Golang schema.GroupVersionKind類代碼示例

func IsThirdPartyObject(rawData []byte, gvk *schema.GroupVersionKind) (isThirdParty bool, gvkOut *schema.GroupVersionKind, err error) {
	var gv schema.GroupVersion
	if gvk == nil {
		data, err := yaml.ToJSON(rawData)
		if err != nil {
			return false, nil, err
		}
		metadata := metav1.TypeMeta{}
		if err = json.Unmarshal(data, &metadata); err != nil {
			return false, nil, err
		}
		gv, err = schema.ParseGroupVersion(metadata.APIVersion)
		if err != nil {
			return false, nil, err
		}
		gvkOut = &schema.GroupVersionKind{
			Group:   gv.Group,
			Version: gv.Version,
			Kind:    metadata.Kind,
		}
	} else {
		gv = gvk.GroupVersion()
		gvkOut = gvk
	}
	return registered.IsThirdPartyAPIGroupVersion(gv), gvkOut, nil
}

// ClientForGroupVersion returns a client for the specified groupVersion, creates one if none exists. Kind
// in the GroupVersionKind may be empty.
func (c *clientPoolImpl) ClientForGroupVersionKind(kind schema.GroupVersionKind) (*Client, error) {
	c.lock.Lock()
	defer c.lock.Unlock()

	gv := kind.GroupVersion()

	// do we have a client already configured?
	if existingClient, found := c.clients[gv]; found {
		return existingClient, nil
	}

	// avoid changing the original config
	confCopy := *c.config
	conf := &confCopy

	// we need to set the api path based on group version, if no group, default to legacy path
	conf.APIPath = c.apiPathResolverFunc(kind)

	// we need to make a client
	conf.GroupVersion = &gv

	dynamicClient, err := NewClient(conf)
	if err != nil {
		return nil, err
	}
	c.clients[gv] = dynamicClient
	return dynamicClient, nil
}

// getResourceKind returns the external group version kind registered for the given storage
// object. If the storage object is a subresource and has an override supplied for it, it returns
// the group version kind supplied in the override.
func (a *APIInstaller) getResourceKind(path string, storage rest.Storage) (schema.GroupVersionKind, error) {
	if fqKindToRegister, ok := a.group.SubresourceGroupVersionKind[path]; ok {
		return fqKindToRegister, nil
	}

	object := storage.New()
	fqKinds, _, err := a.group.Typer.ObjectKinds(object)
	if err != nil {
		return schema.GroupVersionKind{}, err
	}

	// a given go type can have multiple potential fully qualified kinds.  Find the one that corresponds with the group
	// we're trying to register here
	fqKindToRegister := schema.GroupVersionKind{}
	for _, fqKind := range fqKinds {
		if fqKind.Group == a.group.GroupVersion.Group {
			fqKindToRegister = a.group.GroupVersion.WithKind(fqKind.Kind)
			break
		}

		// TODO This keeps it doing what it was doing before, but it doesn't feel right.
		if fqKind.Group == extensions.GroupName && fqKind.Kind == "ThirdPartyResourceData" {
			fqKindToRegister = a.group.GroupVersion.WithKind(fqKind.Kind)
		}
	}
	if fqKindToRegister.Empty() {
		return schema.GroupVersionKind{}, fmt.Errorf("unable to locate fully qualified kind for %v: found %v when registering for %v", reflect.TypeOf(object), fqKinds, a.group.GroupVersion)
	}
	return fqKindToRegister, nil
}

// checkNamespace makes sure that the scope of gvk matches ns. It
// returns an error if namespace is empty but gvk is a namespaced
// kind, or if ns is non-empty and gvk is a namespaced kind.
func checkNamespace(gvk schema.GroupVersionKind, ns string) error {
	group, err := registered.Group(gvk.Group)
	if err != nil {
		return err
	}
	mapping, err := group.RESTMapper.RESTMapping(gvk.GroupKind(), gvk.Version)
	if err != nil {
		return err
	}
	switch mapping.Scope.Name() {
	case meta.RESTScopeNameRoot:
		if ns != "" {
			return fmt.Errorf("namespace specified for a non-namespaced kind %s", gvk)
		}
	case meta.RESTScopeNameNamespace:
		if ns == "" {
			// Skipping this check for Events, since
			// controllers emit events that have no namespace,
			// even though Event is a namespaced resource.
			if gvk.Kind != "Event" {
				return fmt.Errorf("no namespace specified for a namespaced kind %s", gvk)
			}
		}
	}

	return nil
}

func (f *factory) SwaggerSchema(gvk schema.GroupVersionKind) (*swagger.ApiDeclaration, error) {
	version := gvk.GroupVersion()
	discovery, err := f.DiscoveryClient()
	if err != nil {
		return nil, err
	}
	return discovery.SwaggerSchema(version)
}

