/
deploy.go
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/
deploy.go
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package karmada
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"path"
"path/filepath"
"regexp"
"strings"
corev1 "k8s.io/api/core/v1"
apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
"k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/klog/v2"
apiregistrationv1 "k8s.io/kube-aggregator/pkg/apis/apiregistration/v1"
"sigs.k8s.io/yaml"
"github.com/karmada-io/karmada/pkg/karmadactl/cmdinit/options"
"github.com/karmada-io/karmada/pkg/karmadactl/cmdinit/utils"
)
const namespace = "karmada-system"
// InitKarmadaResources Initialize karmada resource
func InitKarmadaResources(dir, caBase64 string) error {
restConfig, err := utils.RestConfig(filepath.Join(dir, options.KarmadaKubeConfigName))
if err != nil {
return err
}
clientSet, err := utils.NewClientSet(restConfig)
if err != nil {
return err
}
// create namespace
if _, err := clientSet.CoreV1().Namespaces().Create(context.TODO(), &corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: namespace,
},
}, metav1.CreateOptions{}); err != nil {
klog.Exitln(err)
}
// New CRDsClient
crdClient, err := utils.NewCRDsClient(restConfig)
if err != nil {
return err
}
// Initialize crd
basesCRDsFiles := utils.ListFiles(dir + "/crds/bases")
klog.Infof("Initialize karmada bases crd resource `%s/crds/bases`", dir)
for _, v := range basesCRDsFiles {
if path.Ext(v) != ".yaml" {
continue
}
if err := createCRDs(crdClient, v); err != nil {
return err
}
}
patchesCRDsFiles := utils.ListFiles(dir + "/crds/patches")
klog.Infof("Initialize karmada patches crd resource `%s/crds/patches`", dir)
for _, v := range patchesCRDsFiles {
if path.Ext(v) != ".yaml" {
continue
}
if err := patchCRDs(crdClient, caBase64, v); err != nil {
return err
}
}
// create webhook configuration
// https://github.com/karmada-io/karmada/blob/master/artifacts/deploy/webhook-configuration.yaml
klog.Info("Crate MutatingWebhookConfiguration mutating-config.")
if err = createMutatingWebhookConfiguration(clientSet, mutatingConfig(caBase64)); err != nil {
klog.Exitln(err)
}
klog.Info("Crate ValidatingWebhookConfiguration validating-config.")
if err = createValidatingWebhookConfiguration(clientSet, validatingConfig(caBase64)); err != nil {
klog.Exitln(err)
}
// karmada-aggregated-apiserver
if err = initAPIService(clientSet, restConfig); err != nil {
klog.Exitln(err)
}
return nil
}
func crdPatchesResources(filename, caBundle string) ([]byte, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
re, err := regexp.Compile("{{caBundle}}")
if err != nil {
return nil, err
}
repl := re.ReplaceAllString(string(data), caBundle)
return []byte(repl), nil
}
// createCRDs create crd resource
func createCRDs(crdClient *clientset.Clientset, filename string) error {
obj := apiextensionsv1.CustomResourceDefinition{}
data, err := ioutil.ReadFile(filename)
if err != nil {
return err
}
jsonByte, err := yaml.YAMLToJSON(data)
if err != nil {
return err
}
if err := json.Unmarshal(jsonByte, &obj); err != nil {
klog.Errorln("Error convert json byte to apiExtensionsV1 CustomResourceDefinition struct.")
return err
}
crd := crdClient.ApiextensionsV1().CustomResourceDefinitions()
if _, err := crd.Create(context.TODO(), &obj, metav1.CreateOptions{}); err != nil {
return err
}
return nil
}
// patchCRDs patch crd resource
func patchCRDs(crdClient *clientset.Clientset, caBundle, filename string) error {
data, err := crdPatchesResources(filename, caBundle)
if err != nil {
return err
}
jsonByte, err := yaml.YAMLToJSON(data)
if err != nil {
return err
}
name := getName(path.Base(filename), "_", ".") + ".work.karmada.io"
crd := crdClient.ApiextensionsV1().CustomResourceDefinitions()
if _, err := crd.Patch(context.TODO(), name, types.StrategicMergePatchType, jsonByte, metav1.PatchOptions{}); err != nil {
return err
}
return nil
}
func getName(str, start, end string) string {
n := strings.LastIndex(str, start) + 1
str = string([]byte(str)[n:])
m := strings.Index(str, end)
str = string([]byte(str)[:m])
return str
}
func initAPIService(clientSet *kubernetes.Clientset, restConfig *rest.Config) error {
// https://github.com/karmada-io/karmada/blob/master/artifacts/deploy/apiservice.yaml
aaService := &corev1.Service{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "Service",
},
ObjectMeta: metav1.ObjectMeta{
Name: "karmada-aggregated-apiserver",
Namespace: namespace,
},
Spec: corev1.ServiceSpec{
Type: corev1.ServiceTypeExternalName,
ExternalName: fmt.Sprintf("karmada-aggregated-apiserver.%s.svc.cluster.local", namespace),
},
}
if _, err := clientSet.CoreV1().Services(namespace).Create(context.TODO(), aaService, metav1.CreateOptions{}); err != nil {
return err
}
// new apiRegistrationClient
apiRegistrationClient, err := utils.NewAPIRegistrationClient(restConfig)
if err != nil {
return err
}
aaAPIServiceObjName := "v1alpha1.cluster.karmada.io"
aaAPIService := &apiregistrationv1.APIService{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "APIService",
},
ObjectMeta: metav1.ObjectMeta{
Name: aaAPIServiceObjName,
Labels: map[string]string{"app": "karmada-aggregated-apiserver", "apiserver": "true"},
},
Spec: apiregistrationv1.APIServiceSpec{
InsecureSkipTLSVerify: true,
Group: "cluster.karmada.io",
GroupPriorityMinimum: 2000,
Service: &apiregistrationv1.ServiceReference{
Name: "karmada-aggregated-apiserver",
Namespace: namespace,
},
Version: "v1alpha1",
VersionPriority: 10,
},
}
allAPIService, err := apiRegistrationClient.ApiregistrationV1().APIServices().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return err
}
// Update if it exists.
for _, v := range allAPIService.Items {
if v.Name == aaAPIServiceObjName {
klog.Infof("Update APIService '%s'", aaAPIServiceObjName)
aaAPIService.ObjectMeta.ResourceVersion = v.ResourceVersion
if _, err := apiRegistrationClient.ApiregistrationV1().APIServices().Update(context.TODO(), aaAPIService, metav1.UpdateOptions{}); err != nil {
return err
}
return nil
}
}
klog.Infof("Create APIService '%s'", aaAPIServiceObjName)
if _, err := apiRegistrationClient.ApiregistrationV1().APIServices().Create(context.TODO(), aaAPIService, metav1.CreateOptions{}); err != nil {
return err
}
return nil
}