etcdserver/api/v3rpc: watch.go with events slice

etcdserver/api/v3rpc/watch.go

@@ -19,6 +19,7 @@ import (
 
 	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
 	"github.com/coreos/etcd/storage"
+	"github.com/coreos/etcd/storage/storagepb"
 )
 
 type watchServer struct {
@@ -61,15 +62,25 @@ func (ws *watchServer) Watch(stream pb.Watch_WatchServer) error {
 func sendLoop(stream pb.Watch_WatchServer, watcher storage.Watcher, closec chan struct{}) {
 	for {
 		select {
-		case e, ok := <-watcher.Chan():
+		case evs, ok := <-watcher.Chan():
 			if !ok {
 				return
 			}
-			err := stream.Send(&pb.WatchResponse{Event: &e})
+
+			// TODO: evs is []storagepb.Event type
+			// either return []*storagepb.Event from storage package
+			// or define protocol buffer with []storagepb.Event.
+			events := make([]*storagepb.Event, len(evs))
+			for i := range evs {
+				events[i] = &evs[i]
+			}
+
+			err := stream.Send(&pb.WatchResponse{Events: events})
 			storage.ReportEventReceived()
 			if err != nil {
 				return
 			}
+
 		case <-closec:
 			// drain the chan to clean up pending events
 			for {