mirror of https://github.com/k3s-io/k3s
477 lines
19 KiB
Go
477 lines
19 KiB
Go
/*
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Copyright 2016 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 statefulset
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import (
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"errors"
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"strings"
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"testing"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/runtime"
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core "k8s.io/client-go/testing"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/record"
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"k8s.io/api/core/v1"
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"k8s.io/client-go/kubernetes/fake"
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corelisters "k8s.io/client-go/listers/core/v1"
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_ "k8s.io/kubernetes/pkg/api/install"
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_ "k8s.io/kubernetes/pkg/apis/apps/install"
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)
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func TestStatefulPodControlCreatesPods(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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fakeClient.AddReactor("get", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, apierrors.NewNotFound(action.GetResource().GroupResource(), action.GetResource().Resource)
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})
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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fakeClient.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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if err := control.CreateStatefulPod(set, pod); err != nil {
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t.Errorf("StatefulPodControl failed to create Pod error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 events for successful create found %d", eventCount)
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}
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for i := range events {
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if !strings.Contains(events[i], v1.EventTypeNormal) {
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t.Errorf("Expected normal events found %s", events[i])
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}
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}
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}
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func TestStatefulPodControlCreatePodExists(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcs := getPersistentVolumeClaims(set, pod)
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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for k := range pvcs {
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pvc := pvcs[k]
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pvcIndexer.Add(&pvc)
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}
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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fakeClient.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
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return true, pod, apierrors.NewAlreadyExists(action.GetResource().GroupResource(), pod.Name)
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})
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if err := control.CreateStatefulPod(set, pod); !apierrors.IsAlreadyExists(err) {
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t.Errorf("Failed to create Pod error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 0 {
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t.Errorf("Expected 0 events when Pod and PVC exist found %d", eventCount)
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for i := range events {
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t.Log(events[i])
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}
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}
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}
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func TestStatefulPodControlCreatePodPvcCreateFailure(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, apierrors.NewInternalError(errors.New("API server down"))
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})
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fakeClient.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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if err := control.CreateStatefulPod(set, pod); err == nil {
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t.Error("Failed to produce error on PVC creation failure")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 events for PVC create failure found %d", eventCount)
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}
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for i := range events {
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if !strings.Contains(events[i], v1.EventTypeWarning) {
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t.Errorf("Expected normal events found %s", events[i])
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}
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}
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}
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type fakeIndexer struct {
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cache.Indexer
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getError error
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}
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func (f *fakeIndexer) GetByKey(key string) (interface{}, bool, error) {
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return nil, false, f.getError
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}
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func TestStatefulPodControlCreatePodPvcGetFailure(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := &fakeIndexer{getError: errors.New("API server down")}
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, apierrors.NewInternalError(errors.New("API server down"))
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})
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fakeClient.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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if err := control.CreateStatefulPod(set, pod); err == nil {
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t.Error("Failed to produce error on PVC creation failure")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 events for PVC create failure found %d", eventCount)
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}
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for i := range events {
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if !strings.Contains(events[i], v1.EventTypeWarning) {
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t.Errorf("Expected normal events found %s", events[i])
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}
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}
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}
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func TestStatefulPodControlCreatePodFailed(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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create := action.(core.CreateAction)
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return true, create.GetObject(), nil
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})
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fakeClient.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, apierrors.NewInternalError(errors.New("API server down"))
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})
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if err := control.CreateStatefulPod(set, pod); err == nil {
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t.Error("Failed to produce error on Pod creation failure")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 events for failed Pod create found %d", eventCount)
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} else if !strings.Contains(events[0], v1.EventTypeNormal) {
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t.Errorf("Expected normal event found %s", events[0])
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} else if !strings.Contains(events[1], v1.EventTypeWarning) {
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t.Errorf("Expected warning event found %s", events[1])
