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restore event Gone test

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This commit is contained in:
gongguan 2020-06-16 11:07:07 +08:00
parent 0f7de876a5
commit f3cbfc3f7e
1 changed files with 31 additions and 11 deletions
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42
staging/src/k8s.io/apiserver/pkg/storage/tests/cacher_test.go
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@ -57,6 +57,11 @@ var (
codecs = serializer.NewCodecFactory(scheme)
)
const (
// watchCacheDefaultCapacity syncs watch cache defaultLowerBoundCapacity.
watchCacheDefaultCapacity = 100
)
func init() {
metav1.AddToGroupVersion(scheme, metav1.SchemeGroupVersion)
utilruntime.Must(example.AddToScheme(scheme))
@ -101,6 +106,10 @@ func newEtcdTestStorage(t *testing.T, prefix string) (*etcd3testing.EtcdTestServ
}
func newTestCacher(s storage.Interface, cap int) (*cacherstorage.Cacher, storage.Versioner, error) {
return newTestCacherWithClock(s, cap, clock.RealClock{})
}
func newTestCacherWithClock(s storage.Interface, cap int, clock clock.Clock) (*cacherstorage.Cacher, storage.Versioner, error) {
prefix := "pods"
v := etcd3.APIObjectVersioner{}
config := cacherstorage.Config{
@ -113,7 +122,7 @@ func newTestCacher(s storage.Interface, cap int) (*cacherstorage.Cacher, storage
NewFunc: func() runtime.Object { return &example.Pod{} },
NewListFunc: func() runtime.Object { return &example.PodList{} },
Codec: codecs.LegacyCodec(examplev1.SchemeGroupVersion),
Clock: clock.RealClock{},
Clock: clock,
}
cacher, err := cacherstorage.NewCacherFromConfig(config)
return cacher, v, err
@ -396,7 +405,8 @@ func TestWatch(t *testing.T) {
// Inject one list error to make sure we test the relist case.
etcdStorage = &injectListError{errors: 1, Interface: etcdStorage}
defer server.Terminate(t)
cacher, _, err := newTestCacher(etcdStorage, 3) // small capacity to trigger "too old version" error
fakeClock := clock.NewFakeClock(time.Now())
cacher, _, err := newTestCacherWithClock(etcdStorage, watchCacheDefaultCapacity, fakeClock)
if err != nil {
t.Fatalf("Couldn't create cacher: %v", err)
}
@ -439,15 +449,6 @@ func TestWatch(t *testing.T) {
verifyWatchEvent(t, watcher, watch.Added, podFoo)
verifyWatchEvent(t, watcher, watch.Modified, podFooPrime)
// Check whether we get too-old error via the watch channel
tooOldWatcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", storage.ListOptions{ResourceVersion: "1", Predicate: storage.Everything})
if err != nil {
t.Fatalf("Expected no direct error, got %v", err)
}
defer tooOldWatcher.Stop()
// Events happens in eventFreshDuration, cache expand without event "Gone".
verifyWatchEvent(t, tooOldWatcher, watch.Added, podFoo)
initialWatcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", storage.ListOptions{ResourceVersion: fooCreated.ResourceVersion, Predicate: storage.Everything})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
@ -468,6 +469,25 @@ func TestWatch(t *testing.T) {
_ = updatePod(t, etcdStorage, podFooBis, fooUpdated)
verifyWatchEvent(t, nowWatcher, watch.Modified, podFooBis)
// Add watchCacheDefaultCapacity events to make current watch cache full.
// Make start and last event duration exceed eventFreshDuration(current 75s) to ensure watch cache won't expand.
for i := 0; i < watchCacheDefaultCapacity; i++ {
fakeClock.SetTime(time.Now().Add(time.Duration(i) * time.Minute))
podFoo := makeTestPod(fmt.Sprintf("foo-%d", i))
updatePod(t, etcdStorage, podFoo, nil)
}
// Check whether we get too-old error via the watch channel
tooOldWatcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", storage.ListOptions{ResourceVersion: "1", Predicate: storage.Everything})
if err != nil {
t.Fatalf("Expected no direct error, got %v", err)
}
defer tooOldWatcher.Stop()
// Ensure we get a "Gone" error.
expectedResourceExpiredError := errors.NewResourceExpired("").ErrStatus
verifyWatchEvent(t, tooOldWatcher, watch.Error, &expectedResourceExpiredError)
}
func TestWatcherTimeout(t *testing.T) {