnstructuredJSONScheme,
		},
		f.CategoryExpander(),
	)
}

func (f *FakeFactory) DefaultResourceFilterOptions(cmd *cobra.Command, withNamespace bool) *printers.PrintOptions {
	return &printers.PrintOptions{}
}

func (f *FakeFactory) DefaultResourceFilterFunc() kubectl.Filters {
	return nil
}

func (f *FakeFactory) SuggestedPodTemplateResources() []schema.GroupResource {
	return []schema.GroupResource{}
}

func (f *FakeFactory) PluginLoader() plugins.PluginLoader {
	return &plugins.DummyPluginLoader{}
}

func (f *FakeFactory) PluginRunner() plugins.PluginRunner {
	return &plugins.ExecPluginRunner{}
}

type fakeMixedFactory struct {
	cmdutil.Factory
	tf        *TestFactory
	apiClient resource.RESTClient
}

func (f *fakeMixedFactory) Object() (meta.RESTMapper, runtime.ObjectTyper) {
	var multiRESTMapper meta.MultiRESTMapper
	multiRESTMapper = append(multiRESTMapper, f.tf.Mapper)
	multiRESTMapper = append(multiRESTMapper, testapi.Default.RESTMapper())
	priorityRESTMapper := meta.PriorityRESTMapper{
		Delegate: multiRESTMapper,
		ResourcePriority: []schema.GroupVersionResource{
			{Group: meta.AnyGroup, Version: "v1", Resource: meta.AnyResource},
		},
		KindPriority: []schema.GroupVersionKind{
			{Group: meta.AnyGroup, Version: "v1", Kind: meta.AnyKind},
		},
	}
	return priorityRESTMapper, runtime.MultiObjectTyper{f.tf.Typer, legacyscheme.Scheme}
}

func (f *fakeMixedFactory) ClientForMapping(m *meta.RESTMapping) (resource.RESTClient, error) {
	if m.ObjectConvertor == legacyscheme.Scheme {
		return f.apiClient, f.tf.Err
	}
	if f.tf.ClientForMappingFunc != nil {
		return f.tf.ClientForMappingFunc(m)
	}
	return f.tf.Client, f.tf.Err
}

func NewMixedFactory(apiClient resource.RESTClient) (cmdutil.Factory, *TestFactory, runtime.Codec) {
	f, t, c, _ := NewAPIFactory()
	return &fakeMixedFactory{
		Factory:   f,
		tf:        t,
		apiClient: apiClient,
	}, t, c
}

type fakeAPIFactory struct {
	cmdutil.Factory
	tf *TestFactory
}

func (f *fakeAPIFactory) Object() (meta.RESTMapper, runtime.ObjectTyper) {
	if f.tf.SkipDiscovery {
		return testapi.Default.RESTMapper(), legacyscheme.Scheme
	}
	groupResources := testDynamicResources()
	mapper := discovery.NewRESTMapper(
		groupResources,
		meta.InterfacesForUnstructuredConversion(func(version schema.GroupVersion) (*meta.VersionInterfaces, error) {
			switch version {
			// provide typed objects for these two versions
			case ValidVersionGV, UnlikelyGV:
				return &meta.VersionInterfaces{
					ObjectConvertor:  f.tf.Typer.(*runtime.Scheme),
					MetadataAccessor: meta.NewAccessor(),
				}, nil
			// otherwise fall back to the legacy scheme
			default:
				return legacyscheme.Registry.InterfacesFor(version)
			}
		}),
	)
	// for backwards compatibility with existing tests, allow rest mappings from the scheme to show up
	// TODO: make this opt-in?
	mapper = meta.FirstHitRESTMapper{
		MultiRESTMapper: meta.MultiRESTMapper{
			mapper,
			legacyscheme.Registry.RESTMapper(),
		},
	}

	// TODO: should probably be the external scheme
	typer := discovery.NewUnstructuredObjectTyper(groupResources, legacyscheme.Scheme)
	fakeDs := &fakeCachedDiscoveryClient{}
	expander := cmdutil.NewShortcutExpander(mapper, fakeDs)
	return expander, typer
}

func (f *fakeAPIFactory) Decoder(bool) runtime.Decoder {
	return testapi.Default.Codec()
}

func (f *fakeAPIFactory) JSONEncoder() runtime.Encoder {
	return testapi.Default.Codec()
}

func (f *fakeAPIFactory) KubernetesClientSet() (*kubernetes.Clientset, error) {
	fakeClient := f.tf.Client.(*fake.RESTClient)
	clientset := kubernetes.NewForConfigOrDie(f.tf.ClientConfig)

