func (f *factory) UnstructuredObject() (meta.RESTMapper, runtime.ObjectTyper, error) {
	cfg, err := f.clients.ClientConfigForVersion(nil)
	if err != nil {
		return nil, nil, err
	}

	dc, err := discovery.NewDiscoveryClientForConfig(cfg)
	if err != nil {
		return nil, nil, err
	}

	groupResources, err := discovery.GetAPIGroupResources(dc)
	if err != nil {
		return nil, nil, err
	}

	// Register unknown APIs as third party for now to make
	// validation happy. TODO perhaps make a dynamic schema
	// validator to avoid this.
	for _, group := range groupResources {
		for _, version := range group.Group.Versions {
			gv := unversioned.GroupVersion{Group: group.Group.Name, Version: version.Version}
			if !registered.IsRegisteredVersion(gv) {
				registered.AddThirdPartyAPIGroupVersions(gv)
			}
		}
	}

	mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructured)

	typer := discovery.NewUnstructuredObjectTyper(groupResources)

	return NewShortcutExpander(mapper, dc), typer, nil
}

// GetThirdPartyGroupVersions returns the thirdparty "group/versions"s and
// resources supported by the server. A user may delete a thirdparty resource
// when this function is running, so this function may return a "NotFound" error
// due to the race.
func GetThirdPartyGroupVersions(discovery discovery.DiscoveryInterface) ([]unversioned.GroupVersion, []unversioned.GroupVersionKind, error) {
	result := []unversioned.GroupVersion{}
	gvks := []unversioned.GroupVersionKind{}

	groupList, err := discovery.ServerGroups()
	if err != nil {
		// On forbidden or not found, just return empty lists.
		if kerrors.IsForbidden(err) || kerrors.IsNotFound(err) {
			return result, gvks, nil
		}

		return nil, nil, err
	}

	for ix := range groupList.Groups {
		group := &groupList.Groups[ix]
		for jx := range group.Versions {
			gv, err2 := unversioned.ParseGroupVersion(group.Versions[jx].GroupVersion)
			if err2 != nil {
				return nil, nil, err
			}
			// Skip GroupVersionKinds that have been statically registered.
			if registered.IsRegisteredVersion(gv) {
				continue
			}
			result = append(result, gv)

			resourceList, err := discovery.ServerResourcesForGroupVersion(group.Versions[jx].GroupVersion)
			if err != nil {
				return nil, nil, err
			}
			for kx := range resourceList.APIResources {
				gvks = append(gvks, gv.WithKind(resourceList.APIResources[kx].Kind))
			}
		}
	}
	return result, gvks, nil
}

// NewFactory creates an object that holds common methods across all OpenShift commands
func NewFactory(clientConfig kclientcmd.ClientConfig) *Factory {
	restMapper := registered.RESTMapper()

	clients := &clientCache{
		clients: make(map[string]*client.Client),
		configs: make(map[string]*restclient.Config),
		loader:  clientConfig,
	}

	w := &Factory{
		Factory:                cmdutil.NewFactory(clientConfig),
		OpenShiftClientConfig:  clientConfig,
		clients:                clients,
		ImageResolutionOptions: &imageResolutionOptions{},
	}

	w.Object = func(bool) (meta.RESTMapper, runtime.ObjectTyper) {
		defaultMapper := ShortcutExpander{RESTMapper: kubectl.ShortcutExpander{RESTMapper: restMapper}}
		defaultTyper := api.Scheme

		// Output using whatever version was negotiated in the client cache. The
		// version we decode with may not be the same as what the server requires.
		cfg, err := clients.ClientConfigForVersion(nil)
		if err != nil {
			return defaultMapper, defaultTyper
		}

		cmdApiVersion := unversioned.GroupVersion{}
		if cfg.GroupVersion != nil {
			cmdApiVersion = *cfg.GroupVersion
		}

		// at this point we've negotiated and can get the client
		oclient, err := clients.ClientForVersion(nil)
		if err != nil {
			return defaultMapper, defaultTyper
		}

		cacheDir := computeDiscoverCacheDir(filepath.Join(homedir.HomeDir(), ".kube"), cfg.Host)
		cachedDiscoverClient := NewCachedDiscoveryClient(client.NewDiscoveryClient(oclient.RESTClient), cacheDir, time.Duration(10*time.Minute))

