Update vendor

vendor/k8s.io/kubectl/pkg/cmd/util/factory.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2014 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 util
+
+import (
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/cli-runtime/pkg/resource"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/kubernetes"
+	restclient "k8s.io/client-go/rest"
+	"k8s.io/kubectl/pkg/util/openapi"
+	"k8s.io/kubectl/pkg/validation"
+)
+
+// Factory provides abstractions that allow the Kubectl command to be extended across multiple types
+// of resources and different API sets.
+// The rings are here for a reason. In order for composers to be able to provide alternative factory implementations
+// they need to provide low level pieces of *certain* functions so that when the factory calls back into itself
+// it uses the custom version of the function. Rather than try to enumerate everything that someone would want to override
+// we split the factory into rings, where each ring can depend on methods in an earlier ring, but cannot depend
+// upon peer methods in its own ring.
+// TODO: make the functions interfaces
+// TODO: pass the various interfaces on the factory directly into the command constructors (so the
+// commands are decoupled from the factory).
+type Factory interface {
+	genericclioptions.RESTClientGetter
+
+	// DynamicClient returns a dynamic client ready for use
+	DynamicClient() (dynamic.Interface, error)
+
+	// KubernetesClientSet gives you back an external clientset
+	KubernetesClientSet() (*kubernetes.Clientset, error)
+
+	// Returns a RESTClient for accessing Kubernetes resources or an error.
+	RESTClient() (*restclient.RESTClient, error)
+
+	// NewBuilder returns an object that assists in loading objects from both disk and the server
+	// and which implements the common patterns for CLI interactions with generic resources.
+	NewBuilder() *resource.Builder
+
+	// Returns a RESTClient for working with the specified RESTMapping or an error. This is intended
+	// for working with arbitrary resources and is not guaranteed to point to a Kubernetes APIServer.
+	ClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error)
+	// Returns a RESTClient for working with Unstructured objects.
+	UnstructuredClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error)
+
+	// Returns a schema that can validate objects stored on disk.
+	Validator(validate bool) (validation.Schema, error)
+	// OpenAPISchema returns the schema openapi schema definition
+	OpenAPISchema() (openapi.Resources, error)
+}

vendor/k8s.io/kubectl/pkg/cmd/util/factory_client_access.go

@@ -0,0 +1,177 @@
+/*
+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.
+*/
+
+// this file contains factories with no other dependencies
+
+package util
+
+import (
+	"sync"
+
+	corev1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/cli-runtime/pkg/resource"
+	"k8s.io/client-go/discovery"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/kubernetes"
+	restclient "k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/kubectl/pkg/util/openapi"
+	openapivalidation "k8s.io/kubectl/pkg/util/openapi/validation"
+	"k8s.io/kubectl/pkg/validation"
+)
+
+type factoryImpl struct {
+	clientGetter genericclioptions.RESTClientGetter
+
+	// openAPIGetter loads and caches openapi specs
+	openAPIGetter openAPIGetter
+}
+
+type openAPIGetter struct {
+	once   sync.Once
+	getter openapi.Getter
+}
+
+func NewFactory(clientGetter genericclioptions.RESTClientGetter) Factory {
+	if clientGetter == nil {
+		panic("attempt to instantiate client_access_factory with nil clientGetter")
+	}
+
+	f := &factoryImpl{
+		clientGetter: clientGetter,
+	}
+
+	return f
+}
+
+func (f *factoryImpl) ToRESTConfig() (*restclient.Config, error) {
+	return f.clientGetter.ToRESTConfig()
+}
+
+func (f *factoryImpl) ToRESTMapper() (meta.RESTMapper, error) {
+	return f.clientGetter.ToRESTMapper()
+}
+
+func (f *factoryImpl) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
+	return f.clientGetter.ToDiscoveryClient()
+}
+
+func (f *factoryImpl) ToRawKubeConfigLoader() clientcmd.ClientConfig {
+	return f.clientGetter.ToRawKubeConfigLoader()
+}
+
+func (f *factoryImpl) KubernetesClientSet() (*kubernetes.Clientset, error) {
+	clientConfig, err := f.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	return kubernetes.NewForConfig(clientConfig)
+}
+
+func (f *factoryImpl) DynamicClient() (dynamic.Interface, error) {
+	clientConfig, err := f.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	return dynamic.NewForConfig(clientConfig)
+}
+
+// NewBuilder returns a new resource builder for structured api objects.