	clientset.CoreV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AuthorizationV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AuthorizationV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AuthorizationV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AuthorizationV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AutoscalingV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AutoscalingV2beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.BatchV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.BatchV2alpha1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.CertificatesV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.ExtensionsV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.RbacV1alpha1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.RbacV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.StorageV1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.StorageV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AppsV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.AppsV1beta2().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.PolicyV1beta1().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.DiscoveryClient.RESTClient().(*restclient.RESTClient).Client = fakeClient.Client

	return clientset, f.tf.Err
}

func (f *fakeAPIFactory) MetricsClientSet() (metricsclientset.Interface, error) {
	return f.tf.MetricsClientSet, f.tf.Err
}

func (f *fakeAPIFactory) ClientSet() (internalclientset.Interface, error) {
	// Swap the HTTP client out of the REST client with the fake
	// version.
	fakeClient := f.tf.Client.(*fake.RESTClient)
	clientset := internalclientset.NewForConfigOrDie(f.tf.ClientConfig)
	clientset.Core().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Authentication().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Authorization().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Autoscaling().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Batch().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Certificates().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Extensions().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Rbac().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Storage().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Apps().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.Policy().RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	clientset.DiscoveryClient.RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
	return clientset, f.tf.Err
}

func (f *fakeAPIFactory) RESTClient() (*restclient.RESTClient, error) {
	// Swap out the HTTP client out of the client with the fake's version.
	fakeClient := f.tf.Client.(*fake.RESTClient)
	restClient, err := restclient.RESTClientFor(f.tf.ClientConfig)
	if err != nil {
		panic(err)
	}
	restClient.Client = fakeClient.Client
	return restClient, f.tf.Err
}

func (f *fakeAPIFactory) DiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
	fakeClient := f.tf.Client.(*fake.RESTClient)
	discoveryClient := discovery.NewDiscoveryClientForConfigOrDie(f.tf.ClientConfig)
	discoveryClient.RESTClient().(*restclient.RESTClient).Client = fakeClient.Client

	cacheDir := filepath.Join(f.tf.TmpDir, ".kube", "cache", "discovery")
	return cmdutil.NewCachedDiscoveryClient(discoveryClient, cacheDir, time.Duration(10*time.Minute)), nil
}

func (f *fakeAPIFactory) CategoryExpander() categories.CategoryExpander {
	if f.tf.CategoryExpander != nil {
		return f.tf.CategoryExpander
	}
	return f.Factory.CategoryExpander()
}

func (f *fakeAPIFactory) ClientSetForVersion(requiredVersion *schema.GroupVersion) (internalclientset.Interface, error) {
	return f.ClientSet()
}

func (f *fakeAPIFactory) ClientConfig() (*restclient.Config, error) {
	return f.tf.ClientConfig, f.tf.Err
}

func (f *fakeAPIFactory) ClientForMapping(m *meta.RESTMapping) (resource.RESTClient, error) {
	if f.tf.ClientForMappingFunc != nil {
		return f.tf.ClientForMappingFunc(m)
	}
	return f.tf.Client, f.tf.Err
}

func (f *fakeAPIFactory) UnstructuredClientForMapping(m *meta.RESTMapping) (resource.RESTClient, error) {
	if f.tf.UnstructuredClientForMappingFunc != nil {
		return f.tf.UnstructuredClientForMappingFunc(m)
	}
	return f.tf.UnstructuredClient, f.tf.Err
}

func (f *fakeAPIFactory) PrinterForOptions(options *printers.PrintOptions) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *fakeAPIFactory) PrintResourceInfoForCommand(cmd *cobra.Command, info *resource.Info, out io.Writer) error {
	printer, err := f.PrinterForOptions(&printers.PrintOptions{})
	if err != nil {
		return err
	}
	if !printer.IsGeneric() {
		printer, err = f.PrinterForMapping(&printers.PrintOptions{}, nil)
		if err != nil {
			return err
		}
	}
	return printer.PrintObj(info.Object, out)
}

