Golang Client.Services方法代碼示例

// getServicePorts returns the po
func getServicePorts(kubeClient *unversioned.Client, ns, name string) (ports []string, err error) {
	var svc *api.Service
	glog.Infof("Waiting for %v/%v", ns, name)
	wait.Poll(1*time.Second, 5*time.Minute, func() (bool, error) {
		svc, err = kubeClient.Services(ns).Get(name)
		if err != nil {
			if glog.V(2) {
				glog.Errorf("%v", err)
			}
			return false, nil
		}

		for _, p := range svc.Spec.Ports {
			if p.Port != 0 {
				ports = append(ports, strconv.Itoa(p.Port))
				break
			}
		}

		glog.Infof("Ports for %v/%v : %v", ns, name, ports)
		return true, nil
	})

	return
}

func runServiceAndRCForResourceConsumer(c *client.Client, ns, name string, replicas int, cpuLimitMillis, memLimitMb int64) {
	By(fmt.Sprintf("Running consuming RC %s with %v replicas", name, replicas))
	_, err := c.Services(ns).Create(&api.Service{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ServiceSpec{
			Ports: []api.ServicePort{{
				Port:       port,
				TargetPort: util.NewIntOrStringFromInt(targetPort),
			}},

			Selector: map[string]string{
				"name": name,
			},
		},
	})
	expectNoError(err)
	config := RCConfig{
		Client:     c,
		Image:      resourceConsumerImage,
		Name:       name,
		Namespace:  ns,
		Timeout:    timeoutRC,
		Replicas:   replicas,
		CpuRequest: cpuLimitMillis,
		CpuLimit:   cpuLimitMillis,
		MemRequest: memLimitMb * 1024 * 1024, // MemLimit is in bytes
		MemLimit:   memLimitMb * 1024 * 1024,
	}
	expectNoError(RunRC(config))
	// Make sure endpoints are propagated.
	// TODO(piosz): replace sleep with endpoints watch.
	time.Sleep(10 * time.Second)
}

func openService(ns string, serviceName string, c *k8sclient.Client, printURL bool, retry bool) {
	if retry {
		if err := RetryAfter(40, func() error { return CheckService(ns, serviceName, c) }, 10*time.Second); err != nil {
			util.Errorf("Could not find finalized endpoint being pointed to by %s: %v", serviceName, err)
			os.Exit(1)
		}
	}
	svcs, err := c.Services(ns).List(kubeApi.ListOptions{})
	if err != nil {
		util.Errorf("No services found %v\n", err)
	}
	found := false
	for _, service := range svcs.Items {
		if serviceName == service.Name {

			url := service.ObjectMeta.Annotations[exposeURLAnnotation]

			if printURL {
				util.Successf("%s\n", url)
			} else {
				util.Successf("\nOpening URL %s\n", url)
				browser.OpenURL(url)
			}
			found = true
			break
		}
	}
	if !found {
		util.Errorf("No service %s in namespace %s\n", serviceName, ns)
	}
}

// Creates a replication controller that serves its hostname and a service on top of it.
func startServeHostnameService(c *client.Client, ns, name string, port, replicas int) ([]string, string, error) {
	podNames := make([]string, replicas)

	By("creating service " + name + " in namespace " + ns)
	_, err := c.Services(ns).Create(&api.Service{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ServiceSpec{
			Ports: []api.ServicePort{{
				Port:       port,
				TargetPort: util.NewIntOrStringFromInt(9376),
				Protocol:   "TCP",
			}},
			Selector: map[string]string{
				"name": name,
			},
		},
	})
	if err != nil {
		return podNames, "", err
	}

	var createdPods []*api.Pod
	maxContainerFailures := 0
	config := RCConfig{
		Client:               c,
		Image:                "gcr.io/google_containers/serve_hostname:1.1",
		Name:                 name,
		Namespace:            ns,
		PollInterval:         3 * time.Second,
		Timeout:              podReadyBeforeTimeout,
		Replicas:             replicas,
		CreatedPods:          &createdPods,
		MaxContainerFailures: &maxContainerFailures,
	}
	err = RunRC(config)
	if err != nil {
		return podNames, "", err
	}