+func (f *factoryImpl) NewBuilder() *resource.Builder {
+	return resource.NewBuilder(f.clientGetter)
+}
+
+func (f *factoryImpl) RESTClient() (*restclient.RESTClient, error) {
+	clientConfig, err := f.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	setKubernetesDefaults(clientConfig)
+	return restclient.RESTClientFor(clientConfig)
+}
+
+func (f *factoryImpl) ClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error) {
+	cfg, err := f.clientGetter.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	if err := setKubernetesDefaults(cfg); err != nil {
+		return nil, err
+	}
+	gvk := mapping.GroupVersionKind
+	switch gvk.Group {
+	case corev1.GroupName:
+		cfg.APIPath = "/api"
+	default:
+		cfg.APIPath = "/apis"
+	}
+	gv := gvk.GroupVersion()
+	cfg.GroupVersion = &gv
+	return restclient.RESTClientFor(cfg)
+}
+
+func (f *factoryImpl) UnstructuredClientForMapping(mapping *meta.RESTMapping) (resource.RESTClient, error) {
+	cfg, err := f.clientGetter.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	if err := restclient.SetKubernetesDefaults(cfg); err != nil {
+		return nil, err
+	}
+	cfg.APIPath = "/apis"
+	if mapping.GroupVersionKind.Group == corev1.GroupName {
+		cfg.APIPath = "/api"
+	}
+	gv := mapping.GroupVersionKind.GroupVersion()
+	cfg.ContentConfig = resource.UnstructuredPlusDefaultContentConfig()
+	cfg.GroupVersion = &gv
+	return restclient.RESTClientFor(cfg)
+}
+
+func (f *factoryImpl) Validator(validate bool) (validation.Schema, error) {
+	if !validate {
+		return validation.NullSchema{}, nil
+	}
+
+	resources, err := f.OpenAPISchema()
+	if err != nil {
+		return nil, err
+	}
+
+	return validation.ConjunctiveSchema{
+		openapivalidation.NewSchemaValidation(resources),
+		validation.NoDoubleKeySchema{},
+	}, nil
+}
+
+// OpenAPISchema returns metadata and structural information about Kubernetes object definitions.
+func (f *factoryImpl) OpenAPISchema() (openapi.Resources, error) {
+	discovery, err := f.clientGetter.ToDiscoveryClient()
+	if err != nil {
+		return nil, err
+	}
+
+	// Lazily initialize the OpenAPIGetter once
+	f.openAPIGetter.once.Do(func() {
+		// Create the caching OpenAPIGetter
+		f.openAPIGetter.getter = openapi.NewOpenAPIGetter(discovery)
+	})
+
+	// Delegate to the OpenAPIGetter
+	return f.openAPIGetter.getter.Get()
+}

vendor/k8s.io/kubectl/pkg/cmd/util/helpers.go

@@ -0,0 +1,728 @@
+/*
+Copyright 2014 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 util
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	jsonpatch "github.com/evanphx/json-patch"
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	utilerrors "k8s.io/apimachinery/pkg/util/errors"
+	"k8s.io/apimachinery/pkg/util/sets"
+	"k8s.io/apimachinery/pkg/util/yaml"
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/cli-runtime/pkg/resource"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/scale"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/klog"
+	utilexec "k8s.io/utils/exec"
+)
+
+const (
+	ApplyAnnotationsFlag = "save-config"
+	DefaultErrorExitCode = 1
+)
+
+type debugError interface {
+	DebugError() (msg string, args []interface{})
+}
+
+// AddSourceToErr adds handleResourcePrefix and source string to error message.
+// verb is the string like "creating", "deleting" etc.
+// source is the filename or URL to the template file(*.json or *.yaml), or stdin to use to handle the resource.
+func AddSourceToErr(verb string, source string, err error) error {
+	if source != "" {
+		if statusError, ok := err.(apierrors.APIStatus); ok {
+			status := statusError.Status()
+			status.Message = fmt.Sprintf("error when %s %q: %v", verb, source, status.Message)
+			return &apierrors.StatusError{ErrStatus: status}
+		}
+		return fmt.Errorf("error when %s %q: %v", verb, source, err)
+	}
+	return err
+}
+
+var fatalErrHandler = fatal
+
+// BehaviorOnFatal allows you to override the default behavior when a fatal
+// error occurs, which is to call os.Exit(code). You can pass 'panic' as a function
+// here if you prefer the panic() over os.Exit(1).
+func BehaviorOnFatal(f func(string, int)) {
+	fatalErrHandler = f
+}
+
+// DefaultBehaviorOnFatal allows you to undo any previous override.  Useful in
+// tests.
+func DefaultBehaviorOnFatal() {
+	fatalErrHandler = fatal
+}
+
+// fatal prints the message (if provided) and then exits. If V(2) or greater,
+// klog.Fatal is invoked for extended information.
+func fatal(msg string, code int) {
+	if klog.V(2) {
+		klog.FatalDepth(2, msg)
+	}
+	if len(msg) > 0 {
+		// add newline if needed
+		if !strings.HasSuffix(msg, "\n") {
+			msg += "\n"
+		}
+		fmt.Fprint(os.Stderr, msg)
+	}
+	os.Exit(code)
+}
+
+// ErrExit may be passed to CheckError to instruct it to output nothing but exit with
+// status code 1.
