Golang Client.Post方法代码示例

func runSelfLinkTest(c *client.Client) {
	var svc api.Service
	err := c.Post().Resource("services").Body(
		&api.Service{
			ObjectMeta: api.ObjectMeta{
				Name: "selflinktest",
				Labels: map[string]string{
					"name": "selflinktest",
				},
			},
			Spec: api.ServiceSpec{
				Port: 12345,
				// This is here because validation requires it.
				Selector: map[string]string{
					"foo": "bar",
				},
			},
		},
	).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed creating selflinktest service: %v", err)
	}
	err = c.Get().AbsPath(svc.SelfLink).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed listing service with supplied self link '%v': %v", svc.SelfLink, err)
	}

	var svcList api.ServiceList
	err = c.Get().Resource("services").Do().Into(&svcList)
	if err != nil {
		glog.Fatalf("Failed listing services: %v", err)
	}

	err = c.Get().AbsPath(svcList.SelfLink).Do().Into(&svcList)
	if err != nil {
		glog.Fatalf("Failed listing services with supplied self link '%v': %v", svcList.SelfLink, err)
	}

	found := false
	for i := range svcList.Items {
		item := &svcList.Items[i]
		if item.Name != "selflinktest" {
			continue
		}
		found = true
		err = c.Get().AbsPath(item.SelfLink).Do().Into(&svc)
		if err != nil {
			glog.Fatalf("Failed listing service with supplied self link '%v': %v", item.SelfLink, err)
		}
		break
	}
	if !found {
		glog.Fatalf("never found selflinktest service")
	}
	glog.Infof("Self link test passed")

	// TODO: Should test PUT at some point, too.
}

// getContainerInfo contacts kubelet for the container informaton. The "Stats"
// in the returned ContainerInfo is subject to the requirements in statsRequest.
func getContainerInfo(c *client.Client, nodeName string, req *kubelet.StatsRequest) (map[string]cadvisor.ContainerInfo, error) {
	reqBody, err := json.Marshal(req)
	if err != nil {
		return nil, err
	}
	data, err := c.Post().
		Prefix("proxy").
		Resource("nodes").
		Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
		Suffix("stats/container").
		SetHeader("Content-Type", "application/json").
		Body(reqBody).
		Do().Raw()

	var containers map[string]cadvisor.ContainerInfo
	err = json.Unmarshal(data, &containers)
	if err != nil {
		return nil, err
	}
	return containers, nil
}

func runAtomicPutTest(c *client.Client) {
	var svc api.Service
	err := c.Post().Resource("services").Body(
		&api.Service{
			TypeMeta: api.TypeMeta{
				APIVersion: latest.Version,
			},
			ObjectMeta: api.ObjectMeta{
				Name: "atomicservice",
				Labels: map[string]string{
					"name": "atomicService",
				},
			},
			Spec: api.ServiceSpec{
				Port: 12345,
				// This is here because validation requires it.
				Selector: map[string]string{
					"foo": "bar",
				},
			},
		},
	).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed creating atomicService: %v", err)
	}
	glog.Info("Created atomicService")
	testLabels := labels.Set{
		"foo": "bar",
	}
	for i := 0; i < 5; i++ {
		// a: z, b: y, etc...
		testLabels[string([]byte{byte('a' + i)})] = string([]byte{byte('z' - i)})
	}
	var wg sync.WaitGroup
	wg.Add(len(testLabels))
	for label, value := range testLabels {
		go func(l, v string) {
			for {
				glog.Infof("Starting to update (%s, %s)", l, v)
				var tmpSvc api.Service
				err := c.Get().
					Resource("services").
					Name(svc.Name).
					Do().
					Into(&tmpSvc)
				if err != nil {
					glog.Errorf("Error getting atomicService: %v", err)
					continue
				}
				if tmpSvc.Spec.Selector == nil {
					tmpSvc.Spec.Selector = map[string]string{l: v}
				} else {
					tmpSvc.Spec.Selector[l] = v
				}
				glog.Infof("Posting update (%s, %s)", l, v)
				err = c.Put().Resource("services").Name(svc.Name).Body(&tmpSvc).Do().Error()
				if err != nil {
					if errors.IsConflict(err) {
						glog.Infof("Conflict: (%s, %s)", l, v)
						// This is what we expect.
						continue
					}
					glog.Errorf("Unexpected error putting atomicService: %v", err)
					continue
				}
				break
			}
			glog.Infof("Done update (%s, %s)", l, v)
			wg.Done()
		}(label, value)
	}
	wg.Wait()
	if err := c.Get().Resource("services").Name(svc.Name).Do().Into(&svc); err != nil {
		glog.Fatalf("Failed getting atomicService after writers are complete: %v", err)
	}
	if !reflect.DeepEqual(testLabels, labels.Set(svc.Spec.Selector)) {
		glog.Fatalf("Selector PUTs were not atomic: wanted %v, got %v", testLabels, svc.Spec.Selector)
	}
	glog.Info("Atomic PUTs work.")
}

