so_5/exception_logger/main.cpp

/*
 * A sample of the exception logger.
 */
 
#include <iostream>
#include <stdexcept>
 
// Main SObjectizer header file.
#include <so_5/all.hpp>
 
// A class of the exception logger.
class sample_event_exception_logger_t final
  : public so_5::event_exception_logger_t
{
  public:
    // A reaction to an exception.
    void log_exception(
      const std::exception & event_exception,
      const so_5::coop_handle_t & coop ) noexcept override
    {
      std::cerr
        << "Event_exception, coop:"
        << coop << "; "
        " error: "
        << event_exception.what()
        << std::endl;
    }
};
 
// A class of an agent which will throw an exception.
class a_hello_t final : public so_5::agent_t
{
  public:
    a_hello_t( context_t ctx ) : so_5::agent_t( ctx )
    {}
 
    // A reaction to start work in SObjectizer.
    void so_evt_start() override
    {
      so_environment().install_exception_logger(
        std::make_unique<sample_event_exception_logger_t>() );
 
      throw std::runtime_error( "sample exception" );
    }
 
    // An instruction to SObjectizer for unhandled exception.
    so_5::exception_reaction_t so_exception_reaction() const noexcept override
    {
      return so_5::deregister_coop_on_exception;
    }
};
 
int main()
{
  try
  {
    so_5::launch(
      // SObjectizer initialization code.
      []( so_5::environment_t & env )
      {
        // Creating and registering cooperation with a single agent.
        env.register_agent_as_coop( env.make_agent< a_hello_t >() );
      } );
  }
  catch( const std::exception & ex )
  {
    std::cerr << "Error: " << ex.what() << std::endl;
    return 1;
  }
 
  return 0;
}