// verifyNoEvents verifies there is no event generated
func verifyNoEvents(e client.EventInterface, options api.ListOptions) error {
events, err := e.List(options)
if err != nil {
return err
}
if len(events.Items) != 0 {
return fmt.Errorf("unexpected events: %v", events.Items)
}
return nil
}
// verifyEvents verifies there are num specific events generated
func verifyEvents(e client.EventInterface, options api.ListOptions, num int, reason, message string) error {
events, err := e.List(options)
if err != nil {
return err
}
count := 0
for _, event := range events.Items {
if event.Reason != reason || event.Message != message {
return fmt.Errorf("unexpected event: %v", event)
}
count += int(event.Count)
}
if count != num {
return fmt.Errorf("expect event number %d, got %d: %v", num, count, events.Items)
}
return nil
}
// watchLoop loops forever looking for new events. If an error occurs it will close the channel and return.
func (eventSource *eventsSourceImpl) watchLoop(eventClient kubeclient.EventInterface, eventsChan chan<- eventsUpdate, errorChan chan<- error) {
defer close(eventsChan)
defer close(errorChan)
events, err := eventClient.List(kubelabels.Everything(), kubefields.Everything())
if err != nil {
glog.Errorf("Failed to load events: %v", err)
errorChan <- err
return
}
resourceVersion := events.ResourceVersion
eventsChan <- eventsUpdate{events: events}
if err := eventSource.storeEventsInCache(events); err != nil {
glog.Errorf("failed to store events in cache: %v", err)
errorChan <- err
return
}
watcher, err := eventClient.Watch(kubelabels.Everything(), kubefields.Everything(), resourceVersion)
if err != nil {
glog.Errorf("Failed to start watch for new events: %v", err)
errorChan <- err
return
}
defer watcher.Stop()
watchChannel := watcher.ResultChan()
for {
watchUpdate, ok := <-watchChannel
if !ok {
err := errors.New("watchLoop channel closed")
errorChan <- err
return
}
if watchUpdate.Type == kubewatch.Error {
if status, ok := watchUpdate.Object.(*kubeapiunv.Status); ok {
err := fmt.Errorf("Error during watch: %#v", status)
errorChan <- err
return
}
err := fmt.Errorf("Received unexpected error: %#v", watchUpdate.Object)
errorChan <- err
return
}
if event, ok := watchUpdate.Object.(*kubeapi.Event); ok {
switch watchUpdate.Type {
case kubewatch.Added, kubewatch.Modified:
eList := &kubeapi.EventList{Items: []kubeapi.Event{*event}}
eventsChan <- eventsUpdate{eList}
if err := eventSource.storeEventsInCache(eList); err != nil {
glog.Errorf("failed to store events in cache: %v", err)
errorChan <- err
return
}
case kubewatch.Deleted:
// Deleted events are silently ignored
default:
err := fmt.Errorf("Unknown watchUpdate.Type: %#v", watchUpdate.Type)
errorChan <- err
return
}
resourceVersion = event.ResourceVersion
continue
}
}
}