示例#1
0
func loadConfig() (*client.Config, error) {
	switch {
	case testContext.KubeConfig != "":
		fmt.Printf(">>> testContext.KubeConfig: %s\n", testContext.KubeConfig)
		c, err := clientcmd.LoadFromFile(testContext.KubeConfig)
		if err != nil {
			return nil, fmt.Errorf("error loading KubeConfig: %v", err.Error())
		}
		if testContext.KubeContext != "" {
			fmt.Printf(">>> testContext.KubeContext: %s\n", testContext.KubeContext)
			c.CurrentContext = testContext.KubeContext
		}
		return clientcmd.NewDefaultClientConfig(*c, &clientcmd.ConfigOverrides{}).ClientConfig()
	case testContext.AuthConfig != "":
		fmt.Printf(">>> testContext.AuthConfig: %s\n", testContext.AuthConfig)
		config := &client.Config{
			Host: testContext.Host,
		}
		info, err := clientauth.LoadFromFile(testContext.AuthConfig)
		if err != nil {
			return nil, fmt.Errorf("error loading AuthConfig: %v", err.Error())
		}
		// If the certificate directory is provided, set the cert paths to be there.
		if testContext.CertDir != "" {
			Logf("Expecting certs in %v.", testContext.CertDir)
			info.CAFile = filepath.Join(testContext.CertDir, "ca.crt")
			info.CertFile = filepath.Join(testContext.CertDir, "kubecfg.crt")
			info.KeyFile = filepath.Join(testContext.CertDir, "kubecfg.key")
		}
		mergedConfig, err := info.MergeWithConfig(*config)
		return &mergedConfig, err
	default:
		return nil, fmt.Errorf("either KubeConfig or AuthConfig must be specified to load client config")
	}
}
func TestSetWithPathPrefixIntoExistingStruct(t *testing.T) {
	expectedConfig := newRedFederalCowHammerConfig()
	cc := expectedConfig.Clusters["cow-clusters"]
	cinfo := &cc
	cinfo.Server = "http://cow.org:8080/foo/baz"
	expectedConfig.Clusters["cow-cluster"] = *cinfo
	test := configCommandTest{
		args:           []string{"set", "clusters.cow-cluster.server", "http://cow.org:8080/foo/baz"},
		startingConfig: newRedFederalCowHammerConfig(),
		expectedConfig: expectedConfig,
	}

	test.run(t)

	dc := clientcmd.NewDefaultClientConfig(expectedConfig, &clientcmd.ConfigOverrides{})
	dcc, err := dc.ClientConfig()
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	expectedHost := "http://cow.org:8080"
	if expectedHost != dcc.Host {
		t.Fatalf("expected client.Config.Host = %q instead of %q", expectedHost, dcc.Host)
	}
	expectedPrefix := "/foo/baz"
	if expectedPrefix != dcc.Prefix {
		t.Fatalf("expected client.Config.Prefix = %q instead of %q", expectedPrefix, dcc.Prefix)
	}
}
示例#3
0
func TestNewFactoryNoFlagBindings(t *testing.T) {
	clientConfig := clientcmd.NewDefaultClientConfig(*clientcmdapi.NewConfig(), &clientcmd.ConfigOverrides{})
	factory := NewFactory(clientConfig)

	if factory.flags.HasFlags() {
		t.Errorf("Expected zero flags, but got %v", factory.flags)
	}
}
示例#4
0
func clientFromConfig(path string) (*kclient.Config, string, error) {
	rules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: path}
	credentials, err := rules.Load()
	if err != nil {
		return nil, "", fmt.Errorf("the provided credentials %q could not be loaded: %v", path, err)
	}
	cfg := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{})
	config, err := cfg.ClientConfig()
	if err != nil {
		return nil, "", fmt.Errorf("the provided credentials %q could not be used: %v", path, err)
	}
	namespace, _ := cfg.Namespace()
	return config, namespace, nil
}
示例#5
0
func getKubeClient() (string, *kclient.Client, error) {
	c, err := kclientcmd.LoadFromFile(*kubeConfig)
	if err != nil {
		return "", nil, fmt.Errorf("error loading kubeConfig: %v", err.Error())
	}
	config, err := kclientcmd.NewDefaultClientConfig(
		*c,
		&kclientcmd.ConfigOverrides{
			ClusterInfo: kclientcmdapi.Cluster{
				APIVersion: "v1",
			},
		}).ClientConfig()
	if err != nil {
		return "", nil, fmt.Errorf("error parsing kubeConfig: %v", err.Error())
	}
	kubeClient, err := kclient.New(config)
	if err != nil {
		return "", nil, fmt.Errorf("error creating client - %q", err)
	}

