mirror of https://github.com/k3s-io/k3s
302 lines
8.1 KiB
Go
302 lines
8.1 KiB
Go
/*
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Copyright 2015 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 podgc
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import (
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"sync"
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"testing"
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"time"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/client-go/informers"
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coreinformers "k8s.io/client-go/informers/core/v1"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/kubernetes/fake"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/controller/testutil"
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)
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type FakeController struct{}
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func (*FakeController) Run(<-chan struct{}) {}
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func (*FakeController) HasSynced() bool {
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return true
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}
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func (*FakeController) LastSyncResourceVersion() string {
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return ""
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}
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func alwaysReady() bool { return true }
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func NewFromClient(kubeClient clientset.Interface, terminatedPodThreshold int) (*PodGCController, coreinformers.PodInformer) {
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informerFactory := informers.NewSharedInformerFactory(kubeClient, controller.NoResyncPeriodFunc())
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podInformer := informerFactory.Core().V1().Pods()
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controller := NewPodGC(kubeClient, podInformer, terminatedPodThreshold)
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controller.podListerSynced = alwaysReady
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return controller, podInformer
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}
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func TestGCTerminated(t *testing.T) {
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type nameToPhase struct {
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name string
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phase v1.PodPhase
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}
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testCases := []struct {
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pods []nameToPhase
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threshold int
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deletedPodNames sets.String
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}{
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed},
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{name: "b", phase: v1.PodSucceeded},
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},
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threshold: 0,
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// threshold = 0 disables terminated pod deletion
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deletedPodNames: sets.NewString(),
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},
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed},
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{name: "b", phase: v1.PodSucceeded},
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{name: "c", phase: v1.PodFailed},
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},
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threshold: 1,
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deletedPodNames: sets.NewString("a", "b"),
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},
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodRunning},
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{name: "b", phase: v1.PodSucceeded},
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{name: "c", phase: v1.PodFailed},
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},
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threshold: 1,
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deletedPodNames: sets.NewString("b"),
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},
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed},
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{name: "b", phase: v1.PodSucceeded},
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},
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threshold: 1,
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deletedPodNames: sets.NewString("a"),
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},
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed},
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{name: "b", phase: v1.PodSucceeded},
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},
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threshold: 5,
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deletedPodNames: sets.NewString(),
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},
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}
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for i, test := range testCases {
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client := fake.NewSimpleClientset(&v1.NodeList{Items: []v1.Node{*testutil.NewNode("node")}})
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gcc, podInformer := NewFromClient(client, test.threshold)
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deletedPodNames := make([]string, 0)
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var lock sync.Mutex
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gcc.deletePod = func(_, name string) error {
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lock.Lock()
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defer lock.Unlock()
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deletedPodNames = append(deletedPodNames, name)
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return nil
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}
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creationTime := time.Unix(0, 0)
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for _, pod := range test.pods {
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creationTime = creationTime.Add(1 * time.Hour)
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podInformer.Informer().GetStore().Add(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: pod.name, CreationTimestamp: metav1.Time{Time: creationTime}},
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Status: v1.PodStatus{Phase: pod.phase},
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Spec: v1.PodSpec{NodeName: "node"},
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})
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}
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gcc.gc()
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pass := true
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for _, pod := range deletedPodNames {
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if !test.deletedPodNames.Has(pod) {
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pass = false
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}
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}
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if len(deletedPodNames) != len(test.deletedPodNames) {
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pass = false
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}
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if !pass {
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t.Errorf("[%v]pod's deleted expected and actual did not match.\n\texpected: %v\n\tactual: %v", i, test.deletedPodNames, deletedPodNames)
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}
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}
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}
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func TestGCOrphaned(t *testing.T) {
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type nameToPhase struct {
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name string
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phase v1.PodPhase
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}
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testCases := []struct {
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pods []nameToPhase
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threshold int
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deletedPodNames sets.String
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}{
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed},
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{name: "b", phase: v1.PodSucceeded},
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},
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threshold: 0,
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deletedPodNames: sets.NewString("a", "b"),
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},
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{
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pods: []nameToPhase{
