Golang meta.Name函數代碼示例

func NoNamespaceKeyFunc(prefix string, obj runtime.Object) (string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", err
	}
	name := meta.Name()
	if ok, msg := validation.IsValidPathSegmentName(name); !ok {
		return "", fmt.Errorf("invalid name: %v", msg)
	}
	return prefix + "/" + meta.Name(), nil
}

// MetaNamespaceKeyFunc is a convenient default KeyFunc which knows how to make
// keys for API objects which implement meta.Interface.
// The key uses the format <namespace>/<name> unless <namespace> is empty, then
// it's just <name>.
//
// TODO: replace key-as-string with a key-as-struct so that this
// packing/unpacking won't be necessary.
func MetaNamespaceKeyFunc(obj interface{}) (string, error) {
	if key, ok := obj.(ExplicitKey); ok {
		return string(key), nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", fmt.Errorf("object has no meta: %v", err)
	}
	if len(meta.Namespace()) > 0 {
		return meta.Namespace() + "/" + meta.Name(), nil
	}
	return meta.Name(), nil
}

// nameIndexFunc is an index function that indexes based on an object's name
func nameIndexFunc(obj interface{}) ([]string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return []string{""}, fmt.Errorf("object has no meta: %v", err)
	}
	return []string{meta.Name()}, nil
}

func NamespaceKeyFunc(prefix string, obj runtime.Object) (string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", err
	}
	return prefix + "/" + meta.Namespace() + "/" + meta.Name(), nil
}

// GetReference returns an ObjectReference which refers to the given
// object, or an error if the object doesn't follow the conventions
// that would allow this.
// TODO: should take a meta.Interface see https://github.com/GoogleCloudPlatform/kubernetes/issues/7127
func GetReference(obj runtime.Object) (*ObjectReference, error) {
	if obj == nil {
		return nil, ErrNilObject
	}
	if ref, ok := obj.(*ObjectReference); ok {
		// Don't make a reference to a reference.
		return ref, nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return nil, err
	}

	// if the object referenced is actually persisted, we can just get kind from meta
	// if we are building an object reference to something not yet persisted, we should fallback to scheme
	kind := meta.Kind()
	if kind == "" {
		_, kind, err = Scheme.ObjectVersionAndKind(obj)
		if err != nil {
			return nil, err
		}
	}

	// if the object referenced is actually persisted, we can also get version from meta
	version := meta.APIVersion()
	if version == "" {
		selfLink := meta.SelfLink()
		if selfLink == "" {
			if ForTesting_ReferencesAllowBlankSelfLinks {
				version = "testing"
			} else {
				return nil, ErrNoSelfLink
			}
		} else {
			selfLinkUrl, err := url.Parse(selfLink)
			if err != nil {
				return nil, err
			}
			// example paths: /<prefix>/<version>/*
			parts := strings.Split(selfLinkUrl.Path, "/")
			if len(parts) < 3 {
				return nil, fmt.Errorf("unexpected self link format: '%v'; got version '%v'", selfLink, version)
			}
			version = parts[2]
		}
	}

	return &ObjectReference{
		Kind:            kind,
		APIVersion:      version,
		Name:            meta.Name(),
		Namespace:       meta.Namespace(),
		UID:             meta.UID(),
		ResourceVersion: meta.ResourceVersion(),
	}, nil
}

//CreateObjList will create a list from the array of objects
func CreateObjList(prefix string, helper storage.Interface, items []runtime.Object) error {
	for i := range items {
		obj := items[i]
		meta, err := meta.Accessor(obj)
		if err != nil {
			return err
		}
		err = CreateObj(helper, path.Join(prefix, meta.Name()), obj, obj, 0)
		if err != nil {
			return err
		}
		items[i] = obj
	}
	return nil
}

// CreateList will properly create a list using the storage interface
func CreateList(t *testing.T, prefix string, helper storage.Interface, list runtime.Object) error {
	items, err := runtime.ExtractList(list)
	if err != nil {
		return err
	}
	for i := range items {
		obj := items[i]
		meta, err := meta.Accessor(obj)
		if err != nil {
			return err
		}
		err = CreateObj(t, helper, path.Join(prefix, meta.Name()), obj, obj, 0)
		if err != nil {
			return err
		}
		items[i] = obj
	}
	return runtime.SetList(list, items)
}