	return c.Clusters[c.CurrentContext].Server, kubeClient, nil
}
//  Get kube client configuration from a file containing credentials for
//  connecting to the master.
func getClientConfig(path string) (*kclient.Config, error) {
	if 0 == len(path) {
		return nil, fmt.Errorf("You must specify a .kubeconfig file path containing credentials for connecting to the master with --credentials")
	}

	rules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: path, Precedence: []string{}}
	credentials, err := rules.Load()
	if err != nil {
		return nil, fmt.Errorf("Could not load credentials from %q: %v", path, err)
	}

	config, err := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{}).ClientConfig()
	if err != nil {
		return nil, fmt.Errorf("Credentials %q error: %v", path, err)
	}

	if err := kclient.LoadTLSFiles(config); err != nil {
		fmt.Errorf("Unable to load certificate info using credentials from %q: %v", path, err)
	}

	return config, nil
}
示例#7
0
func getKubeClient() (string, *kube_client.Client, error) {
	masterIP, err := getMasterIP()
	if err != nil {
		return "", nil, err
	}
	glog.V(1).Infof("Kubernetes master IP is %s", masterIP)

	c, err := clientcmd.LoadFromFile(*kubeConfig)
	if err != nil {
		return "", nil, fmt.Errorf("error loading kubeConfig: %v", err.Error())
	}
	config, err := clientcmd.NewDefaultClientConfig(*c, &clientcmd.ConfigOverrides{}).ClientConfig()
	if err != nil {
		return "", nil, fmt.Errorf("error parsing kubeConfig: %v", err.Error())
	}

	kubeClient, err := kube_client.New(config)
	if err != nil {
		return "", nil, fmt.Errorf("error creating client - %q", err)
	}

	return masterIP, kubeClient, nil
}
示例#8
0
文件: registry.go 项目: nstrug/origin
// RunCmdRegistry contains all the necessary functionality for the OpenShift cli registry command
func RunCmdRegistry(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RegistryConfig, args []string) error {
	var name string
	switch len(args) {
	case 0:
		name = "docker-registry"
	default:
		return cmdutil.UsageError(cmd, "No arguments are allowed to this command")
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		return err
	}

	label := map[string]string{
		"docker-registry": "default",
	}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, _, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	p, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing docker-registry %q: %v", name, err)
			}
			generate = true
		}
	}

	if generate {
		if cfg.DryRun && !output {
			return fmt.Errorf("docker-registry %q does not exist (no service).", name)
		}

		// create new registry
		if len(cfg.Credentials) == 0 {
			return fmt.Errorf("registry does not exist; you must specify a .kubeconfig file path containing credentials for connecting the registry to the master with --credentials")
		}
		clientConfigLoadingRules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: cfg.Credentials}
		credentials, err := clientConfigLoadingRules.Load()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be loaded: %v", cfg.Credentials, err)
		}
		config, err := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{}).ClientConfig()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be used: %v", cfg.Credentials, err)
		}
		if err := kclient.LoadTLSFiles(config); err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not load certificate info: %v", cfg.Credentials, err)
		}
		insecure := "false"
		if config.Insecure {
			insecure = "true"
		} else {
			if len(config.KeyData) == 0 || len(config.CertData) == 0 {
				return fmt.Errorf("registry does not exist; the provided credentials %q are missing the client certificate and/or key", cfg.Credentials)
			}
		}

