Golang util.Infof函數代碼示例

// lets find the executable on the PATH or in the fabric8 directory
func resolveBinaryLocation(executable string) string {
	path, err := exec.LookPath(executable)
	if err != nil || fileNotExist(path) {
		home := os.Getenv("HOME")
		if home == "" {
			util.Error("No $HOME environment variable found")
		}
		writeFileLocation := getFabric8BinLocation()

		// lets try in the fabric8 folder
		path = filepath.Join(writeFileLocation, executable)
		if fileNotExist(path) {
			path = executable
			// lets try in the folder where we found the gofabric8 executable
			folder, err := osext.ExecutableFolder()
			if err != nil {
				util.Errorf("Failed to find executable folder: %v\n", err)
			} else {
				path = filepath.Join(folder, executable)
				if fileNotExist(path) {
					util.Infof("Could not find executable at %v\n", path)
					path = executable
				}
			}
		}
	}
	util.Infof("using the executable %s\n", path)
	return path
}

func ensureNamespaceExists(c *k8sclient.Client, oc *oclient.Client, ns string) error {
	typeOfMaster := util.TypeOfMaster(c)
	if typeOfMaster == util.Kubernetes {
		nss := c.Namespaces()
		_, err := nss.Get(ns)
		if err != nil {
			// lets assume it doesn't exist!
			util.Infof("Creating new Namespace: %s\n", ns)
			entity := kapi.Namespace{
				ObjectMeta: kapi.ObjectMeta{Name: ns},
			}
			_, err := nss.Create(&entity)
			return err
		}
	} else {
		_, err := oc.Projects().Get(ns)
		if err != nil {
			// lets assume it doesn't exist!
			request := projectapi.ProjectRequest{
				ObjectMeta: kapi.ObjectMeta{Name: ns},
			}
			util.Infof("Creating new Project: %s\n", ns)
			_, err := oc.ProjectRequests().Create(&request)
			return err
		}
	}
	return nil
}

func createMissingPVs(c *k8sclient.Client, ns string) {
	found, pvcs, pendingClaimNames := findPendingPVs(c, ns)
	if found {
		sshCommand := ""
		createPV(c, ns, pendingClaimNames, sshCommand)
		items := pvcs.Items
		for _, item := range items {
			status := item.Status.Phase
			if status == api.ClaimPending || status == api.ClaimLost {
				err := c.PersistentVolumeClaims(ns).Delete(item.ObjectMeta.Name)
				if err != nil {
					util.Infof("Error deleting PVC %s\n", item.ObjectMeta.Name)
				} else {
					util.Infof("Recreating PVC %s\n", item.ObjectMeta.Name)

					c.PersistentVolumeClaims(ns).Create(&api.PersistentVolumeClaim{
						ObjectMeta: api.ObjectMeta{
							Name:      item.ObjectMeta.Name,
							Namespace: ns,
						},
						Spec: api.PersistentVolumeClaimSpec{
							VolumeName:  ns + "-" + item.ObjectMeta.Name,
							AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
							Resources: api.ResourceRequirements{
								Requests: api.ResourceList{
									api.ResourceName(api.ResourceStorage): resource.MustParse("1Gi"),
								},
							},
						},
					})
				}
			}
		}
	}
}

func printSummary(typeOfMaster util.MasterType, externalNodeName string, ns string, domain string, c *k8sclient.Client) {
	util.Info("\n")
	util.Info("-------------------------\n")
	util.Info("\n")
	clientType := getClientTypeName(typeOfMaster)

	if externalNodeName != "" {
		util.Info("Deploying ingress controller on node ")
		util.Successf("%s", externalNodeName)
		util.Info(" use its external ip when configuring your wildcard DNS.\n")
		util.Infof("To change node move the label: `%s label node %s %s- && %s label node $YOUR_NEW_NODE %s=true`\n", clientType, externalNodeName, externalIPLabel, clientType, externalIPLabel)
		util.Info("\n")
	}

