mirror of
https://github.com/ceph/ceph-csi.git
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510 lines
18 KiB
Go
510 lines
18 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package deployment
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import (
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"fmt"
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"net/http/httptest"
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"sync"
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"testing"
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"time"
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apps "k8s.io/api/apps/v1"
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"k8s.io/api/core/v1"
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extensions "k8s.io/api/extensions/v1beta1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/intstr"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/informers"
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clientset "k8s.io/client-go/kubernetes"
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restclient "k8s.io/client-go/rest"
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podutil "k8s.io/kubernetes/pkg/api/v1/pod"
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"k8s.io/kubernetes/pkg/controller/deployment"
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deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
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"k8s.io/kubernetes/pkg/controller/replicaset"
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"k8s.io/kubernetes/pkg/util/metrics"
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"k8s.io/kubernetes/test/integration/framework"
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testutil "k8s.io/kubernetes/test/utils"
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)
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const (
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pollInterval = 100 * time.Millisecond
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pollTimeout = 60 * time.Second
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fakeContainerName = "fake-name"
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fakeImage = "fakeimage"
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)
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var pauseFn = func(update *apps.Deployment) {
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update.Spec.Paused = true
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}
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var resumeFn = func(update *apps.Deployment) {
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update.Spec.Paused = false
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}
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type deploymentTester struct {
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t *testing.T
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c clientset.Interface
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deployment *apps.Deployment
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}
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func testLabels() map[string]string {
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return map[string]string{"name": "test"}
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}
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// newDeployment returns a RollingUpdate Deployment with with a fake container image
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func newDeployment(name, ns string, replicas int32) *apps.Deployment {
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return &apps.Deployment{
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TypeMeta: metav1.TypeMeta{
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Kind: "Deployment",
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APIVersion: "apps/v1",
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},
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ObjectMeta: metav1.ObjectMeta{
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Namespace: ns,
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Name: name,
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},
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Spec: apps.DeploymentSpec{
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Replicas: &replicas,
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Selector: &metav1.LabelSelector{MatchLabels: testLabels()},
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Strategy: apps.DeploymentStrategy{
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Type: apps.RollingUpdateDeploymentStrategyType,
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RollingUpdate: new(apps.RollingUpdateDeployment),
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},
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Template: v1.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Labels: testLabels(),
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: fakeContainerName,
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Image: fakeImage,
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},
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},
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},
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},
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},
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}
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}
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func newReplicaSet(name, ns string, replicas int32) *apps.ReplicaSet {
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return &apps.ReplicaSet{
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TypeMeta: metav1.TypeMeta{
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Kind: "ReplicaSet",
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APIVersion: "extensions/v1beta1",
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},
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ObjectMeta: metav1.ObjectMeta{
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Namespace: ns,
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Name: name,
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Labels: testLabels(),
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},
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Spec: apps.ReplicaSetSpec{
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Selector: &metav1.LabelSelector{
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MatchLabels: testLabels(),
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},
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Replicas: &replicas,
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Template: v1.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Labels: testLabels(),
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: fakeContainerName,
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Image: fakeImage,
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},
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},
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},
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},
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},
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}
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}
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func newDeploymentRollback(name string, annotations map[string]string, revision int64) *extensions.DeploymentRollback {
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return &extensions.DeploymentRollback{
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Name: name,
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UpdatedAnnotations: annotations,
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RollbackTo: extensions.RollbackConfig{Revision: revision},
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}
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}
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// dcSetup sets up necessities for Deployment integration test, including master, apiserver, informers, and clientset
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func dcSetup(t *testing.T) (*httptest.Server, framework.CloseFunc, *replicaset.ReplicaSetController, *deployment.DeploymentController, informers.SharedInformerFactory, clientset.Interface) {
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masterConfig := framework.NewIntegrationTestMasterConfig()
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_, s, closeFn := framework.RunAMaster(masterConfig)
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config := restclient.Config{Host: s.URL}
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clientSet, err := clientset.NewForConfig(&config)
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if err != nil {
