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create_addon_istio.go
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create_addon_istio.go
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package create
import (
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/olli-ai/jx/v2/pkg/cmd/create/options"
"github.com/olli-ai/jx/v2/pkg/cmd/helper"
"github.com/blang/semver"
"github.com/olli-ai/jx/v2/pkg/packages"
"github.com/jenkins-x/jx-logging/pkg/log"
"github.com/olli-ai/jx/v2/pkg/cmd/opts"
"github.com/olli-ai/jx/v2/pkg/cmd/templates"
"github.com/olli-ai/jx/v2/pkg/kube"
"github.com/olli-ai/jx/v2/pkg/util"
"github.com/pkg/errors"
"github.com/spf13/cobra"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
DefaultIstioNamespace = "istio-system"
defaultIstioReleaseName = "istio"
defaultIstioPassword = "istio"
defaultIstioConfigDir = "/istio_service_dir"
defaultIstioVersion = ""
defaultIstioIngressGatewayService = "istio-ingressgateway"
)
var (
createAddonIstioLong = templates.LongDesc(`
Creates the istio addon for service mesh on Kubernetes
`)
createAddonIstioExample = templates.Examples(`
# Create the istio addon
jx create addon istio
# Create the istio addon in a custom namespace
jx create addon istio -n mynamespace
`)
)
// CreateAddonIstioOptions the options for the create spring command
type CreateAddonIstioOptions struct {
CreateAddonOptions
Chart string
Password string
ConfigDir string
NoInjectorWebhook bool
Dir string
IngressGatewayService string
}
// NewCmdCreateAddonIstio creates a command object for the "create" command
func NewCmdCreateAddonIstio(commonOpts *opts.CommonOptions) *cobra.Command {
options := &CreateAddonIstioOptions{
CreateAddonOptions: CreateAddonOptions{
CreateOptions: options.CreateOptions{
CommonOptions: commonOpts,
},
},
}
cmd := &cobra.Command{
Use: "istio",
Short: "Create the Istio addon for service mesh",
Aliases: []string{"env"},
Long: createAddonIstioLong,
Example: createAddonIstioExample,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
helper.CheckErr(err)
},
}
options.addFlags(cmd, DefaultIstioNamespace, defaultIstioReleaseName, defaultIstioVersion)
cmd.Flags().StringVarP(&options.Password, "password", "p", defaultIstioPassword, "The default password to use for Istio")
cmd.Flags().StringVarP(&options.ConfigDir, "config-dir", "d", defaultIstioConfigDir, "The config directory to use")
cmd.Flags().StringVarP(&options.Chart, optionChart, "c", "", "The name of the chart to use")
cmd.Flags().BoolVarP(&options.NoInjectorWebhook, "no-injector-webhook", "", false, "Disables the injector webhook")
cmd.Flags().StringVarP(&options.IngressGatewayService, "ingress-gateway-service", "", defaultIstioIngressGatewayService, "The name of the ingress gateway service created by Istio")
return cmd
}
// Run implements the command
func (o *CreateAddonIstioOptions) Run() error {
if o.Chart == "" {
// lets git clone the source to find the istio charts as they are not published anywhere yet
dir, err := o.getIstioChartsFromGitHub()
if err != nil {
return err
}
chartDir := filepath.Join(dir, kube.ChartIstio)
exists, err := util.DirExists(chartDir)
if !exists {
return fmt.Errorf("Could not find folder %s inside istio clone at %s", kube.ChartIstio, dir)
}
o.Dir = dir
o.Chart = kube.ChartIstio
}
if o.ReleaseName == "" {
return util.MissingOption(optionRelease)
}
if o.Chart == "" {
return util.MissingOption(optionChart)
}
err := o.EnsureHelm()
if err != nil {
return errors.Wrap(err, "failed to ensure that Helm is present")
}
client, err := o.KubeClient()
if err != nil {
return err
}
err = o.generateSecrets()
if err != nil {
return err
}
_, devNamespace, err := o.KubeClientAndDevNamespace()
if err != nil {
return fmt.Errorf("cannot find a dev team namespace to get existing exposecontroller config from. %v", err)
}
log.Logger().Infof("found dev namespace %s", devNamespace)
values := []string{}
if o.NoInjectorWebhook {
values = append(values, "sidecarInjectorWebhook.enabled=false")
}
setValues := strings.Split(o.SetValues, ",")
values = append(values, setValues...)