	util.Info("Default GOGS admin username/password = ")
	util.Successf("%s/%s\n", gogsDefaultUsername, gogsDefaultPassword)
	util.Info("\n")

	found, _ := checkIfPVCsPending(c, ns)
	if found {
		util.Errorf("There are pending PersistentVolumeClaims\n")
		util.Infof("If using a local cluster run `gofabric8 volumes` to create missing HostPath volumes\n")
		util.Infof("If using a remote cloud then enable dynamic persistence with a StorageClass.  For details see http://fabric8.io/guide/getStarted/persistence.html\n")
		util.Info("\n")
	}
	util.Infof("Downloading images and waiting to open the fabric8 console...\n")
	util.Info("\n")
	util.Info("-------------------------\n")
}

func runTemplate(c *k8sclient.Client, oc *oclient.Client, appToRun string, ns string, domain string, apiserver string, pv bool) {
	util.Info("\n\nInstalling: ")
	util.Successf("%s\n\n", appToRun)
	typeOfMaster := util.TypeOfMaster(c)
	if typeOfMaster == util.Kubernetes {
		jsonData, format, err := loadTemplateData(ns, appToRun, c, oc)
		if err != nil {
			printError("Failed to load app "+appToRun, err)
		}
		createTemplate(jsonData, format, appToRun, ns, domain, apiserver, c, oc, pv)
	} else {
		tmpl, err := oc.Templates(ns).Get(appToRun)
		if err != nil {
			printError("Failed to load template "+appToRun, err)
		}
		util.Infof("Loaded template with %d objects", len(tmpl.Objects))
		processTemplate(tmpl, ns, domain, apiserver)

		objectCount := len(tmpl.Objects)

		util.Infof("Creating "+appToRun+" template resources from %d objects\n", objectCount)
		for _, o := range tmpl.Objects {
			err = processItem(c, oc, &o, ns, pv)
		}
	}
}

func NewCmdVolumes(f *cmdutil.Factory) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "volumes",
		Short: "Creates a persisent volume for any pending persistance volume claims",
		Long:  `Creates a persisent volume for any pending persistance volume claims`,
		PreRun: func(cmd *cobra.Command, args []string) {
			showBanner()
		},
		Run: func(cmd *cobra.Command, args []string) {
			c, _ := client.NewClient(f)
			ns, _, err := f.DefaultNamespace()
			if err != nil {
				util.Fatal("No default namespace")
			} else {

				found, pvcs, pendingClaimNames := findPendingPVs(c, ns)
				if found {

					sshCommand := cmd.Flags().Lookup(sshCommandFlag).Value.String()

					createPV(c, ns, pendingClaimNames, sshCommand)
					items := pvcs.Items
					for _, item := range items {
						name := item.ObjectMeta.Name
						status := item.Status.Phase
						if status == api.ClaimPending || status == api.ClaimLost {
							err = c.PersistentVolumeClaims(ns).Delete(name)
							if err != nil {
								util.Infof("Error deleting PVC %s\n", name)
							} else {
								util.Infof("Recreating PVC %s\n", name)
								c.PersistentVolumeClaims(ns).Create(&api.PersistentVolumeClaim{
									ObjectMeta: api.ObjectMeta{
										Name:      name,
										Namespace: ns,
									},
									Spec: api.PersistentVolumeClaimSpec{
										VolumeName:  ns + "-" + name,
										AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
										Resources: api.ResourceRequirements{
											Requests: api.ResourceList{
												api.ResourceName(api.ResourceStorage): resource.MustParse("1Gi"),
											},
										},
									},
								})
							}
						}
					}
				}
			}
		},
	}
	cmd.PersistentFlags().String(sshCommandFlag, "", "the ssh command to run commands inside the VM of the single node cluster")
	return cmd
}

func createPV(c *k8sclient.Client, ns string, pvcNames []string, sshCommand string) (Result, error) {

	for _, pvcName := range pvcNames {
		hostPath := path.Join("/data", ns, pvcName)
		nsPvcName := ns + "-" + pvcName
		pvs := c.PersistentVolumes()
		rc, err := pvs.List(api.ListOptions{})
		if err != nil {
			util.Errorf("Failed to load PersistentVolumes with error %v\n", err)
		}
		items := rc.Items
		for _, volume := range items {
			if nsPvcName == volume.ObjectMeta.Name {
				util.Infof("Already created PersistentVolumes for %s\n", nsPvcName)
			}
		}

