MyDaemonExample.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. *
* ****************************************************************************/
#include "daemonbase.h"
#include <cstdlib>
using namespace osdev::components::daemon;
using namespace std::chrono_literals;
class MyExampleDaemon : public DaemonBase
{
public:
void on_start(const daemonconfig &config) override
{
/// Called once after daemon starts automatically with system startup
/// or when you manually call `$ system,ctl start MyExampleDaemon`
/// Initialize your code here...
daemonlog::info("MyExampleDaemon::on_start(): MyExampleDaemon version: " + config.get("version") + " started successfully!");
}
void on_update() override
{
/// Called every DURATION set in set_update_duration()...
/// Update your code here
daemonlog::info("MyExampleDaemon::on_update()");
}
void on_stop() override
{
/// Called once before daemon is about to exit with system shutdown or when you manually call `$ systemctl stop MyExampleDaemon`
/// Cleanup your code here...
daemonlog::info("MyExampleDaemon::on_stop()");
}
void on_reload(const daemonconfig &cfg) override
{
/// Called once after your daemon's config fil is updated then reloaded with `$ systemctl reload MyExampleDaemon`
/// Handle your config updates here...
daemonlog::info("MyExampleDaemon::on_reload(): new daemon version from updated config: " + cfg.get("version"));
}
};
int main(int argc, char *argv[])
{
MyExampleDaemon oDaemon; // Create the daemon instance.
oDaemon.set_name("MyAweSomeExampleDaemon"); // Set daemon name to identify logs in syslog
oDaemon.set_update_duration(3s); // Set duration to sleep before triggering the on_update callback 3 seconds.
oDaemon.set_cwd("/root"); // set daemon's current working directory to roots home-folder
oDaemon.run(argc, argv); // run the daemon
return(EXIT_SUCCESS); // Close the main process now the child process is running.
}