// RunExplain executes the appropriate steps to print a model's documentation
func RunExplain(f cmdutil.Factory, out, cmdErr io.Writer, cmd *cobra.Command, args []string) error {
	if len(args) == 0 {
		fmt.Fprint(cmdErr, "You must specify the type of resource to explain. ", valid_resources)
		return cmdutil.UsageError(cmd, "Required resource not specified.")
	}
	if len(args) > 1 {
		return cmdutil.UsageError(cmd, "We accept only this format: explain RESOURCE")
	}

	recursive := cmdutil.GetFlagBool(cmd, "recursive")
	apiVersionString := cmdutil.GetFlagString(cmd, "api-version")
	apiVersion := schema.GroupVersion{}

	mapper, _ := f.Object()
	// TODO: After we figured out the new syntax to separate group and resource, allow
	// the users to use it in explain (kubectl explain <group><syntax><resource>).
	// Refer to issue #16039 for why we do this. Refer to PR #15808 that used "/" syntax.
	inModel, fieldsPath, err := kubectl.SplitAndParseResourceRequest(args[0], mapper)
	if err != nil {
		return err
	}

	// TODO: We should deduce the group for a resource by discovering the supported resources at server.
	fullySpecifiedGVR, groupResource := schema.ParseResourceArg(inModel)
	gvk := schema.GroupVersionKind{}
	if fullySpecifiedGVR != nil {
		gvk, _ = mapper.KindFor(*fullySpecifiedGVR)
	}
	if gvk.Empty() {
		gvk, err = mapper.KindFor(groupResource.WithVersion(""))
		if err != nil {
			return err
		}
	}

	if len(apiVersionString) == 0 {
		groupMeta, err := registered.Group(gvk.Group)
		if err != nil {
			return err
		}
		apiVersion = groupMeta.GroupVersion

	} else {
		apiVersion, err = schema.ParseGroupVersion(apiVersionString)
		if err != nil {
			return nil
		}
	}

	schema, err := f.SwaggerSchema(apiVersion.WithKind(gvk.Kind))
	if err != nil {
		return err
	}

	return kubectl.PrintModelDescription(inModel, fieldsPath, out, schema, recursive)
}

// copyKindDefaults defaults dst to the value in src if dst does not have a value set.
func copyKindDefaults(dst, src *schema.GroupVersionKind) {
	if src == nil {
		return
	}
	// apply kind and version defaulting from provided default
	if len(dst.Kind) == 0 {
		dst.Kind = src.Kind
	}
	if len(dst.Version) == 0 && len(src.Version) > 0 {
		dst.Group = src.Group
		dst.Version = src.Version
	}
}

// mappingFor returns the RESTMapping for the Kind referenced by the resource.
// prefers a fully specified GroupVersionResource match.  If we don't have one match on GroupResource
func (b *Builder) mappingFor(resourceArg string) (*meta.RESTMapping, error) {
	fullySpecifiedGVR, groupResource := schema.ParseResourceArg(resourceArg)
	gvk := schema.GroupVersionKind{}
	if fullySpecifiedGVR != nil {
		gvk, _ = b.mapper.KindFor(*fullySpecifiedGVR)
	}
	if gvk.Empty() {
		var err error
		gvk, err = b.mapper.KindFor(groupResource.WithVersion(""))
		if err != nil {
			return nil, err
		}
	}

	return b.mapper.RESTMapping(gvk.GroupKind(), gvk.Version)
}

func doDeepCopyTest(t *testing.T, kind schema.GroupVersionKind, f *fuzz.Fuzzer) {
	item, err := api.Scheme.New(kind)
	if err != nil {
		t.Fatalf("Could not create a %v: %s", kind, err)
	}
	f.Fuzz(item)
	itemCopy, err := api.Scheme.DeepCopy(item)
	if err != nil {
		t.Errorf("Could not deep copy a %v: %s", kind, err)
		return
	}

	if !reflect.DeepEqual(item, itemCopy) {
		t.Errorf("\nexpected: %#v\n\ngot:      %#v\n\ndiff:      %v", item, itemCopy, diff.ObjectReflectDiff(item, itemCopy))
	}

	prefuzzData := &bytes.Buffer{}
	if err := api.Codecs.LegacyCodec(kind.GroupVersion()).Encode(item, prefuzzData); err != nil {
		t.Errorf("Could not encode a %v: %s", kind, err)
		return
	}

	// Refuzz the copy, which should have no effect on the original
	f.Fuzz(itemCopy)

	postfuzzData := &bytes.Buffer{}
	if err := api.Codecs.LegacyCodec(kind.GroupVersion()).Encode(item, postfuzzData); err != nil {
		t.Errorf("Could not encode a %v: %s", kind, err)
		return
	}

	if bytes.Compare(prefuzzData.Bytes(), postfuzzData.Bytes()) != 0 {
		t.Log(diff.StringDiff(prefuzzData.String(), postfuzzData.String()))
		t.Errorf("Fuzzing copy modified original of %#v", kind)
		return
	}
}

