grpc :[RPC]Add the StatsContainer api for events cli

Add `StatsContainer` API to display container events
Fixes: #221

Signed-off-by: c00416947 <caihaomin@huawei.com>

grpc.go

@@ -718,6 +718,34 @@ func (a *agentGRPC) ListProcesses(ctx context.Context, req *pb.ListProcessesRequ
 	return resp, nil
 }
 
+func (a *agentGRPC) StatsContainer(ctx context.Context, req *pb.StatsContainerRequest) (*pb.StatsContainerResponse, error){
+	c, err := a.sandbox.getContainer(req.ContainerId)
+	if err != nil {
+		return nil, err
+	}
+
+	stats ,err := c.container.Stats()
+	if err != nil {
+		return nil ,err
+	}
+
+	data,err := json.Marshal(stats.CgroupStats)
+	if err != nil {
+		 return nil ,err
+	}
+
+	var cgroupStats pb.CgroupStats
+	err = json.Unmarshal(data,&cgroupStats)
+	if err != nil {
+		return nil,err
+	}
+	resp := &pb.StatsContainerResponse{
+		CgroupStats:&cgroupStats,
+	}
+
+	return resp, nil
+}
+
 func (a *agentGRPC) RemoveContainer(ctx context.Context, req *pb.RemoveContainerRequest) (*gpb.Empty, error) {
 	ctr, err := a.sandbox.getContainer(req.ContainerId)
 	if err != nil {