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create_addon_flagger.go
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create_addon_flagger.go
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package cmd
import (
"fmt"
"strings"
"github.com/jenkins-x/jx/pkg/log"
istiov1alpha3 "github.com/knative/pkg/apis/istio/v1alpha3"
"github.com/jenkins-x/jx/pkg/kube"
"github.com/pkg/errors"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/util"
"github.com/spf13/cobra"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
)
const (
defaultFlaggerNamespace = "istio-system"
defaultFlaggerReleaseName = kube.DefaultFlaggerReleaseName
defaultFlaggerVersion = ""
defaultFlaggerRepo = "https://flagger.app"
optionGrafanaChart = "grafana-chart"
defaultFlaggerProductionEnvironment = "production"
defaultIstioGateway = "jx-gateway"
)
var (
createAddonFlaggerLong = templates.LongDesc(`
Creates the Flagger addon
`)
createAddonFlaggerExample = templates.Examples(`
# Create the Flagger addon
jx create addon flagger
`)
)
type CreateAddonFlaggerOptions struct {
CreateAddonOptions
Chart string
GrafanaChart string
ProductionEnvironment string
IstioGateway string
}
func NewCmdCreateAddonFlagger(commonOpts *CommonOptions) *cobra.Command {
options := &CreateAddonFlaggerOptions{
CreateAddonOptions: CreateAddonOptions{
CreateOptions: CreateOptions{
CommonOptions: commonOpts,
},
},
}
cmd := &cobra.Command{
Use: "flagger",
Short: "Create the Flagger addon for Canary deployments",
Long: createAddonFlaggerLong,
Example: createAddonFlaggerExample,
Run: func(cmd *cobra.Command, args []string) {
err := options.Run()
CheckErr(err)
},
}
options.addFlags(cmd, defaultFlaggerNamespace, defaultFlaggerReleaseName, defaultFlaggerVersion)
cmd.Flags().StringVarP(&options.Chart, optionChart, "c", kube.ChartFlagger, "The name of the chart to use")
cmd.Flags().StringVarP(&options.GrafanaChart, optionGrafanaChart, "", kube.ChartFlaggerGrafana, "The name of the Flagger Grafana chart to use")
cmd.Flags().StringVarP(&options.ProductionEnvironment, "environment", "e", defaultFlaggerProductionEnvironment, "The name of the production environment where Istio will be enabled")
cmd.Flags().StringVarP(&options.IstioGateway, "istio-gateway", "", defaultIstioGateway, "The name of the Istio Gateway that will be created if it does not exist")
return cmd
}
// Create the addon
func (o *CreateAddonFlaggerOptions) Run() error {
if o.ReleaseName == "" {
return util.MissingOption(optionRelease)
}
if o.Chart == "" {
return util.MissingOption(optionChart)
}
if o.GrafanaChart == "" {
return util.MissingOption(optionGrafanaChart)
}
err := o.ensureHelm()
if err != nil {
return errors.Wrap(err, "failed to ensure that Helm is present")
}
values := []string{}
setValues := strings.Split(o.SetValues, ",")
values = append(values, setValues...)
err = o.addHelmRepoIfMissing(defaultFlaggerRepo, "flagger", "", "")
if err != nil {
return errors.Wrap(err, "Flagger deployment failed")
}
err = o.installChart(o.ReleaseName, o.Chart, o.Version, o.Namespace, true, values, nil, "")
if err != nil {
return errors.Wrap(err, "Flagger deployment failed")
}
err = o.installChart(o.ReleaseName+"-grafana", o.GrafanaChart, o.Version, o.Namespace, true, values, nil, "")
if err != nil {
return errors.Wrap(err, "Flagger Grafana deployment failed")
}
// Enable Istio in production namespace
if o.ProductionEnvironment != "" {
client, err := o.KubeClient()
if err != nil {
return errors.Wrap(err, "error enabling Istio in production namespace")
}
var ns string
ns, err = o.findEnvironmentNamespace(o.ProductionEnvironment)
if err != nil {
return errors.Wrap(err, fmt.Sprintf("error enabling Istio for environment %s", o.ProductionEnvironment))
}
log.Infof("Enabling Istio in namespace %s\n", ns)
patch := []byte(`{"metadata":{"labels":{"istio-injection":"enabled"}}}`)
_, err = client.CoreV1().Namespaces().Patch(ns, types.MergePatchType, patch)
if err != nil {
return errors.Wrap(err, fmt.Sprintf("error enabling Istio in namespace %s", ns))
}
}
// Create the Istio gateway
if o.IstioGateway != "" {
istioClient, err := o.CreateAddonOptions.CommonOptions.IstioClient()
if err != nil {
return errors.Wrap(err, "error building Istio client")
}
gateway, err := istioClient.NetworkingV1alpha3().Gateways(defaultIstioNamespace).Get(o.IstioGateway, metav1.GetOptions{})
if apierrors.IsNotFound(err) {
gateway = &istiov1alpha3.Gateway{
ObjectMeta: metav1.ObjectMeta{
Name: o.IstioGateway,
Namespace: defaultIstioNamespace,
},
Spec: istiov1alpha3.GatewaySpec{
Selector: map[string]string{"istio": "ingressgateway"},
Servers: []istiov1alpha3.Server{
// TODO add https port if enabled
{
Port: istiov1alpha3.Port{
Number: 80,
Name: "http",
Protocol: "HTTP",
},
Hosts: []string{"*"},
},
},
},
}
log.Infof("Creating Istio gateway: %s\n", o.IstioGateway)
gateway, err = istioClient.NetworkingV1alpha3().Gateways(defaultIstioNamespace).Create(gateway)
if err != nil {
return errors.Wrap(err, "error creating Istio gateway")
}
} else {
log.Infof("Istio gateway already exists: %s\n", o.IstioGateway)
}
}
return nil
}