d2532b50ce
The mapping of static pod <--> mirror pod UIDs was backwards in a couple places. Fortunately, they canceled each other out. Fixed, and added a test case.
580 lines
19 KiB
Go
580 lines
19 KiB
Go
/*
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Copyright 2014 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 status
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import (
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"fmt"
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"math/rand"
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"strconv"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/unversioned"
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client "k8s.io/kubernetes/pkg/client/unversioned"
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"k8s.io/kubernetes/pkg/client/unversioned/testclient"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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kubepod "k8s.io/kubernetes/pkg/kubelet/pod"
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kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
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"k8s.io/kubernetes/pkg/runtime"
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)
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var testPod *api.Pod = &api.Pod{
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ObjectMeta: api.ObjectMeta{
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UID: "12345678",
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Name: "foo",
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Namespace: "new",
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},
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}
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func newTestManager(kubeClient client.Interface) *manager {
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podManager := kubepod.NewBasicPodManager(kubepod.NewFakeMirrorClient())
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podManager.AddPod(testPod)
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return NewManager(kubeClient, podManager).(*manager)
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}
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func generateRandomMessage() string {
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return strconv.Itoa(rand.Int())
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}
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func getRandomPodStatus() api.PodStatus {
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return api.PodStatus{
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Message: generateRandomMessage(),
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}
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}
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func verifyActions(t *testing.T, kubeClient client.Interface, expectedActions []testclient.Action) {
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actions := kubeClient.(*testclient.Fake).Actions()
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if len(actions) != len(expectedActions) {
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t.Fatalf("unexpected actions, got: %s expected: %s", actions, expectedActions)
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return
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}
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for i := 0; i < len(actions); i++ {
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e := expectedActions[i]
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a := actions[i]
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if !a.Matches(e.GetVerb(), e.GetResource()) || a.GetSubresource() != e.GetSubresource() {
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t.Errorf("unexpected actions, got: %s expected: %s", actions, expectedActions)
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}
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}
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}
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func verifyUpdates(t *testing.T, manager *manager, expectedUpdates int) {
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// Consume all updates in the channel.
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numUpdates := 0
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for {
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hasUpdate := true
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select {
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case <-manager.podStatusChannel:
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numUpdates++
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default:
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hasUpdate = false
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}
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if !hasUpdate {
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break
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}
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}
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if numUpdates != expectedUpdates {
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t.Errorf("unexpected number of updates %d, expected %d", numUpdates, expectedUpdates)
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}
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}
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func TestNewStatus(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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verifyUpdates(t, syncer, 1)
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status, _ := syncer.GetPodStatus(testPod.UID)
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if status.StartTime.IsZero() {
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t.Errorf("SetPodStatus did not set a proper start time value")
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}
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}
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func TestNewStatusPreservesPodStartTime(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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UID: "12345678",
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Name: "foo",
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Namespace: "new",
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},
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Status: api.PodStatus{},
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}
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now := unversioned.Now()
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startTime := unversioned.NewTime(now.Time.Add(-1 * time.Minute))
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pod.Status.StartTime = &startTime
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syncer.SetPodStatus(pod, getRandomPodStatus())
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status, _ := syncer.GetPodStatus(pod.UID)
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if !status.StartTime.Time.Equal(startTime.Time) {
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t.Errorf("Unexpected start time, expected %v, actual %v", startTime, status.StartTime)
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}
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}
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func getReadyPodStatus() api.PodStatus {
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return api.PodStatus{
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Conditions: []api.PodCondition{
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{
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Type: api.PodReady,
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Status: api.ConditionTrue,
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},
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},
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}
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}
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func TestNewStatusSetsReadyTransitionTime(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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podStatus := getReadyPodStatus()
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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UID: "12345678",
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Name: "foo",
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Namespace: "new",
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},
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Status: api.PodStatus{},
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}
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syncer.SetPodStatus(pod, podStatus)
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verifyUpdates(t, syncer, 1)
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status, _ := syncer.GetPodStatus(pod.UID)
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readyCondition := api.GetPodReadyCondition(status)
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if readyCondition.LastTransitionTime.IsZero() {
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t.Errorf("Unexpected: last transition time not set")
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}
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}
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func TestChangedStatus(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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verifyUpdates(t, syncer, 2)
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}