		// if we can't find the server version or its too old to have Kind information in the discovery doc, skip the discovery RESTMapper
		// and use our hardcoded levels
		mapper := registered.RESTMapper()
		if serverVersion, err := cachedDiscoverClient.ServerVersion(); err == nil && useDiscoveryRESTMapper(serverVersion.GitVersion) {
			mapper = restmapper.NewDiscoveryRESTMapper(cachedDiscoverClient)
		}
		mapper = NewShortcutExpander(cachedDiscoverClient, kubectl.ShortcutExpander{RESTMapper: mapper})
		return kubectl.OutputVersionMapper{RESTMapper: mapper, OutputVersions: []unversioned.GroupVersion{cmdApiVersion}}, api.Scheme
	}

	w.UnstructuredObject = func() (meta.RESTMapper, runtime.ObjectTyper, error) {
		// load a discovery client from the default config
		cfg, err := clients.ClientConfigForVersion(nil)
		if err != nil {
			return nil, nil, err
		}
		dc, err := discovery.NewDiscoveryClientForConfig(cfg)
		if err != nil {
			return nil, nil, err
		}
		cacheDir := computeDiscoverCacheDir(filepath.Join(homedir.HomeDir(), ".kube"), cfg.Host)
		cachedDiscoverClient := NewCachedDiscoveryClient(client.NewDiscoveryClient(dc.RESTClient), cacheDir, time.Duration(10*time.Minute))

		// enumerate all group resources
		groupResources, err := discovery.GetAPIGroupResources(cachedDiscoverClient)
		if err != nil {
			return nil, nil, err
		}

		// Register unknown APIs as third party for now to make
		// validation happy. TODO perhaps make a dynamic schema
		// validator to avoid this.
		for _, group := range groupResources {
			for _, version := range group.Group.Versions {
				gv := unversioned.GroupVersion{Group: group.Group.Name, Version: version.Version}
				if !registered.IsRegisteredVersion(gv) {
					registered.AddThirdPartyAPIGroupVersions(gv)
				}
			}
		}

		// construct unstructured mapper and typer
		mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructured)
		typer := discovery.NewUnstructuredObjectTyper(groupResources)
		return NewShortcutExpander(cachedDiscoverClient, kubectl.ShortcutExpander{RESTMapper: mapper}), typer, nil
	}

	kClientForMapping := w.Factory.ClientForMapping
	w.ClientForMapping = func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
		if latest.OriginKind(mapping.GroupVersionKind) {
			mappingVersion := mapping.GroupVersionKind.GroupVersion()
			client, err := clients.ClientForVersion(&mappingVersion)
			if err != nil {
				return nil, err
			}
			return client.RESTClient, nil
		}
		return kClientForMapping(mapping)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
					continue
				}
				priorityRESTMapper.ResourcePriority = append(priorityRESTMapper.ResourcePriority, unversioned.GroupVersionResource{Group: group, Version: gvs[0].Version, Resource: meta.AnyResource})
				priorityRESTMapper.KindPriority = append(priorityRESTMapper.KindPriority, unversioned.GroupVersionKind{Group: group, Version: gvs[0].Version, Kind: meta.AnyKind})
			}
			for _, group := range groups {
				priorityRESTMapper.ResourcePriority = append(priorityRESTMapper.ResourcePriority, unversioned.GroupVersionResource{Group: group, Version: meta.AnyVersion, Resource: meta.AnyResource})
				priorityRESTMapper.KindPriority = append(priorityRESTMapper.KindPriority, unversioned.GroupVersionKind{Group: group, Version: meta.AnyVersion, Kind: meta.AnyKind})
			}
			return priorityRESTMapper, api.Scheme
		},
		UnstructuredObject: func() (meta.RESTMapper, runtime.ObjectTyper, error) {
			cfg, err := clients.ClientConfigForVersion(nil)
			if err != nil {
				return nil, nil, err
			}

			dc, err := discovery.NewDiscoveryClientForConfig(cfg)
			if err != nil {
				return nil, nil, err
			}

			groupResources, err := discovery.GetAPIGroupResources(dc)
			if err != nil {
				return nil, nil, err
			}

