main.cpp
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/* Copyright (C) 2019
*
* This file is part of the osdev components suite
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
// 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();
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/TestPublisher" );
// Start a loop to give the subscriber the possibility to do its work.
while( 1 )
{
sleepcp( 1, T_SECONDS ); // Sleep 1 Sec to give the scheduler the change to interfene.
}
}
else
{
std::cout << "[FAILED]" << std::endl;
return -1;
}
return 0;
}