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func TestChangedStatusKeepsStartTime(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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now := unversioned.Now()
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firstStatus := getRandomPodStatus()
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firstStatus.StartTime = &now
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syncer.SetPodStatus(testPod, firstStatus)
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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verifyUpdates(t, syncer, 2)
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finalStatus, _ := syncer.GetPodStatus(testPod.UID)
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if finalStatus.StartTime.IsZero() {
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t.Errorf("StartTime should not be zero")
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}
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if !finalStatus.StartTime.Time.Equal(now.Time) {
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t.Errorf("Expected %v, but got %v", now.Time, finalStatus.StartTime.Time)
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}
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}
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func TestChangedStatusUpdatesLastTransitionTime(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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podStatus := getReadyPodStatus()
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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UID: "12345678",
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Name: "foo",
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Namespace: "new",
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},
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Status: api.PodStatus{},
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}
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syncer.SetPodStatus(pod, podStatus)
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verifyUpdates(t, syncer, 1)
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oldStatus, _ := syncer.GetPodStatus(pod.UID)
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anotherStatus := getReadyPodStatus()
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anotherStatus.Conditions[0].Status = api.ConditionFalse
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syncer.SetPodStatus(pod, anotherStatus)
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verifyUpdates(t, syncer, 1)
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newStatus, _ := syncer.GetPodStatus(pod.UID)
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oldReadyCondition := api.GetPodReadyCondition(oldStatus)
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newReadyCondition := api.GetPodReadyCondition(newStatus)
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if newReadyCondition.LastTransitionTime.IsZero() {
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t.Errorf("Unexpected: last transition time not set")
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}
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if !oldReadyCondition.LastTransitionTime.Before(newReadyCondition.LastTransitionTime) {
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t.Errorf("Unexpected: new transition time %s, is not after old transition time %s", newReadyCondition.LastTransitionTime, oldReadyCondition.LastTransitionTime)
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}
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}
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func TestUnchangedStatus(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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podStatus := getRandomPodStatus()
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syncer.SetPodStatus(testPod, podStatus)
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syncer.SetPodStatus(testPod, podStatus)
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verifyUpdates(t, syncer, 1)
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}
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func TestUnchangedStatusPreservesLastTransitionTime(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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podStatus := getReadyPodStatus()
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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UID: "12345678",
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Name: "foo",
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Namespace: "new",
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},
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Status: api.PodStatus{},
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}
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syncer.SetPodStatus(pod, podStatus)
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verifyUpdates(t, syncer, 1)
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oldStatus, _ := syncer.GetPodStatus(pod.UID)
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anotherStatus := getReadyPodStatus()
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syncer.SetPodStatus(pod, anotherStatus)
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// No update.
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verifyUpdates(t, syncer, 0)
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newStatus, _ := syncer.GetPodStatus(pod.UID)
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oldReadyCondition := api.GetPodReadyCondition(oldStatus)
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newReadyCondition := api.GetPodReadyCondition(newStatus)
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if newReadyCondition.LastTransitionTime.IsZero() {
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t.Errorf("Unexpected: last transition time not set")
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}
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if !oldReadyCondition.LastTransitionTime.Equal(newReadyCondition.LastTransitionTime) {
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t.Errorf("Unexpected: new transition time %s, is not equal to old transition time %s", newReadyCondition.LastTransitionTime, oldReadyCondition.LastTransitionTime)
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}
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}
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func TestSyncBatchIgnoresNotFound(t *testing.T) {
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client := testclient.Fake{}
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syncer := newTestManager(&client)
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client.AddReactor("get", "pods", func(action testclient.Action) (bool, runtime.Object, error) {
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return true, nil, errors.NewNotFound("pods", "test-pod")
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})
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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syncer.syncBatch()
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verifyActions(t, syncer.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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})
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_, found := syncer.GetPodStatus(testPod.UID)
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assert.False(t, found, "Pod status should have been deleted")
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}
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func TestSyncBatch(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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syncer.kubeClient = testclient.NewSimpleFake(testPod)
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syncer.SetPodStatus(testPod, getRandomPodStatus())
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syncer.syncBatch()
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verifyActions(t, syncer.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
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},
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)
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}
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func TestSyncBatchChecksMismatchedUID(t *testing.T) {
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syncer := newTestManager(&testclient.Fake{})
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pod := *testPod
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pod.UID = "first"
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syncer.podManager.AddPod(&pod)
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differentPod := *testPod
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differentPod.UID = "second"
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syncer.podManager.AddPod(&differentPod)
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syncer.kubeClient = testclient.NewSimpleFake(&pod)
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syncer.SetPodStatus(&differentPod, getRandomPodStatus())
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syncer.syncBatch()
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verifyActions(t, syncer.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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})
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}
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func TestSyncBatchNoDeadlock(t *testing.T) {
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client := &testclient.Fake{}
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m := newTestManager(client)
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// Setup fake client.