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t.Fatalf("error in create clientset: %v", err)
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}
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resyncPeriod := 12 * time.Hour
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informers := informers.NewSharedInformerFactory(clientset.NewForConfigOrDie(restclient.AddUserAgent(&config, "deployment-informers")), resyncPeriod)
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metrics.UnregisterMetricAndUntrackRateLimiterUsage("deployment_controller")
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dc, err := deployment.NewDeploymentController(
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informers.Apps().V1().Deployments(),
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informers.Apps().V1().ReplicaSets(),
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informers.Core().V1().Pods(),
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clientset.NewForConfigOrDie(restclient.AddUserAgent(&config, "deployment-controller")),
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)
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if err != nil {
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t.Fatalf("error creating Deployment controller: %v", err)
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}
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rm := replicaset.NewReplicaSetController(
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informers.Apps().V1().ReplicaSets(),
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informers.Core().V1().Pods(),
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clientset.NewForConfigOrDie(restclient.AddUserAgent(&config, "replicaset-controller")),
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replicaset.BurstReplicas,
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)
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return s, closeFn, rm, dc, informers, clientSet
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}
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// dcSimpleSetup sets up necessities for Deployment integration test, including master, apiserver,
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// and clientset, but not controllers and informers
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func dcSimpleSetup(t *testing.T) (*httptest.Server, framework.CloseFunc, clientset.Interface) {
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masterConfig := framework.NewIntegrationTestMasterConfig()
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_, s, closeFn := framework.RunAMaster(masterConfig)
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config := restclient.Config{Host: s.URL}
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clientSet, err := clientset.NewForConfig(&config)
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if err != nil {
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t.Fatalf("error in create clientset: %v", err)
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}
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return s, closeFn, clientSet
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}
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// addPodConditionReady sets given pod status to ready at given time
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func addPodConditionReady(pod *v1.Pod, time metav1.Time) {
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pod.Status = v1.PodStatus{
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Phase: v1.PodRunning,
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Conditions: []v1.PodCondition{
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{
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Type: v1.PodReady,
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Status: v1.ConditionTrue,
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LastTransitionTime: time,
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},
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},
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}
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}
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func (d *deploymentTester) waitForDeploymentRevisionAndImage(revision, image string) error {
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if err := testutil.WaitForDeploymentRevisionAndImage(d.c, d.deployment.Namespace, d.deployment.Name, revision, image, d.t.Logf, pollInterval, pollTimeout); err != nil {
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return fmt.Errorf("failed to wait for Deployment revision %s: %v", d.deployment.Name, err)
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}
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return nil
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}
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func markPodReady(c clientset.Interface, ns string, pod *v1.Pod) error {
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addPodConditionReady(pod, metav1.Now())
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_, err := c.CoreV1().Pods(ns).UpdateStatus(pod)
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return err
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}
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func intOrStrP(num int) *intstr.IntOrString {
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intstr := intstr.FromInt(num)
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return &intstr
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}
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// markUpdatedPodsReady manually marks updated Deployment pods status to ready,
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// until the deployment is complete
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func (d *deploymentTester) markUpdatedPodsReady(wg *sync.WaitGroup) {
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defer wg.Done()
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ns := d.deployment.Namespace
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err := wait.PollImmediate(pollInterval, pollTimeout, func() (bool, error) {
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// We're done when the deployment is complete
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if completed, err := d.deploymentComplete(); err != nil {
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return false, err
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} else if completed {
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return true, nil
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}
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// Otherwise, mark remaining pods as ready
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pods, err := d.listUpdatedPods()
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if err != nil {
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d.t.Log(err)
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return false, nil
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}
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d.t.Logf("%d/%d of deployment pods are created", len(pods), *d.deployment.Spec.Replicas)
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for i := range pods {
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pod := pods[i]
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if podutil.IsPodReady(&pod) {
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continue
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}
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if err = markPodReady(d.c, ns, &pod); err != nil {
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d.t.Logf("failed to update Deployment pod %s, will retry later: %v", pod.Name, err)
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}
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}
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return false, nil
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})
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if err != nil {
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d.t.Fatalf("failed to mark updated Deployment pods to ready: %v", err)
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}
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}
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func (d *deploymentTester) deploymentComplete() (bool, error) {
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latest, err := d.c.AppsV1().Deployments(d.deployment.Namespace).Get(d.deployment.Name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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return deploymentutil.DeploymentComplete(d.deployment, &latest.Status), nil
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}
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// Waits for the deployment to complete, and check rolling update strategy isn't broken at any times.