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}
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}
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func TestStatefulPodControlNoOpUpdate(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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control := NewRealStatefulPodControl(fakeClient, nil, nil, nil, recorder)
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fakeClient.AddReactor("*", "*", func(action core.Action) (bool, runtime.Object, error) {
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t.Error("no-op update should not make any client invocation")
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return true, nil, apierrors.NewInternalError(errors.New("If we are here we have a problem"))
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})
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if err := control.UpdateStatefulPod(set, pod); err != nil {
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t.Errorf("Error returned on no-op update error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 0 {
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t.Errorf("Expected 0 events for no-op update found %d", eventCount)
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}
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}
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func TestStatefulPodControlUpdatesIdentity(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := fake.NewSimpleClientset(set, pod)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, nil, recorder)
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var updated *v1.Pod
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fakeClient.PrependReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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updated = update.GetObject().(*v1.Pod)
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return true, update.GetObject(), nil
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})
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pod.Name = "goo-0"
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if err := control.UpdateStatefulPod(set, pod); err != nil {
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t.Errorf("Successful update returned an error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 1 {
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t.Errorf("Expected 1 event for successful Pod update found %d", eventCount)
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} else if !strings.Contains(events[0], v1.EventTypeNormal) {
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t.Errorf("Expected normal event found %s", events[0])
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}
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if !identityMatches(set, updated) {
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t.Error("Name update failed identity does not match")
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}
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}
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func TestStatefulPodControlUpdateIdentityFailure(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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gooPod := newStatefulSetPod(set, 0)
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gooPod.Name = "goo-0"
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indexer.Add(gooPod)
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podLister := corelisters.NewPodLister(indexer)
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control := NewRealStatefulPodControl(fakeClient, nil, podLister, nil, recorder)
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fakeClient.AddReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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pod.Name = "goo-0"
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return true, nil, apierrors.NewInternalError(errors.New("API server down"))
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})
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pod.Name = "goo-0"
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if err := control.UpdateStatefulPod(set, pod); err == nil {
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t.Error("Failed update does not generate an error")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 1 {
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t.Errorf("Expected 1 event for failed Pod update found %d", eventCount)
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} else if !strings.Contains(events[0], v1.EventTypeWarning) {
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t.Errorf("Expected warning event found %s", events[0])
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}
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if identityMatches(set, pod) {
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t.Error("Failed update mutated Pod identity")
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}
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}
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func TestStatefulPodControlUpdatesPodStorage(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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pvcs := getPersistentVolumeClaims(set, pod)
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volumes := make([]v1.Volume, 0, len(pod.Spec.Volumes))
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for i := range pod.Spec.Volumes {
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if _, contains := pvcs[pod.Spec.Volumes[i].Name]; !contains {
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volumes = append(volumes, pod.Spec.Volumes[i])
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}
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}
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pod.Spec.Volumes = volumes
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fakeClient.AddReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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return true, update.GetObject(), nil
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})
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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return true, update.GetObject(), nil
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})
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var updated *v1.Pod
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fakeClient.PrependReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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updated = update.GetObject().(*v1.Pod)
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return true, update.GetObject(), nil
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})
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if err := control.UpdateStatefulPod(set, pod); err != nil {
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t.Errorf("Successful update returned an error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 event for successful Pod storage update found %d", eventCount)
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}
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for i := range events {
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if !strings.Contains(events[i], v1.EventTypeNormal) {
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t.Errorf("Expected normal event found %s", events[i])
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}
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}
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if !storageMatches(set, updated) {
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t.Error("Name update failed identity does not match")
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}
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}
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func TestStatefulPodControlUpdatePodStorageFailure(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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pvcIndexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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pvcLister := corelisters.NewPersistentVolumeClaimLister(pvcIndexer)
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control := NewRealStatefulPodControl(fakeClient, nil, nil, pvcLister, recorder)
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pvcs := getPersistentVolumeClaims(set, pod)
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volumes := make([]v1.Volume, 0, len(pod.Spec.Volumes))