func runAtomicPutTest(c *client.Client) {
	var svc api.Service
	err := c.Post().Path("services").Body(
		api.Service{
			JSONBase: api.JSONBase{ID: "atomicservice", APIVersion: "v1beta1"},
			Port:     12345,
			Labels: map[string]string{
				"name": "atomicService",
			},
			// This is here because validation requires it.
			Selector: map[string]string{
				"foo": "bar",
			},
		},
	).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed creating atomicService: %v", err)
	}
	glog.Info("Created atomicService")
	testLabels := labels.Set{
		"foo": "bar",
	}
	for i := 0; i < 5; i++ {
		// a: z, b: y, etc...
		testLabels[string([]byte{byte('a' + i)})] = string([]byte{byte('z' - i)})
	}
	var wg sync.WaitGroup
	wg.Add(len(testLabels))
	for label, value := range testLabels {
		go func(l, v string) {
			for {
				glog.Infof("Starting to update (%s, %s)", l, v)
				var tmpSvc api.Service
				err := c.Get().
					Path("services").
					Path(svc.ID).
					PollPeriod(100 * time.Millisecond).
					Do().
					Into(&tmpSvc)
				if err != nil {
					glog.Errorf("Error getting atomicService: %v", err)
					continue
				}
				if tmpSvc.Selector == nil {
					tmpSvc.Selector = map[string]string{l: v}
				} else {
					tmpSvc.Selector[l] = v
				}
				glog.Infof("Posting update (%s, %s)", l, v)
				err = c.Put().Path("services").Path(svc.ID).Body(&tmpSvc).Do().Error()
				if err != nil {
					if se, ok := err.(*client.StatusErr); ok {
						if se.Status.Code == http.StatusConflict {
							glog.Infof("Conflict: (%s, %s)", l, v)
							// This is what we expect.
							continue
						}
					}
					glog.Errorf("Unexpected error putting atomicService: %v", err)
					continue
				}
				break
			}
			glog.Infof("Done update (%s, %s)", l, v)
			wg.Done()
		}(label, value)
	}
	wg.Wait()
	if err := c.Get().Path("services").Path(svc.ID).Do().Into(&svc); err != nil {
		glog.Fatalf("Failed getting atomicService after writers are complete: %v", err)
	}
	if !reflect.DeepEqual(testLabels, labels.Set(svc.Selector)) {
		glog.Fatalf("Selector PUTs were not atomic: wanted %v, got %v", testLabels, svc.Selector)
	}
	glog.Info("Atomic PUTs work.")
}

func runPatchTest(c *client.Client) {
	name := "patchservice"
	resource := "services"
	var svc api.Service
	err := c.Post().Resource(resource).Body(
		&api.Service{
			TypeMeta: api.TypeMeta{
				APIVersion: latest.Version,
			},
			ObjectMeta: api.ObjectMeta{
				Name: name,
				Labels: map[string]string{
					"name": name,
				},
			},
			Spec: api.ServiceSpec{
				Port: 12345,
				// This is here because validation requires it.
				Selector: map[string]string{
					"foo": "bar",
				},
				Protocol:        "TCP",
				SessionAffinity: "None",
			},
		},
	).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed creating patchservice: %v", err)
	}
	if len(svc.Labels) != 1 {
		glog.Fatalf("Original length does not equal one")
	}