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// Rolling update strategy should not be broken during a rolling update.
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func (d *deploymentTester) waitForDeploymentCompleteAndCheckRolling() error {
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return testutil.WaitForDeploymentCompleteAndCheckRolling(d.c, d.deployment, d.t.Logf, pollInterval, pollTimeout)
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}
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// Waits for the deployment to complete, and don't check if rolling update strategy is broken.
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// Rolling update strategy is used only during a rolling update, and can be violated in other situations,
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// such as shortly after a scaling event or the deployment is just created.
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func (d *deploymentTester) waitForDeploymentComplete() error {
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return testutil.WaitForDeploymentComplete(d.c, d.deployment, d.t.Logf, pollInterval, pollTimeout)
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}
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// waitForDeploymentCompleteAndCheckRollingAndMarkPodsReady waits for the Deployment to complete
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// while marking updated Deployment pods as ready at the same time.
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// Uses hard check to make sure rolling update strategy is not violated at any times.
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func (d *deploymentTester) waitForDeploymentCompleteAndCheckRollingAndMarkPodsReady() error {
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var wg sync.WaitGroup
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// Manually mark updated Deployment pods as ready in a separate goroutine
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wg.Add(1)
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go d.markUpdatedPodsReady(&wg)
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// Wait for goroutine to finish, for all return paths.
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defer wg.Wait()
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// Wait for the Deployment status to complete while Deployment pods are becoming ready
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err := d.waitForDeploymentCompleteAndCheckRolling()
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if err != nil {
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return fmt.Errorf("failed to wait for Deployment %s to complete: %v", d.deployment.Name, err)
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}
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return nil
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}
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// waitForDeploymentCompleteAndMarkPodsReady waits for the Deployment to complete
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// while marking updated Deployment pods as ready at the same time.
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func (d *deploymentTester) waitForDeploymentCompleteAndMarkPodsReady() error {
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var wg sync.WaitGroup
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// Manually mark updated Deployment pods as ready in a separate goroutine
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wg.Add(1)
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go d.markUpdatedPodsReady(&wg)
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// Wait for the Deployment status to complete using soft check, while Deployment pods are becoming ready
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err := d.waitForDeploymentComplete()
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if err != nil {
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return fmt.Errorf("failed to wait for Deployment status %s: %v", d.deployment.Name, err)
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}
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// Wait for goroutine to finish
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wg.Wait()
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return nil
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}
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func (d *deploymentTester) updateDeployment(applyUpdate testutil.UpdateDeploymentFunc) (*apps.Deployment, error) {
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return testutil.UpdateDeploymentWithRetries(d.c, d.deployment.Namespace, d.deployment.Name, applyUpdate, d.t.Logf, pollInterval, pollTimeout)
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}
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func (d *deploymentTester) waitForObservedDeployment(desiredGeneration int64) error {
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if err := testutil.WaitForObservedDeployment(d.c, d.deployment.Namespace, d.deployment.Name, desiredGeneration); err != nil {
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return fmt.Errorf("failed waiting for ObservedGeneration of deployment %s to become %d: %v", d.deployment.Name, desiredGeneration, err)
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}
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return nil
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}
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func (d *deploymentTester) getNewReplicaSet() (*apps.ReplicaSet, error) {
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deployment, err := d.c.AppsV1().Deployments(d.deployment.Namespace).Get(d.deployment.Name, metav1.GetOptions{})
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if err != nil {
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return nil, fmt.Errorf("failed retrieving deployment %s: %v", d.deployment.Name, err)
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}
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rs, err := deploymentutil.GetNewReplicaSet(deployment, d.c.AppsV1())
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if err != nil {
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return nil, fmt.Errorf("failed retrieving new replicaset of deployment %s: %v", d.deployment.Name, err)
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}
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return rs, nil
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}
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func (d *deploymentTester) expectNoNewReplicaSet() error {
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rs, err := d.getNewReplicaSet()
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if err != nil {
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return err
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}
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if rs != nil {
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return fmt.Errorf("expected deployment %s not to create a new replicaset, got %v", d.deployment.Name, rs)
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}
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return nil
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}
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func (d *deploymentTester) expectNewReplicaSet() (*apps.ReplicaSet, error) {
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rs, err := d.getNewReplicaSet()