+var ErrExit = fmt.Errorf("exit")
+
+// CheckErr prints a user friendly error to STDERR and exits with a non-zero
+// exit code. Unrecognized errors will be printed with an "error: " prefix.
+//
+// This method is generic to the command in use and may be used by non-Kubectl
+// commands.
+func CheckErr(err error) {
+	checkErr(err, fatalErrHandler)
+}
+
+// CheckDiffErr prints a user friendly error to STDERR and exits with a
+// non-zero and non-one exit code. Unrecognized errors will be printed
+// with an "error: " prefix.
+//
+// This method is meant specifically for `kubectl diff` and may be used
+// by other commands.
+func CheckDiffErr(err error) {
+	checkErr(err, func(msg string, code int) {
+		fatalErrHandler(msg, code+1)
+	})
+}
+
+// checkErr formats a given error as a string and calls the passed handleErr
+// func with that string and an kubectl exit code.
+func checkErr(err error, handleErr func(string, int)) {
+	// unwrap aggregates of 1
+	if agg, ok := err.(utilerrors.Aggregate); ok && len(agg.Errors()) == 1 {
+		err = agg.Errors()[0]
+	}
+
+	if err == nil {
+		return
+	}
+
+	switch {
+	case err == ErrExit:
+		handleErr("", DefaultErrorExitCode)
+	case apierrors.IsInvalid(err):
+		details := err.(*apierrors.StatusError).Status().Details
+		s := "The request is invalid"
+		if details == nil {
+			handleErr(s, DefaultErrorExitCode)
+			return
+		}
+		if len(details.Kind) != 0 || len(details.Name) != 0 {
+			s = fmt.Sprintf("The %s %q is invalid", details.Kind, details.Name)
+		}
+		if len(details.Causes) > 0 {
+			errs := statusCausesToAggrError(details.Causes)
+			handleErr(MultilineError(s+": ", errs), DefaultErrorExitCode)
+		} else {
+			handleErr(s, DefaultErrorExitCode)
+		}
+	case clientcmd.IsConfigurationInvalid(err):
+		handleErr(MultilineError("Error in configuration: ", err), DefaultErrorExitCode)
+	default:
+		switch err := err.(type) {
+		case *meta.NoResourceMatchError:
+			switch {
+			case len(err.PartialResource.Group) > 0 && len(err.PartialResource.Version) > 0:
+				handleErr(fmt.Sprintf("the server doesn't have a resource type %q in group %q and version %q", err.PartialResource.Resource, err.PartialResource.Group, err.PartialResource.Version), DefaultErrorExitCode)
+			case len(err.PartialResource.Group) > 0:
+				handleErr(fmt.Sprintf("the server doesn't have a resource type %q in group %q", err.PartialResource.Resource, err.PartialResource.Group), DefaultErrorExitCode)
+			case len(err.PartialResource.Version) > 0:
+				handleErr(fmt.Sprintf("the server doesn't have a resource type %q in version %q", err.PartialResource.Resource, err.PartialResource.Version), DefaultErrorExitCode)
+			default:
+				handleErr(fmt.Sprintf("the server doesn't have a resource type %q", err.PartialResource.Resource), DefaultErrorExitCode)
+			}
+		case utilerrors.Aggregate:
+			handleErr(MultipleErrors(``, err.Errors()), DefaultErrorExitCode)
+		case utilexec.ExitError:
+			handleErr(err.Error(), err.ExitStatus())
+		default: // for any other error type
+			msg, ok := StandardErrorMessage(err)
+			if !ok {
+				msg = err.Error()
+				if !strings.HasPrefix(msg, "error: ") {
+					msg = fmt.Sprintf("error: %s", msg)
+				}
+			}
+			handleErr(msg, DefaultErrorExitCode)
+		}
+	}
+}
+
+func statusCausesToAggrError(scs []metav1.StatusCause) utilerrors.Aggregate {
+	errs := make([]error, 0, len(scs))
+	errorMsgs := sets.NewString()
+	for _, sc := range scs {
+		// check for duplicate error messages and skip them
+		msg := fmt.Sprintf("%s: %s", sc.Field, sc.Message)
+		if errorMsgs.Has(msg) {
+			continue
+		}
+		errorMsgs.Insert(msg)
+		errs = append(errs, errors.New(msg))
+	}
+	return utilerrors.NewAggregate(errs)
+}
+
+// StandardErrorMessage translates common errors into a human readable message, or returns
+// false if the error is not one of the recognized types. It may also log extended
+// information to klog.
+//
+// This method is generic to the command in use and may be used by non-Kubectl
+// commands.
