Ejemplo n.º 1
0
// WatchPredicate starts a watch for the items that m matches.
func (e *Etcd) WatchPredicate(ctx api.Context, m generic.Matcher, resourceVersion string) (watch.Interface, error) {
	version, err := tools.ParseWatchResourceVersion(resourceVersion, e.EndpointName)
	if err != nil {
		return nil, err
	}

	filterFunc := func(obj runtime.Object) bool {
		matches, err := m.Matches(obj)
		if err != nil {
			glog.Errorf("unable to match watch: %v", err)
			return false
		}
		if matches && e.Decorator != nil {
			if err := e.Decorator(obj); err != nil {
				glog.Errorf("unable to decorate watch: %v", err)
				return false
			}
		}
		return matches
	}

	if name, ok := m.MatchesSingle(); ok {
		key, err := e.KeyFunc(ctx, name)
		if err != nil {
			return nil, err
		}
		return e.Helper.Watch(key, version, filterFunc)
	}

	return e.Helper.WatchList(e.KeyRootFunc(ctx), version, filterFunc)
}
Ejemplo n.º 2
0
// Watch starts a watch for the items that m matches.
// TODO: Detect if m references a single object instead of a list.
func (e *Etcd) Watch(ctx api.Context, m generic.Matcher, resourceVersion string) (watch.Interface, error) {
	version, err := tools.ParseWatchResourceVersion(resourceVersion, e.EndpointName)
	if err != nil {
		return nil, err
	}
	return e.Helper.WatchList(e.KeyRootFunc(ctx), version, func(obj runtime.Object) bool {
		matches, err := m.Matches(obj)
		return err == nil && matches
	})
}
Ejemplo n.º 3
0
// Watch starts a watch for the items that m matches.
// TODO: Detect if m references a single object instead of a list.
func (e *Etcd) Watch(ctx api.Context, m generic.Matcher, resourceVersion uint64) (watch.Interface, error) {
	return e.Helper.WatchList(e.KeyRoot, resourceVersion, func(obj runtime.Object) bool {
		matches, err := m.Matches(obj)
		return err == nil && matches
	})
}