func (f *fakeAPIFactory) PrintSuccess(mapper meta.RESTMapper, shortOutput bool, out io.Writer, resource, name string, dryRun bool, operation string) {
	resource, _ = mapper.ResourceSingularizer(resource)
	dryRunMsg := ""
	if dryRun {
		dryRunMsg = " (dry run)"
	}
	if shortOutput {
		// -o name: prints resource/name
		if len(resource) > 0 {
			fmt.Fprintf(out, "%s/%s\n", resource, name)
		} else {
			fmt.Fprintf(out, "%s\n", name)
		}
	} else {
		// understandable output by default
		if len(resource) > 0 {
			fmt.Fprintf(out, "%s \"%s\" %s%s\n", resource, name, operation, dryRunMsg)
		} else {
			fmt.Fprintf(out, "\"%s\" %s%s\n", name, operation, dryRunMsg)
		}
	}
}

func (f *fakeAPIFactory) Describer(*meta.RESTMapping) (printers.Describer, error) {
	return f.tf.Describer, f.tf.Err
}

func (f *fakeAPIFactory) Printer(mapping *meta.RESTMapping, options printers.PrintOptions) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *fakeAPIFactory) LogsForObject(object, options runtime.Object, timeout time.Duration) (*restclient.Request, error) {
	c, err := f.ClientSet()
	if err != nil {
		panic(err)
	}

	switch t := object.(type) {
	case *api.Pod:
		opts, ok := options.(*api.PodLogOptions)
		if !ok {
			return nil, errors.New("provided options object is not a PodLogOptions")
		}
		return c.Core().Pods(f.tf.Namespace).GetLogs(t.Name, opts), nil
	default:
		return nil, fmt.Errorf("cannot get the logs from %T", object)
	}
}

func (f *fakeAPIFactory) AttachablePodForObject(object runtime.Object, timeout time.Duration) (*api.Pod, error) {
	switch t := object.(type) {
	case *api.Pod:
		return t, nil
	default:
		return nil, fmt.Errorf("cannot attach to %T: not implemented", object)
	}
}

func (f *fakeAPIFactory) ApproximatePodTemplateForObject(obj runtime.Object) (*api.PodTemplateSpec, error) {
	return f.Factory.ApproximatePodTemplateForObject(obj)
}

func (f *fakeAPIFactory) Validator(validate bool) (validation.Schema, error) {
	return f.tf.Validator, f.tf.Err
}

func (f *fakeAPIFactory) DefaultNamespace() (string, bool, error) {
	return f.tf.Namespace, false, f.tf.Err
}

func (f *fakeAPIFactory) Command(*cobra.Command, bool) string {
	return f.tf.Command
}

func (f *fakeAPIFactory) Generators(cmdName string) map[string]kubectl.Generator {
	return cmdutil.DefaultGenerators(cmdName)
}

func (f *fakeAPIFactory) PrintObject(cmd *cobra.Command, isLocal bool, mapper meta.RESTMapper, obj runtime.Object, out io.Writer) error {
	gvks, _, err := legacyscheme.Scheme.ObjectKinds(obj)
	if err != nil {
		return err
	}

	mapping, err := mapper.RESTMapping(gvks[0].GroupKind())
	if err != nil {
		return err
	}

	printer, err := f.PrinterForMapping(&printers.PrintOptions{}, mapping)
	if err != nil {
		return err
	}
	return printer.PrintObj(obj, out)
}

func (f *fakeAPIFactory) PrinterForMapping(outputOpts *printers.PrintOptions, mapping *meta.RESTMapping) (printers.ResourcePrinter, error) {
	return f.tf.Printer, f.tf.Err
}

func (f *fakeAPIFactory) NewBuilder() *resource.Builder {
	mapper, typer := f.Object()

	return resource.NewBuilder(
		&resource.Mapper{
			RESTMapper:   mapper,
			ObjectTyper:  typer,
			ClientMapper: resource.ClientMapperFunc(f.ClientForMapping),
			Decoder:      f.Decoder(true),
		},
		&resource.Mapper{
			RESTMapper:   mapper,
			ObjectTyper:  typer,
			ClientMapper: resource.ClientMapperFunc(f.UnstructuredClientForMapping),
			Decoder:      unstructured.UnstructuredJSONScheme,
		},
		f.CategoryExpander(),
	)
}

func (f *fakeAPIFactory) SuggestedPodTemplateResources() []schema.GroupResource {
	return []schema.GroupResource{}
}

func (f *fakeAPIFactory) OpenAPISchema() (openapi.Resources, error) {
	if f.tf.OpenAPISchemaFunc != nil {
		return f.tf.OpenAPISchemaFunc()
	}
	return openapitesting.EmptyResources{}, nil
}

