text: /*
   * 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.
   */
  
  #include "heron/common/src/cpp/network/misc/echoclient.h"
  #include <stdio.h>
  #include <iostream>
  
  EchoClient::EchoClient(EventLoopImpl* eventLoop, const NetworkOptions& _options,
                         bool _perf)
    : Client(eventLoop, _options), nrequests_(0), perf_(_perf)
  {
    InstallResponseHandler(new EchoServerRequest(), &EchoClient::HandleEchoResponse);
  }
  
  EchoClient::~EchoClient()
  {
  }
  
  void EchoClient::CreateAndSendRequest()
  {
    char buf[1024];
    if (!perf_) {
      char* line = fgets(buf, 1024, stdin);
      if (line == NULL) {
        std::cout << "readline Error in EchoClient!! Bailing out!!\n";
        Stop();
        return;
      }
      if (line[strlen(line) - 1] == '\n') {
        line[strlen(line) - 1] = '\0';
      }
    } else {
      snprintf(buf, sizeof(buf), "I love you");
    }
    std::string tosend(buf);
    EchoServerRequest* request = new EchoServerRequest();
    request->set_echo_request(tosend);
    SendRequest(request, NULL);
    nrequests_++;
    return;
  }
  
  void EchoClient::HandleConnect(NetworkErrorCode _status)
  {
    if (_status == OK) {
      std::cout << "Connected to " << get_clientoptions().get_host()
           << ":" << get_clientoptions().get_port() << std::endl;
      if (perf_) {
        for (int i = 0; i < 1000; ++i) {
          CreateAndSendRequest();
        }
      } else {
        CreateAndSendRequest();
      }
    } else {
      std::cout << "Could not connect to " << get_clientoptions().get_host()
           << ":" << get_clientoptions().get_port() << std::endl;
      Stop();
    }
  }
  
  void EchoClient::HandleClose(NetworkErrorCode)
  {
    std::cout << "Server connection closed\n";
    getEventLoop()->loopExit();
  }
  
  void EchoClient::HandleEchoResponse(void*, std::unique_ptr<EchoServerResponse> _response,
                                      NetworkErrorCode _status)
  {
    if (_status != OK) {
      std::cout << "HandleEchoResponse got an error " << _status << "\n";
    } else {
      if (!perf_) {
        std::cout << _response->echo_response() << std::endl;
      } else {
        if (nrequests_ % 1000 == 0) {
          std::cout << "Received " << nrequests_ << " responses\n";
        }
      }
    }
  
    CreateAndSendRequest();
  }
  