			// Register unknown APIs as third party for now to make
			// validation happy. TODO perhaps make a dynamic schema
			// validator to avoid this.
			for _, group := range groupResources {
				for _, version := range group.Group.Versions {
					gv := unversioned.GroupVersion{Group: group.Group.Name, Version: version.Version}
					if !registered.IsRegisteredVersion(gv) {
						registered.AddThirdPartyAPIGroupVersions(gv)
					}
				}
			}

			mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructured)

			typer := discovery.NewUnstructuredObjectTyper(groupResources)

			return kubectl.ShortcutExpander{RESTMapper: mapper}, typer, nil
		},
		RESTClient: func() (*restclient.RESTClient, error) {
			clientConfig, err := clients.ClientConfigForVersion(nil)
			if err != nil {
				return nil, err
			}
			return restclient.RESTClientFor(clientConfig)
		},
		ClientSet: func() (*internalclientset.Clientset, error) {
			return clients.ClientSetForVersion(nil)
		},
		ClientConfig: func() (*restclient.Config, error) {
			return clients.ClientConfigForVersion(nil)
		},
		ClientForMapping: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
			cfg, err := clientConfig.ClientConfig()
			if err != nil {
				return nil, err
			}
			if err := client.SetKubernetesDefaults(cfg); err != nil {
				return nil, err
			}

// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
	flags := pflag.NewFlagSet("", pflag.ContinueOnError)
	flags.SetNormalizeFunc(utilflag.WarnWordSepNormalizeFunc) // Warn for "_" flags

	clientConfig := optionalClientConfig
	if optionalClientConfig == nil {
		clientConfig = DefaultClientConfig(flags)
	}

	clients := NewClientCache(clientConfig)

	return &Factory{
		clients: clients,
		flags:   flags,

		Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
			cfg, err := clientConfig.ClientConfig()
			checkErrWithPrefix("failed to get client config: ", err)
			cmdApiVersion := unversioned.GroupVersion{}
			if cfg.GroupVersion != nil {
				cmdApiVersion = *cfg.GroupVersion
			}

			mapper := registered.RESTMapper()
			discoveryClient, err := discovery.NewDiscoveryClientForConfig(cfg)
			// if we can find the server version and it's current enough to have discovery information, use it.  Otherwise,
			// fallback to our hardcoded list
			if err == nil {
				if serverVersion, err := discoveryClient.ServerVersion(); err == nil && useDiscoveryRESTMapper(serverVersion.GitVersion) {
					// register third party resources with the api machinery groups.  This probably should be done, but
					// its consistent with old code, so we'll start with it.
					if err := registerThirdPartyResources(discoveryClient); err != nil {
						fmt.Fprintf(os.Stderr, "Unable to register third party resources: %v\n", err)
					}
					// ThirdPartyResourceData is special.  It's not discoverable, but needed for thirdparty resource listing
					// TODO eliminate this once we're truly generic.
					thirdPartyResourceDataMapper := meta.NewDefaultRESTMapper([]unversioned.GroupVersion{extensionsv1beta1.SchemeGroupVersion}, registered.InterfacesFor)
					thirdPartyResourceDataMapper.Add(extensionsv1beta1.SchemeGroupVersion.WithKind("ThirdPartyResourceData"), meta.RESTScopeNamespace)

					mapper = meta.FirstHitRESTMapper{
						MultiRESTMapper: meta.MultiRESTMapper{
							discovery.NewDeferredDiscoveryRESTMapper(discoveryClient, registered.InterfacesFor),
							thirdPartyResourceDataMapper,
						},
					}
				}
			}

			// wrap with shortcuts
			mapper = NewShortcutExpander(mapper, discoveryClient)
			// wrap with output preferences
			mapper = kubectl.OutputVersionMapper{RESTMapper: mapper, OutputVersions: []unversioned.GroupVersion{cmdApiVersion}}
			return mapper, api.Scheme
		},
		UnstructuredObject: func() (meta.RESTMapper, runtime.ObjectTyper, error) {
			cfg, err := clients.ClientConfigForVersion(nil)
			if err != nil {
				return nil, nil, err
			}

			dc, err := discovery.NewDiscoveryClientForConfig(cfg)
			if err != nil {
				return nil, nil, err
			}

			groupResources, err := discovery.GetAPIGroupResources(dc)
			if err != nil {
				return nil, nil, err
			}

			// Register unknown APIs as third party for now to make
			// validation happy. TODO perhaps make a dynamic schema
			// validator to avoid this.
			for _, group := range groupResources {
				for _, version := range group.Group.Versions {
					gv := unversioned.GroupVersion{Group: group.Group.Name, Version: version.Version}
					if !registered.IsRegisteredVersion(gv) {
						registered.AddThirdPartyAPIGroupVersions(gv)
					}
				}
			}

			mapper := discovery.NewRESTMapper(groupResources, meta.InterfacesForUnstructured)

			typer := discovery.NewUnstructuredObjectTyper(groupResources)

			return NewShortcutExpander(mapper, dc), typer, nil
		},
		RESTClient: func() (*restclient.RESTClient, error) {
			clientConfig, err := clients.ClientConfigForVersion(nil)
			if err != nil {
				return nil, err
			}
			return restclient.RESTClientFor(clientConfig)
		},
		ClientSet: func() (*internalclientset.Clientset, error) {
			return clients.ClientSetForVersion(nil)
//.........这里部分代码省略.........