		// we no longer need to do chmod on kubernetes as we have init containers now
		typeOfMaster := util.TypeOfMaster(c)
		if typeOfMaster != util.Kubernetes || len(sshCommand) > 0 {
			err = configureHostPathVolume(c, ns, hostPath, sshCommand)
			if err != nil {
				util.Errorf("Failed to configure the host path %s with error %v\n", hostPath, err)
			}
		}

		// lets create a new PV
		util.Infof("PersistentVolume name %s will be created on host path %s\n", nsPvcName, hostPath)
		pv := api.PersistentVolume{
			ObjectMeta: api.ObjectMeta{
				Name: nsPvcName,
			},
			Spec: api.PersistentVolumeSpec{
				Capacity: api.ResourceList{
					api.ResourceName(api.ResourceStorage): resource.MustParse("1Gi"),
				},
				AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
				PersistentVolumeSource: api.PersistentVolumeSource{
					HostPath: &api.HostPathVolumeSource{Path: hostPath},
				},
				PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimRecycle,
			},
		}

		_, err = pvs.Create(&pv)
		if err != nil {
			util.Errorf("Failed to create PersistentVolume %s at %s with error %v\n", nsPvcName, hostPath, err)
		}

	}

	return Success, nil
}

func generateSshKeyPair(logGeneratedKeys string) Keypair {

	priv, err := rsa.GenerateKey(rand.Reader, 2014)
	if err != nil {
		util.Fatalf("Error generating key", err)
	}
	err = priv.Validate()
	if err != nil {
		util.Fatalf("Validation failed.", err)
	}

	// Get der format. priv_der []byte
	priv_der := x509.MarshalPKCS1PrivateKey(priv)

	// pem.Block
	// blk pem.Block
	priv_blk := pem.Block{
		Type:    "RSA PRIVATE KEY",
		Headers: nil,
		Bytes:   priv_der,
	}

	// Resultant private key in PEM format.
	// priv_pem string
	priv_pem := string(pem.EncodeToMemory(&priv_blk))

	if logGeneratedKeys == "true" {
		util.Infof(priv_pem)
	}

	// Public Key generation
	pub := priv.PublicKey
	pub_der, err := x509.MarshalPKIXPublicKey(&pub)
	if err != nil {
		util.Fatalf("Failed to get der format for PublicKey.", err)
	}

	pub_blk := pem.Block{
		Type:    "PUBLIC KEY",
		Headers: nil,
		Bytes:   pub_der,
	}
	pub_pem := string(pem.EncodeToMemory(&pub_blk))
	if logGeneratedKeys == "true" {
		util.Infof(pub_pem)
	}

	return Keypair{
		pub:  []byte(pub_pem),
		priv: []byte(priv_pem),
	}
}

func createPersistentVolume(cmd *cobra.Command, ns string, c *k8sclient.Client, fac *cmdutil.Factory) (Result, error) {
	flags := cmd.Flags()
	hostPath := flags.Lookup(hostPathFlag).Value.String()
	name := flags.Lookup(nameFlag).Value.String()
	pvs := c.PersistentVolumes()
	rc, err := pvs.List(labels.Everything(), fields.Everything())
	if err != nil {
		util.Errorf("Failed to load PersistentVolumes with error %v", err)
		return Failure, err
	}
	items := rc.Items
	for _, volume := range items {
		// TODO use the external load balancer as a way to know if we should create a route?
		vname := volume.ObjectMeta.Name
		if vname == name {
			util.Infof("Already created PersistentVolumes for %s\n", name)
			return Success, nil
		}
	}
	if hostPath == "" {
		return missingFlag(cmd, hostPathFlag)
	}
	if confirmAction(flags) == false {
		return Failure, nil
	}