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for i := range pod.Spec.Volumes {
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if _, contains := pvcs[pod.Spec.Volumes[i].Name]; !contains {
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volumes = append(volumes, pod.Spec.Volumes[i])
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}
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}
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pod.Spec.Volumes = volumes
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fakeClient.AddReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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return true, update.GetObject(), nil
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})
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fakeClient.AddReactor("create", "persistentvolumeclaims", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, apierrors.NewInternalError(errors.New("API server down"))
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})
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if err := control.UpdateStatefulPod(set, pod); err == nil {
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t.Error("Failed Pod storage update did not return an error")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 2 {
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t.Errorf("Expected 2 event for failed Pod storage update found %d", eventCount)
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}
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for i := range events {
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if !strings.Contains(events[i], v1.EventTypeWarning) {
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t.Errorf("Expected normal event found %s", events[i])
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}
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}
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}
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func TestStatefulPodControlUpdatePodConflictSuccess(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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gooPod := newStatefulSetPod(set, 0)
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gooPod.Name = "goo-0"
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indexer.Add(gooPod)
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podLister := corelisters.NewPodLister(indexer)
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control := NewRealStatefulPodControl(fakeClient, nil, podLister, nil, recorder)
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conflict := false
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fakeClient.AddReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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if !conflict {
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conflict = true
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return true, update.GetObject(), apierrors.NewConflict(action.GetResource().GroupResource(), pod.Name, errors.New("conflict"))
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} else {
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return true, update.GetObject(), nil
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}
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})
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pod.Name = "goo-0"
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if err := control.UpdateStatefulPod(set, pod); err != nil {
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t.Errorf("Successful update returned an error: %s", err)
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 1 {
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t.Errorf("Expected 1 event for successful Pod update found %d", eventCount)
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} else if !strings.Contains(events[0], v1.EventTypeNormal) {
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t.Errorf("Expected normal event found %s", events[0])
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}
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if !identityMatches(set, pod) {
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t.Error("Name update failed identity does not match")
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}
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}
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func TestStatefulPodControlUpdatePodConflictFailure(t *testing.T) {
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recorder := record.NewFakeRecorder(10)
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set := newStatefulSet(3)
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pod := newStatefulSetPod(set, 0)
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fakeClient := &fake.Clientset{}
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indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
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updatedPod := newStatefulSetPod(set, 0)
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updatedPod.Spec.Hostname = "wrong"
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indexer.Add(updatedPod)
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podLister := corelisters.NewPodLister(indexer)
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control := NewRealStatefulPodControl(fakeClient, nil, podLister, nil, recorder)
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fakeClient.AddReactor("update", "pods", func(action core.Action) (bool, runtime.Object, error) {
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update := action.(core.UpdateAction)
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return true, update.GetObject(), apierrors.NewConflict(action.GetResource().GroupResource(), pod.Name, errors.New("conflict"))
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})
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pod.Name = "goo-0"
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if err := control.UpdateStatefulPod(set, pod); err == nil {
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t.Error("Failed update did not return an error")
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}
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events := collectEvents(recorder.Events)
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if eventCount := len(events); eventCount != 1 {
|
|
t.Errorf("Expected 1 event for failed Pod update found %d", eventCount)
|
|
} else if !strings.Contains(events[0], v1.EventTypeWarning) {
|
|
t.Errorf("Expected normal event found %s", events[0])
|
|
}
|
|
}
|
|
|
|
func TestStatefulPodControlDeletesStatefulPod(t *testing.T) {
|
|
recorder := record.NewFakeRecorder(10)
|
|
set := newStatefulSet(3)
|
|
pod := newStatefulSetPod(set, 0)
|
|
fakeClient := &fake.Clientset{}
|
|
control := NewRealStatefulPodControl(fakeClient, nil, nil, nil, recorder)
|
|
fakeClient.AddReactor("delete", "pods", func(action core.Action) (bool, runtime.Object, error) {
|
|
return true, nil, nil
|
|
})
|
|
if err := control.DeleteStatefulPod(set, pod); err != nil {
|
|
t.Errorf("Error returned on successful delete: %s", err)
|
|
}
|
|
events := collectEvents(recorder.Events)
|
|
if eventCount := len(events); eventCount != 1 {
|
|
t.Errorf("Expected 1 events for successful delete found %d", eventCount)
|
|
} else if !strings.Contains(events[0], v1.EventTypeNormal) {
|
|
t.Errorf("Expected normal event found %s", events[0])
|
|
}
|
|
}
|
|
|
|
func TestStatefulPodControlDeleteFailure(t *testing.T) {
|
|
recorder := record.NewFakeRecorder(10)
|
|
set := newStatefulSet(3)
|
|
pod := newStatefulSetPod(set, 0)
|
|
fakeClient := &fake.Clientset{}
|
|
control := NewRealStatefulPodControl(fakeClient, nil, nil, nil, recorder)
|
|
fakeClient.AddReactor("delete", "pods", func(action core.Action) (bool, runtime.Object, error) {
|
|
return true, nil, apierrors.NewInternalError(errors.New("API server down"))
|
|
})
|
|
if err := control.DeleteStatefulPod(set, pod); err == nil {
|
|
t.Error("Failed to return error on failed delete")
|
|
}
|
|
events := collectEvents(recorder.Events)
|
|
if eventCount := len(events); eventCount != 1 {
|
|
t.Errorf("Expected 1 events for failed delete found %d", eventCount)
|
|
} else if !strings.Contains(events[0], v1.EventTypeWarning) {
|
|
t.Errorf("Expected warning event found %s", events[0])
|
|
}
|
|
}
|
|
|
|
func collectEvents(source <-chan string) []string {
|
|
done := false
|
|
events := make([]string, 0)
|
|
for !done {
|
|
select {
|
|
case event := <-source:
|
|
events = append(events, event)
|
|
default:
|
|
done = true
|
|
}
|
|
}
|
|
return events
|
|
}
|