		env := app.Environment{
			"OPENSHIFT_MASTER":    config.Host,
			"OPENSHIFT_CA_DATA":   string(config.CAData),
			"OPENSHIFT_KEY_DATA":  string(config.KeyData),
			"OPENSHIFT_CERT_DATA": string(config.CertData),
			"OPENSHIFT_INSECURE":  insecure,
		}

		mountHost := len(cfg.HostMount) > 0
		podTemplate := &kapi.PodTemplateSpec{
			ObjectMeta: kapi.ObjectMeta{Labels: label},
			Spec: kapi.PodSpec{
				ServiceAccountName: cfg.ServiceAccount,
				NodeSelector:       nodeSelector,
				Containers: []kapi.Container{
					{
						Name:  "registry",
						Image: image,
						Ports: ports,
						Env:   env.List(),
						VolumeMounts: []kapi.VolumeMount{
							{
								Name:      "registry-storage",
								MountPath: cfg.Volume,
							},
						},
						SecurityContext: &kapi.SecurityContext{
							Privileged: &mountHost,
						},
						// TODO reenable the liveness probe when we no longer support the v1 registry.
						/*
							LivenessProbe: &kapi.Probe{
								InitialDelaySeconds: 3,
								TimeoutSeconds:      5,
								Handler: kapi.Handler{
									HTTPGet: &kapi.HTTPGetAction{
										Path: "/healthz",
										Port: util.NewIntOrStringFromInt(5000),
									},
								},
							},
						*/
					},
				},
				Volumes: []kapi.Volume{
					{
						Name:         "registry-storage",
						VolumeSource: kapi.VolumeSource{},
					},
				},
			},
		}
		if mountHost {
			podTemplate.Spec.Volumes[0].HostPath = &kapi.HostPathVolumeSource{Path: cfg.HostMount}
		} else {
			podTemplate.Spec.Volumes[0].EmptyDir = &kapi.EmptyDirVolumeSource{}
		}

		objects := []runtime.Object{
			&dapi.DeploymentConfig{
				ObjectMeta: kapi.ObjectMeta{
					Name:   name,
					Labels: label,
				},
				Triggers: []dapi.DeploymentTriggerPolicy{
					{Type: dapi.DeploymentTriggerOnConfigChange},
				},
				Template: dapi.DeploymentTemplate{
					ControllerTemplate: kapi.ReplicationControllerSpec{
						Replicas: cfg.Replicas,
						Selector: label,
						Template: podTemplate,
					},
				},
			},
		}
		objects = app.AddServices(objects, true)
		// TODO: label all created objects with the same label
		list := &kapi.List{Items: objects}

		if output {
			if err := p.PrintObj(list, out); err != nil {
				return fmt.Errorf("unable to print object: %v", err)
			}
			return nil
		}

		mapper, typer := f.Factory.Object()
		bulk := configcmd.Bulk{
			Mapper:            mapper,
			Typer:             typer,
			RESTClientFactory: f.Factory.RESTClient,

			After: configcmd.NewPrintNameOrErrorAfter(out, os.Stderr),
		}
		if errs := bulk.Create(list, namespace); len(errs) != 0 {
			return errExit
		}
		return nil
	}

	fmt.Fprintf(out, "Docker registry %q service exists\n", name)
	return nil
}
示例#9
0
// Negotiate a bearer token with the auth server, or try to reuse one based on the
// information already present. In case of any missing information, ask for user input
// (usually username and password, interactive depending on the Reader).
func (o *LoginOptions) gatherAuthInfo() error {
	directClientConfig, err := o.getClientConfig()
	if err != nil {
		return err
	}

	// make a copy and use it to avoid mutating the original
	t := *directClientConfig
	clientConfig := &t

	// if a token were explicitly provided, try to use it
	if o.tokenProvided() {
		clientConfig.BearerToken = o.Token
		if osClient, err := client.New(clientConfig); err == nil {
			me, err := whoAmI(osClient)
			if err == nil {
				o.Username = me.Name
				o.Config = clientConfig

				fmt.Fprintf(o.Out, "Logged into %q as %q using the token provided.\n\n", o.Config.Host, o.Username)
				return nil
			}

			if !kerrors.IsUnauthorized(err) {
				return err
			}

			fmt.Fprintln(o.Out, "The token provided is invalid (probably expired).\n")
		}
	}

