Golang schema.GroupVersionResource類代碼示例

// ResourceSingularizer implements RESTMapper
// It converts a resource name from plural to singular (e.g., from pods to pod)
func (m *DefaultRESTMapper) ResourceSingularizer(resourceType string) (string, error) {
	partialResource := schema.GroupVersionResource{Resource: resourceType}
	resources, err := m.ResourcesFor(partialResource)
	if err != nil {
		return resourceType, err
	}

	singular := schema.GroupVersionResource{}
	for _, curr := range resources {
		currSingular, ok := m.pluralToSingular[curr]
		if !ok {
			continue
		}
		if singular.Empty() {
			singular = currSingular
			continue
		}

		if currSingular.Resource != singular.Resource {
			return resourceType, fmt.Errorf("multiple possible singular resources (%v) found for %v", resources, resourceType)
		}
	}

	if singular.Empty() {
		return resourceType, fmt.Errorf("no singular of resource %v has been defined", resourceType)
	}

	return singular.Resource, nil
}

// coerceResourceForMatching makes the resource lower case and converts internal versions to unspecified (legacy behavior)
func coerceResourceForMatching(resource schema.GroupVersionResource) schema.GroupVersionResource {
	resource.Resource = strings.ToLower(resource.Resource)
	if resource.Version == runtime.APIVersionInternal {
		resource.Version = ""
	}

	return resource
}

func (gc *GarbageCollector) monitorFor(resource schema.GroupVersionResource, kind schema.GroupVersionKind) (monitor, error) {
	// TODO: consider store in one storage.
	glog.V(6).Infof("create storage for resource %s", resource)
	var monitor monitor
	client, err := gc.metaOnlyClientPool.ClientForGroupVersionKind(kind)
	if err != nil {
		return monitor, err
	}
	gc.registeredRateLimiterForMonitors.registerIfNotPresent(resource.GroupVersion(), client, "garbage_collector_monitoring")
	setObjectTypeMeta := func(obj interface{}) {
		runtimeObject, ok := obj.(runtime.Object)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("expected runtime.Object, got %#v", obj))
		}
		runtimeObject.GetObjectKind().SetGroupVersionKind(kind)
	}
	monitor.store, monitor.controller = cache.NewInformer(
		gcListWatcher(client, resource),
		nil,
		ResourceResyncTime,
		cache.ResourceEventHandlerFuncs{
			// add the event to the propagator's eventQueue.
			AddFunc: func(obj interface{}) {
				setObjectTypeMeta(obj)
				event := &event{
					eventType: addEvent,
					obj:       obj,
				}
				gc.propagator.eventQueue.Add(&workqueue.TimedWorkQueueItem{StartTime: gc.clock.Now(), Object: event})
			},
			UpdateFunc: func(oldObj, newObj interface{}) {
				setObjectTypeMeta(newObj)
				event := &event{updateEvent, newObj, oldObj}
				gc.propagator.eventQueue.Add(&workqueue.TimedWorkQueueItem{StartTime: gc.clock.Now(), Object: event})
			},
			DeleteFunc: func(obj interface{}) {
				// delta fifo may wrap the object in a cache.DeletedFinalStateUnknown, unwrap it
				if deletedFinalStateUnknown, ok := obj.(cache.DeletedFinalStateUnknown); ok {
					obj = deletedFinalStateUnknown.Obj
				}
				setObjectTypeMeta(obj)
				event := &event{
					eventType: deleteEvent,
					obj:       obj,
				}
				gc.propagator.eventQueue.Add(&workqueue.TimedWorkQueueItem{StartTime: gc.clock.Now(), Object: event})
			},
		},
	)
	return monitor, nil
}

// ForResource gives generic access to a shared informer of the matching type
// TODO extend this to unknown resources with a client pool
func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
	switch resource {
	// Group=Apiregistration, Version=InternalVersion
	case apiregistration.SchemeGroupVersion.WithResource("apiservices"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Apiregistration().InternalVersion().APIServices().Informer()}, nil

		// Group=Apiregistration, Version=V1alpha1
	case v1alpha1.SchemeGroupVersion.WithResource("apiservices"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Apiregistration().V1alpha1().APIServices().Informer()}, nil

