Golang labels.Everything函数代码示例

func (gcc *PodGCController) gc() {
	terminatedPods, _ := gcc.podStore.List(labels.Everything())
	terminatedPodCount := len(terminatedPods)
	sort.Sort(byCreationTimestamp(terminatedPods))

	deleteCount := terminatedPodCount - gcc.threshold

	if deleteCount > terminatedPodCount {
		deleteCount = terminatedPodCount
	}
	if deleteCount > 0 {
		glog.Infof("garbage collecting %v pods", deleteCount)
	}

	var wait sync.WaitGroup
	for i := 0; i < deleteCount; i++ {
		wait.Add(1)
		go func(namespace string, name string) {
			defer wait.Done()
			if err := gcc.deletePod(namespace, name); err != nil {
				// ignore not founds
				defer utilruntime.HandleError(err)
			}
		}(terminatedPods[i].Namespace, terminatedPods[i].Name)
	}
	wait.Wait()
}

func (c *FakeHorizontalPodAutoscalers) List(opts api.ListOptions) (*autoscaling.HorizontalPodAutoscalerList, error) {
	obj, err := c.Fake.Invokes(NewListAction("horizontalpodautoscalers", c.Namespace, opts), &autoscaling.HorizontalPodAutoscalerList{})
	if obj == nil {
		return nil, err
	}
	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &autoscaling.HorizontalPodAutoscalerList{}
	for _, a := range obj.(*autoscaling.HorizontalPodAutoscalerList).Items {
		if label.Matches(labels.Set(a.Labels)) {
			list.Items = append(list.Items, a)
		}
	}
	return list, err
}

func (c *FakePods) List(opts api.ListOptions) (*api.PodList, error) {
	obj, err := c.Fake.Invokes(NewListAction("pods", c.Namespace, opts), &api.PodList{})
	if obj == nil {
		return nil, err
	}
	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &api.PodList{}
	for _, pod := range obj.(*api.PodList).Items {
		if label.Matches(labels.Set(pod.Labels)) {
			list.Items = append(list.Items, pod)
		}
	}
	return list, err
}

func (c *FakePodSecurityPolicies) List(opts api.ListOptions) (result *extensions.PodSecurityPolicyList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewRootListAction(podsecuritypoliciesResource, opts), &extensions.PodSecurityPolicyList{})
	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &extensions.PodSecurityPolicyList{}
	for _, item := range obj.(*extensions.PodSecurityPolicyList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

// cleanupOrphanedPods deletes pods that are bound to nodes that don't
// exist.
func (nc *NodeController) cleanupOrphanedPods() {
	pods, err := nc.podStore.List(labels.Everything())
	if err != nil {
		utilruntime.HandleError(err)
		return
	}

	for _, pod := range pods {
		if pod.Spec.NodeName == "" {
			continue
		}
		if _, exists, _ := nc.nodeStore.Store.GetByKey(pod.Spec.NodeName); exists {
			continue
		}
		if err := nc.forcefullyDeletePod(pod); err != nil {
			utilruntime.HandleError(err)
		}
	}
}

func (c *FakeComponentStatuses) List(opts api.ListOptions) (result *api.ComponentStatusList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewRootListAction(componentstatusesResource, opts), &api.ComponentStatusList{})
	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &api.ComponentStatusList{}
	for _, item := range obj.(*api.ComponentStatusList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeThirdPartyResources) List(opts api.ListOptions) (result *v1beta1.ThirdPartyResourceList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewRootListAction(thirdpartyresourcesResource, opts), &v1beta1.ThirdPartyResourceList{})
	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1beta1.ThirdPartyResourceList{}
	for _, item := range obj.(*v1beta1.ThirdPartyResourceList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeServiceAccounts) List(opts api.ListOptions) (result *v1.ServiceAccountList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewListAction(serviceaccountsResource, c.ns, opts), &v1.ServiceAccountList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1.ServiceAccountList{}
	for _, item := range obj.(*v1.ServiceAccountList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func (c *FakeHorizontalPodAutoscalers) List(opts api.ListOptions) (result *v1beta1.HorizontalPodAutoscalerList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewListAction(horizontalpodautoscalersResource, c.ns, opts), &v1beta1.HorizontalPodAutoscalerList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &v1beta1.HorizontalPodAutoscalerList{}
	for _, item := range obj.(*v1beta1.HorizontalPodAutoscalerList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