	// if a token was provided try to make use of it
	// make sure we have a username before continuing
	if !o.usernameProvided() {
		if cmdutil.IsTerminal(o.Reader) {
			for !o.usernameProvided() {
				o.Username = cmdutil.PromptForString(o.Reader, "Username: "******"Already logged into %q as %q.\n\n", o.Config.Host, o.Username)
						}

						return nil
					}
				}
			}
		}
	}

	// if kubeconfig doesn't already have a matching user stanza...
	clientConfig.BearerToken = ""
	clientConfig.CertData = []byte{}
	clientConfig.KeyData = []byte{}
	clientConfig.CertFile = o.CertFile
	clientConfig.KeyFile = o.KeyFile
	token, err := tokencmd.RequestToken(o.Config, o.Reader, o.Username, o.Password)
	if err != nil {
		return err
	}
	clientConfig.BearerToken = token

	osClient, err := client.New(clientConfig)
	if err != nil {
		return err
	}

	me, err := whoAmI(osClient)
	if err != nil {
		return err
	}
	o.Username = me.Name
	o.Config = clientConfig
	fmt.Fprintln(o.Out, "Login successful.\n")

	return nil
}
示例#10
0
func main() {
	flag.Parse()

	glog.Infof("Starting serve_hostnames soak test with queries=%d and podsPerNode=%d upTo=%d",
		*queriesAverage, *podsPerNode, *upTo)

	var spec string
	if *gke != "" {
		spec = filepath.Join(os.Getenv("HOME"), ".config", "gcloud", "kubernetes", "kubeconfig")
	} else {
		spec = filepath.Join(os.Getenv("HOME"), ".kube", "config")
	}
	settings, err := clientcmd.LoadFromFile(spec)
	if err != nil {
		glog.Fatalf("Error loading configuration: %v", err.Error())
	}
	if *gke != "" {
		settings.CurrentContext = *gke
	}
	config, err := clientcmd.NewDefaultClientConfig(*settings, &clientcmd.ConfigOverrides{}).ClientConfig()
	if err != nil {
		glog.Fatalf("Failed to construct config: %v", err)
	}

	c, err := client.New(config)
	if err != nil {
		glog.Fatalf("Failed to make client: %v", err)
	}

	var nodes *api.NodeList
	for start := time.Now(); time.Since(start) < nodeListTimeout; time.Sleep(2 * time.Second) {
		nodes, err = c.Nodes().List(labels.Everything(), fields.Everything())
		if err == nil {
			break
		}
		glog.Warningf("Failed to list nodes: %v", err)
	}
	if err != nil {
		glog.Fatalf("Giving up trying to list nodes: %v", err)
	}

	if len(nodes.Items) == 0 {
		glog.Fatalf("Failed to find any nodes.")
	}

	glog.Infof("Found %d nodes on this cluster:", len(nodes.Items))
	for i, node := range nodes.Items {
		glog.Infof("%d: %s", i, node.Name)
	}

	queries := *queriesAverage * len(nodes.Items) * *podsPerNode

	// Create the namespace
	got, err := c.Namespaces().Create(&api.Namespace{ObjectMeta: api.ObjectMeta{GenerateName: "serve-hostnames-"}})
	if err != nil {
		glog.Fatalf("Failed to create namespace: %v", err)
	}
	ns := got.Name
	defer func(ns string) {
		if err := c.Namespaces().Delete(ns); err != nil {
			glog.Warningf("Failed to delete namespace ns: %e", ns, err)
		}
	}(ns)
	glog.Infof("Created namespace %s", ns)