	}

	return nil, fmt.Errorf("no informer found for %v", resource)
}

// expandResourceShortcut will return the expanded version of resource
// (something that a pkg/api/meta.RESTMapper can understand), if it is
// indeed a shortcut. Otherwise, will return resource unmodified.
func expandResourceShortcut(resource schema.GroupVersionResource) schema.GroupVersionResource {
	if expanded, ok := kubectl.ShortForms[resource.Resource]; ok {
		resource.Resource = expanded
		return resource
	}
	return resource
}

func (o *ResourceConfig) ResourceEnabled(resource schema.GroupVersionResource) bool {
	versionOverride, versionExists := o.GroupVersionResourceConfigs[resource.GroupVersion()]
	if !versionExists {
		return false
	}
	if !versionOverride.Enable {
		return false
	}

	if versionOverride.DisabledResources.Has(resource.Resource) {
		return false
	}

	if len(versionOverride.EnabledResources) > 0 {
		return versionOverride.EnabledResources.Has(resource.Resource)
	}

	return true
}

// estimateGrracefulTermination will estimate the graceful termination required for the specific entity in the namespace
func estimateGracefulTermination(kubeClient clientset.Interface, groupVersionResource schema.GroupVersionResource, ns string, namespaceDeletedAt metav1.Time) (int64, error) {
	groupResource := groupVersionResource.GroupResource()
	glog.V(5).Infof("namespace controller - estimateGracefulTermination - group %s, resource: %s", groupResource.Group, groupResource.Resource)
	estimate := int64(0)
	var err error
	switch groupResource {
	case schema.GroupResource{Group: "", Resource: "pods"}:
		estimate, err = estimateGracefulTerminationForPods(kubeClient, ns)
	}
	if err != nil {
		return estimate, err
	}
	// determine if the estimate is greater than the deletion timestamp
	duration := time.Since(namespaceDeletedAt.Time)
	allowedEstimate := time.Duration(estimate) * time.Second
	if duration >= allowedEstimate {
		estimate = int64(0)
	}
	return estimate, nil
}

// TODO turn this into reusable method checking available resources
func contains(resourcesList map[string]*unversioned.APIResourceList, resource schema.GroupVersionResource) bool {
	if resourcesList == nil {
		return false
	}
	resourcesGroup, ok := resourcesList[resource.GroupVersion().String()]
	if !ok {
		return false
	}
	for _, item := range resourcesGroup.APIResources {
		if resource.Resource == item.Name {
			return true
		}
	}
	return false
}

// TODO turn this into reusable method checking available resources
func contains(resourcesList []*metav1.APIResourceList, resource schema.GroupVersionResource) bool {
	resources := discovery.FilteredBy(discovery.ResourcePredicateFunc(func(gv string, r *metav1.APIResource) bool {
		return resource.GroupVersion().String() == gv && resource.Resource == r.Name
	}), resourcesList)
	return len(resources) != 0
}

// patchResource divides PatchResource for easier unit testing
func patchResource(
	ctx api.Context,
	admit updateAdmissionFunc,
	timeout time.Duration,
	versionedObj runtime.Object,
	patcher rest.Patcher,
	name string,
	patchType api.PatchType,
	patchJS []byte,
	namer ScopeNamer,
	copier runtime.ObjectCopier,
	resource schema.GroupVersionResource,
	codec runtime.Codec,
) (runtime.Object, error) {

	namespace := api.NamespaceValue(ctx)

	var (
		originalObjJS        []byte
		originalPatchedObjJS []byte
		lastConflictErr      error
	)

	// applyPatch is called every time GuaranteedUpdate asks for the updated object,
	// and is given the currently persisted object as input.
	applyPatch := func(_ api.Context, _, currentObject runtime.Object) (runtime.Object, error) {
		// Make sure we actually have a persisted currentObject
		if hasUID, err := hasUID(currentObject); err != nil {
			return nil, err
		} else if !hasUID {
			return nil, errors.NewNotFound(resource.GroupResource(), name)
		}

		switch {
		case len(originalObjJS) == 0 || len(originalPatchedObjJS) == 0:
			// first time through,
			// 1. apply the patch
			// 2. save the originalJS and patchedJS to detect whether there were conflicting changes on retries
			if js, err := runtime.Encode(codec, currentObject); err != nil {
				return nil, err
			} else {
				originalObjJS = js
			}

			if js, err := getPatchedJS(patchType, originalObjJS, patchJS, versionedObj); err != nil {
				return nil, err
			} else {
				originalPatchedObjJS = js
			}

			objToUpdate := patcher.New()
			if err := runtime.DecodeInto(codec, originalPatchedObjJS, objToUpdate); err != nil {
				return nil, err
			}
			if err := checkName(objToUpdate, name, namespace, namer); err != nil {
				return nil, err
			}
			return objToUpdate, nil

		default:
			// on a conflict,
			// 1. build a strategic merge patch from originalJS and the patchedJS.  Different patch types can
			//    be specified, but a strategic merge patch should be expressive enough handle them.  Build the
			//    patch with this type to handle those cases.
			// 2. build a strategic merge patch from originalJS and the currentJS
			// 3. ensure no conflicts between the two patches
			// 4. apply the #1 patch to the currentJS object
			currentObjectJS, err := runtime.Encode(codec, currentObject)
			if err != nil {
				return nil, err
			}
			currentPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, currentObjectJS, versionedObj)
			if err != nil {
				return nil, err
			}
			originalPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, originalPatchedObjJS, versionedObj)
			if err != nil {
				return nil, err
			}

