func testCheckEventType(t *testing.T, expectEventType watch.EventType, w watch.Interface) {
select {
case res := <-w.ResultChan():
if res.Type != expectEventType {
t.Errorf("event type want=%v, get=%v", expectEventType, res.Type)
}
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("time out after waiting %v on ResultChan", wait.ForeverTestTimeout)
}
}
func observeCreation(w watch.Interface) {
select {
case event, _ := <-w.ResultChan():
if event.Type != watch.Added {
framework.Failf("Failed to observe the creation: %v", event)
}
case <-time.After(30 * time.Second):
framework.Failf("Timeout while waiting for observing the creation")
}
}
func waitForAnyPersistentVolumeClaimPhase(w watch.Interface, phase v1.PersistentVolumeClaimPhase) {
for {
event := <-w.ResultChan()
claim, ok := event.Object.(*v1.PersistentVolumeClaim)
if !ok {
continue
}
if claim.Status.Phase == phase {
glog.V(2).Infof("claim %q is %s", claim.Name, phase)
break
}
}
}
func waitForAnyPersistentVolumePhase(w watch.Interface, phase v1.PersistentVolumePhase) {
for {
event := <-w.ResultChan()
volume, ok := event.Object.(*v1.PersistentVolume)
if !ok {
continue
}
if volume.Status.Phase == phase {
glog.V(2).Infof("volume %q is %s", volume.Name, phase)
break
}
}
}
func testCheckResult(t *testing.T, i int, expectEventType watch.EventType, w watch.Interface, expectObj *api.Pod) {
select {
case res := <-w.ResultChan():
if res.Type != expectEventType {
t.Errorf("#%d: event type want=%v, get=%v", i, expectEventType, res.Type)
return
}
if !reflect.DeepEqual(expectObj, res.Object) {
t.Errorf("#%d: obj want=\n%#v\nget=\n%#v", i, expectObj, res.Object)
}
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("#%d: time out after waiting %v on ResultChan", i, wait.ForeverTestTimeout)
}
}
func testCheckStop(t *testing.T, i int, w watch.Interface) {
select {
case e, ok := <-w.ResultChan():
if ok {
var obj string
switch e.Object.(type) {
case *api.Pod:
obj = e.Object.(*api.Pod).Name
case *metav1.Status:
obj = e.Object.(*metav1.Status).Message
}
t.Errorf("#%d: ResultChan should have been closed. Event: %s. Object: %s", i, e.Type, obj)
}
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("#%d: time out after waiting 1s on ResultChan", i)
}
}
func verifyWatchEvent(t *testing.T, w watch.Interface, eventType watch.EventType, eventObject runtime.Object) {
_, _, line, _ := goruntime.Caller(1)
select {
case event := <-w.ResultChan():
if e, a := eventType, event.Type; e != a {
t.Logf("(called from line %d)", line)
t.Errorf("Expected: %s, got: %s", eventType, event.Type)
}
if e, a := eventObject, event.Object; !api.Semantic.DeepDerivative(e, a) {
t.Logf("(called from line %d)", line)
t.Errorf("Expected (%s): %#v, got: %#v", eventType, e, a)
}
case <-time.After(wait.ForeverTestTimeout):
t.Logf("(called from line %d)", line)
t.Errorf("Timed out waiting for an event")
}
}
func observeObjectDeletion(w watch.Interface) (obj runtime.Object) {
deleted := false
timeout := false
timer := time.After(60 * time.Second)
for !deleted && !timeout {
select {
case event, _ := <-w.ResultChan():
if event.Type == watch.Deleted {
obj = event.Object
deleted = true
}
case <-timer:
timeout = true
}
}
if !deleted {
framework.Failf("Failed to observe pod deletion")
}
return
}
func waitForPersistentVolumeClaimPhase(client *clientset.Clientset, claimName, namespace string, w watch.Interface, phase v1.PersistentVolumeClaimPhase) {
// Check if the claim is already in requested phase
claim, err := client.Core().PersistentVolumeClaims(namespace).Get(claimName, metav1.GetOptions{})
if err == nil && claim.Status.Phase == phase {
return
}
// Wait for the phase
for {
event := <-w.ResultChan()
claim, ok := event.Object.(*v1.PersistentVolumeClaim)
if !ok {
continue
}
if claim.Status.Phase == phase && claim.Name == claimName {
glog.V(2).Infof("claim %q is %s", claim.Name, phase)
break
}
}
}
func waitForPersistentVolumePhase(client *clientset.Clientset, pvName string, w watch.Interface, phase v1.PersistentVolumePhase) {
// Check if the volume is already in requested phase
volume, err := client.Core().PersistentVolumes().Get(pvName, metav1.GetOptions{})
if err == nil && volume.Status.Phase == phase {
return
}
// Wait for the phase
for {
event := <-w.ResultChan()
volume, ok := event.Object.(*v1.PersistentVolume)
if !ok {
continue
}
if volume.Status.Phase == phase && volume.Name == pvName {
glog.V(2).Infof("volume %q is %s", volume.Name, phase)
break
}
}
}
// ensure the watch delivers the requested and only the requested items.