+func StandardErrorMessage(err error) (string, bool) {
+	if debugErr, ok := err.(debugError); ok {
+		klog.V(4).Infof(debugErr.DebugError())
+	}
+	status, isStatus := err.(apierrors.APIStatus)
+	switch {
+	case isStatus:
+		switch s := status.Status(); {
+		case s.Reason == metav1.StatusReasonUnauthorized:
+			return fmt.Sprintf("error: You must be logged in to the server (%s)", s.Message), true
+		case len(s.Reason) > 0:
+			return fmt.Sprintf("Error from server (%s): %s", s.Reason, err.Error()), true
+		default:
+			return fmt.Sprintf("Error from server: %s", err.Error()), true
+		}
+	case apierrors.IsUnexpectedObjectError(err):
+		return fmt.Sprintf("Server returned an unexpected response: %s", err.Error()), true
+	}
+	switch t := err.(type) {
+	case *url.Error:
+		klog.V(4).Infof("Connection error: %s %s: %v", t.Op, t.URL, t.Err)
+		switch {
+		case strings.Contains(t.Err.Error(), "connection refused"):
+			host := t.URL
+			if server, err := url.Parse(t.URL); err == nil {
+				host = server.Host
+			}
+			return fmt.Sprintf("The connection to the server %s was refused - did you specify the right host or port?", host), true
+		}
+		return fmt.Sprintf("Unable to connect to the server: %v", t.Err), true
+	}
+	return "", false
+}
+
+// MultilineError returns a string representing an error that splits sub errors into their own
+// lines. The returned string will end with a newline.
+func MultilineError(prefix string, err error) string {
+	if agg, ok := err.(utilerrors.Aggregate); ok {
+		errs := utilerrors.Flatten(agg).Errors()
+		buf := &bytes.Buffer{}
+		switch len(errs) {
+		case 0:
+			return fmt.Sprintf("%s%v\n", prefix, err)
+		case 1:
+			return fmt.Sprintf("%s%v\n", prefix, messageForError(errs[0]))
+		default:
+			fmt.Fprintln(buf, prefix)
+			for _, err := range errs {
+				fmt.Fprintf(buf, "* %v\n", messageForError(err))
+			}
+			return buf.String()
+		}
+	}
+	return fmt.Sprintf("%s%s\n", prefix, err)
+}
+
+// PrintErrorWithCauses prints an error's kind, name, and each of the error's causes in a new line.
+// The returned string will end with a newline.
+// Returns true if a case exists to handle the error type, or false otherwise.
+func PrintErrorWithCauses(err error, errOut io.Writer) bool {
+	switch t := err.(type) {
+	case *apierrors.StatusError:
+		errorDetails := t.Status().Details
+		if errorDetails != nil {
+			fmt.Fprintf(errOut, "error: %s %q is invalid\n\n", errorDetails.Kind, errorDetails.Name)
+			for _, cause := range errorDetails.Causes {
+				fmt.Fprintf(errOut, "* %s: %s\n", cause.Field, cause.Message)
+			}
+			return true
+		}
+	}
+
+	fmt.Fprintf(errOut, "error: %v\n", err)
+	return false
+}
+
+// MultipleErrors returns a newline delimited string containing
+// the prefix and referenced errors in standard form.
+func MultipleErrors(prefix string, errs []error) string {
+	buf := &bytes.Buffer{}
+	for _, err := range errs {
+		fmt.Fprintf(buf, "%s%v\n", prefix, messageForError(err))
+	}
+	return buf.String()
+}
+
+// messageForError returns the string representing the error.
+func messageForError(err error) string {
+	msg, ok := StandardErrorMessage(err)
+	if !ok {
+		msg = err.Error()
+	}
+	return msg
+}
+
+func UsageErrorf(cmd *cobra.Command, format string, args ...interface{}) error {
+	msg := fmt.Sprintf(format, args...)
+	return fmt.Errorf("%s\nSee '%s -h' for help and examples", msg, cmd.CommandPath())
+}
+
+func IsFilenameSliceEmpty(filenames []string, directory string) bool {
+	return len(filenames) == 0 && directory == ""
+}
+
+func GetFlagString(cmd *cobra.Command, flag string) string {
+	s, err := cmd.Flags().GetString(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return s
+}
+
+// GetFlagStringSlice can be used to accept multiple argument with flag repetition (e.g. -f arg1,arg2 -f arg3 ...)
+func GetFlagStringSlice(cmd *cobra.Command, flag string) []string {
+	s, err := cmd.Flags().GetStringSlice(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return s
+}
+
+// GetFlagStringArray can be used to accept multiple argument with flag repetition (e.g. -f arg1 -f arg2 ...)
+func GetFlagStringArray(cmd *cobra.Command, flag string) []string {
+	s, err := cmd.Flags().GetStringArray(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return s
+}
+
+func GetFlagBool(cmd *cobra.Command, flag string) bool {
+	b, err := cmd.Flags().GetBool(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return b
+}
+
+// Assumes the flag has a default value.