			diff1 := make(map[string]interface{})
			if err := json.Unmarshal(originalPatch, &diff1); err != nil {
				return nil, err
			}
			diff2 := make(map[string]interface{})
			if err := json.Unmarshal(currentPatch, &diff2); err != nil {
				return nil, err
			}
			hasConflicts, err := strategicpatch.HasConflicts(diff1, diff2)
			if err != nil {
				return nil, err
			}
			if hasConflicts {
				glog.V(4).Infof("patchResource failed for resource %s, because there is a meaningful conflict.\n diff1=%v\n, diff2=%v\n", name, diff1, diff2)
				// Return the last conflict error we got if we have one
				if lastConflictErr != nil {
					return nil, lastConflictErr
				}
				// Otherwise manufacture one of our own
//.........這裏部分代碼省略.........

// ForResource gives generic access to a shared informer of the matching type
// TODO extend this to unknown resources with a client pool
func (f *sharedInformerFactory) ForResource(resource schema.GroupVersionResource) (GenericInformer, error) {
	switch resource {
	// Group=Apps, Version=InternalVersion
	case apps.SchemeGroupVersion.WithResource("statefulsets"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Apps().InternalVersion().StatefulSets().Informer()}, nil

		// Group=Apps, Version=V1beta1
	case v1beta1.SchemeGroupVersion.WithResource("statefulsets"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Apps().V1beta1().StatefulSets().Informer()}, nil

		// Group=Autoscaling, Version=InternalVersion
	case autoscaling.SchemeGroupVersion.WithResource("horizontalpodautoscalers"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Autoscaling().InternalVersion().HorizontalPodAutoscalers().Informer()}, nil

		// Group=Autoscaling, Version=V1
	case v1.SchemeGroupVersion.WithResource("horizontalpodautoscalers"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Autoscaling().V1().HorizontalPodAutoscalers().Informer()}, nil

		// Group=Batch, Version=InternalVersion
	case batch.SchemeGroupVersion.WithResource("cronjobs"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Batch().InternalVersion().CronJobs().Informer()}, nil
	case batch.SchemeGroupVersion.WithResource("jobs"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Batch().InternalVersion().Jobs().Informer()}, nil

		// Group=Batch, Version=V1
	case batch_v1.SchemeGroupVersion.WithResource("jobs"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Batch().V1().Jobs().Informer()}, nil

		// Group=Batch, Version=V2alpha1
	case v2alpha1.SchemeGroupVersion.WithResource("cronjobs"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Batch().V2alpha1().CronJobs().Informer()}, nil
	case v2alpha1.SchemeGroupVersion.WithResource("jobs"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Batch().V2alpha1().Jobs().Informer()}, nil

		// Group=Certificates, Version=InternalVersion
	case certificates.SchemeGroupVersion.WithResource("certificatesigningrequests"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Certificates().InternalVersion().CertificateSigningRequests().Informer()}, nil

		// Group=Certificates, Version=V1alpha1
	case v1alpha1.SchemeGroupVersion.WithResource("certificatesigningrequests"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Certificates().V1alpha1().CertificateSigningRequests().Informer()}, nil

		// Group=Core, Version=InternalVersion
	case api.SchemeGroupVersion.WithResource("componentstatuses"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().ComponentStatuses().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("configmaps"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().ConfigMaps().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("endpoints"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Endpoints().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("events"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Events().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("limitranges"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().LimitRanges().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("namespaces"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Namespaces().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("nodes"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Nodes().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("persistentvolumes"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().PersistentVolumes().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("persistentvolumeclaims"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().PersistentVolumeClaims().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("pods"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Pods().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("podtemplates"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().PodTemplates().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("replicationcontrollers"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().ReplicationControllers().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("resourcequotas"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().ResourceQuotas().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("secrets"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Secrets().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("services"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().Services().Informer()}, nil
	case api.SchemeGroupVersion.WithResource("serviceaccounts"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().InternalVersion().ServiceAccounts().Informer()}, nil

		// Group=Core, Version=V1
	case api_v1.SchemeGroupVersion.WithResource("componentstatuses"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().ComponentStatuses().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("configmaps"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().ConfigMaps().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("endpoints"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().Endpoints().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("events"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().Events().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("limitranges"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().LimitRanges().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("namespaces"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().Namespaces().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("nodes"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().Nodes().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("persistentvolumes"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().PersistentVolumes().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("persistentvolumeclaims"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().PersistentVolumeClaims().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("pods"):
		return &genericInformer{resource: resource.GroupResource(), informer: f.Core().V1().Pods().Informer()}, nil
	case api_v1.SchemeGroupVersion.WithResource("podtemplates"):
//.........這裏部分代碼省略.........