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 "subscriber.h"
const int MAX_LOOP_COUNT = 10;
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[] )
{
int loop_counter = 0;
// 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, "", "", "test/subscriber/LWT", "Subscriber disconnected." );
std::cout << "Subscribing to the test-topic....." << std::endl;
pSubscriber->subscribe( "test/publisher/TestPublisher_0" );
pSubscriber->subscribe( "test/publisher/TestPublisher_1" );
pSubscriber->subscribe( "test/publisher/TestPublisher_2" );
pSubscriber->subscribe( "test/publisher/TestPublisher_3" );
// Start a loop to give the subscriber the possibility to do its work.
while (loop_counter < MAX_LOOP_COUNT)
{
sleepcp( 1, T_SECONDS ); // Sleep 1 Sec to give the scheduler the change to interfene.
loop_counter++;
}
std::cout << "Unsubscribing from test/publisher/#" << std::endl;
pSubscriber->unsubscribe("test/publisher/#" );
pSubscriber->unsubscribe( "test/publisher/TestPublisher_0" );
pSubscriber->unsubscribe( "test/publisher/TestPublisher_1" );
pSubscriber->unsubscribe( "test/publisher/TestPublisher_2" );
pSubscriber->unsubscribe( "test/publisher/TestPublisher_3" );
// Start a loop to give the subscriber the possibility to do its work.
while (loop_counter < MAX_LOOP_COUNT)
{
sleepcp( 1, T_SECONDS ); // Sleep 1 Sec to give the scheduler the change to interfene.
loop_counter++;
}
pSubscriber->subscribe("test/publisher/#");
while (1)
{
sleepcp(1, T_MILLI); // Sleep 1 mSec to give the scheduler the change to interfene.
}
}
else
{
std::cout << "[FAILED]" << std::endl;
return -1;
}
return 0;
}