main.cpp
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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. *
* ***************************************************************************/
// 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 : ";
pPublisher->connect( "localhost", 1883, "", "", "LWT-test", "connection disrupted.." );
// Assume we are connected now, start publishing.
while( 1 )
{
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++;
}
sleepcp( 1, T_SECONDS );
}
}
else
return -1;
}