// Merges the given defaultAPIResourceConfig with the given resourceConfigOverrides.
func mergeAPIResourceConfigs(defaultAPIResourceConfig *ResourceConfig, resourceConfigOverrides config.ConfigurationMap) (*ResourceConfig, error) {
	resourceConfig := defaultAPIResourceConfig
	overrides := resourceConfigOverrides

	// "api/all=false" allows users to selectively enable specific api versions.
	allAPIFlagValue, ok := overrides["api/all"]
	if ok && allAPIFlagValue == "false" {
		// Disable all group versions.
		for _, groupVersion := range registered.RegisteredGroupVersions() {
			if resourceConfig.AnyResourcesForVersionEnabled(groupVersion) {
				resourceConfig.DisableVersions(groupVersion)
			}
		}
	}

	// "api/legacy=false" allows users to disable legacy api versions.
	disableLegacyAPIs := false
	legacyAPIFlagValue, ok := overrides["api/legacy"]
	if ok && legacyAPIFlagValue == "false" {
		disableLegacyAPIs = true
	}
	_ = disableLegacyAPIs // hush the compiler while we don't have legacy APIs to disable.

	// "<resourceSpecifier>={true|false} allows users to enable/disable API.
	// This takes preference over api/all and api/legacy, if specified.
	// Iterate through all group/version overrides specified in runtimeConfig.
	for key := range overrides {
		if key == "api/all" || key == "api/legacy" {
			// Have already handled them above. Can skip them here.
			continue
		}
		tokens := strings.Split(key, "/")
		if len(tokens) != 2 {
			continue
		}
		groupVersionString := tokens[0] + "/" + tokens[1]
		// HACK: Hack for "v1" legacy group version.
		// Remove when we stop supporting the legacy group version.
		if groupVersionString == "api/v1" {
			groupVersionString = "v1"
		}
		groupVersion, err := unversioned.ParseGroupVersion(groupVersionString)
		if err != nil {
			return nil, fmt.Errorf("invalid key %s", key)
		}
		// Verify that the groupVersion is registered.
		if !registered.IsRegisteredVersion(groupVersion) {
			return nil, fmt.Errorf("group version %s that has not been registered", groupVersion.String())
		}
		enabled, err := getRuntimeConfigValue(overrides, key, false)
		if err != nil {
			return nil, err
		}
		if enabled {
			resourceConfig.EnableVersions(groupVersion)
		} else {
			resourceConfig.DisableVersions(groupVersion)
		}
	}

	// Iterate through all group/version/resource overrides specified in runtimeConfig.
	for key := range overrides {
		tokens := strings.Split(key, "/")
		if len(tokens) != 3 {
			continue
		}
		groupVersionString := tokens[0] + "/" + tokens[1]
		// HACK: Hack for "v1" legacy group version.
		// Remove when we stop supporting the legacy group version.
		if groupVersionString == "api/v1" {
			groupVersionString = "v1"
		}
		groupVersion, err := unversioned.ParseGroupVersion(groupVersionString)
		if err != nil {
			return nil, fmt.Errorf("invalid key %s", key)
		}
		resource := tokens[2]
		// Verify that the groupVersion is registered.
		if !registered.IsRegisteredVersion(groupVersion) {
			return nil, fmt.Errorf("group version %s that has not been registered", groupVersion.String())
		}

		if !resourceConfig.AnyResourcesForVersionEnabled(groupVersion) {
			return nil, fmt.Errorf("%v is disabled, you cannot configure its resources individually", groupVersion)
		}

		enabled, err := getRuntimeConfigValue(overrides, key, false)
		if err != nil {
			return nil, err
		}
		if enabled {
			resourceConfig.EnableResources(groupVersion.WithResource(resource))
		} else {
			resourceConfig.DisableResources(groupVersion.WithResource(resource))
		}
	}
	return resourceConfig, nil
}