func consume(t *testing.T, w watch.Interface, rvs []string, done *sync.WaitGroup) {
defer done.Done()
for _, rv := range rvs {
got, ok := <-w.ResultChan()
if !ok {
t.Errorf("%#v: unexpected channel close, wanted %v", rvs, rv)
return
}
gotRV := got.Object.(*v1.Pod).ObjectMeta.ResourceVersion
if e, a := rv, gotRV; e != a {
t.Errorf("wanted %v, got %v", e, a)
} else {
t.Logf("Got %v as expected", gotRV)
}
}
// We should not get anything else.
got, open := <-w.ResultChan()
if open {
t.Errorf("%#v: unwanted object %#v", rvs, got)
}
}
// watchRollbackEvent watches for rollback events and returns rollback result
func watchRollbackEvent(w watch.Interface) string {
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt, os.Kill, syscall.SIGTERM)
for {
select {
case event, ok := <-w.ResultChan():
if !ok {
return ""
}
obj, ok := event.Object.(*api.Event)
if !ok {
w.Stop()
return ""
}
isRollback, result := isRollbackEvent(obj)
if isRollback {
w.Stop()
return result
}
case <-signals:
w.Stop()
}
}
}
// watchHandler watches w and keeps *resourceVersion up to date.
func (r *Reflector) watchHandler(w watch.Interface, resourceVersion *string, errc chan error, stopCh <-chan struct{}) error {
start := time.Now()
eventCount := 0
// Stopping the watcher should be idempotent and if we return from this function there's no way
// we're coming back in with the same watch interface.
defer w.Stop()
loop:
for {
select {
case <-stopCh:
return errorStopRequested
case err := <-errc:
return err
case event, ok := <-w.ResultChan():
if !ok {
break loop
}
if event.Type == watch.Error {
return apierrs.FromObject(event.Object)
}
if e, a := r.expectedType, reflect.TypeOf(event.Object); e != nil && e != a {
utilruntime.HandleError(fmt.Errorf("%s: expected type %v, but watch event object had type %v", r.name, e, a))
continue
}
meta, err := meta.Accessor(event.Object)
if err != nil {
utilruntime.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
continue
}
newResourceVersion := meta.GetResourceVersion()
switch event.Type {
case watch.Added:
err := r.store.Add(event.Object)
if err != nil {
utilruntime.HandleError(fmt.Errorf("%s: unable to add watch event object (%#v) to store: %v", r.name, event.Object, err))
}
case watch.Modified:
err := r.store.Update(event.Object)
if err != nil {
utilruntime.HandleError(fmt.Errorf("%s: unable to update watch event object (%#v) to store: %v", r.name, event.Object, err))
}
case watch.Deleted:
// TODO: Will any consumers need access to the "last known
// state", which is passed in event.Object? If so, may need
// to change this.
err := r.store.Delete(event.Object)
if err != nil {
utilruntime.HandleError(fmt.Errorf("%s: unable to delete watch event object (%#v) from store: %v", r.name, event.Object, err))
}
default:
utilruntime.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
}
*resourceVersion = newResourceVersion
r.setLastSyncResourceVersion(newResourceVersion)
eventCount++
}
}
watchDuration := time.Now().Sub(start)
if watchDuration < 1*time.Second && eventCount == 0 {
glog.V(4).Infof("%s: Unexpected watch close - watch lasted less than a second and no items received", r.name)
return errors.New("very short watch")
}
glog.V(4).Infof("%s: Watch close - %v total %v items received", r.name, r.expectedType, eventCount)
return nil
}
