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virtual_garden_access.go
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virtual_garden_access.go
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// Copyright 2023 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rotation
import (
"context"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
corev1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/test/utils/access"
)
type clients struct {
accessSecret, clientCert, serviceAccountDynamic kubernetes.Interface
}
// VirtualGardenAccessVerifier uses the various access methods to access the virtual garden.
type VirtualGardenAccessVerifier struct {
RuntimeClient client.Client
Namespace string
clientsBefore, clientsPrepared, clientsAfter clients
}
// Before is called before the rotation is started.
func (v *VirtualGardenAccessVerifier) Before(ctx context.Context) {
var err error
v.clientsBefore.accessSecret, err = kubernetes.NewClientFromSecret(ctx, v.RuntimeClient, v.Namespace, "gardener", kubernetes.WithDisabledCachedClient())
Expect(err).NotTo(HaveOccurred())
By("Request new client certificate and using it to access virtual garden")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromCSR(ctx, v.clientsBefore.accessSecret, "e2e-rotate-csr-before")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsBefore.clientCert = virtualGardenClient
}).Should(Succeed())
By("Request new dynamic token for a ServiceAccount and using it to access target cluster")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromDynamicServiceAccountToken(ctx, v.clientsBefore.accessSecret, "e2e-rotate-sa-dynamic-before")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsBefore.serviceAccountDynamic = virtualGardenClient
}).Should(Succeed())
}
// ExpectPreparingStatus is called while waiting for the Preparing status.
func (v *VirtualGardenAccessVerifier) ExpectPreparingStatus(_ Gomega) {}
// AfterPrepared is called when the Shoot is in Prepared status.
func (v *VirtualGardenAccessVerifier) AfterPrepared(ctx context.Context) {
By("Use client certificate from before rotation to access target cluster")
Eventually(func(g Gomega) {
g.Expect(v.clientsBefore.clientCert.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
}).Should(Succeed())
By("Use dynamic ServiceAccount token from before rotation to access target cluster")
Eventually(func(g Gomega) {
g.Expect(v.clientsBefore.serviceAccountDynamic.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
}).Should(Succeed())
var err error
v.clientsPrepared.accessSecret, err = kubernetes.NewClientFromSecret(ctx, v.RuntimeClient, v.Namespace, "gardener", kubernetes.WithDisabledCachedClient())
Expect(err).NotTo(HaveOccurred())
By("Request new client certificate and using it to access target cluster")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromCSR(ctx, v.clientsPrepared.accessSecret, "e2e-rotate-csr-prepared")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsPrepared.clientCert = virtualGardenClient
}).Should(Succeed())
By("Request new dynamic token for a ServiceAccount and using it to access target cluster")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromDynamicServiceAccountToken(ctx, v.clientsPrepared.accessSecret, "e2e-rotate-sa-dynamic-prepared")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsPrepared.serviceAccountDynamic = virtualGardenClient
}).Should(Succeed())
}
// ExpectCompletingStatus is called while waiting for the Completing status.
func (v *VirtualGardenAccessVerifier) ExpectCompletingStatus(_ Gomega) {}
// AfterCompleted is called when the Shoot is in Completed status.
func (v *VirtualGardenAccessVerifier) AfterCompleted(ctx context.Context) {
By("Use client certificate from before rotation to access target cluster")
Consistently(func(g Gomega) {
g.Expect(v.clientsBefore.clientCert.Client().List(ctx, &corev1.NamespaceList{})).NotTo(Succeed())
}).Should(Succeed())
By("Use dynamic ServiceAccount token from before rotation to access target cluster")
Consistently(func(g Gomega) {
g.Expect(v.clientsBefore.serviceAccountDynamic.Client().List(ctx, &corev1.NamespaceList{})).NotTo(Succeed())
}).Should(Succeed())
By("Use client certificate from after preparation to access target cluster")
Eventually(func(g Gomega) {
g.Expect(v.clientsPrepared.clientCert.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
}).Should(Succeed())
By("Use dynamic ServiceAccount token from after preparation to access target cluster")
Eventually(func(g Gomega) {
g.Expect(v.clientsPrepared.serviceAccountDynamic.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
}).Should(Succeed())
var err error
v.clientsAfter.accessSecret, err = kubernetes.NewClientFromSecret(ctx, v.RuntimeClient, v.Namespace, "gardener", kubernetes.WithDisabledCachedClient())
Expect(err).NotTo(HaveOccurred())
By("Request new client certificate and using it to access target cluster")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromCSR(ctx, v.clientsAfter.accessSecret, "e2e-rotate-csr-after")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsAfter.clientCert = virtualGardenClient
}).Should(Succeed())
By("Request new dynamic token for a ServiceAccount and using it to access target cluster")
Eventually(func(g Gomega) {
virtualGardenClient, err := access.CreateTargetClientFromDynamicServiceAccountToken(ctx, v.clientsAfter.accessSecret, "e2e-rotate-sa-dynamic-after")
g.Expect(err).NotTo(HaveOccurred())
g.Expect(virtualGardenClient.Client().List(ctx, &corev1.NamespaceList{})).To(Succeed())
v.clientsAfter.serviceAccountDynamic = virtualGardenClient
}).Should(Succeed())
}
// Cleanup is passed to ginkgo.DeferCleanup.
func (v *VirtualGardenAccessVerifier) Cleanup(ctx context.Context) {
virtualGardenClient, err := kubernetes.NewClientFromSecret(ctx, v.RuntimeClient, v.Namespace, "gardener", kubernetes.WithDisabledCachedClient())
Expect(err).NotTo(HaveOccurred())
By("Clean up objects in virtual garden from client certificate access")
Eventually(func(g Gomega) {
g.Expect(access.CleanupObjectsFromCSRAccess(ctx, virtualGardenClient)).To(Succeed())
}).Should(Succeed())
By("Clean up objects in virtual garden from dynamic ServiceAccount token access")
Eventually(func(g Gomega) {
g.Expect(access.CleanupObjectsFromDynamicServiceAccountTokenAccess(ctx, virtualGardenClient)).To(Succeed())
}).Should(Succeed())
}