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if err != nil {
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return nil, err
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}
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if rs == nil {
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return nil, fmt.Errorf("expected deployment %s to create a new replicaset, got nil", d.deployment.Name)
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}
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return rs, nil
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}
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func (d *deploymentTester) updateReplicaSet(name string, applyUpdate testutil.UpdateReplicaSetFunc) (*apps.ReplicaSet, error) {
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return testutil.UpdateReplicaSetWithRetries(d.c, d.deployment.Namespace, name, applyUpdate, d.t.Logf, pollInterval, pollTimeout)
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}
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func (d *deploymentTester) updateReplicaSetStatus(name string, applyStatusUpdate testutil.UpdateReplicaSetFunc) (*apps.ReplicaSet, error) {
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return testutil.UpdateReplicaSetStatusWithRetries(d.c, d.deployment.Namespace, name, applyStatusUpdate, d.t.Logf, pollInterval, pollTimeout)
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}
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// waitForDeploymentRollbackCleared waits for deployment either started rolling back or doesn't need to rollback.
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func (d *deploymentTester) waitForDeploymentRollbackCleared() error {
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return testutil.WaitForDeploymentRollbackCleared(d.c, d.deployment.Namespace, d.deployment.Name, pollInterval, pollTimeout)
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}
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// checkDeploymentRevisionAndImage checks if the input deployment's and its new replica set's revision and image are as expected.
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func (d *deploymentTester) checkDeploymentRevisionAndImage(revision, image string) error {
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return testutil.CheckDeploymentRevisionAndImage(d.c, d.deployment.Namespace, d.deployment.Name, revision, image)
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}
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func (d *deploymentTester) waitForDeploymentUpdatedReplicasGTE(minUpdatedReplicas int32) error {
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return testutil.WaitForDeploymentUpdatedReplicasGTE(d.c, d.deployment.Namespace, d.deployment.Name, minUpdatedReplicas, d.deployment.Generation, pollInterval, pollTimeout)
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}
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func (d *deploymentTester) waitForDeploymentWithCondition(reason string, condType apps.DeploymentConditionType) error {
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return testutil.WaitForDeploymentWithCondition(d.c, d.deployment.Namespace, d.deployment.Name, reason, condType, d.t.Logf, pollInterval, pollTimeout)
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}
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func (d *deploymentTester) listUpdatedPods() ([]v1.Pod, error) {
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selector, err := metav1.LabelSelectorAsSelector(d.deployment.Spec.Selector)
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if err != nil {
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return nil, fmt.Errorf("failed to parse deployment selector: %v", err)
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}
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pods, err := d.c.CoreV1().Pods(d.deployment.Namespace).List(metav1.ListOptions{LabelSelector: selector.String()})
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if err != nil {
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return nil, fmt.Errorf("failed to list deployment pods, will retry later: %v", err)
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}
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newRS, err := d.getNewReplicaSet()
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if err != nil {
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return nil, fmt.Errorf("failed to get new replicaset of deployment %q: %v", d.deployment.Name, err)
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}
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if newRS == nil {
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return nil, fmt.Errorf("unable to find new replicaset of deployment %q", d.deployment.Name)
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}
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var ownedPods []v1.Pod
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for _, pod := range pods.Items {
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rs := metav1.GetControllerOf(&pod)
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if rs.UID == newRS.UID {
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ownedPods = append(ownedPods, pod)
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}
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}
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return ownedPods, nil
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}
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func (d *deploymentTester) waitRSStable(replicaset *apps.ReplicaSet) error {
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return testutil.WaitRSStable(d.t, d.c, replicaset, pollInterval, pollTimeout)
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}
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func (d *deploymentTester) scaleDeployment(newReplicas int32) error {
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var err error
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d.deployment, err = d.updateDeployment(func(update *apps.Deployment) {
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update.Spec.Replicas = &newReplicas
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})
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if err != nil {
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return fmt.Errorf("failed updating deployment %q: %v", d.deployment.Name, err)
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}
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if err := d.waitForDeploymentCompleteAndMarkPodsReady(); err != nil {
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return err
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}
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rs, err := d.expectNewReplicaSet()
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if err != nil {
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return err
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}
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if *rs.Spec.Replicas != newReplicas {
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return fmt.Errorf("expected new replicaset replicas = %d, got %d", newReplicas, *rs.Spec.Replicas)
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}
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return nil
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}
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// waitForReadyReplicas waits for number of ready replicas to equal number of replicas.