func TestMatchNode(t *testing.T) {
	testFieldMap := map[bool][]fields.Set{
		true: {
			{"metadata.name": "foo"},
		},
		false: {
			{"foo": "bar"},
		},
	}

	for expectedResult, fieldSet := range testFieldMap {
		for _, field := range fieldSet {
			m := MatchNode(labels.Everything(), field.AsSelector())
			_, matchesSingle := m.MatchesSingle()
			if e, a := expectedResult, matchesSingle; e != a {
				t.Errorf("%+v: expected %v, got %v", fieldSet, e, a)
			}
		}
	}
}

func (c *FakePersistentVolumeClaims) List(opts api.ListOptions) (result *api.PersistentVolumeClaimList, err error) {
	obj, err := c.Fake.
		Invokes(core.NewListAction(persistentvolumeclaimsResource, c.ns, opts), &api.PersistentVolumeClaimList{})

	if obj == nil {
		return nil, err
	}

	label := opts.LabelSelector
	if label == nil {
		label = labels.Everything()
	}
	list := &api.PersistentVolumeClaimList{}
	for _, item := range obj.(*api.PersistentVolumeClaimList).Items {
		if label.Matches(labels.Set(item.Labels)) {
			list.Items = append(list.Items, item)
		}
	}
	return list, err
}

// ResourceTypeOrNameArgs indicates that the builder should accept arguments
// of the form `(<type1>[,<type2>,...]|<type> <name1>[,<name2>,...])`. When one argument is
// received, the types provided will be retrieved from the server (and be comma delimited).
// When two or more arguments are received, they must be a single type and resource name(s).
// The allowEmptySelector permits to select all the resources (via Everything func).
func (b *Builder) ResourceTypeOrNameArgs(allowEmptySelector bool, args ...string) *Builder {
	args = normalizeMultipleResourcesArgs(args)
	if ok, err := hasCombinedTypeArgs(args); ok {
		if err != nil {
			b.errs = append(b.errs, err)
			return b
		}
		for _, s := range args {
			tuple, ok, err := splitResourceTypeName(s)
			if err != nil {
				b.errs = append(b.errs, err)
				return b
			}
			if ok {
				b.resourceTuples = append(b.resourceTuples, tuple)
			}
		}
		return b
	}
	if len(args) > 0 {
		// Try replacing aliases only in types
		args[0] = b.replaceAliases(args[0])
	}
	switch {
	case len(args) > 2:
		b.names = append(b.names, args[1:]...)
		b.ResourceTypes(SplitResourceArgument(args[0])...)
	case len(args) == 2:
		b.names = append(b.names, args[1])
		b.ResourceTypes(SplitResourceArgument(args[0])...)
	case len(args) == 1:
		b.ResourceTypes(SplitResourceArgument(args[0])...)
		if b.selector == nil && allowEmptySelector {
			b.selector = labels.Everything()
		}
	case len(args) == 0:
	default:
		b.errs = append(b.errs, fmt.Errorf("when passing arguments, must be resource or resource and name"))
	}
	return b
}

