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<?php
/**
* $Id$
*
* Author: David Danier, david.danier@team23.de
* Project: Serverstats, http://serverstats.berlios.de/
* License: GPL v2 or later (http://www.gnu.org/licenses/gpl.html)
*
* Copyright (C) 2005 David Danier
*
* 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 of the License, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
class ping extends source implements source_rrd
{
private $host;
private $ping_time;
private $ping_exec;
private $ping_opts;
public function __construct($host, $ping_opts = '-c 1 -W 1', $ping_exec = '/bin/ping')
{
$this->host = $host;
$this->ping_exec = $ping_exec;
$this->ping_opts = $ping_opts;
}
public function refreshData()
{
$opts = preg_split('/\s+/', $this->ping_opts);
$opt_string = '';
foreach ($opts as $opt)
{
$opt_string .= ' ' . escapeshellarg($opt);
}
$command = escapeshellcmd($this->ping_exec) . $opt_string . ' ' . escapeshellarg($this->host);
$output = array();
$return = 0;
exec($command . ' 2>&1', $output, $return);
if ($return != 0)
{
throw new Exception('rrdtool ("' . $command . '") finished with exitcode ' . $return . "\n" . implode("\n", $output));
}
foreach ($output as $line)
{
$matches = array();
if (preg_match('/^.*icmp_req=.+ttl=.+time=([0-9\.]+) ms$/', $line, $matches))
{
$this->ping_time = $matches[1];
break;
}
}
}
public function initRRD(rrd $rrd)
{
$rrd->addDatasource('time', 'GAUGE', null, 0);
}
public function fetchValues()
{
$values = array();
$values['time'] = $this->ping_time;
return $values;
}
}
?>
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