263 lines
8.6 KiB
Go
263 lines
8.6 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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"testing"
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"time"
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"k8s.io/api/core/v1"
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"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/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/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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fakeImageName = "fake-name"
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fakeImage = "fakeimage"
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)
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var pauseFn = func(update *v1beta1.Deployment) {
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update.Spec.Paused = true
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}
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var resumeFn = func(update *v1beta1.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 *v1beta1.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) *v1beta1.Deployment {
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return &v1beta1.Deployment{
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TypeMeta: metav1.TypeMeta{
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Kind: "Deployment",
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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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},
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Spec: v1beta1.DeploymentSpec{
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Replicas: &replicas,
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Selector: &metav1.LabelSelector{MatchLabels: testLabels()},
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Strategy: v1beta1.DeploymentStrategy{
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Type: v1beta1.RollingUpdateDeploymentStrategyType,
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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: fakeImageName,
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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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// 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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dc := deployment.NewDeploymentController(
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informers.Extensions().V1beta1().Deployments(),
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informers.Extensions().V1beta1().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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rm := replicaset.NewReplicaSetController(
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informers.Extensions().V1beta1().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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// markAllPodsReady manually updates all Deployment pods status to ready
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func (d *deploymentTester) markAllPodsReady() {
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ns := d.deployment.Namespace
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selector, err := metav1.LabelSelectorAsSelector(d.deployment.Spec.Selector)
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if err != nil {
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d.t.Fatalf("failed to parse Deployment selector: %v", err)
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}
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var readyPods int32
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err = wait.PollImmediate(pollInterval, pollTimeout, func() (bool, error) {
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readyPods = 0
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pods, err := d.c.Core().Pods(ns).List(metav1.ListOptions{LabelSelector: selector.String()})
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if err != nil {
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d.t.Logf("failed to list Deployment pods, will retry later: %v", err)
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return false, nil
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}
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for i := range pods.Items {
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pod := pods.Items[i]
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if podutil.IsPodReady(&pod) {
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readyPods++
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continue
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}
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addPodConditionReady(&pod, metav1.Now())
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if _, err = d.c.Core().Pods(ns).UpdateStatus(&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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} else {
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readyPods++
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}
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}
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if readyPods >= *d.deployment.Spec.Replicas {
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return true, nil
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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 all Deployment pods to ready: %v", err)
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}
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}
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func (d *deploymentTester) waitForDeploymentStatusValid() error {
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return testutil.WaitForDeploymentStatusValid(d.c, d.deployment, d.t.Logf, pollInterval, pollTimeout)
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}
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// waitForDeploymentStatusValidAndMarkPodsReady waits for the Deployment status to become valid
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// while marking all Deployment pods as ready at the same time.
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func (d *deploymentTester) waitForDeploymentStatusValidAndMarkPodsReady() error {
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// Manually mark all Deployment pods as ready in a separate goroutine
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go d.markAllPodsReady()
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// Make sure the Deployment status is valid while Deployment pods are becoming ready
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err := d.waitForDeploymentStatusValid()
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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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return nil
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}
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func (d *deploymentTester) updateDeployment(applyUpdate testutil.UpdateDeploymentFunc) (*v1beta1.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() (*v1beta1.ReplicaSet, error) {
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rs, err := deploymentutil.GetNewReplicaSet(d.deployment, d.c.ExtensionsV1beta1())
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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() (*v1beta1.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) (*v1beta1.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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