	// add label
	_, err = c.Patch().Resource(resource).Name(name).Body([]byte("{\"labels\":{\"foo\":\"bar\"}}")).Do().Get()
	if err != nil {
		glog.Fatalf("Failed updating patchservice: %v", err)
	}
	err = c.Get().Resource(resource).Name(name).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed getting patchservice: %v", err)
	}
	if len(svc.Labels) != 2 || svc.Labels["foo"] != "bar" {
		glog.Fatalf("Failed updating patchservice, labels are: %v", svc.Labels)
	}

	// remove one label
	_, err = c.Patch().Resource(resource).Name(name).Body([]byte("{\"labels\":{\"name\":null}}")).Do().Get()
	if err != nil {
		glog.Fatalf("Failed updating patchservice: %v", err)
	}
	err = c.Get().Resource(resource).Name(name).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed getting patchservice: %v", err)
	}
	if len(svc.Labels) != 1 || svc.Labels["foo"] != "bar" {
		glog.Fatalf("Failed updating patchservice, labels are: %v", svc.Labels)
	}

	// remove all labels
	_, err = c.Patch().Resource(resource).Name(name).Body([]byte("{\"labels\":null}")).Do().Get()
	if err != nil {
		glog.Fatalf("Failed updating patchservice: %v", err)
	}
	err = c.Get().Resource(resource).Name(name).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed getting patchservice: %v", err)
	}
	if svc.Labels != nil {
		glog.Fatalf("Failed remove all labels from patchservice: %v", svc.Labels)
	}

	glog.Info("PATCHs work.")
}

func runSelfLinkTestOnNamespace(c *client.Client, namespace string) {
	var svc api.Service
	err := c.Post().
		NamespaceIfScoped(namespace, len(namespace) > 0).
		Resource("services").Body(
		&api.Service{
			ObjectMeta: api.ObjectMeta{
				Name:      "selflinktest",
				Namespace: namespace,
				Labels: map[string]string{
					"name": "selflinktest",
				},
			},
			Spec: api.ServiceSpec{
				Port: 12345,
				// This is here because validation requires it.
				Selector: map[string]string{
					"foo": "bar",
				},
				Protocol:        "TCP",
				SessionAffinity: "None",
			},
		},
	).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed creating selflinktest service: %v", err)
	}
	// TODO: this is not namespace aware
	err = c.Get().RequestURI(svc.SelfLink).Do().Into(&svc)
	if err != nil {
		glog.Fatalf("Failed listing service with supplied self link '%v': %v", svc.SelfLink, err)
	}

	var svcList api.ServiceList
	err = c.Get().NamespaceIfScoped(namespace, len(namespace) > 0).Resource("services").Do().Into(&svcList)
	if err != nil {
		glog.Fatalf("Failed listing services: %v", err)
	}

	err = c.Get().RequestURI(svcList.SelfLink).Do().Into(&svcList)
	if err != nil {
		glog.Fatalf("Failed listing services with supplied self link '%v': %v", svcList.SelfLink, err)
	}

	found := false
	for i := range svcList.Items {
		item := &svcList.Items[i]
		if item.Name != "selflinktest" {
			continue
		}
		found = true
		err = c.Get().RequestURI(item.SelfLink).Do().Into(&svc)
		if err != nil {
			glog.Fatalf("Failed listing service with supplied self link '%v': %v", item.SelfLink, err)
		}
		break
	}
	if !found {
		glog.Fatalf("never found selflinktest service in namespace %s", namespace)
	}
	glog.Infof("Self link test passed in namespace %s", namespace)

	// TODO: Should test PUT at some point, too.
}