Esempio n. 1
0
func (o objects) Add(obj runtime.Object) error {
	_, kind, err := o.scheme.ObjectVersionAndKind(obj)
	if err != nil {
		return err
	}

	switch {
	case runtime.IsListType(obj):
		if kind != "List" {
			o.types[kind] = append(o.types[kind], obj)
		}

		list, err := runtime.ExtractList(obj)
		if err != nil {
			return err
		}
		if errs := runtime.DecodeList(list, o.decoder); len(errs) > 0 {
			return errs[0]
		}
		for _, obj := range list {
			if err := o.Add(obj); err != nil {
				return err
			}
		}
	default:
		if status, ok := obj.(*unversioned.Status); ok && status.Details != nil {
			kind = status.Details.Kind
		}
		o.types[kind] = append(o.types[kind], obj)
	}

	return nil
}
Esempio n. 2
0
// Returns error if ListAndWatch didn't even tried to initialize watch.
func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
	var resourceVersion string
	resyncCh, cleanup := r.resyncChan()
	defer cleanup()

	list, err := r.listerWatcher.List()
	if err != nil {
		return fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err)
	}
	meta, err := meta.Accessor(list)
	if err != nil {
		return fmt.Errorf("%s: Unable to understand list result %#v", r.name, list)
	}
	resourceVersion = meta.ResourceVersion()
	items, err := runtime.ExtractList(list)
	if err != nil {
		return fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err)
	}
	if err := r.syncWith(items, resourceVersion); err != nil {
		return fmt.Errorf("%s: Unable to sync list result: %v", r.name, err)
	}
	r.setLastSyncResourceVersion(resourceVersion)

	for {
		w, err := r.listerWatcher.Watch(resourceVersion)
		if err != nil {
			switch err {
			case io.EOF:
				// watch closed normally
			case io.ErrUnexpectedEOF:
				glog.V(1).Infof("%s: Watch for %v closed with unexpected EOF: %v", r.name, r.expectedType, err)
			default:
				util.HandleError(fmt.Errorf("%s: Failed to watch %v: %v", r.name, r.expectedType, err))
			}
			// If this is "connection refused" error, it means that most likely apiserver is not responsive.
			// It doesn't make sense to re-list all objects because most likely we will be able to restart
			// watch where we ended.
			// If that's the case wait and resend watch request.
			if urlError, ok := err.(*url.Error); ok {
				if opError, ok := urlError.Err.(*net.OpError); ok {
					if errno, ok := opError.Err.(syscall.Errno); ok && errno == syscall.ECONNREFUSED {
						time.Sleep(time.Second)
						continue
					}
				}
			}
			return nil
		}
		if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
			if err != errorResyncRequested && err != errorStopRequested {
				glog.Warningf("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
			}
			return nil
		}
	}
}