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Fix watches in StatefulSet e2e tests

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This commit is contained in:
Tomas Nozicka 2019-03-08 13:21:01 +01:00
parent 3e2ae631b4
commit 2256991c93
1 changed files with 26 additions and 7 deletions
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33
test/e2e/apps/statefulset.go
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@ -24,15 +24,19 @@ import (
"github.com/onsi/ginkgo"
"github.com/onsi/gomega"
appsv1 "k8s.io/api/apps/v1"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
klabels "k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
watchtools "k8s.io/client-go/tools/watch"
"k8s.io/kubernetes/test/e2e/framework"
e2enode "k8s.io/kubernetes/test/e2e/framework/node"
@ -572,8 +576,14 @@ var _ = SIGDescribe("StatefulSet", func() {
*/
framework.ConformanceIt("Scaling should happen in predictable order and halt if any stateful pod is unhealthy [Slow]", func() {
psLabels := klabels.Set(labels)
w := &cache.ListWatch{
WatchFunc: func(options metav1.ListOptions) (i watch.Interface, e error) {
options.LabelSelector = psLabels.AsSelector().String()
return f.ClientSet.CoreV1().Pods(ns).Watch(context.TODO(), options)
},
}
ginkgo.By("Initializing watcher for selector " + psLabels.String())
watcher, err := f.ClientSet.CoreV1().Pods(ns).Watch(context.TODO(), metav1.ListOptions{
pl, err := f.ClientSet.CoreV1().Pods(ns).List(context.TODO(), metav1.ListOptions{
LabelSelector: psLabels.AsSelector().String(),
})
framework.ExpectNoError(err)
@ -602,7 +612,7 @@ var _ = SIGDescribe("StatefulSet", func() {
expectedOrder := []string{ssName + "-0", ssName + "-1", ssName + "-2"}
ctx, cancel := watchtools.ContextWithOptionalTimeout(context.Background(), statefulSetTimeout)
defer cancel()
_, err = watchtools.UntilWithoutRetry(ctx, watcher, func(event watch.Event) (bool, error) {
_, err = watchtools.Until(ctx, pl.ResourceVersion, w, func(event watch.Event) (bool, error) {
if event.Type != watch.Added {
return false, nil
}
@ -616,7 +626,7 @@ var _ = SIGDescribe("StatefulSet", func() {
framework.ExpectNoError(err)
ginkgo.By("Scale down will halt with unhealthy stateful pod")
watcher, err = f.ClientSet.CoreV1().Pods(ns).Watch(context.TODO(), metav1.ListOptions{
pl, err = f.ClientSet.CoreV1().Pods(ns).List(context.TODO(), metav1.ListOptions{
LabelSelector: psLabels.AsSelector().String(),
})
framework.ExpectNoError(err)
@ -635,7 +645,7 @@ var _ = SIGDescribe("StatefulSet", func() {
expectedOrder = []string{ssName + "-2", ssName + "-1", ssName + "-0"}
ctx, cancel = watchtools.ContextWithOptionalTimeout(context.Background(), statefulSetTimeout)
defer cancel()
_, err = watchtools.UntilWithoutRetry(ctx, watcher, func(event watch.Event) (bool, error) {
_, err = watchtools.Until(ctx, pl.ResourceVersion, w, func(event watch.Event) (bool, error) {
if event.Type != watch.Deleted {
return false, nil
}
@ -738,12 +748,21 @@ var _ = SIGDescribe("StatefulSet", func() {
var initialStatefulPodUID types.UID
ginkgo.By("Waiting until stateful pod " + statefulPodName + " will be recreated and deleted at least once in namespace " + f.Namespace.Name)
w, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Watch(context.TODO(), metav1.SingleObject(metav1.ObjectMeta{Name: statefulPodName}))
framework.ExpectNoError(err)
fieldSelector := fields.OneTermEqualSelector("metadata.name", statefulPodName).String()
lw := &cache.ListWatch{
ListFunc: func(options metav1.ListOptions) (object runtime.Object, e error) {
options.FieldSelector = fieldSelector
return f.ClientSet.CoreV1().Pods(f.Namespace.Name).List(context.TODO(), options)
},
WatchFunc: func(options metav1.ListOptions) (i watch.Interface, e error) {
options.FieldSelector = fieldSelector
return f.ClientSet.CoreV1().Pods(f.Namespace.Name).Watch(context.TODO(), options)
},
}
ctx, cancel := watchtools.ContextWithOptionalTimeout(context.Background(), statefulPodTimeout)
defer cancel()
// we need to get UID from pod in any state and wait until stateful set controller will remove pod at least once
_, err = watchtools.UntilWithoutRetry(ctx, w, func(event watch.Event) (bool, error) {
_, err = watchtools.ListWatchUntil(ctx, lw, func(event watch.Event) (bool, error) {
pod := event.Object.(*v1.Pod)
switch event.Type {
case watch.Deleted: