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387 lines
11 KiB
Go
387 lines
11 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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"reflect"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
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"k8s.io/kubernetes/pkg/client/testing/core"
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"k8s.io/kubernetes/pkg/client/unversioned/testclient"
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"k8s.io/kubernetes/pkg/runtime"
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)
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func addListRSReactor(fakeClient *fake.Clientset, obj runtime.Object) *fake.Clientset {
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fakeClient.AddReactor("list", "replicasets", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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return true, obj, nil
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})
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return fakeClient
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}
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func addListPodsReactor(fakeClient *fake.Clientset, obj runtime.Object) *fake.Clientset {
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fakeClient.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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return true, obj, nil
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})
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return fakeClient
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}
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func addUpdateRSReactor(fakeClient *fake.Clientset) *fake.Clientset {
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fakeClient.AddReactor("update", "replicasets", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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obj := action.(testclient.UpdateAction).GetObject().(*extensions.ReplicaSet)
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return true, obj, nil
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})
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return fakeClient
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}
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func addUpdatePodsReactor(fakeClient *fake.Clientset) *fake.Clientset {
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fakeClient.AddReactor("update", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
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obj := action.(testclient.UpdateAction).GetObject().(*api.Pod)
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return true, obj, nil
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})
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return fakeClient
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}
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func newPod(now time.Time, ready bool, beforeSec int) api.Pod {
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conditionStatus := api.ConditionFalse
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if ready {
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conditionStatus = api.ConditionTrue
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}
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return api.Pod{
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Status: api.PodStatus{
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Conditions: []api.PodCondition{
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{
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Type: api.PodReady,
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LastTransitionTime: unversioned.NewTime(now.Add(-1 * time.Duration(beforeSec) * time.Second)),
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Status: conditionStatus,
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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 TestGetReadyPodsCount(t *testing.T) {
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now := time.Now()
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tests := []struct {
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pods []api.Pod
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minReadySeconds int
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expected int
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}{
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{
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[]api.Pod{
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newPod(now, true, 0),
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newPod(now, true, 2),
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newPod(now, false, 1),
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},
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1,
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1,
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},
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{
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[]api.Pod{
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newPod(now, true, 2),
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newPod(now, true, 11),
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newPod(now, true, 5),
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},
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10,
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1,
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},
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}
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for _, test := range tests {
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if count := getReadyPodsCount(test.pods, test.minReadySeconds); count != test.expected {
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t.Errorf("Pods = %#v, minReadySeconds = %d, expected %d, got %d", test.pods, test.minReadySeconds, test.expected, count)
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}
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}
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}
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// generatePodFromRS creates a pod, with the input ReplicaSet's selector and its template
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func generatePodFromRS(rs extensions.ReplicaSet) api.Pod {
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return api.Pod{
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ObjectMeta: api.ObjectMeta{
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Labels: rs.Labels,
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},
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Spec: rs.Spec.Template.Spec,
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}
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}
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func generatePod(labels map[string]string, image string) api.Pod {
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return api.Pod{
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ObjectMeta: api.ObjectMeta{
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Labels: labels,
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: image,
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Image: image,
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ImagePullPolicy: api.PullAlways,
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TerminationMessagePath: api.TerminationMessagePathDefault,
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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 generateRSWithLabel(labels map[string]string, image string) extensions.ReplicaSet {
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return extensions.ReplicaSet{
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ObjectMeta: api.ObjectMeta{
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Name: api.SimpleNameGenerator.GenerateName("replicaset"),
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Labels: labels,
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},
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Spec: extensions.ReplicaSetSpec{
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Replicas: 1,
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Selector: &unversioned.LabelSelector{MatchLabels: labels},
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Template: &api.PodTemplateSpec{
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: image,
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Image: image,
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ImagePullPolicy: api.PullAlways,
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TerminationMessagePath: api.TerminationMessagePathDefault,
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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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// generateRS creates a replica set, with the input deployment's template as its template
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func generateRS(deployment extensions.Deployment) extensions.ReplicaSet {
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template := GetNewReplicaSetTemplate(deployment)
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return extensions.ReplicaSet{
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ObjectMeta: api.ObjectMeta{
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Name: api.SimpleNameGenerator.GenerateName("replicaset"),
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Labels: template.Labels,
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},
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Spec: extensions.ReplicaSetSpec{
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Template: &template,
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Selector: &unversioned.LabelSelector{MatchLabels: template.Labels},
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},
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}
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}
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// generateDeployment creates a deployment, with the input image as its template
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func generateDeployment(image string) extensions.Deployment {
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podLabels := map[string]string{"name": image}
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terminationSec := int64(30)
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return extensions.Deployment{
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ObjectMeta: api.ObjectMeta{
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Name: image,
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},
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Spec: extensions.DeploymentSpec{
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Replicas: 1,
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Selector: &unversioned.LabelSelector{MatchLabels: podLabels},
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Template: api.PodTemplateSpec{
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ObjectMeta: api.ObjectMeta{
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Labels: podLabels,
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: image,
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Image: image,
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ImagePullPolicy: api.PullAlways,
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TerminationMessagePath: api.TerminationMessagePathDefault,
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},
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},
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DNSPolicy: api.DNSClusterFirst,
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TerminationGracePeriodSeconds: &terminationSec,
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RestartPolicy: api.RestartPolicyAlways,
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SecurityContext: &api.PodSecurityContext{},
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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 TestGetNewRC(t *testing.T) {
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newDeployment := generateDeployment("nginx")
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newRC := generateRS(newDeployment)