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var ret api.Pod
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var err error
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client.AddReactor("*", "pods", func(action testclient.Action) (bool, runtime.Object, error) {
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switch action := action.(type) {
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case testclient.GetAction:
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assert.Equal(t, testPod.Name, action.GetName(), "Unexpeted GetAction: %+v", action)
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case testclient.UpdateAction:
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assert.Equal(t, testPod.Name, action.GetObject().(*api.Pod).Name, "Unexpeted UpdateAction: %+v", action)
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default:
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assert.Fail(t, "Unexpected Action: %+v", action)
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}
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return true, &ret, err
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})
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pod := new(api.Pod)
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*pod = *testPod
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pod.Status.ContainerStatuses = []api.ContainerStatus{{State: api.ContainerState{Running: &api.ContainerStateRunning{}}}}
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getAction := testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}}
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updateAction := testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}}
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// Pod not found.
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ret = *pod
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err = errors.NewNotFound("pods", pod.Name)
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction})
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client.ClearActions()
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// Pod was recreated.
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ret.UID = "other_pod"
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err = nil
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction})
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client.ClearActions()
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// Pod not deleted (success case).
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ret = *pod
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction, updateAction})
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client.ClearActions()
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// Pod is terminated, but still running.
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pod.DeletionTimestamp = new(unversioned.Time)
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction, updateAction})
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client.ClearActions()
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// Pod is terminated successfully.
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pod.Status.ContainerStatuses[0].State.Running = nil
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pod.Status.ContainerStatuses[0].State.Terminated = &api.ContainerStateTerminated{}
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction, updateAction})
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client.ClearActions()
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// Error case.
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err = fmt.Errorf("intentional test error")
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m.SetPodStatus(pod, getRandomPodStatus())
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m.syncBatch()
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verifyActions(t, client, []testclient.Action{getAction})
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client.ClearActions()
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}
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func TestStaleUpdates(t *testing.T) {
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pod := *testPod
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client := testclient.NewSimpleFake(&pod)
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m := newTestManager(client)
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status := api.PodStatus{Message: "initial status"}
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m.SetPodStatus(&pod, status)
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status.Message = "first version bump"
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m.SetPodStatus(&pod, status)
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status.Message = "second version bump"
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m.SetPodStatus(&pod, status)
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verifyUpdates(t, m, 3)
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t.Logf("First sync pushes latest status.")
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m.syncBatch()
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verifyActions(t, m.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
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})
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client.ClearActions()
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for i := 0; i < 2; i++ {
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t.Logf("Next 2 syncs should be ignored (%d).", i)
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m.syncBatch()
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verifyActions(t, m.kubeClient, []testclient.Action{})
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}
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t.Log("Unchanged status should not send an update.")
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m.SetPodStatus(&pod, status)
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verifyUpdates(t, m, 0)
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t.Log("... unless it's stale.")
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m.apiStatusVersions[pod.UID] = m.apiStatusVersions[pod.UID] - 1
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m.SetPodStatus(&pod, status)
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m.syncBatch()
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verifyActions(t, m.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
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})
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// Nothing stuck in the pipe.
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verifyUpdates(t, m, 0)
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}
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// shuffle returns a new shuffled list of container statuses.