+func GetFlagInt(cmd *cobra.Command, flag string) int {
+	i, err := cmd.Flags().GetInt(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return i
+}
+
+// Assumes the flag has a default value.
+func GetFlagInt32(cmd *cobra.Command, flag string) int32 {
+	i, err := cmd.Flags().GetInt32(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return i
+}
+
+// Assumes the flag has a default value.
+func GetFlagInt64(cmd *cobra.Command, flag string) int64 {
+	i, err := cmd.Flags().GetInt64(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return i
+}
+
+func GetFlagDuration(cmd *cobra.Command, flag string) time.Duration {
+	d, err := cmd.Flags().GetDuration(flag)
+	if err != nil {
+		klog.Fatalf("error accessing flag %s for command %s: %v", flag, cmd.Name(), err)
+	}
+	return d
+}
+
+func GetPodRunningTimeoutFlag(cmd *cobra.Command) (time.Duration, error) {
+	timeout := GetFlagDuration(cmd, "pod-running-timeout")
+	if timeout <= 0 {
+		return timeout, fmt.Errorf("--pod-running-timeout must be higher than zero")
+	}
+	return timeout, nil
+}
+
+func AddValidateFlags(cmd *cobra.Command) {
+	cmd.Flags().Bool("validate", true, "If true, use a schema to validate the input before sending it")
+}
+
+func AddValidateOptionFlags(cmd *cobra.Command, options *ValidateOptions) {
+	cmd.Flags().BoolVar(&options.EnableValidation, "validate", options.EnableValidation, "If true, use a schema to validate the input before sending it")
+}
+
+func AddFilenameOptionFlags(cmd *cobra.Command, options *resource.FilenameOptions, usage string) {
+	AddJsonFilenameFlag(cmd.Flags(), &options.Filenames, "Filename, directory, or URL to files "+usage)
+	AddKustomizeFlag(cmd.Flags(), &options.Kustomize)
+	cmd.Flags().BoolVarP(&options.Recursive, "recursive", "R", options.Recursive, "Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory.")
+}
+
+func AddJsonFilenameFlag(flags *pflag.FlagSet, value *[]string, usage string) {
+	flags.StringSliceVarP(value, "filename", "f", *value, usage)
+	annotations := make([]string, 0, len(resource.FileExtensions))
+	for _, ext := range resource.FileExtensions {
+		annotations = append(annotations, strings.TrimLeft(ext, "."))
+	}
+	flags.SetAnnotation("filename", cobra.BashCompFilenameExt, annotations)
+}
+
+// AddKustomizeFlag adds kustomize flag to a command
+func AddKustomizeFlag(flags *pflag.FlagSet, value *string) {
+	flags.StringVarP(value, "kustomize", "k", *value, "Process the kustomization directory. This flag can't be used together with -f or -R.")
+}
+
+// AddDryRunFlag adds dry-run flag to a command. Usually used by mutations.
+func AddDryRunFlag(cmd *cobra.Command) {
+	cmd.Flags().String(
+		"dry-run",
+		"none",
+		`Must be "none", "server", or "client". If client strategy, only print the object that would be sent, without sending it. If server strategy, submit server-side request without persisting the resource.`,
+	)
+	cmd.Flags().Lookup("dry-run").NoOptDefVal = "unchanged"
+}
+
+func AddServerSideApplyFlags(cmd *cobra.Command) {
+	cmd.Flags().Bool("server-side", false, "If true, apply runs in the server instead of the client.")
+	cmd.Flags().Bool("force-conflicts", false, "If true, server-side apply will force the changes against conflicts.")
+	cmd.Flags().String("field-manager", "kubectl", "Name of the manager used to track field ownership.")
+}
+
+func AddPodRunningTimeoutFlag(cmd *cobra.Command, defaultTimeout time.Duration) {
+	cmd.Flags().Duration("pod-running-timeout", defaultTimeout, "The length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is running")
+}
+
+func AddApplyAnnotationFlags(cmd *cobra.Command) {
+	cmd.Flags().Bool(ApplyAnnotationsFlag, false, "If true, the configuration of current object will be saved in its annotation. Otherwise, the annotation will be unchanged. This flag is useful when you want to perform kubectl apply on this object in the future.")
+}
+
+func AddApplyAnnotationVarFlags(cmd *cobra.Command, applyAnnotation *bool) {
+	cmd.Flags().BoolVar(applyAnnotation, ApplyAnnotationsFlag, *applyAnnotation, "If true, the configuration of current object will be saved in its annotation. Otherwise, the annotation will be unchanged. This flag is useful when you want to perform kubectl apply on this object in the future.")
