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create_addon_istio.go
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create_addon_istio.go
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package cmd
import (
"fmt"
"io"
"io/ioutil"
"path/filepath"
"strings"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/kube"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"gopkg.in/AlecAivazis/survey.v1/terminal"
)
const (
defaultIstioNamespace = "istio-system"
defaultIstioReleaseName = "istio"
defaultIstioPassword = "istio"
defaultIstioConfigDir = "/istio_service_dir"
)
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
}
// NewCmdCreateAddonIstio creates a command object for the "create" command
func NewCmdCreateAddonIstio(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := &CreateAddonIstioOptions{
CreateAddonOptions: CreateAddonOptions{
CreateOptions: CreateOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
},
},
}
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()
CheckErr(err)
},
}
options.addCommonFlags(cmd)
options.addFlags(cmd, defaultIstioNamespace, defaultIstioReleaseName)
cmd.Flags().StringVarP(&options.Version, "version", "v", "", "The version of the Istio chart to use")
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")
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.FileExists(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")
}
_, _, err = o.KubeClient()
if err != nil {
return err
}
devNamespace, _, err := kube.GetDevNamespace(o.KubeClientCached, o.currentNamespace)
if err != nil {
return fmt.Errorf("cannot find a dev team namespace to get existing exposecontroller config from. %v", err)
}
log.Infof("found dev namespace %s\n", devNamespace)
values := []string{}
if o.NoInjectorWebhook {
values = append(values, "sidecarInjectorWebhook.enabled=false")
}
setValues := strings.Split(o.SetValues, ",")
values = append(values, setValues...)
err = o.installChartAt(o.Dir, o.ReleaseName, o.Chart, o.Version, o.Namespace, true, values)
if err != nil {
return fmt.Errorf("istio deployment failed: %v", err)
}
return nil
}
func (o *CreateAddonIstioOptions) getIstioChartsFromGitHub() (string, error) {
answer, err := ioutil.TempDir("", "istio")
if err != nil {
return answer, err
}
gitRepo := "https://github.com/istio/istio.git"
log.Infof("Cloning %s to %s\n", util.ColorInfo(gitRepo), util.ColorInfo(answer))
err = o.Git().Clone(gitRepo, answer)
if err != nil {
return answer, err
}
return answer, nil
}