open_source / mqtt-cpp

  /* ****************************************************************************
   * Copyright 2019 Open Systems Development BV                                 *
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   * 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:       *
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   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
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   * DEALINGS IN THE SOFTWARE.                                                  *
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  // std
  #include <iostream>
  #include <unistd.h>
  #include <chrono>
  
  #include "subscriber.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[] )
  {
      // Satisfy the compiler
      (void)argc;
      (void)argv;
  
      std::cout << "Creating the subscriber : ";
      // Create the subscriber

      Subscriber *pSubscriber = new Subscriber( "Test_Subscriber" );

      if( pSubscriber != nullptr )
      {
          std::cout << "[OK]" << std::endl;
          std::cout << "Connecting to the test-broker : " << std::endl;

          pSubscriber->connect( "localhost", 1883, "", "" );

          std::cout << "Subscribing to the test-topic....." << std::endl;

          pSubscriber->subscribe( "test/publisher/#" );

  
          // Start a loop to give the subscriber the possibility to do its work.
          while( 1 )
          {

              sleepcp( 1, T_MICRO );   // Sleep 1 Sec to give the scheduler the change to interfene.

          }
      }
      else
      {
          std::cout << "[FAILED]" << std::endl;
          return -1;
      }
      return 0;
  }