	// lets create a new PV
	util.Infof("PersistentVolume name %s will be created on host path %s\n", name, hostPath)
	pv := api.PersistentVolume{
		ObjectMeta: api.ObjectMeta{
			Name: name,
		},
		Spec: api.PersistentVolumeSpec{
			Capacity: api.ResourceList{
				api.ResourceName(api.ResourceStorage): resource.MustParse("100G"),
			},
			AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteMany},
			PersistentVolumeSource: api.PersistentVolumeSource{
				HostPath: &api.HostPathVolumeSource{Path: hostPath},
			},
		},
	}

	_, err = pvs.Create(&pv)
	if err != nil {
		util.Errorf("Failed to create PersistentVolume %s at %s with error %v", name, hostPath, err)
		return Failure, err
	}
	return Success, nil
}

func downloadKubectlClient() (err error) {

	os := runtime.GOOS
	arch := runtime.GOARCH

	kubectlBinary := kubectl
	if runtime.GOOS == "windows" {
		kubectlBinary += ".exe"
	}

	_, err = exec.LookPath(kubectlBinary)
	if err != nil {
		latestVersion, err := getLatestVersionFromGitHub(kubernetes, kubernetes)
		if err != nil {
			return fmt.Errorf("Unable to get latest version for %s/%s %v", kubernetes, kubernetes, err)
		}

		clientURL := fmt.Sprintf("https://storage.googleapis.com/kubernetes-release/release/v%s/bin/%s/%s/%s", latestVersion, os, arch, kubectlBinary)

		util.Infof("Downloading %s...\n", clientURL)

		fullPath := filepath.Join(getFabric8BinLocation(), kubectlBinary)
		err = downloadFile(fullPath, clientURL)
		if err != nil {
			util.Errorf("Unable to download file %s/%s %v", fullPath, clientURL, err)
			return err
		}
		util.Successf("Downloaded %s\n", fullPath)
	} else {
		util.Successf("%s is already available on your PATH\n", kubectlBinary)
	}

	return nil
}

func downloadKubernetes(d downloadProperties) (err error) {
	os := runtime.GOOS
	arch := runtime.GOARCH

	if runtime.GOOS == "windows" {
		d.kubeBinary += ".exe"
	}

	_, err = exec.LookPath(d.kubeBinary)
	if err != nil {
		latestVersion, err := getLatestVersionFromGitHub(d.kubeDistroOrg, d.kubeDistroRepo)
		if err != nil {
			util.Errorf("Unable to get latest version for %s/%s %v", d.kubeDistroOrg, d.kubeDistroRepo, err)
			return err
		}

		kubeURL := fmt.Sprintf(d.downloadURL+d.kubeDistroRepo+"/releases/"+d.extraPath+"v%s/%s-%s-%s", latestVersion, d.kubeDistroRepo, os, arch)
		if runtime.GOOS == "windows" {
			kubeURL += ".exe"
		}
		util.Infof("Downloading %s...\n", kubeURL)

		fullPath := filepath.Join(getFabric8BinLocation(), d.kubeBinary)
		err = downloadFile(fullPath, kubeURL)
		if err != nil {
			util.Errorf("Unable to download file %s/%s %v", fullPath, kubeURL, err)
			return err
		}
		util.Successf("Downloaded %s\n", fullPath)
	} else {
		util.Successf("%s is already available on your PATH\n", d.kubeBinary)
	}