	// Create a service for these pods.
	glog.Infof("Creating service %s/serve-hostnames", ns)
	// Make several attempts to create a service.
	var svc *api.Service
	for start := time.Now(); time.Since(start) < serviceCreateTimeout; time.Sleep(2 * time.Second) {
		t := time.Now()
		svc, err = c.Services(ns).Create(&api.Service{
			ObjectMeta: api.ObjectMeta{
				Name: "serve-hostnames",
				Labels: map[string]string{
					"name": "serve-hostname",
				},
			},
			Spec: api.ServiceSpec{
				Ports: []api.ServicePort{{
					Protocol:   "TCP",
					Port:       9376,
					TargetPort: util.NewIntOrStringFromInt(9376),
				}},
				Selector: map[string]string{
					"name": "serve-hostname",
				},
			},
		})
		glog.V(4).Infof("Service create %s/server-hostnames took %v", ns, time.Since(t))
		if err == nil {
			break
		}
		glog.Warningf("After %v failed to create service %s/serve-hostnames: %v", time.Since(start), ns, err)
	}
	if err != nil {
		glog.Warningf("Unable to create service %s/%s: %v", ns, svc.Name, err)
		return
	}
	// Clean up service
	defer func() {
		glog.Infof("Cleaning up service %s/serve-hostnames", ns)
		// Make several attempts to delete the service.
		for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
			if err := c.Services(ns).Delete(svc.Name); err == nil {
				return
			}
			glog.Warningf("After %v unable to delete service %s/%s: %v", time.Since(start), ns, svc.Name, err)
		}
	}()

	// Put serve-hostname pods on each node.
	podNames := []string{}
	for i, node := range nodes.Items {
		for j := 0; j < *podsPerNode; j++ {
			podName := fmt.Sprintf("serve-hostname-%d-%d", i, j)
			podNames = append(podNames, podName)
			// Make several attempts
			for start := time.Now(); time.Since(start) < podCreateTimeout; time.Sleep(2 * time.Second) {
				glog.Infof("Creating pod %s/%s on node %s", ns, podName, node.Name)
				t := time.Now()
				_, err = c.Pods(ns).Create(&api.Pod{
					ObjectMeta: api.ObjectMeta{
						Name: podName,
						Labels: map[string]string{
							"name": "serve-hostname",
						},
					},
					Spec: api.PodSpec{
						Containers: []api.Container{
							{
								Name:  "serve-hostname",
								Image: "gcr.io/google_containers/serve_hostname:1.1",
								Ports: []api.ContainerPort{{ContainerPort: 9376}},
							},
						},
						NodeName: node.Name,
					},
				})
				glog.V(4).Infof("Pod create %s/%s request took %v", ns, podName, time.Since(t))
				if err == nil {
					break
				}
				glog.Warningf("After %s failed to create pod %s/%s: %v", time.Since(start), ns, podName, err)
			}
			if err != nil {
				glog.Warningf("Failed to create pod %s/%s: %v", ns, podName, err)
				return
			}
		}
	}
	// Clean up the pods
	defer func() {
		glog.Info("Cleaning up pods")
		// Make several attempts to delete the pods.
		for _, podName := range podNames {
			for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
				if err = c.Pods(ns).Delete(podName, nil); err == nil {
					break
				}
				glog.Warningf("After %v failed to delete pod %s/%s: %v", time.Since(start), ns, podName, err)
			}
		}
	}()

	glog.Info("Waiting for the serve-hostname pods to be ready")
	for _, podName := range podNames {
		var pod *api.Pod
		for start := time.Now(); time.Since(start) < podStartTimeout; time.Sleep(5 * time.Second) {
			pod, err = c.Pods(ns).Get(podName)
			if err != nil {
				glog.Warningf("Get pod %s/%s failed, ignoring for %v: %v", ns, podName, err, podStartTimeout)
				continue
			}
			if pod.Status.Phase == api.PodRunning {
				break
			}
		}
		if pod.Status.Phase != api.PodRunning {
			glog.Warningf("Gave up waiting on pod %s/%s to be running (saw %v)", ns, podName, pod.Status.Phase)
		} else {
			glog.Infof("%s/%s is running", ns, podName)
		}
	}