// LabelSelectorAsSelector converts the LabelSelector api type into a struct that implements
// labels.Selector
// Note: This function should be kept in sync with the selector methods in pkg/labels/selector.go
func LabelSelectorAsSelector(ps *LabelSelector) (labels.Selector, error) {
	if ps == nil {
		return labels.Nothing(), nil
	}
	if len(ps.MatchLabels)+len(ps.MatchExpressions) == 0 {
		return labels.Everything(), nil
	}
	selector := labels.NewSelector()
	for k, v := range ps.MatchLabels {
		r, err := labels.NewRequirement(k, labels.EqualsOperator, sets.NewString(v))
		if err != nil {
			return nil, err
		}
		selector = selector.Add(*r)
	}
	for _, expr := range ps.MatchExpressions {
		var op labels.Operator
		switch expr.Operator {
		case LabelSelectorOpIn:
			op = labels.InOperator
		case LabelSelectorOpNotIn:
			op = labels.NotInOperator
		case LabelSelectorOpExists:
			op = labels.ExistsOperator
		case LabelSelectorOpDoesNotExist:
			op = labels.DoesNotExistOperator
		default:
			return nil, fmt.Errorf("%q is not a valid pod selector operator", expr.Operator)
		}
		r, err := labels.NewRequirement(expr.Key, op, sets.NewString(expr.Values...))
		if err != nil {
			return nil, err
		}
		selector = selector.Add(*r)
	}
	return selector, nil
}

func TestWatchParamParsing(t *testing.T) {
	simpleStorage := &SimpleRESTStorage{}
	handler := handle(map[string]rest.Storage{
		"simples":     simpleStorage,
		"simpleroots": simpleStorage,
	})
	server := httptest.NewServer(handler)
	defer server.Close()

	dest, _ := url.Parse(server.URL)

	rootPath := "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/simples"
	namespacedPath := "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/namespaces/other/simpleroots"

	table := []struct {
		path            string
		rawQuery        string
		resourceVersion string
		labelSelector   string
		fieldSelector   string
		namespace       string
	}{
		{
			path:            rootPath,
			rawQuery:        "resourceVersion=1234",
			resourceVersion: "1234",
			labelSelector:   "",
			fieldSelector:   "",
			namespace:       api.NamespaceAll,
		}, {
			path:            rootPath,
			rawQuery:        "resourceVersion=314159&fieldSelector=Host%3D&labelSelector=name%3Dfoo",
			resourceVersion: "314159",
			labelSelector:   "name=foo",
			fieldSelector:   "Host=",
			namespace:       api.NamespaceAll,
		}, {
			path:            rootPath,
			rawQuery:        "fieldSelector=id%3dfoo&resourceVersion=1492",
			resourceVersion: "1492",
			labelSelector:   "",
			fieldSelector:   "id=foo",
			namespace:       api.NamespaceAll,
		}, {
			path:            rootPath,
			rawQuery:        "",
			resourceVersion: "",
			labelSelector:   "",
			fieldSelector:   "",
			namespace:       api.NamespaceAll,
		},
		{
			path:            namespacedPath,
			rawQuery:        "resourceVersion=1234",
			resourceVersion: "1234",
			labelSelector:   "",
			fieldSelector:   "",
			namespace:       "other",
		}, {
			path:            namespacedPath,
			rawQuery:        "resourceVersion=314159&fieldSelector=Host%3D&labelSelector=name%3Dfoo",
			resourceVersion: "314159",
			labelSelector:   "name=foo",
			fieldSelector:   "Host=",
			namespace:       "other",
		}, {
			path:            namespacedPath,
			rawQuery:        "fieldSelector=id%3dfoo&resourceVersion=1492",
			resourceVersion: "1492",
			labelSelector:   "",
			fieldSelector:   "id=foo",
			namespace:       "other",
		}, {
			path:            namespacedPath,
			rawQuery:        "",
			resourceVersion: "",
			labelSelector:   "",
			fieldSelector:   "",
			namespace:       "other",
		},
	}

	for _, item := range table {
		simpleStorage.requestedLabelSelector = labels.Everything()
		simpleStorage.requestedFieldSelector = fields.Everything()
		simpleStorage.requestedResourceVersion = "5" // Prove this is set in all cases
		simpleStorage.requestedResourceNamespace = ""
		dest.Path = item.path
		dest.RawQuery = item.rawQuery
		resp, err := http.Get(dest.String())
		if err != nil {
			t.Errorf("%v: unexpected error: %v", item.rawQuery, err)
			continue
		}
		resp.Body.Close()
		if e, a := item.namespace, simpleStorage.requestedResourceNamespace; e != a {
			t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)
		}
		if e, a := item.resourceVersion, simpleStorage.requestedResourceVersion; e != a {
			t.Errorf("%v: expected %v, got %v", item.rawQuery, e, a)
//.........这里部分代码省略.........

