Golang Watcher.Chan Examples

Example #1

File: watch.go Project: kimsh92/etcd

func sendLoop(stream pb.Watch_WatchServer, watcher storage.Watcher, closec chan struct{}) {
	for {
		select {
		case e, ok := <-watcher.Chan():
			if !ok {
				return
			}
			err := stream.Send(&pb.WatchResponse{Event: &e})
			storage.ReportEventReceived()
			if err != nil {
				return
			}
		case <-closec:
			// drain the chan to clean up pending events
			for {
				_, ok := <-watcher.Chan()
				if !ok {
					return
				}
				storage.ReportEventReceived()
			}
			return
		}
	}
}

Example #2

File: watch.go Project: navneetk/etcd

func sendLoop(stream pb.Watch_WatchServer, watcher storage.Watcher, closec chan struct{}) {
	for {
		select {
		case e := <-watcher.Chan():
			err := stream.Send(&pb.WatchResponse{Event: &e})
			if err != nil {
				return
			}
		case <-closec:
			return
		}
	}
}