/
metrics.go
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/
metrics.go
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// Copyright (c) 2020 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.
/**
Overview
- Tests that runtime metrics are available
AfterSuite
- Cleanup Workload in Shoot
Test: Create arbitrary deployment
Expected Output
- Metrics are available
**/
package applications
import (
"context"
"errors"
"fmt"
"time"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
"github.com/gardener/gardener/pkg/utils/retry"
"github.com/gardener/gardener/test/framework"
"github.com/onsi/ginkgo/v2"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
metricsv1beta1 "k8s.io/metrics/pkg/apis/metrics/v1beta1"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/gardener/gardener/test/framework/resources/templates"
)
const (
metricsTestTimeout = 10 * time.Minute
)
var _ = ginkgo.Describe("Shoot application metrics testing", func() {
f := framework.NewShootFramework(&framework.ShootConfig{
CreateTestNamespace: true,
})
var (
name = "metrics-test"
)
f.Default().CIt("should read runtime metrics", func(ctx context.Context) {
templateParams := map[string]string{
"name": name,
"namespace": f.Namespace,
}
err := f.RenderAndDeployTemplate(ctx, f.ShootClient, templates.SimpleLoadDeploymentName, templateParams)
framework.ExpectNoError(err)
err = f.WaitUntilDeploymentIsReady(ctx, name, f.Namespace, f.ShootClient)
framework.ExpectNoError(err)
pods := &corev1.PodList{}
err = f.ShootClient.Client().List(ctx, pods, client.InNamespace(f.Namespace), client.MatchingLabels{"app": "load"})
framework.ExpectNoError(err)
if len(pods.Items) == 0 {
ginkgo.Fail("at least one pod is needed")
}
podName := pods.Items[0].Name
ginkgo.By("Check runtime metrics")
framework.ExpectNoError(
retry.Until(ctx, 30*time.Second, func(ctx context.Context) (bool, error) {
podMetrics := &metricsv1beta1.PodMetrics{}
if err := f.ShootClient.Client().Get(ctx, kutil.Key(f.Namespace, podName), podMetrics); err != nil {
if apierrors.IsNotFound(err) || meta.IsNoMatchError(err) || apierrors.IsServiceUnavailable(err) {
f.Logger.Infof("No metrics for pod %s/%s available yet: %v", f.Namespace, podName, err)
return retry.MinorError(err)
}
return retry.SevereError(err)
}
if len(podMetrics.Containers) == 0 {
return retry.MinorError(errors.New("no metrics recorded yet"))
}
for _, container := range podMetrics.Containers {
if container.Usage.Cpu() == nil {
return retry.MinorError(fmt.Errorf("no CPU metrics recorded yet for container %q", container.Name))
}
if container.Usage.Memory() == nil {
return retry.MinorError(fmt.Errorf("no Memory metrics recorded yet for container %q", container.Name))
}
}
return retry.Ok()
}),
)
}, metricsTestTimeout, framework.WithCAfterTest(func(ctx context.Context) {
ginkgo.By("cleanup metrics test deployment")
err := f.ShootClient.Client().Delete(ctx, &appsv1.Deployment{ObjectMeta: metav1.ObjectMeta{Name: name, Namespace: f.Namespace}})
framework.ExpectNoError(client.IgnoreNotFound(err))
}, cleanupTimeout))
})