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observability.go
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observability.go
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// Copyright 2022 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 (
"bytes"
"context"
"crypto/tls"
"encoding/base64"
"net/http"
"time"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
corev1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
gardenerutils "github.com/gardener/gardener/pkg/utils/gardener"
"github.com/gardener/gardener/test/framework"
)
// ObservabilityVerifier verifies the observability credentials rotation.
type ObservabilityVerifier struct {
*framework.ShootCreationFramework
observabilityEndpoint string
oldKeypairData map[string][]byte
}
// Before is called before the rotation is started.
func (v *ObservabilityVerifier) Before(ctx context.Context) {
By("Verify old observability secret")
secret := &corev1.Secret{}
Eventually(func(g Gomega) {
g.Expect(v.GardenClient.Client().Get(ctx, client.ObjectKey{Namespace: v.Shoot.Namespace, Name: gardenerutils.ComputeShootProjectSecretName(v.Shoot.Name, "monitoring")}, secret)).To(Succeed())
g.Expect(secret.Data).To(And(
HaveKeyWithValue("username", Not(BeEmpty())),
HaveKeyWithValue("password", Not(BeEmpty())),
))
v.observabilityEndpoint = secret.Annotations["url"]
v.oldKeypairData = secret.Data
}).Should(Succeed(), "old observability secret should be present")
By("Use old credentials to access observability endpoint")
Eventually(func(g Gomega) {
response, err := v.accessEndpoint(ctx, v.observabilityEndpoint, v.oldKeypairData["username"], v.oldKeypairData["password"])
g.Expect(err).NotTo(HaveOccurred())
g.Expect(response.StatusCode).To(Equal(http.StatusOK))
}).Should(Succeed())
}
// ExpectPreparingStatus is called while waiting for the Preparing status.
func (v *ObservabilityVerifier) ExpectPreparingStatus(g Gomega) {
g.Expect(time.Now().UTC().Sub(v.Shoot.Status.Credentials.Rotation.Observability.LastInitiationTime.Time.UTC())).To(BeNumerically("<=", time.Minute))
}
// AfterPrepared is called when the Shoot is in Prepared status.
func (v *ObservabilityVerifier) AfterPrepared(ctx context.Context) {
observabilityRotation := v.Shoot.Status.Credentials.Rotation.Observability
Expect(observabilityRotation.LastCompletionTime.Time.UTC().After(observabilityRotation.LastInitiationTime.Time.UTC())).To(BeTrue())
By("Use old credentials to access observability endpoint")
Consistently(func(g Gomega) {
response, err := v.accessEndpoint(ctx, v.observabilityEndpoint, v.oldKeypairData["username"], v.oldKeypairData["password"])
g.Expect(err).NotTo(HaveOccurred())
g.Expect(response.StatusCode).To(Equal(http.StatusUnauthorized))
}).Should(Succeed())
By("Verify new observability secret")
secret := &corev1.Secret{}
Eventually(func(g Gomega) {
g.Expect(v.GardenClient.Client().Get(ctx, client.ObjectKey{Namespace: v.Shoot.Namespace, Name: gardenerutils.ComputeShootProjectSecretName(v.Shoot.Name, "monitoring")}, secret)).To(Succeed())
g.Expect(secret.Data).To(And(
HaveKeyWithValue("username", Equal(v.oldKeypairData["username"])),
HaveKeyWithValue("password", Not(Equal(v.oldKeypairData["password"]))),
))
}).Should(Succeed(), "observability secret should have been rotated")
By("Use new credentials to access observability endpoint")
Eventually(func(g Gomega) {
response, err := v.accessEndpoint(ctx, v.observabilityEndpoint, secret.Data["username"], secret.Data["password"])
g.Expect(err).NotTo(HaveOccurred())
g.Expect(response.StatusCode).To(Equal(http.StatusOK))
}).Should(Succeed())
}
// observability credentials rotation is completed after one reconciliation (there is no second phase)
// hence, there is nothing to check in the second part of the credentials rotation
// ExpectCompletingStatus is called while waiting for the Completing status.
func (v *ObservabilityVerifier) ExpectCompletingStatus(g Gomega) {}
// AfterCompleted is called when the Shoot is in Completed status.
func (v *ObservabilityVerifier) AfterCompleted(ctx context.Context) {}
func (v *ObservabilityVerifier) accessEndpoint(ctx context.Context, url string, username, password []byte) (*http.Response, error) {
httpClient := &http.Client{
Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
},
}
request, err := http.NewRequestWithContext(ctx, "GET", url+":8448", nil)
if err != nil {
return nil, err
}
request.Header.Add("Authorization", "Basic "+base64.StdEncoding.EncodeToString(bytes.Join([][]byte{username, password}, []byte(":"))))
return httpClient.Do(request)
}