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examples/pub/main.cpp 3.65 KB
b5d9e433   Peter M. Groen   Fixed License Hea...
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  /* ****************************************************************************
   * Copyright 2019 Open Systems Development BV                                 *
   *                                                                            *
   * Permission is hereby granted, free of charge, to any person obtaining a    *
   * copy of this software and associated documentation files (the "Software"), *
   * to deal in the Software without restriction, including without limitation  *
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
   * and/or sell copies of the Software, and to permit persons to whom the      *
   * Software is furnished to do so, subject to the following conditions:       *
   *                                                                            *
   * The above copyright notice and this permission notice shall be included in *
   * all copies or substantial portions of the Software.                        *
   *                                                                            *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    *
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        *
   * DEALINGS IN THE SOFTWARE.                                                  *
   * ***************************************************************************/
51becbde   Peter M. Groen   Committed the ent...
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  // std
  #include <iostream>
  #include <unistd.h>
  #include <chrono>
  
  #include "publisher.h"
  
  enum TIME_RES
  {
      T_MICRO,
      T_MILLI,
      T_SECONDS
  };
  
  std::uint64_t getEpochUSecs()
  {
      auto tsUSec =std::chrono::time_point_cast<std::chrono::microseconds>(std::chrono::system_clock::now());
      return static_cast<std::uint64_t>(tsUSec.time_since_epoch().count());
  }
  
  
  void sleepcp( int number, TIME_RES resolution = T_MILLI )    // Cross-platform sleep function
  {
      int factor = 0; // Should not happen..
  
      switch( resolution )
      {
          case T_MICRO:
              factor = 1;
              break;
  
          case T_MILLI:
              factor = 1000;
              break;
  
          case T_SECONDS:
              factor = 1000000;
          break;
      }
  
      usleep( number * factor );
  }
  
  int main( int argc, char* argv[] )
  {
      // We're not using the command parameters, so we just want to keep the compiler happy.
      (void)argc;
      (void)argv;
  
      uint64_t messageNumber = 0;
  
      // Create the publisher, run it and publish a message every 0.001 sec.
      std::cout << "Create the publisher object : ";
      Publisher *pPublisher = new Publisher();
      if( pPublisher != nullptr )
      {
          std::cout << "{OK}" << std::endl;
          std::cout << "Connecting to the broker : ";
c101a0ca   Peter M. Groen   Processed Review ...
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          pPublisher->connect( "localhost", 1883, "", "" );
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          // Assume we are connected now, start publishing.
          while( 1 )
          {
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              for( unsigned int nCount = 0; nCount < 10; nCount++ )
              {
                  std::string payload = "<Timestamp value=\"" + std::to_string( getEpochUSecs() ) + "\" /><MessageNumber value=\"" + std::to_string( messageNumber ) + "\" />" ;
                  pPublisher->publish( std::string( "test/publisher/TestPublisher_" + std::to_string( nCount ) ), payload );
  
                  if( messageNumber > 2000000000 )
                  {
                      messageNumber = -1;
                  }
                  messageNumber++;
              }
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              sleepcp( 1, T_MICRO );
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          }
      }
      else
          return -1;
  
  }