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func (d *deploymentTester) waitForReadyReplicas() error {
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if err := wait.PollImmediate(pollInterval, pollTimeout, func() (bool, error) {
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deployment, err := d.c.AppsV1().Deployments(d.deployment.Namespace).Get(d.deployment.Name, metav1.GetOptions{})
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if err != nil {
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return false, fmt.Errorf("failed to get deployment %q: %v", d.deployment.Name, err)
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}
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return deployment.Status.ReadyReplicas == *deployment.Spec.Replicas, nil
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}); err != nil {
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return fmt.Errorf("failed to wait for .readyReplicas to equal .replicas: %v", err)
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}
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return nil
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}
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|
|
|
// markUpdatedPodsReadyWithoutComplete marks updated Deployment pods as ready without waiting for deployment to complete.
|
|
func (d *deploymentTester) markUpdatedPodsReadyWithoutComplete() error {
|
|
if err := wait.PollImmediate(pollInterval, pollTimeout, func() (bool, error) {
|
|
pods, err := d.listUpdatedPods()
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
for i := range pods {
|
|
pod := pods[i]
|
|
if podutil.IsPodReady(&pod) {
|
|
continue
|
|
}
|
|
if err = markPodReady(d.c, d.deployment.Namespace, &pod); err != nil {
|
|
d.t.Logf("failed to update Deployment pod %q, will retry later: %v", pod.Name, err)
|
|
return false, nil
|
|
}
|
|
}
|
|
return true, nil
|
|
}); err != nil {
|
|
return fmt.Errorf("failed to mark all updated pods as ready: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Verify all replicas fields of DeploymentStatus have desired count.
|
|
// Immediately return an error when found a non-matching replicas field.
|
|
func (d *deploymentTester) checkDeploymentStatusReplicasFields(replicas, updatedReplicas, readyReplicas, availableReplicas, unavailableReplicas int32) error {
|
|
deployment, err := d.c.AppsV1().Deployments(d.deployment.Namespace).Get(d.deployment.Name, metav1.GetOptions{})
|
|
if err != nil {
|
|
return fmt.Errorf("failed to get deployment %q: %v", d.deployment.Name, err)
|
|
}
|
|
if deployment.Status.Replicas != replicas {
|
|
return fmt.Errorf("unexpected .replicas: expect %d, got %d", replicas, deployment.Status.Replicas)
|
|
}
|
|
if deployment.Status.UpdatedReplicas != updatedReplicas {
|
|
return fmt.Errorf("unexpected .updatedReplicas: expect %d, got %d", updatedReplicas, deployment.Status.UpdatedReplicas)
|
|
}
|
|
if deployment.Status.ReadyReplicas != readyReplicas {
|
|
return fmt.Errorf("unexpected .readyReplicas: expect %d, got %d", readyReplicas, deployment.Status.ReadyReplicas)
|
|
}
|
|
if deployment.Status.AvailableReplicas != availableReplicas {
|
|
return fmt.Errorf("unexpected .replicas: expect %d, got %d", availableReplicas, deployment.Status.AvailableReplicas)
|
|
}
|
|
if deployment.Status.UnavailableReplicas != unavailableReplicas {
|
|
return fmt.Errorf("unexpected .replicas: expect %d, got %d", unavailableReplicas, deployment.Status.UnavailableReplicas)
|
|
}
|
|
return nil
|
|
}
|