start

#!/usr/bin/env php
<?php
/**
 * @author Guilherme Almeida Girardi <guilhermeagirardi@gmail.com>
 * @copyright Copyright (c) 2021, Ejetar
 * @version 1.0.0
 *
 * This is the main script of the package, it is responsible for running nethogs tracemode
 * for X time interval.
 *
 * If you do not enter the output path, /var/log/nethogs/YYYY-MM-DD_H.log" will be used
 * by default.
 *
 * The default interval is set to 3600 seconds, that is, one hour.
 *
 * The default mode chosen for nethogs tracemode is 2, that is, result in bytes.
 *
 * Return "OK" at the end of the run, if all goes well.
 */

//Load Composer
require_once 'vendor/autoload.php';

use Spatie\Async\Pool;

$menu = new Commando\Command();

//Output path
$menu->option()
    ->require()
  	->default("/var/log/bandwidth/".date("Y-m-d_H").".log")
    ->describedAs('Output path.');

//Interval in seconds
$menu->option('i')
    ->aka('interval')
  	->default(3600)
	->must(function(int $seconds) {
		return is_int($seconds);
	})
	->describedAs('Capture time in seconds.');

$menu->option('v')
	->aka('view-mode')
	->must(function($value) {
		return in_array($value, [0,1,2,3]);
	})
	->default(2)
	->describedAs('View mode (0 = KB/s, 1 = total KB, 2 = total B, 3 = total MB).');

$last = realpath('./src/last');
$PIDFile = '/tmp/bandwidth-recorder.pid';
$cmd = 'echo $$ > '.$PIDFile.'; /usr/sbin/nethogs -t -v '.$menu['view-mode'].' | '.$last.' '.$menu[0];

$pool = Pool::create()
	->timeout((int) $menu['interval']);

$pool
	->add(function() use($cmd) {
		shell_exec($cmd);
	});

$pool->wait();

//kills the process tree
shell_exec("pkill -TERM -P ".file_get_contents($PIDFile));

exit(0);