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func shuffle(statuses []api.ContainerStatus) []api.ContainerStatus {
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numStatuses := len(statuses)
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randIndexes := rand.Perm(numStatuses)
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shuffled := make([]api.ContainerStatus, numStatuses)
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for i := 0; i < numStatuses; i++ {
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shuffled[i] = statuses[randIndexes[i]]
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}
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return shuffled
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}
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func TestStatusEquality(t *testing.T) {
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containerStatus := []api.ContainerStatus{}
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for i := 0; i < 10; i++ {
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s := api.ContainerStatus{
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Name: fmt.Sprintf("container%d", i),
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}
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containerStatus = append(containerStatus, s)
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}
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podStatus := api.PodStatus{
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ContainerStatuses: containerStatus,
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}
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for i := 0; i < 10; i++ {
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oldPodStatus := api.PodStatus{
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ContainerStatuses: shuffle(podStatus.ContainerStatuses),
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}
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if !isStatusEqual(&oldPodStatus, &podStatus) {
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t.Fatalf("Order of container statuses should not affect equality.")
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}
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}
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}
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func TestStaticPodStatus(t *testing.T) {
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staticPod := *testPod
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staticPod.Annotations = map[string]string{kubetypes.ConfigSourceAnnotationKey: "file"}
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mirrorPod := *testPod
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mirrorPod.UID = "mirror-12345678"
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mirrorPod.Annotations = map[string]string{
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kubetypes.ConfigSourceAnnotationKey: "api",
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kubetypes.ConfigMirrorAnnotationKey: "mirror",
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}
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client := testclient.NewSimpleFake(&mirrorPod)
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m := newTestManager(client)
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m.podManager.AddPod(&staticPod)
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m.podManager.AddPod(&mirrorPod)
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// Verify setup.
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assert.True(t, kubepod.IsStaticPod(&staticPod), "SetUp error: staticPod")
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assert.True(t, kubepod.IsMirrorPod(&mirrorPod), "SetUp error: mirrorPod")
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assert.Equal(t, m.podManager.TranslatePodUID(mirrorPod.UID), staticPod.UID)
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status := getRandomPodStatus()
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now := unversioned.Now()
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status.StartTime = &now
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m.SetPodStatus(&staticPod, status)
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retrievedStatus, _ := m.GetPodStatus(staticPod.UID)
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assert.True(t, isStatusEqual(&status, &retrievedStatus), "Expected: %+v, Got: %+v", status, retrievedStatus)
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retrievedStatus, _ = m.GetPodStatus(mirrorPod.UID)
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assert.True(t, isStatusEqual(&status, &retrievedStatus), "Expected: %+v, Got: %+v", status, retrievedStatus)
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// Should translate mirrorPod / staticPod UID.
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m.syncBatch()
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verifyActions(t, m.kubeClient, []testclient.Action{
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testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
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testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
|
|
})
|
|
updateAction := client.Actions()[1].(testclient.UpdateActionImpl)
|
|
updatedPod := updateAction.Object.(*api.Pod)
|
|
assert.Equal(t, mirrorPod.UID, updatedPod.UID, "Expected mirrorPod (%q), but got %q", mirrorPod.UID, updatedPod.UID)
|
|
assert.True(t, isStatusEqual(&status, &updatedPod.Status), "Expected: %+v, Got: %+v", status, updatedPod.Status)
|
|
client.ClearActions()
|
|
|
|
// No changes.
|
|
m.syncBatch()
|
|
verifyActions(t, m.kubeClient, []testclient.Action{})
|
|
|
|
// Mirror pod identity changes.
|
|
m.podManager.DeletePod(&mirrorPod)
|
|
mirrorPod.UID = "new-mirror-pod"
|
|
mirrorPod.Status = api.PodStatus{}
|
|
m.podManager.AddPod(&mirrorPod)
|
|
// Expect update to new mirrorPod.