	if len(createdPods) != replicas {
		return podNames, "", fmt.Errorf("Incorrect number of running pods: %v", len(createdPods))
	}

	for i := range createdPods {
		podNames[i] = createdPods[i].ObjectMeta.Name
	}
	sort.StringSlice(podNames).Sort()

	service, err := c.Services(ns).Get(name)
	if err != nil {
		return podNames, "", err
	}
	if service.Spec.ClusterIP == "" {
		return podNames, "", fmt.Errorf("Service IP is blank for %v", name)
	}
	serviceIP := service.Spec.ClusterIP
	return podNames, serviceIP, nil
}

func startService(c *client.Client, ns, name string, replicas int) {
	c.Services(ns).Create(&api.Service{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ServiceSpec{
			Ports: []api.ServicePort{{
				Port:       port,
				TargetPort: util.NewIntOrStringFromInt(targetPort),
			}},

			Selector: map[string]string{
				"name": name,
			},
		},
	})

	config := RCConfig{
		Client:    c,
		Image:     image,
		Name:      name,
		Namespace: ns,
		Timeout:   timeoutRC,
		Replicas:  replicas,
	}
	expectNoError(RunRC(config))
}

func createService(client *kubeclient.Client, meta kube.ObjectMeta, clusterIP string, dnsPort int) error {
	service := &kube.Service{
		ObjectMeta: meta,
		Spec: kube.ServiceSpec{
			ClusterIP: clusterIP,
			Ports: []kube.ServicePort{
				{
					Name:       "dns",
					Port:       53,
					TargetPort: intstr.FromInt(dnsPort),
					Protocol:   kube.ProtocolUDP,
				},
				{
					Name:       "dns-tcp",
					Port:       53,
					TargetPort: intstr.FromInt(dnsPort),
					Protocol:   kube.ProtocolTCP,
				},
			},
		},
	}

	_, err := client.Services(meta.Namespace).Create(service)
	if err != nil {
		return err
	}
	return nil
}

func runServiceAndRCForResourceConsumer(c *client.Client, ns, name string, replicas int, cpuLimitMillis, memLimitMb int64) {
	_, err := c.Services(ns).Create(&api.Service{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ServiceSpec{
			Ports: []api.ServicePort{{
				Port:       port,
				TargetPort: util.NewIntOrStringFromInt(targetPort),
			}},

			Selector: map[string]string{
				"name": name,
			},
		},
	})
	expectNoError(err)
	config := RCConfig{
		Client:    c,
		Image:     image,
		Name:      name,
		Namespace: ns,
		Timeout:   timeoutRC,
		Replicas:  replicas,
		CpuLimit:  cpuLimitMillis,
		MemLimit:  memLimitMb * 1024 * 1024, // MemLimit is in bytes
	}
	expectNoError(RunRC(config))
}

func getAppServices(kubeClient *client.Client) (*api.ServiceList, error) {
	serviceClient := kubeClient.Services(api.NamespaceAll)
	services, err := serviceClient.List(servicesSelector)
	if err != nil {
		return nil, err
	}
	return services, nil
}

func stopServeHostnameService(c *client.Client, ns, name string) error {
	if err := DeleteRC(c, ns, name); err != nil {
		return err
	}
	if err := c.Services(ns).Delete(name); err != nil {
		return err
	}
	return nil
}

func runServiceAndWorkloadForResourceConsumer(c *client.Client, ns, name, kind string, replicas int, cpuLimitMillis, memLimitMb int64) {
	By(fmt.Sprintf("Running consuming RC %s via %s with %v replicas", name, kind, replicas))
	_, err := c.Services(ns).Create(&api.Service{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.ServiceSpec{
			Ports: []api.ServicePort{{
				Port:       port,
				TargetPort: intstr.FromInt(targetPort),
			}},