// KindToResource converts Kind to a resource name.
// Broken. This method only "sort of" works when used outside of this package.  It assumes that Kinds and Resources match
// and they aren't guaranteed to do so.
func KindToResource(kind schema.GroupVersionKind) ( /*plural*/ schema.GroupVersionResource /*singular*/, schema.GroupVersionResource) {
	kindName := kind.Kind
	if len(kindName) == 0 {
		return schema.GroupVersionResource{}, schema.GroupVersionResource{}
	}
	singularName := strings.ToLower(kindName)
	singular := kind.GroupVersion().WithResource(singularName)

	for _, skip := range unpluralizedSuffixes {
		if strings.HasSuffix(singularName, skip) {
			return singular, singular
		}
	}

	switch string(singularName[len(singularName)-1]) {
	case "s":
		return kind.GroupVersion().WithResource(singularName + "es"), singular
	case "y":
		return kind.GroupVersion().WithResource(strings.TrimSuffix(singularName, "y") + "ies"), singular
	}

	return kind.GroupVersion().WithResource(singularName + "s"), singular
}

func (t *thirdPartyResourceDataCreator) New(kind schema.GroupVersionKind) (out runtime.Object, err error) {
	switch kind.Kind {
	case "ThirdPartyResourceData":
		if apiutil.GetGroupVersion(t.group, t.version) != kind.GroupVersion().String() {
			return nil, fmt.Errorf("unknown kind %v", kind)
		}
		return &extensions.ThirdPartyResourceData{}, nil
	case "ThirdPartyResourceDataList":
		if apiutil.GetGroupVersion(t.group, t.version) != kind.GroupVersion().String() {
			return nil, fmt.Errorf("unknown kind %v", kind)
		}
		return &extensions.ThirdPartyResourceDataList{}, nil
	// TODO: this list needs to be formalized higher in the chain
	case "ListOptions", "WatchEvent":
		if apiutil.GetGroupVersion(t.group, t.version) == kind.GroupVersion().String() {
			// Translate third party group to external group.
			gvk := registered.EnabledVersionsForGroup(api.GroupName)[0].WithKind(kind.Kind)
			return t.delegate.New(gvk)
		}
		return t.delegate.New(kind)
	default:
		return t.delegate.New(kind)
	}
}

// SetGroupVersionKind satisfies the ObjectKind interface for all objects that embed TypeMeta
func (obj *TypeMeta) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}

func (obj *ExternalType2) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}

// RESTMapping returns a struct representing the resource path and conversion interfaces a
// RESTClient should use to operate on the provided group/kind in order of versions. If a version search
// order is not provided, the search order provided to DefaultRESTMapper will be used to resolve which
// version should be used to access the named group/kind.
// TODO: consider refactoring to use RESTMappings in a way that preserves version ordering and preference
func (m *DefaultRESTMapper) RESTMapping(gk schema.GroupKind, versions ...string) (*RESTMapping, error) {
	// Pick an appropriate version
	var gvk *schema.GroupVersionKind
	hadVersion := false
	for _, version := range versions {
		if len(version) == 0 || version == runtime.APIVersionInternal {
			continue
		}

		currGVK := gk.WithVersion(version)
		hadVersion = true
		if _, ok := m.kindToPluralResource[currGVK]; ok {
			gvk = &currGVK
			break
		}
	}
	// Use the default preferred versions
	if !hadVersion && (gvk == nil) {
		for _, gv := range m.defaultGroupVersions {
			if gv.Group != gk.Group {
				continue
			}

			currGVK := gk.WithVersion(gv.Version)
			if _, ok := m.kindToPluralResource[currGVK]; ok {
				gvk = &currGVK
				break
			}
		}
	}
	if gvk == nil {
		return nil, &NoKindMatchError{PartialKind: gk.WithVersion("")}
	}

	// Ensure we have a REST mapping
	resource, ok := m.kindToPluralResource[*gvk]
	if !ok {
		found := []schema.GroupVersion{}
		for _, gv := range m.defaultGroupVersions {
			if _, ok := m.kindToPluralResource[*gvk]; ok {
				found = append(found, gv)
			}
		}
		if len(found) > 0 {
			return nil, fmt.Errorf("object with kind %q exists in versions %v, not %v", gvk.Kind, found, gvk.GroupVersion().String())
		}
		return nil, fmt.Errorf("the provided version %q and kind %q cannot be mapped to a supported object", gvk.GroupVersion().String(), gvk.Kind)
	}

	// Ensure we have a REST scope
	scope, ok := m.kindToScope[*gvk]
	if !ok {
		return nil, fmt.Errorf("the provided version %q and kind %q cannot be mapped to a supported scope", gvk.GroupVersion().String(), gvk.Kind)
	}

	interfaces, err := m.interfacesFunc(gvk.GroupVersion())
	if err != nil {
		return nil, fmt.Errorf("the provided version %q has no relevant versions: %v", gvk.GroupVersion().String(), err)
	}

	retVal := &RESTMapping{
		Resource:         resource.Resource,
		GroupVersionKind: *gvk,
		Scope:            scope,

		ObjectConvertor:  interfaces.ObjectConvertor,
		MetadataAccessor: interfaces.MetadataAccessor,
	}

	return retVal, nil
}

func (obj *Config) SetGroupVersionKind(gvk schema.GroupVersionKind) {
	obj.APIVersion, obj.Kind = gvk.ToAPIVersionAndKind()
}