|
|
m.syncBatch()
|
|
verifyActions(t, m.kubeClient, []testclient.Action{
|
|
testclient.GetActionImpl{ActionImpl: testclient.ActionImpl{Verb: "get", Resource: "pods"}},
|
|
testclient.UpdateActionImpl{ActionImpl: testclient.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
|
|
})
|
|
updateAction = client.Actions()[1].(testclient.UpdateActionImpl)
|
|
updatedPod = updateAction.Object.(*api.Pod)
|
|
assert.Equal(t, mirrorPod.UID, updatedPod.UID, "Expected mirrorPod (%q), but got %q", mirrorPod.UID, updatedPod.UID)
|
|
assert.True(t, isStatusEqual(&status, &updatedPod.Status), "Expected: %+v, Got: %+v", status, updatedPod.Status)
|
|
}
|
|
|
|
func TestSetContainerReadiness(t *testing.T) {
|
|
containerID := kubecontainer.ContainerID{"test", "cOnTaInEr_Id"}
|
|
containerStatus := api.ContainerStatus{
|
|
Name: "cOnTaInEr_NaMe",
|
|
ContainerID: containerID.String(),
|
|
Ready: false,
|
|
}
|
|
status := api.PodStatus{
|
|
ContainerStatuses: []api.ContainerStatus{containerStatus},
|
|
}
|
|
|
|
m := newTestManager(&testclient.Fake{})
|
|
|
|
t.Log("Setting readiness before status should fail.")
|
|
m.SetContainerReadiness(testPod, containerID, true)
|
|
verifyUpdates(t, m, 0)
|
|
|
|
t.Log("Setting initial status.")
|
|
m.SetPodStatus(testPod, status)
|
|
verifyUpdates(t, m, 1)
|
|
|
|
t.Log("Setting unchanged readiness should do nothing.")
|
|
m.SetContainerReadiness(testPod, containerID, false)
|
|
verifyUpdates(t, m, 0)
|
|
|
|
t.Log("Setting different readiness should generate update.")
|
|
m.SetContainerReadiness(testPod, containerID, true)
|
|
verifyUpdates(t, m, 1)
|
|
|
|
t.Log("Setting non-existant container readiness should fail.")
|
|
m.SetContainerReadiness(testPod, kubecontainer.ContainerID{"test", "foo"}, true)
|
|
verifyUpdates(t, m, 0)
|
|
}
|
|
|
|
func TestSyncBatchCleanupVersions(t *testing.T) {
|
|
m := newTestManager(&testclient.Fake{})
|
|
mirrorPod := *testPod
|
|
mirrorPod.UID = "mirror-uid"
|
|
mirrorPod.Name = "mirror_pod"
|
|
mirrorPod.Annotations = map[string]string{
|
|
kubetypes.ConfigSourceAnnotationKey: "api",
|
|
kubetypes.ConfigMirrorAnnotationKey: "mirror",
|
|
}
|
|
|
|
// Orphaned pods should be removed.
|
|
m.apiStatusVersions[testPod.UID] = 100
|
|
m.apiStatusVersions[mirrorPod.UID] = 200
|
|
m.syncBatch()
|
|
if _, ok := m.apiStatusVersions[testPod.UID]; ok {
|
|
t.Errorf("Should have cleared status for testPod")
|
|
}
|
|
if _, ok := m.apiStatusVersions[mirrorPod.UID]; ok {
|
|
t.Errorf("Should have cleared status for mirrorPod")
|
|
}
|
|
|
|
// Non-orphaned pods should not be removed.
|
|
m.SetPodStatus(testPod, getRandomPodStatus())
|
|
m.podManager.AddPod(&mirrorPod)
|
|
staticPod := mirrorPod
|
|
staticPod.UID = "static-uid"
|
|
staticPod.Annotations = map[string]string{kubetypes.ConfigSourceAnnotationKey: "file"}
|
|
m.podManager.AddPod(&staticPod)
|
|
m.apiStatusVersions[testPod.UID] = 100
|
|
m.apiStatusVersions[mirrorPod.UID] = 200
|
|
m.syncBatch()
|
|
if _, ok := m.apiStatusVersions[testPod.UID]; !ok {
|
|
t.Errorf("Should not have cleared status for testPod")
|
|
}
|
|
if _, ok := m.apiStatusVersions[mirrorPod.UID]; !ok {
|
|
t.Errorf("Should not have cleared status for mirrorPod")
|
|
}
|
|
}
|