Proxy connect get cluster impersonator secret use secretLister

Signed-off-by: huangyanfeng <huangyanfeng1992@gmail.com>

cmd/aggregated-apiserver/app/options/options.go

@@ -92,8 +92,9 @@ func (o *Options) Run(ctx context.Context) error {
 	restConfig := config.GenericConfig.ClientConfig
 	restConfig.QPS, restConfig.Burst = o.KubeAPIQPS, o.KubeAPIBurst
 	kubeClientSet := kubernetes.NewForConfigOrDie(restConfig)
+	secretLister := config.GenericConfig.SharedInformerFactory.Core().V1().Secrets().Lister()
 
-	server, err := config.Complete().New(kubeClientSet)
+	server, err := config.Complete().New(kubeClientSet, secretLister)
 	if err != nil {
 		return err
 	}

pkg/aggregatedapiserver/apiserver.go

@@ -5,6 +5,7 @@ import (
 	"k8s.io/apiserver/pkg/registry/rest"
 	genericapiserver "k8s.io/apiserver/pkg/server"
 	"k8s.io/client-go/kubernetes"
+	listcorev1 "k8s.io/client-go/listers/core/v1"
 	"k8s.io/klog/v2"
 
 	clusterapis "github.com/karmada-io/karmada/pkg/apis/cluster"
@@ -53,7 +54,7 @@ func (cfg *Config) Complete() CompletedConfig {
 	return CompletedConfig{&c}
 }
 
-func (c completedConfig) New(kubeClient kubernetes.Interface) (*APIServer, error) {
+func (c completedConfig) New(kubeClient kubernetes.Interface, secretLister listcorev1.SecretLister) (*APIServer, error) {
 	genericServer, err := c.GenericConfig.New("aggregated-apiserver", genericapiserver.NewEmptyDelegate())
 	if err != nil {
 		return nil, err
@@ -65,7 +66,7 @@ func (c completedConfig) New(kubeClient kubernetes.Interface) (*APIServer, error
 
 	apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(clusterapis.GroupName, clusterscheme.Scheme, clusterscheme.ParameterCodec, clusterscheme.Codecs)
 
-	clusterStorage, err := clusterstorage.NewStorage(clusterscheme.Scheme, kubeClient, c.GenericConfig.RESTOptionsGetter)
+	clusterStorage, err := clusterstorage.NewStorage(clusterscheme.Scheme, kubeClient, secretLister, c.GenericConfig.RESTOptionsGetter)
 	if err != nil {
 		klog.Errorf("Unable to create REST storage for a resource due to %v, will die", err)
 		return nil, err

pkg/registry/cluster/storage/proxy.go

@@ -10,6 +10,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apiserver/pkg/registry/rest"
 	"k8s.io/client-go/kubernetes"
+	listcorev1 "k8s.io/client-go/listers/core/v1"
 
 	clusterapis "github.com/karmada-io/karmada/pkg/apis/cluster"
 	"github.com/karmada-io/karmada/pkg/util/proxy"
@@ -18,6 +19,7 @@ import (
 // ProxyREST implements the proxy subresource for a Cluster.
 type ProxyREST struct {
 	kubeClient    kubernetes.Interface
+	secretLister  listcorev1.SecretLister
 	clusterGetter func(ctx context.Context, name string) (*clusterapis.Cluster, error)
 }
 
@@ -54,7 +56,15 @@ func (r *ProxyREST) Connect(ctx context.Context, id string, options runtime.Obje
 	}
 
 	secretGetter := func(ctx context.Context, namespace string, name string) (*corev1.Secret, error) {
-		return r.kubeClient.CoreV1().Secrets(namespace).Get(ctx, name, metav1.GetOptions{})
+		secret, err := r.secretLister.Secrets(namespace).Get(name)
+		if err != nil {
+			// fall back to call api server in case the cache has not been synchronized yet
+			secret, err = r.kubeClient.CoreV1().Secrets(namespace).Get(ctx, name, metav1.GetOptions{})
+			if err != nil {
+				return nil, err
+			}
+		}
+		return secret, nil
 	}
 	return proxy.ConnectCluster(ctx, cluster, proxyOpts.Path, secretGetter, responder)
 }

pkg/registry/cluster/storage/proxy_test.go

@@ -13,6 +13,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apiserver/pkg/authentication/user"
 	"k8s.io/apiserver/pkg/endpoints/request"
+	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/fake"
 
