Ejemplo n.º 1
0
// makeImageStreamTagAdmissionUsageFunc returns a function that computes a resource usage for given image
// stream tag during admission.
func makeImageStreamTagAdmissionUsageFunc(isNamespacer osclient.ImageStreamsNamespacer) generic.UsageFunc {
	return func(object runtime.Object) kapi.ResourceList {
		ist, ok := object.(*imageapi.ImageStreamTag)
		if !ok {
			return kapi.ResourceList{}
		}

		res := map[kapi.ResourceName]resource.Quantity{
			imageapi.ResourceImageStreams: *resource.NewQuantity(0, resource.BinarySI),
		}

		isName, _, err := imageapi.ParseImageStreamTagName(ist.Name)
		if err != nil {
			utilruntime.HandleError(err)
			return kapi.ResourceList{}
		}

		is, err := isNamespacer.ImageStreams(ist.Namespace).Get(isName)
		if err != nil {
			if !kerrors.IsNotFound(err) {
				utilruntime.HandleError(fmt.Errorf("failed to get image stream %s/%s: %v", ist.Namespace, isName, err))
			}
		}
		if is == nil {
			res[imageapi.ResourceImageStreams] = *resource.NewQuantity(1, resource.BinarySI)
		}

		return res
	}
}
Ejemplo n.º 2
0
// nameAndTag splits a string into its name component and tag component, and returns an error
// if the string is not in the right form.
func nameAndTag(id string) (name string, tag string, err error) {
	name, tag, err = api.ParseImageStreamTagName(id)
	if err != nil {
		err = kapierrors.NewBadRequest("ImageStreamTags must be retrieved with <name>:<tag>")
	}
	return
}
Ejemplo n.º 3
0
// GetImageReferenceForObjectReference returns corresponding image reference for the given object
// reference representing either an image stream image or image stream tag or docker image.
func GetImageReferenceForObjectReference(namespace string, objRef *kapi.ObjectReference) (string, error) {
	switch objRef.Kind {
	case "ImageStreamImage", "DockerImage":
		res, err := imageapi.ParseDockerImageReference(objRef.Name)
		if err != nil {
			return "", err
		}

		if objRef.Kind == "ImageStreamImage" {
			if res.Namespace == "" {
				res.Namespace = objRef.Namespace
			}
			if res.Namespace == "" {
				res.Namespace = namespace
			}
			if len(res.ID) == 0 {
				return "", fmt.Errorf("missing id in ImageStreamImage reference %q", objRef.Name)
			}

		} else {
			// objRef.Kind == "DockerImage"
			res = res.DockerClientDefaults()
		}

		// docker image reference
		return res.DaemonMinimal().Exact(), nil

	case "ImageStreamTag":
		isName, tag, err := imageapi.ParseImageStreamTagName(objRef.Name)
		if err != nil {
			return "", err
		}

		ns := namespace
		if len(objRef.Namespace) > 0 {
			ns = objRef.Namespace
		}

		// <namespace>/<isname>:<tag>
		return cache.MetaNamespaceKeyFunc(&kapi.ObjectMeta{
			Namespace: ns,
			Name:      imageapi.JoinImageStreamTag(isName, tag),
		})
	}

	return "", fmt.Errorf("unsupported object reference kind %s", objRef.Kind)
}
// NewImageStreamTagEvaluator computes resource usage of ImageStreamsTags. Its sole purpose is to handle
// UPDATE admission operations on imageStreamTags resource.
func NewImageStreamTagEvaluator(istNamespacer osclient.ImageStreamTagsNamespacer, isNamespacer osclient.ImageStreamsNamespacer) kquota.Evaluator {
	computeResources := []kapi.ResourceName{
		imageapi.ResourceImageStreams,
	}

	matchesScopeFunc := func(kapi.ResourceQuotaScope, runtime.Object) bool { return true }
	getFuncByNamespace := func(namespace, id string) (runtime.Object, error) {
		isName, tag, err := imageapi.ParseImageStreamTagName(id)
		if err != nil {
			return nil, err
		}

		obj, err := istNamespacer.ImageStreamTags(namespace).Get(isName, tag)
		if err != nil {
			if !kerrors.IsNotFound(err) {
				return nil, err
			}
			obj = &imageapi.ImageStreamTag{
				ObjectMeta: kapi.ObjectMeta{
					Namespace: namespace,
					Name:      id,
				},
			}
		}
		return obj, nil
	}

	return &generic.GenericEvaluator{
		Name:              imageStreamTagEvaluatorName,
		InternalGroupKind: imageapi.Kind("ImageStreamTag"),
		InternalOperationResources: map[admission.Operation][]kapi.ResourceName{
			admission.Update: computeResources,
			admission.Create: computeResources,
		},
		MatchedResourceNames: computeResources,
		MatchesScopeFunc:     matchesScopeFunc,
		UsageFunc:            makeImageStreamTagAdmissionUsageFunc(isNamespacer),
		GetFuncByNamespace:   getFuncByNamespace,
		ListFuncByNamespace: func(namespace string, options kapi.ListOptions) (runtime.Object, error) {
			return &imageapi.ImageStreamTagList{}, nil
		},
		ConstraintsFunc: imageStreamTagConstraintsFunc,
	}
}