Github user zuyu commented on a diff in the pull request:

    https://github.com/apache/incubator-quickstep/pull/232#discussion_r112790553
  
    --- Diff: cli/NetworkCliClient.hpp ---
    @@ -0,0 +1,91 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *   http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing,
    + * software distributed under the License is distributed on an
    + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    + * KIND, either express or implied.  See the License for the
    + * specific language governing permissions and limitations
    + * under the License.
    + **/
    +
    +#ifndef QUICKSTEP_CLI_SINGLE_NODE_CLIENT_HPP_
    +#define QUICKSTEP_CLI_SINGLE_NODE_CLIENT_HPP_
    +
    +#include <grpc++/grpc++.h>
    +
    +#include <iostream>
    +#include <memory>
    +#include <string>
    +#include <vector>
    +
    +#include "cli/NetworkCli.grpc.pb.h"
    +#include "cli/NetworkCli.pb.h"
    +
    +#include "gflags/gflags.h"
    +#include "glog/logging.h"
    +
    +using grpc::Channel;
    +using grpc::ClientContext;
    +using grpc::Status;
    +
    +namespace quickstep {
    +
    +/**
    + * A simple wrapper class used to do CLI interactions with QuickstepCLI 
via the gRPC interface.
    + */
    +class NetworkCliClient {
    + public:
    +  explicit NetworkCliClient(std::shared_ptr<Channel> const &channel)
    --- End diff --
    
    By consistency, we should be aligned with all usages in the codebase. Thus, 
`const Foo &foo`.


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