+}
+
+// AddGeneratorFlags adds flags common to resource generation commands
+// TODO: need to take a pass at other generator commands to use this set of flags
+func AddGeneratorFlags(cmd *cobra.Command, defaultGenerator string) {
+	cmd.Flags().String("generator", defaultGenerator, "The name of the API generator to use.")
+	cmd.Flags().MarkDeprecated("generator", "has no effect and will be removed in the future.")
+	AddDryRunFlag(cmd)
+}
+
+type ValidateOptions struct {
+	EnableValidation bool
+}
+
+// Merge requires JSON serialization
+// TODO: merge assumes JSON serialization, and does not properly abstract API retrieval
+func Merge(codec runtime.Codec, dst runtime.Object, fragment string) (runtime.Object, error) {
+	// encode dst into versioned json and apply fragment directly too it
+	target, err := runtime.Encode(codec, dst)
+	if err != nil {
+		return nil, err
+	}
+	patched, err := jsonpatch.MergePatch(target, []byte(fragment))
+	if err != nil {
+		return nil, err
+	}
+	out, err := runtime.Decode(codec, patched)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// DumpReaderToFile writes all data from the given io.Reader to the specified file
+// (usually for temporary use).
+func DumpReaderToFile(reader io.Reader, filename string) error {
+	f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	buffer := make([]byte, 1024)
+	for {
+		count, err := reader.Read(buffer)
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+		_, err = f.Write(buffer[:count])
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func GetServerSideApplyFlag(cmd *cobra.Command) bool {
+	return GetFlagBool(cmd, "server-side")
+}
+
+func GetForceConflictsFlag(cmd *cobra.Command) bool {
+	return GetFlagBool(cmd, "force-conflicts")
+}
+
+func GetFieldManagerFlag(cmd *cobra.Command) string {
+	return GetFlagString(cmd, "field-manager")
+}
+
+type DryRunStrategy int
+
+const (
+	DryRunNone DryRunStrategy = iota
+	DryRunClient
+	DryRunServer
+)
+
+func GetDryRunStrategy(cmd *cobra.Command) (DryRunStrategy, error) {
+	var dryRunFlag = GetFlagString(cmd, "dry-run")
+	b, err := strconv.ParseBool(dryRunFlag)
+	// The flag is not a boolean
+	if err != nil {
+		switch dryRunFlag {
+		case cmd.Flag("dry-run").NoOptDefVal:
+			klog.Warning(`--dry-run is deprecated and can be replaced with --dry-run=client.`)
+			return DryRunClient, nil
+		case "client":
+			return DryRunClient, nil
+		case "server":
+			return DryRunServer, nil
+		case "none":
+			return DryRunNone, nil
+		default:
+			return DryRunNone, fmt.Errorf(`Invalid dry-run value (%v). Must be "none", "server", or "client".`, dryRunFlag)
+		}
+	}
+	// The flag was a boolean
+	if b {
+		klog.Warningf(`--dry-run=%v is deprecated (boolean value) and can be replaced with --dry-run=%s.`, dryRunFlag, "client")
+		return DryRunClient, nil
+	}
+	klog.Warningf(`--dry-run=%v is deprecated (boolean value) and can be replaced with --dry-run=%s.`, dryRunFlag, "none")
+	return DryRunNone, nil
+}
+
+// PrintFlagsWithDryRunStrategy sets a success message at print time for the dry run strategy
+//
+// TODO(juanvallejo): This can be cleaned up even further by creating
+// a PrintFlags struct that binds the --dry-run flag, and whose
+// ToPrinter method returns a printer that understands how to print
+// this success message.