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{name: "a", phase: v1.PodRunning},
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},
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threshold: 1,
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deletedPodNames: sets.NewString("a"),
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},
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}
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for i, test := range testCases {
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client := fake.NewSimpleClientset()
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gcc, podInformer := NewFromClient(client, test.threshold)
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deletedPodNames := make([]string, 0)
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var lock sync.Mutex
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gcc.deletePod = func(_, name string) error {
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lock.Lock()
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defer lock.Unlock()
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deletedPodNames = append(deletedPodNames, name)
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return nil
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}
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creationTime := time.Unix(0, 0)
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for _, pod := range test.pods {
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creationTime = creationTime.Add(1 * time.Hour)
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podInformer.Informer().GetStore().Add(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: pod.name, CreationTimestamp: metav1.Time{Time: creationTime}},
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Status: v1.PodStatus{Phase: pod.phase},
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Spec: v1.PodSpec{NodeName: "node"},
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})
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}
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pods, err := podInformer.Lister().List(labels.Everything())
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if err != nil {
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t.Errorf("Error while listing all Pods: %v", err)
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return
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}
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gcc.gcOrphaned(pods)
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pass := true
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for _, pod := range deletedPodNames {
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if !test.deletedPodNames.Has(pod) {
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pass = false
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}
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}
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if len(deletedPodNames) != len(test.deletedPodNames) {
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pass = false
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}
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if !pass {
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t.Errorf("[%v]pod's deleted expected and actual did not match.\n\texpected: %v\n\tactual: %v", i, test.deletedPodNames, deletedPodNames)
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}
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}
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}
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func TestGCUnscheduledTerminating(t *testing.T) {
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type nameToPhase struct {
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name string
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phase v1.PodPhase
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deletionTimeStamp *metav1.Time
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nodeName string
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}
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testCases := []struct {
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name string
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pods []nameToPhase
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deletedPodNames sets.String
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}{
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{
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name: "Unscheduled pod in any phase must be deleted",
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed, deletionTimeStamp: &metav1.Time{}, nodeName: ""},
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{name: "b", phase: v1.PodSucceeded, deletionTimeStamp: &metav1.Time{}, nodeName: ""},
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{name: "c", phase: v1.PodRunning, deletionTimeStamp: &metav1.Time{}, nodeName: ""},
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},
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deletedPodNames: sets.NewString("a", "b", "c"),
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},
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{
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name: "Scheduled pod in any phase must not be deleted",
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pods: []nameToPhase{
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{name: "a", phase: v1.PodFailed, deletionTimeStamp: nil, nodeName: ""},
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{name: "b", phase: v1.PodSucceeded, deletionTimeStamp: nil, nodeName: "node"},
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{name: "c", phase: v1.PodRunning, deletionTimeStamp: &metav1.Time{}, nodeName: "node"},
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},
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deletedPodNames: sets.NewString(),
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},
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}
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for i, test := range testCases {
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client := fake.NewSimpleClientset()
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gcc, podInformer := NewFromClient(client, -1)
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deletedPodNames := make([]string, 0)
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var lock sync.Mutex
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gcc.deletePod = func(_, name string) error {
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lock.Lock()
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defer lock.Unlock()
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deletedPodNames = append(deletedPodNames, name)
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return nil
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}
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creationTime := time.Unix(0, 0)
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for _, pod := range test.pods {
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creationTime = creationTime.Add(1 * time.Hour)
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podInformer.Informer().GetStore().Add(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: pod.name, CreationTimestamp: metav1.Time{Time: creationTime},
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DeletionTimestamp: pod.deletionTimeStamp},
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Status: v1.PodStatus{Phase: pod.phase},
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Spec: v1.PodSpec{NodeName: pod.nodeName},
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})
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}
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pods, err := podInformer.Lister().List(labels.Everything())
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if err != nil {
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t.Errorf("Error while listing all Pods: %v", err)
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return
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}
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gcc.gcUnscheduledTerminating(pods)
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pass := true
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for _, pod := range deletedPodNames {
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if !test.deletedPodNames.Has(pod) {
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pass = false
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}
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}
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if len(deletedPodNames) != len(test.deletedPodNames) {
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pass = false
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}
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if !pass {
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t.Errorf("[%v]pod's deleted expected and actual did not match.\n\texpected: %v\n\tactual: %v, test: %v", i, test.deletedPodNames, deletedPodNames, test.name)
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}
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}
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}
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