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tests := []struct {
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test string
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objs []runtime.Object
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expected *extensions.ReplicaSet
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}{
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{
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"No new ReplicaSet",
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[]runtime.Object{
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&api.PodList{},
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&extensions.ReplicaSetList{
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Items: []extensions.ReplicaSet{
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generateRS(generateDeployment("foo")),
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generateRS(generateDeployment("bar")),
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},
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},
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},
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nil,
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},
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{
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"Has new ReplicaSet",
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[]runtime.Object{
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&api.PodList{},
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&extensions.ReplicaSetList{
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Items: []extensions.ReplicaSet{
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generateRS(generateDeployment("foo")),
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generateRS(generateDeployment("bar")),
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generateRS(generateDeployment("abc")),
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newRC,
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generateRS(generateDeployment("xyz")),
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},
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},
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},
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&newRC,
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},
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}
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for _, test := range tests {
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fakeClient := &fake.Clientset{}
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fakeClient = addListPodsReactor(fakeClient, test.objs[0])
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fakeClient = addListRSReactor(fakeClient, test.objs[1])
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fakeClient = addUpdatePodsReactor(fakeClient)
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fakeClient = addUpdateRSReactor(fakeClient)
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rs, err := GetNewReplicaSet(newDeployment, fakeClient)
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if err != nil {
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t.Errorf("In test case %s, got unexpected error %v", test.test, err)
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}
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if !api.Semantic.DeepEqual(rs, test.expected) {
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t.Errorf("In test case %s, expected %+v, got %+v", test.test, test.expected, rs)
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}
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}
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}
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func TestGetOldRCs(t *testing.T) {
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newDeployment := generateDeployment("nginx")
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newRS := generateRS(newDeployment)
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newPod := generatePodFromRS(newRS)
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// create 2 old deployments and related replica sets/pods, with the same labels but different template
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oldDeployment := generateDeployment("nginx")
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oldDeployment.Spec.Template.Spec.Containers[0].Name = "nginx-old-1"
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oldRS := generateRS(oldDeployment)
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oldPod := generatePodFromRS(oldRS)
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oldDeployment2 := generateDeployment("nginx")
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oldDeployment2.Spec.Template.Spec.Containers[0].Name = "nginx-old-2"
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oldRS2 := generateRS(oldDeployment2)
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oldPod2 := generatePodFromRS(oldRS2)
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// create 1 ReplicaSet that existed before the deployment, with the same labels as the deployment
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existedPod := generatePod(newDeployment.Spec.Template.Labels, "foo")
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existedRS := generateRSWithLabel(newDeployment.Spec.Template.Labels, "foo")
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tests := []struct {
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test string
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objs []runtime.Object
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expected []*extensions.ReplicaSet
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}{
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{
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"No old ReplicaSets",
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[]runtime.Object{
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&api.PodList{
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Items: []api.Pod{
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generatePod(newDeployment.Spec.Template.Labels, "foo"),
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generatePod(newDeployment.Spec.Template.Labels, "bar"),
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newPod,
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},
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},
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&extensions.ReplicaSetList{
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Items: []extensions.ReplicaSet{
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generateRS(generateDeployment("foo")),
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newRS,
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generateRS(generateDeployment("bar")),
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},
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},
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},
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[]*extensions.ReplicaSet{},
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},
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{
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"Has old ReplicaSet",
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[]runtime.Object{
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&api.PodList{
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Items: []api.Pod{
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oldPod,
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oldPod2,
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generatePod(map[string]string{"name": "bar"}, "bar"),
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generatePod(map[string]string{"name": "xyz"}, "xyz"),
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existedPod,
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generatePod(newDeployment.Spec.Template.Labels, "abc"),
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},
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},
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&extensions.ReplicaSetList{
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Items: []extensions.ReplicaSet{
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oldRS2,
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oldRS,
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existedRS,
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newRS,
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generateRSWithLabel(map[string]string{"name": "xyz"}, "xyz"),
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generateRSWithLabel(map[string]string{"name": "bar"}, "bar"),
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},
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},
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},
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[]*extensions.ReplicaSet{&oldRS, &oldRS2, &existedRS},
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},
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}
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for _, test := range tests {
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fakeClient := &fake.Clientset{}
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fakeClient = addListPodsReactor(fakeClient, test.objs[0])
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fakeClient = addListRSReactor(fakeClient, test.objs[1])
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fakeClient = addUpdatePodsReactor(fakeClient)
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fakeClient = addUpdateRSReactor(fakeClient)
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rss, _, err := GetOldReplicaSets(newDeployment, fakeClient)
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if err != nil {
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t.Errorf("In test case %s, got unexpected error %v", test.test, err)
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}
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if !equal(rss, test.expected) {
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t.Errorf("In test case %q, expected:", test.test)
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for _, rs := range test.expected {
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t.Errorf("rs = %+v", rs)
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}
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t.Errorf("In test case %q, got:", test.test)
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for _, rs := range rss {
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t.Errorf("rs = %+v", rs)
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}
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}
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}
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}
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// equal compares the equality of two ReplicaSet slices regardless of their ordering
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func equal(rss1, rss2 []*extensions.ReplicaSet) bool {
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if reflect.DeepEqual(rss1, rss2) {
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return true
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}
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if rss1 == nil || rss2 == nil || len(rss1) != len(rss2) {
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return false
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}
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count := 0
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for _, rs1 := range rss1 {
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for _, rs2 := range rss2 {
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if reflect.DeepEqual(rs1, rs2) {
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count++
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break
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}
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}
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}
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return count == len(rss1)
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}
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