	// Wait for the endpoints to propagate.
	for start := time.Now(); time.Since(start) < endpointTimeout; time.Sleep(10 * time.Second) {
		hostname, err := c.Get().
			Namespace(ns).
			Prefix("proxy").
			Resource("services").
			Name("serve-hostnames").
			DoRaw()
		if err != nil {
			glog.Infof("After %v while making a proxy call got error %v", time.Since(start), err)
			continue
		}
		var r api.Status
		if err := api.Scheme.DecodeInto(hostname, &r); err != nil {
			break
		}
		if r.Status == api.StatusFailure {
			glog.Infof("After %v got status %v", time.Since(start), string(hostname))
			continue
		}
		break
	}

	// Repeatedly make requests.
	for iteration := 0; iteration != *upTo; iteration++ {
		responseChan := make(chan string, queries)
		// Use a channel of size *maxPar to throttle the number
		// of in-flight requests to avoid overloading the service.
		inFlight := make(chan struct{}, *maxPar)
		start := time.Now()
		for q := 0; q < queries; q++ {
			go func(i int, query int) {
				inFlight <- struct{}{}
				t := time.Now()
				hostname, err := c.Get().
					Namespace(ns).
					Prefix("proxy").
					Resource("services").
					Name("serve-hostnames").
					DoRaw()
				glog.V(4).Infof("Proxy call in namespace %s took %v", ns, time.Since(t))
				if err != nil {
					glog.Warningf("Call failed during iteration %d query %d : %v", i, query, err)
					// If the query failed return a string which starts with a character
					// that can't be part of a hostname.
					responseChan <- fmt.Sprintf("!failed in iteration %d to issue query %d: %v", i, query, err)
				} else {
					responseChan <- string(hostname)
				}
				<-inFlight
			}(iteration, q)
		}
		responses := make(map[string]int, *podsPerNode*len(nodes.Items))
		missing := 0
		for q := 0; q < queries; q++ {
			r := <-responseChan
			glog.V(4).Infof("Got response from %s", r)
			responses[r]++
			// If the returned hostname starts with '!' then it indicates
			// an error response.
			if len(r) > 0 && r[0] == '!' {
				glog.V(3).Infof("Got response %s", r)
				missing++
			}
		}
		if missing > 0 {
			glog.Warningf("Missing %d responses out of %d", missing, queries)
		}
		// Report any nodes that did not respond.
		for n, node := range nodes.Items {
			for i := 0; i < *podsPerNode; i++ {
				name := fmt.Sprintf("serve-hostname-%d-%d", n, i)
				if _, ok := responses[name]; !ok {
					glog.Warningf("No response from pod %s on node %s at iteration %d", name, node.Name, iteration)
				}
			}
		}
		glog.Infof("Iteration %d took %v for %d queries (%.2f QPS) with %d missing",
			iteration, time.Since(start), queries-missing, float64(queries-missing)/time.Since(start).Seconds(), missing)
	}
}
示例#11
0
// RunCmdRouter contains all the necessary functionality for the OpenShift cli router command
func RunCmdRouter(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RouterConfig, args []string) error {
	var name string
	switch len(args) {
	case 0:
		name = "router"
	case 1:
		name = args[0]
	default:
		return cmdutil.UsageError(cmd, "You may pass zero or one arguments to provide a name for the router")
	}

	if len(cfg.StatsUsername) > 0 {
		if strings.Contains(cfg.StatsUsername, ":") {
			return cmdutil.UsageError(cmd, "username %s must not contain ':'", cfg.StatsUsername)
		}
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		glog.Fatal(err)
	}

	if cfg.StatsPort > 0 {
		ports = append(ports, kapi.ContainerPort{
			Name:          "stats",
			HostPort:      cfg.StatsPort,
			ContainerPort: cfg.StatsPort,
			Protocol:      kapi.ProtocolTCP,
		})
	}

	label := map[string]string{"router": name}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	p, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing router %q: %v", name, err)
			}
			generate = true
		}
	}

	if generate {
		if cfg.DryRun && !output {
			return fmt.Errorf("router %q does not exist (no service)", name)
		}