+func PrintFlagsWithDryRunStrategy(printFlags *genericclioptions.PrintFlags, dryRunStrategy DryRunStrategy) *genericclioptions.PrintFlags {
+	switch dryRunStrategy {
+	case DryRunClient:
+		printFlags.Complete("%s (dry run)")
+	case DryRunServer:
+		printFlags.Complete("%s (server dry run)")
+	}
+	return printFlags
+}
+
+// GetResourcesAndPairs retrieves resources and "KEY=VALUE or KEY-" pair args from given args
+func GetResourcesAndPairs(args []string, pairType string) (resources []string, pairArgs []string, err error) {
+	foundPair := false
+	for _, s := range args {
+		nonResource := (strings.Contains(s, "=") && s[0] != '=') || (strings.HasSuffix(s, "-") && s != "-")
+		switch {
+		case !foundPair && nonResource:
+			foundPair = true
+			fallthrough
+		case foundPair && nonResource:
+			pairArgs = append(pairArgs, s)
+		case !foundPair && !nonResource:
+			resources = append(resources, s)
+		case foundPair && !nonResource:
+			err = fmt.Errorf("all resources must be specified before %s changes: %s", pairType, s)
+			return
+		}
+	}
+	return
+}
+
+// ParsePairs retrieves new and remove pairs (if supportRemove is true) from "KEY=VALUE or KEY-" pair args
+func ParsePairs(pairArgs []string, pairType string, supportRemove bool) (newPairs map[string]string, removePairs []string, err error) {
+	newPairs = map[string]string{}
+	if supportRemove {
+		removePairs = []string{}
+	}
+	var invalidBuf bytes.Buffer
+	var invalidBufNonEmpty bool
+	for _, pairArg := range pairArgs {
+		if strings.Contains(pairArg, "=") && pairArg[0] != '=' {
+			parts := strings.SplitN(pairArg, "=", 2)
+			if len(parts) != 2 {
+				if invalidBufNonEmpty {
+					invalidBuf.WriteString(", ")
+				}
+				invalidBuf.WriteString(pairArg)
+				invalidBufNonEmpty = true
+			} else {
+				newPairs[parts[0]] = parts[1]
+			}
+		} else if supportRemove && strings.HasSuffix(pairArg, "-") && pairArg != "-" {
+			removePairs = append(removePairs, pairArg[:len(pairArg)-1])
+		} else {
+			if invalidBufNonEmpty {
+				invalidBuf.WriteString(", ")
+			}
+			invalidBuf.WriteString(pairArg)
+			invalidBufNonEmpty = true
+		}
+	}
+	if invalidBufNonEmpty {
+		err = fmt.Errorf("invalid %s format: %s", pairType, invalidBuf.String())
+		return
+	}
+
+	return
+}
+
+// IsSiblingCommandExists receives a pointer to a cobra command and a target string.
+// Returns true if the target string is found in the list of sibling commands.
+func IsSiblingCommandExists(cmd *cobra.Command, targetCmdName string) bool {
+	for _, c := range cmd.Parent().Commands() {
+		if c.Name() == targetCmdName {
+			return true
+		}
+	}
+
+	return false
+}
+
+// DefaultSubCommandRun prints a command's help string to the specified output if no
+// arguments (sub-commands) are provided, or a usage error otherwise.
+func DefaultSubCommandRun(out io.Writer) func(c *cobra.Command, args []string) {
+	return func(c *cobra.Command, args []string) {
+		c.SetOutput(out)
+		RequireNoArguments(c, args)
+		c.Help()
+		CheckErr(ErrExit)
+	}
+}
+
+// RequireNoArguments exits with a usage error if extra arguments are provided.
+func RequireNoArguments(c *cobra.Command, args []string) {
+	if len(args) > 0 {
+		CheckErr(UsageErrorf(c, "unknown command %q", strings.Join(args, " ")))
+	}
+}
+
+// StripComments will transform a YAML file into JSON, thus dropping any comments
+// in it. Note that if the given file has a syntax error, the transformation will
+// fail and we will manually drop all comments from the file.
+func StripComments(file []byte) []byte {
+	stripped := file
+	stripped, err := yaml.ToJSON(stripped)
+	if err != nil {
+		stripped = ManualStrip(file)
+	}
+	return stripped
+}
+
+// ManualStrip is used for dropping comments from a YAML file
+func ManualStrip(file []byte) []byte {
+	stripped := []byte{}
+	lines := bytes.Split(file, []byte("\n"))
+	for i, line := range lines {
+		if bytes.HasPrefix(bytes.TrimSpace(line), []byte("#")) {
+			continue
+		}
+		stripped = append(stripped, line...)
+		if i < len(lines)-1 {
+			stripped = append(stripped, '\n')
+		}
+	}
+	return stripped
+}
+
+// ScaleClientFunc provides a ScalesGetter
+type ScaleClientFunc func(genericclioptions.RESTClientGetter) (scale.ScalesGetter, error)
+
+// ScaleClientFn gives a way to easily override the function for unit testing if needed.
+var ScaleClientFn ScaleClientFunc = scaleClient
+
+// scaleClient gives you back scale getter
+func scaleClient(restClientGetter genericclioptions.RESTClientGetter) (scale.ScalesGetter, error) {
+	discoveryClient, err := restClientGetter.ToDiscoveryClient()
+	if err != nil {
+		return nil, err
+	}
+
+	clientConfig, err := restClientGetter.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+
+	setKubernetesDefaults(clientConfig)
+	restClient, err := rest.RESTClientFor(clientConfig)
+	if err != nil {
+		return nil, err
+	}
+	resolver := scale.NewDiscoveryScaleKindResolver(discoveryClient)
+	mapper, err := restClientGetter.ToRESTMapper()
+	if err != nil {
+		return nil, err
+	}
+
+	return scale.New(restClient, mapper, dynamic.LegacyAPIPathResolverFunc, resolver), nil
+}
+
+func Warning(cmdErr io.Writer, newGeneratorName, oldGeneratorName string) {
+	fmt.Fprintf(cmdErr, "WARNING: New generator %q specified, "+
+		"but it isn't available. "+
+		"Falling back to %q.\n",
+		newGeneratorName,
+		oldGeneratorName,
+	)
+}

vendor/k8s.io/kubectl/pkg/cmd/util/kubectl_match_version.go

@@ -0,0 +1,129 @@
+/*
+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 util
+
+import (
+	"sync"
+
+	"github.com/spf13/pflag"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/discovery"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/kubectl/pkg/scheme"
+
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/component-base/version"
+)
+
+const (
+	flagMatchBinaryVersion = "match-server-version"
+)
+
+// MatchVersionFlags is for setting the "match server version" function.