func NewAPIFactory() (cmdutil.Factory, *TestFactory, runtime.Codec, runtime.NegotiatedSerializer) {
	t := &TestFactory{
		Validator: validation.NullSchema{},
	}
	rf := cmdutil.NewFactory(nil)
	return &fakeAPIFactory{
		Factory: rf,
		tf:      t,
	}, t, testapi.Default.Codec(), testapi.Default.NegotiatedSerializer()
}

func (f *TestFactory) WithCustomScheme() *TestFactory {
	scheme, _, _ := newExternalScheme()
	f.Typer = scheme
	return f
}

func (f *TestFactory) WithLegacyScheme() *TestFactory {
	f.Typer = legacyscheme.Scheme
	return f
}

func testDynamicResources() []*discovery.APIGroupResources {
	return []*discovery.APIGroupResources{
		{
			Group: metav1.APIGroup{
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1": {
					{Name: "pods", Namespaced: true, Kind: "Pod"},
					{Name: "services", Namespaced: true, Kind: "Service"},
					{Name: "replicationcontrollers", Namespaced: true, Kind: "ReplicationController"},
					{Name: "componentstatuses", Namespaced: false, Kind: "ComponentStatus"},
					{Name: "nodes", Namespaced: false, Kind: "Node"},
					{Name: "secrets", Namespaced: true, Kind: "Secret"},
					{Name: "configmaps", Namespaced: true, Kind: "ConfigMap"},
					{Name: "namespacedtype", Namespaced: true, Kind: "NamespacedType"},
					{Name: "namespaces", Namespaced: false, Kind: "Namespace"},
					{Name: "resourcequotas", Namespaced: true, Kind: "ResourceQuota"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "extensions",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1beta1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1beta1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1beta1": {
					{Name: "deployments", Namespaced: true, Kind: "Deployment"},
					{Name: "replicasets", Namespaced: true, Kind: "ReplicaSet"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "apps",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1beta1"},
					{Version: "v1beta2"},
					{Version: "v1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1beta1": {
					{Name: "deployments", Namespaced: true, Kind: "Deployment"},
					{Name: "replicasets", Namespaced: true, Kind: "ReplicaSet"},
				},
				"v1beta2": {
					{Name: "deployments", Namespaced: true, Kind: "Deployment"},
				},
				"v1": {
					{Name: "deployments", Namespaced: true, Kind: "Deployment"},
					{Name: "replicasets", Namespaced: true, Kind: "ReplicaSet"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "autoscaling",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1"},
					{Version: "v2beta1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v2beta1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1": {
					{Name: "horizontalpodautoscalers", Namespaced: true, Kind: "HorizontalPodAutoscaler"},
				},
				"v2beta1": {
					{Name: "horizontalpodautoscalers", Namespaced: true, Kind: "HorizontalPodAutoscaler"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "storage.k8s.io",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1beta1"},
					{Version: "v0"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1beta1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1beta1": {
					{Name: "storageclasses", Namespaced: false, Kind: "StorageClass"},
				},
				// bogus version of a known group/version/resource to make sure kubectl falls back to generic object mode
				"v0": {
					{Name: "storageclasses", Namespaced: false, Kind: "StorageClass"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "rbac.authorization.k8s.io",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1beta1"},
					{Version: "v1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1": {
					{Name: "clusterroles", Namespaced: false, Kind: "ClusterRole"},
				},
				"v1beta1": {
					{Name: "clusterrolebindings", Namespaced: false, Kind: "ClusterRoleBinding"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "company.com",
				Versions: []metav1.GroupVersionForDiscovery{
					{Version: "v1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{Version: "v1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1": {
					{Name: "bars", Namespaced: true, Kind: "Bar"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "unit-test.test.com",
				Versions: []metav1.GroupVersionForDiscovery{
					{GroupVersion: "unit-test.test.com/v1", Version: "v1"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{
					GroupVersion: "unit-test.test.com/v1",
					Version:      "v1"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"v1": {
					{Name: "widgets", Namespaced: true, Kind: "Widget"},
				},
			},
		},
		{
			Group: metav1.APIGroup{
				Name: "apitest",
				Versions: []metav1.GroupVersionForDiscovery{
					{GroupVersion: "apitest/unlikelyversion", Version: "unlikelyversion"},
				},
				PreferredVersion: metav1.GroupVersionForDiscovery{
					GroupVersion: "apitest/unlikelyversion",
					Version:      "unlikelyversion"},
			},
			VersionedResources: map[string][]metav1.APIResource{
				"unlikelyversion": {
					{Name: "types", SingularName: "type", Namespaced: false, Kind: "Type"},
				},
			},
		},
	}
}