		// create new router
		if len(cfg.Credentials) == 0 {
			return fmt.Errorf("router could not be created; you must specify a .kubeconfig file path containing credentials for connecting the router to the master with --credentials")
		}

		clientConfigLoadingRules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: cfg.Credentials, Precedence: []string{}}
		credentials, err := clientConfigLoadingRules.Load()
		if err != nil {
			return fmt.Errorf("router could not be created; the provided credentials %q could not be loaded: %v", cfg.Credentials, err)
		}
		config, err := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{}).ClientConfig()
		if err != nil {
			return fmt.Errorf("router could not be created; the provided credentials %q could not be used: %v", cfg.Credentials, err)
		}
		if err := kclient.LoadTLSFiles(config); err != nil {
			return fmt.Errorf("router could not be created; the provided credentials %q could not load certificate info: %v", cfg.Credentials, err)
		}
		insecure := "false"
		if config.Insecure {
			insecure = "true"
		}

		defaultCert, err := loadDefaultCert(cfg.DefaultCertificate)
		if err != nil {
			return fmt.Errorf("router could not be created; error reading default certificate file", err)
		}

		if len(cfg.StatsPassword) == 0 {
			cfg.StatsPassword = generateStatsPassword()
			fmt.Fprintf(out, "password for stats user %s has been set to %s\n", cfg.StatsUsername, cfg.StatsPassword)
		}

		env := app.Environment{
			"OPENSHIFT_MASTER":         config.Host,
			"OPENSHIFT_CA_DATA":        string(config.CAData),
			"OPENSHIFT_KEY_DATA":       string(config.KeyData),
			"OPENSHIFT_CERT_DATA":      string(config.CertData),
			"OPENSHIFT_INSECURE":       insecure,
			"DEFAULT_CERTIFICATE":      defaultCert,
			"ROUTER_SERVICE_NAME":      name,
			"ROUTER_SERVICE_NAMESPACE": namespace,
			"STATS_PORT":               strconv.Itoa(cfg.StatsPort),
			"STATS_USERNAME":           cfg.StatsUsername,
			"STATS_PASSWORD":           cfg.StatsPassword,
		}

		objects := []runtime.Object{
			&dapi.DeploymentConfig{
				ObjectMeta: kapi.ObjectMeta{
					Name:   name,
					Labels: label,
				},
				Triggers: []dapi.DeploymentTriggerPolicy{
					{Type: dapi.DeploymentTriggerOnConfigChange},
				},
				Template: dapi.DeploymentTemplate{
					ControllerTemplate: kapi.ReplicationControllerSpec{
						Replicas: cfg.Replicas,
						Selector: label,
						Template: &kapi.PodTemplateSpec{
							ObjectMeta: kapi.ObjectMeta{Labels: label},
							Spec: kapi.PodSpec{
								ServiceAccount: cfg.ServiceAccount,
								NodeSelector:   nodeSelector,
								Containers: []kapi.Container{
									{
										Name:  "router",
										Image: image,
										Ports: ports,
										Env:   env.List(),
										LivenessProbe: &kapi.Probe{
											Handler: kapi.Handler{
												TCPSocket: &kapi.TCPSocketAction{
													Port: kutil.IntOrString{
														IntVal: ports[0].ContainerPort,
													},
												},
											},
											InitialDelaySeconds: 10,
										},
										ImagePullPolicy: kapi.PullIfNotPresent,
									},
								},
							},
						},
					},
				},
			},
		}
		objects = app.AddServices(objects)
		// TODO: label all created objects with the same label - router=<name>
		list := &kapi.List{Items: objects}

		if output {
			if err := p.PrintObj(list, out); err != nil {
				return fmt.Errorf("Unable to print object: %v", err)
			}
			return nil
		}

		mapper, typer := f.Factory.Object()
		bulk := configcmd.Bulk{
			Mapper:            mapper,
			Typer:             typer,
			RESTClientFactory: f.Factory.RESTClient,

			After: configcmd.NewPrintNameOrErrorAfter(out, os.Stderr),
		}
		if errs := bulk.Create(list, namespace); len(errs) != 0 {
			return errExit
		}
		return nil
	}

	fmt.Fprintf(out, "Router %q service exists\n", name)
	return nil
}