log.Logger().Infof("installing istio-init")
err = o.InstallChartAt(o.Dir, o.ReleaseName, o.Chart+"-init", o.Version, o.Namespace, true, values, nil, "")
if err != nil {
return fmt.Errorf("istio-init deployment failed: %v", err)
}
log.Logger().Infof("installing istio")
err = o.InstallChartAt(o.Dir, o.ReleaseName, o.Chart, o.Version, o.Namespace, true, values, nil, "")
if err != nil {
return fmt.Errorf("istio deployment failed: %v", err)
}
// get the ip of the Istio ingress gateway
c := make(chan string, 1)
go func() {
for {
svc, err := client.CoreV1().Services(o.Namespace).Get(o.IngressGatewayService, metav1.GetOptions{})
if err != nil {
log.Logger().Warnf("Error getting Istio ingress gateway %s/%s: %s", o.Namespace, o.IngressGatewayService, err)
c <- ""
} else {
if len(svc.Status.LoadBalancer.Ingress) > 0 {
c <- svc.Status.LoadBalancer.Ingress[0].IP
return
}
log.Logger().Infof("Waiting for Istio ingress gateway ip %s/%s", o.Namespace, o.IngressGatewayService)
}
time.Sleep(5 * time.Second)
}
}()
select {
case ip := <-c:
if ip != "" {
log.Logger().Infof("Istio ingress gateway service ip: %s", ip)
}
case <-time.After(1 * time.Minute):
log.Logger().Infof("Istio ingress gateway service ip is not yet ready, you can get it with `kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}'`")
}
return nil
}
// getIstioChartsFromGitHub lets download the release of istio that we need
func (o *CreateAddonIstioOptions) getIstioChartsFromGitHub() (string, error) {
answer := ""
var err error
var actualVersion semver.Version
if o.Version == "" {
actualVersion, err = util.GetLatestVersionFromGitHub("istio", "istio")
if err != nil {
return answer, fmt.Errorf("unable to get %s version for github.com/%s/%s %v", o.Version, "istio", "istio", err)
}
} else {
actualVersion, err = semver.Make(o.Version)
if err != nil {
return answer, fmt.Errorf("unable to parse version %s %v", o.Version, err)
}
}
binDir, err := util.JXBinLocation()
if err != nil {
return answer, err
}
cacheDir, err := util.CacheDir()
if err != nil {
return answer, err
}
binaryFile := "istioctl"
extension := ""
switch runtime.GOOS {
case "windows":
extension = "win.zip"
binaryFile += ".exe"
case "darwin":
extension = "osx.tar.gz"
default:
extension = "linux.tar.gz"
}
clientURL := fmt.Sprintf("https://github.com/istio/istio/releases/download/%s/istio-%s-%s", actualVersion, actualVersion, extension)
outputDir := filepath.Join(cacheDir, "istio-"+actualVersion.String())
os.RemoveAll(outputDir)
answer = outputDir
err = os.MkdirAll(outputDir, util.DefaultWritePermissions)
if err != nil {
return answer, err
}
tarPath := filepath.Join(cacheDir, fmt.Sprintf("istio-%s-%s", actualVersion, extension))
fi, err := os.Stat(tarPath)
if os.IsNotExist(err) || fi.Size() == 0 {
err = packages.DownloadFile(clientURL, tarPath)
if err != nil {
return answer, err
}
} else {
log.Logger().Infof("Istio package already downloaded: %s", tarPath)
}
if strings.HasSuffix(extension, ".zip") {
err = util.Unzip(tarPath, cacheDir)
if err != nil {
return answer, err
}
} else {
err = util.UnTargzAll(tarPath, cacheDir)
if err != nil {
return answer, err
}
}
f := filepath.Join(outputDir, "bin", binaryFile)
exists, err := util.FileExists(f)
if err != nil {
return answer, err
}
if exists {
binaryDest := filepath.Join(binDir, binaryFile)
os.Remove(binaryDest)
err = os.Rename(f, binaryDest)
if err != nil {
return answer, err
}
}
return answer, nil
}
func (o *CreateAddonIstioOptions) generateSecrets() error {
// generate secret for kiali && grafana
return nil
}