			Selector: map[string]string{
				"name": name,
			},
		},
	})
	framework.ExpectNoError(err)

	rcConfig := framework.RCConfig{
		Client:     c,
		Image:      resourceConsumerImage,
		Name:       name,
		Namespace:  ns,
		Timeout:    timeoutRC,
		Replicas:   replicas,
		CpuRequest: cpuLimitMillis,
		CpuLimit:   cpuLimitMillis,
		MemRequest: memLimitMb * 1024 * 1024, // MemLimit is in bytes
		MemLimit:   memLimitMb * 1024 * 1024,
	}

	switch kind {
	case kindRC:
		framework.ExpectNoError(framework.RunRC(rcConfig))
		break
	case kindDeployment:
		dpConfig := framework.DeploymentConfig{
			RCConfig: rcConfig,
		}
		framework.ExpectNoError(framework.RunDeployment(dpConfig))
		break
	case kindReplicaSet:
		rsConfig := framework.ReplicaSetConfig{
			RCConfig: rcConfig,
		}
		framework.ExpectNoError(framework.RunReplicaSet(rsConfig))
		break
	default:
		framework.Failf(invalidKind)
	}

	// Make sure endpoints are propagated.
	// TODO(piosz): replace sleep with endpoints watch.
	time.Sleep(10 * time.Second)
}

func validateJenkinshiftService(c *k8sclient.Client, f *cmdutil.Factory) (Result, error) {
	ns, _, err := f.DefaultNamespace()
	if err != nil {
		return Failure, err
	}
	svc, err := c.Services(ns).Get("jenkinshift")
	if svc != nil {
		return Success, err
	}
	return Failure, err
}

func getAppServices(kubeClient *client.Client) (*api.ServiceList, error) {
	serviceClient := kubeClient.Services(api.NamespaceAll)
	servicesSelector, err := labels.Parse("routable==true")
	if err != nil {
		return nil, err
	}
	services, err := serviceClient.List(servicesSelector)
	if err != nil {
		return nil, err
	}
	return services, nil
}

// unsecuredRoute will return a route with enough info so that it can direct traffic to
// the service provided by --service. Callers of this helper are responsible for providing
// tls configuration, path, and the hostname of the route.
func unsecuredRoute(kc *kclient.Client, namespace, routeName, serviceName, portString string) (*api.Route, error) {
	if len(routeName) == 0 {
		routeName = serviceName
	}

	svc, err := kc.Services(namespace).Get(serviceName)
	if err != nil {
		if len(portString) == 0 {
			return nil, fmt.Errorf("you need to provide a route port via --port when exposing a non-existent service")
		}
		return &api.Route{
			ObjectMeta: kapi.ObjectMeta{
				Name: routeName,
			},
			Spec: api.RouteSpec{
				To: kapi.ObjectReference{
					Name: serviceName,
				},
				Port: resolveRoutePort(portString),
			},
		}, nil
	}

	ok, port := supportsTCP(svc)
	if !ok {
		return nil, fmt.Errorf("service %q doesn't support TCP", svc.Name)
	}

	route := &api.Route{
		ObjectMeta: kapi.ObjectMeta{
			Name:   routeName,
			Labels: svc.Labels,
		},
		Spec: api.RouteSpec{
			To: kapi.ObjectReference{
				Name: serviceName,
			},
		},
	}

	// If the service has multiple ports and the user didn't specify --port,
	// then default the route port to a service port name.
	if len(port.Name) > 0 && len(portString) == 0 {
		route.Spec.Port = resolveRoutePort(port.Name)
	}
	// --port uber alles
	if len(portString) > 0 {
		route.Spec.Port = resolveRoutePort(portString)
	}

	return route, nil
}

func deleteServices(c *k8sclient.Client, ns string, selector labels.Selector) error {
	services, err := c.Services(ns).List(api.ListOptions{LabelSelector: selector})
	if err != nil {
		return err
	}
	for _, s := range services.Items {
		err := c.Services(ns).Delete(s.Name)
		if err != nil {
			return errors.Wrap(err, fmt.Sprintf("failed to delete Service %s", s.Name))
		}
	}
	return nil
}

func isValidService(kubeClient *unversioned.Client, name string) error {
	if name == "" {
		return fmt.Errorf("empty string is not a valid service name")
	}

	parts := strings.Split(name, "/")
	if len(parts) != 2 {
		return fmt.Errorf("invalid name format (namespace/name) in service '%v'", name)
	}

	_, err := kubeClient.Services(parts[0]).Get(parts[1])
	return err
}