	return nil
}

func waitForDeployment(c *k8sclient.Client, ns string, name string, sleepMillis time.Duration) error {
	util.Infof("Deployment %s waiting for it to be ready...\n", name)
	for {
		deployment, err := c.Extensions().Deployments(ns).Get(name)
		if err != nil {
			return err
		}
		available := deployment.Status.AvailableReplicas
		unavailable := deployment.Status.UnavailableReplicas
		if unavailable == 0 && available > 0 {
			util.Infof("DeploymentConfig %s now has %d available replicas\n", name, available)
			return nil
		}
		time.Sleep(sleepMillis)
	}
}

func copyEndpoints(c *k8sclient.Client, fromNs string, toNs string, names []string) error {
	var answer error
	for _, name := range names {
		item, err := c.Endpoints(fromNs).Get(name)
		if err != nil {
			util.Warnf("No endpoint called %s found in namespace %s", name, fromNs)
			answer = err
		}
		name := item.Name
		objectMeta := item.ObjectMeta

		current, err := c.Endpoints(toNs).Get(name)
		if current == nil || err != nil {
			// lets create the endpoint
			newEndpoints := &api.Endpoints{
				ObjectMeta: api.ObjectMeta{
					Name:        name,
					Labels:      objectMeta.Labels,
					Annotations: objectMeta.Annotations,
				},
				Subsets: item.Subsets,
			}
			_, err = c.Endpoints(toNs).Create(newEndpoints)
			if err != nil {
				return err
			}
			util.Infof("Created endpoint %s in namespace %s\n", name, toNs)
		}
	}
	return answer
}

func downloadFunktion() (err error) {
	os := runtime.GOOS
	arch := runtime.GOARCH

	_, err = exec.LookPath(funktion)
	if err != nil {
		latestVersion, err := getLatestVersionFromGitHub(fabric8io, funktionOperator)
		if err != nil {
			util.Errorf("Unable to get latest version for %s/%s %v", fabric8io, funktionOperator, err)
			return err
		}

		funktionURL := fmt.Sprintf(githubURL+fabric8io+"/"+funktionOperator+"/releases/download/v%s/%s-%s-%s", latestVersion, funktionOperator, os, arch)
		if runtime.GOOS == "windows" {
			funktionURL += ".exe"
		}
		util.Infof("Downloading %s...\n", funktionURL)

		fullPath := filepath.Join(getFabric8BinLocation(), funktion)
		err = downloadFile(fullPath, funktionURL)
		if err != nil {
			util.Errorf("Unable to download file %s/%s %v", fullPath, funktionURL, err)
			return err
		}
		util.Successf("Downloaded %s\n", fullPath)
	} else {
		util.Successf("%s is already available on your PATH\n", funktion)
	}

	return nil
}

func processResource(c *k8sclient.Client, b []byte, ns string, kind string) error {
	util.Infof("Processing resource kind: %s in namespace %s\n", kind, ns)
	req := c.Post().Body(b)
	if kind == "Deployment" {
		req.AbsPath("apis", "extensions/v1beta1", "namespaces", ns, strings.ToLower(kind+"s"))
	} else if kind == "BuildConfig" || kind == "DeploymentConfig" || kind == "Template" || kind == "PolicyBinding" || kind == "Role" || kind == "RoleBinding" {
		req.AbsPath("oapi", "v1", "namespaces", ns, strings.ToLower(kind+"s"))
	} else if kind == "OAuthClient" || kind == "Project" || kind == "ProjectRequest" {
		req.AbsPath("oapi", "v1", strings.ToLower(kind+"s"))
	} else if kind == "Namespace" {
		req.AbsPath("api", "v1", "namespaces")
	} else {
		req.Namespace(ns).Resource(strings.ToLower(kind + "s"))
	}
	res := req.Do()
	if res.Error() != nil {
		err := res.Error()
		if err != nil {
			util.Warnf("Failed to create %s: %v", kind, err)
			return err
		}
	}
	var statusCode int
	res.StatusCode(&statusCode)
	if statusCode != http.StatusCreated {
		return fmt.Errorf("Failed to create %s: %d", kind, statusCode)
	}
	return nil
}