func (b *Builder) visitorResult() *Result {
	if len(b.errs) > 0 {
		return &Result{err: utilerrors.NewAggregate(b.errs)}
	}

	if b.selectAll {
		b.selector = labels.Everything()
	}

	// visit selectors
	if b.selector != nil {
		if len(b.names) != 0 {
			return &Result{err: fmt.Errorf("name cannot be provided when a selector is specified")}
		}
		if len(b.resourceTuples) != 0 {
			return &Result{err: fmt.Errorf("selectors and the all flag cannot be used when passing resource/name arguments")}
		}
		if len(b.resources) == 0 {
			return &Result{err: fmt.Errorf("at least one resource must be specified to use a selector")}
		}
		// empty selector has different error message for paths being provided
		if len(b.paths) != 0 {
			if b.selector.Empty() {
				return &Result{err: fmt.Errorf("when paths, URLs, or stdin is provided as input, you may not specify a resource by arguments as well")}
			} else {
				return &Result{err: fmt.Errorf("a selector may not be specified when path, URL, or stdin is provided as input")}
			}
		}
		mappings, err := b.resourceMappings()
		if err != nil {
			return &Result{err: err}
		}

		visitors := []Visitor{}
		for _, mapping := range mappings {
			client, err := b.mapper.ClientForMapping(mapping)
			if err != nil {
				return &Result{err: err}
			}
			selectorNamespace := b.namespace
			if mapping.Scope.Name() != meta.RESTScopeNameNamespace {
				selectorNamespace = ""
			}
			visitors = append(visitors, NewSelector(client, mapping, selectorNamespace, b.selector, b.export))
		}
		if b.continueOnError {
			return &Result{visitor: EagerVisitorList(visitors), sources: visitors}
		}
		return &Result{visitor: VisitorList(visitors), sources: visitors}
	}

	// visit items specified by resource and name
	if len(b.resourceTuples) != 0 {
		// if b.singular is false, this could be by default, so double-check length
		// of resourceTuples to determine if in fact it is singular or not
		isSingular := b.singular
		if !isSingular {
			isSingular = len(b.resourceTuples) == 1
		}

		if len(b.paths) != 0 {
			return &Result{singular: isSingular, err: fmt.Errorf("when paths, URLs, or stdin is provided as input, you may not specify a resource by arguments as well")}
		}
		if len(b.resources) != 0 {
			return &Result{singular: isSingular, err: fmt.Errorf("you may not specify individual resources and bulk resources in the same call")}
		}

		// retrieve one client for each resource
		mappings, err := b.resourceTupleMappings()
		if err != nil {
			return &Result{singular: isSingular, err: err}
		}
		clients := make(map[string]RESTClient)
		for _, mapping := range mappings {
			s := fmt.Sprintf("%s/%s", mapping.GroupVersionKind.GroupVersion().String(), mapping.Resource)
			if _, ok := clients[s]; ok {
				continue
			}
			client, err := b.mapper.ClientForMapping(mapping)
			if err != nil {
				return &Result{err: err}
			}
			clients[s] = client
		}

		items := []Visitor{}
		for _, tuple := range b.resourceTuples {
			mapping, ok := mappings[tuple.Resource]
			if !ok {
				return &Result{singular: isSingular, err: fmt.Errorf("resource %q is not recognized: %v", tuple.Resource, mappings)}
			}
			s := fmt.Sprintf("%s/%s", mapping.GroupVersionKind.GroupVersion().String(), mapping.Resource)
			client, ok := clients[s]
			if !ok {
				return &Result{singular: isSingular, err: fmt.Errorf("could not find a client for resource %q", tuple.Resource)}
			}

			selectorNamespace := b.namespace
			if mapping.Scope.Name() != meta.RESTScopeNameNamespace {
				selectorNamespace = ""
//.........这里部分代码省略.........