+type MatchVersionFlags struct {
+	Delegate genericclioptions.RESTClientGetter
+
+	RequireMatchedServerVersion bool
+	checkServerVersion          sync.Once
+	matchesServerVersionErr     error
+}
+
+var _ genericclioptions.RESTClientGetter = &MatchVersionFlags{}
+
+func (f *MatchVersionFlags) checkMatchingServerVersion() error {
+	f.checkServerVersion.Do(func() {
+		if !f.RequireMatchedServerVersion {
+			return
+		}
+		discoveryClient, err := f.Delegate.ToDiscoveryClient()
+		if err != nil {
+			f.matchesServerVersionErr = err
+			return
+		}
+		f.matchesServerVersionErr = discovery.MatchesServerVersion(version.Get(), discoveryClient)
+	})
+
+	return f.matchesServerVersionErr
+}
+
+// ToRESTConfig implements RESTClientGetter.
+// Returns a REST client configuration based on a provided path
+// to a .kubeconfig file, loading rules, and config flag overrides.
+// Expects the AddFlags method to have been called.
+func (f *MatchVersionFlags) ToRESTConfig() (*rest.Config, error) {
+	if err := f.checkMatchingServerVersion(); err != nil {
+		return nil, err
+	}
+	clientConfig, err := f.Delegate.ToRESTConfig()
+	if err != nil {
+		return nil, err
+	}
+	// TODO we should not have to do this.  It smacks of something going wrong.
+	setKubernetesDefaults(clientConfig)
+	return clientConfig, nil
+}
+
+func (f *MatchVersionFlags) ToRawKubeConfigLoader() clientcmd.ClientConfig {
+	return f.Delegate.ToRawKubeConfigLoader()
+}
+
+func (f *MatchVersionFlags) ToDiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
+	if err := f.checkMatchingServerVersion(); err != nil {
+		return nil, err
+	}
+	return f.Delegate.ToDiscoveryClient()
+}
+
+// ToRESTMapper returns a mapper.
+func (f *MatchVersionFlags) ToRESTMapper() (meta.RESTMapper, error) {
+	if err := f.checkMatchingServerVersion(); err != nil {
+		return nil, err
+	}
+	return f.Delegate.ToRESTMapper()
+}
+
+func (f *MatchVersionFlags) AddFlags(flags *pflag.FlagSet) {
+	flags.BoolVar(&f.RequireMatchedServerVersion, flagMatchBinaryVersion, f.RequireMatchedServerVersion, "Require server version to match client version")
+}
+
+func NewMatchVersionFlags(delegate genericclioptions.RESTClientGetter) *MatchVersionFlags {
+	return &MatchVersionFlags{
+		Delegate: delegate,
+	}
+}
+
+// setKubernetesDefaults sets default values on the provided client config for accessing the
+// Kubernetes API or returns an error if any of the defaults are impossible or invalid.
+// TODO this isn't what we want.  Each clientset should be setting defaults as it sees fit.
+func setKubernetesDefaults(config *rest.Config) error {
+	// TODO remove this hack.  This is allowing the GetOptions to be serialized.
+	config.GroupVersion = &schema.GroupVersion{Group: "", Version: "v1"}
+
+	if config.APIPath == "" {
+		config.APIPath = "/api"
+	}
+	if config.NegotiatedSerializer == nil {
+		// This codec factory ensures the resources are not converted. Therefore, resources
+		// will not be round-tripped through internal versions. Defaulting does not happen
+		// on the client.
+		config.NegotiatedSerializer = scheme.Codecs.WithoutConversion()
+	}
+	return rest.SetKubernetesDefaults(config)
+}

vendor/k8s.io/kubectl/pkg/cmd/util/printing.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2014 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 util
+
+import (
+	"fmt"
+
+	"k8s.io/kubectl/pkg/util/templates"
+)
+
+// SuggestAPIResources returns a suggestion to use the "api-resources" command
+// to retrieve a supported list of resources
+func SuggestAPIResources(parent string) string {
+	return templates.LongDesc(fmt.Sprintf("Use \"%s api-resources\" for a complete list of supported resources.", parent))
+}