@@ -31,6 +32,7 @@ func TestProxyREST_Connect(t *testing.T) {
 	defer s.Close()
 
 	type fields struct {
+		secret        *corev1.Secret
 		kubeClient    kubernetes.Interface
 		clusterGetter func(ctx context.Context, name string) (*clusterapis.Cluster, error)
 	}
@@ -48,6 +50,10 @@ func TestProxyREST_Connect(t *testing.T) {
 		{
 			name: "options is invalid",
 			fields: fields{
+				secret: &corev1.Secret{
+					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
+					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
+				},
 				kubeClient: fake.NewSimpleClientset(&corev1.Secret{
 					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
 					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
@@ -72,6 +78,10 @@ func TestProxyREST_Connect(t *testing.T) {
 		{
 			name: "cluster not found",
 			fields: fields{
+				secret: &corev1.Secret{
+					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
+					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
+				},
 				kubeClient: fake.NewSimpleClientset(&corev1.Secret{
 					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
 					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
@@ -88,8 +98,9 @@ func TestProxyREST_Connect(t *testing.T) {
 			want:    "",
 		},
 		{
-			name: "proxy success",
+			name: "proxy success without secret cache",
 			fields: fields{
+				secret: &corev1.Secret{},
 				kubeClient: fake.NewSimpleClientset(&corev1.Secret{
 					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
 					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
@@ -111,19 +122,53 @@ func TestProxyREST_Connect(t *testing.T) {
 			wantErr: false,
 			want:    "ok",
 		},
+		{
+			name: "proxy success",
+			fields: fields{
+				secret: &corev1.Secret{
+					ObjectMeta: metav1.ObjectMeta{Name: "secret", Namespace: "ns"},
+					Data:       map[string][]byte{clusterapis.SecretTokenKey: []byte("token")},
+				},
+				kubeClient: fake.NewSimpleClientset(),
+				clusterGetter: func(_ context.Context, name string) (*clusterapis.Cluster, error) {
+					return &clusterapis.Cluster{
+						ObjectMeta: metav1.ObjectMeta{Name: name},
+						Spec: clusterapis.ClusterSpec{
+							APIEndpoint:           s.URL,
+							ImpersonatorSecretRef: &clusterapis.LocalSecretReference{Namespace: "ns", Name: "secret"},
+						},
+					}, nil
+				},
+			},
+			args: args{
+				id:      "cluster",
+				options: &clusterapis.ClusterProxyOptions{Path: "/proxy"},
+			},
+			wantErr: false,
+			want:    "ok",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			stopCh := make(chan struct{})
+			defer close(stopCh)
+
 			req, err := http.NewRequestWithContext(request.WithUser(request.NewContext(), &user.DefaultInfo{}), http.MethodGet, "http://127.0.0.1/xxx", nil)
 			if err != nil {
 				t.Fatal(err)
 			}
 			resp := httptest.NewRecorder()
 
+			kubeFactory := informers.NewSharedInformerFactory(fake.NewSimpleClientset(tt.fields.secret), 0)
 			r := &ProxyREST{
+				secretLister:  kubeFactory.Core().V1().Secrets().Lister(),
 				kubeClient:    tt.fields.kubeClient,
 				clusterGetter: tt.fields.clusterGetter,
 			}
+
+			kubeFactory.Start(stopCh)
+			kubeFactory.WaitForCacheSync(stopCh)
+
 			h, err := r.Connect(req.Context(), tt.args.id, tt.args.options, utiltest.NewResponder(resp))
 			if (err != nil) != tt.wantErr {
 				t.Errorf("Connect() error = %v, wantErr %v", err, tt.wantErr)

pkg/registry/cluster/storage/storage.go

@@ -12,6 +12,7 @@ import (
 	genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
 	"k8s.io/apiserver/pkg/registry/rest"
 	"k8s.io/client-go/kubernetes"
+	listcorev1 "k8s.io/client-go/listers/core/v1"
 	"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
 
 	clusterapis "github.com/karmada-io/karmada/pkg/apis/cluster"
@@ -30,7 +31,7 @@ type ClusterStorage struct {
 }
 
 // NewStorage returns a ClusterStorage object that will work against clusters.
-func NewStorage(scheme *runtime.Scheme, kubeClient kubernetes.Interface, optsGetter generic.RESTOptionsGetter) (*ClusterStorage, error) {
+func NewStorage(scheme *runtime.Scheme, kubeClient kubernetes.Interface, secretLister listcorev1.SecretLister, optsGetter generic.RESTOptionsGetter) (*ClusterStorage, error) {
 	strategy := clusterregistry.NewStrategy(scheme)
 
 	store := &genericregistry.Store{
@@ -63,6 +64,7 @@ func NewStorage(scheme *runtime.Scheme, kubeClient kubernetes.Interface, optsGet
 		Status:  &StatusREST{&statusStore},
 		Proxy: &ProxyREST{
 			kubeClient:    kubeClient,
+			secretLister:  secretLister,
 			clusterGetter: clusterRest.getCluster,
 		},
 	}, nil