DiskUsageDashlet.inc.php
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<?php
/**
*
* Copyright (c) 2007 Jam Warehouse http://www.jamwarehouse.com
*
* 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; using version 2 of the License.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* -------------------------------------------------------------------------
*
* You can contact the copyright owner regarding licensing via the contact
* details that can be found on the KnowledgeTree web site:
*
* http://www.knowledgetree.com/
*/
class DiskUsageDashlet extends KTBaseDashlet
{
private $dfCmd;
private $usage;
private $warningPercent;
private $urgentPercent;
function DiskUsageDashlet()
{
$this->sTitle = _kt('Disk Usage');
$this->sClass = "ktInfo";
}
function is_active($oUser)
{
$dfCmd = KTUtil::findCommand('externalBinary/df','df');
if ($dfCmd === false)
{
return false;
}
$this->dfCmd = $dfCmd;
$config = KTConfig::getSingleton();
$this->warningPercent = $config->get('DiskUsage/warningThreshold', 15);
$this->urgentPercent = $config->get('DiskUsage/urgentThreshold', 5);
$this->getUsage();
return Permission::userIsSystemAdministrator();
}
function getUsage($refresh=false)
{
$check = true;
// check if we have a cached result
if (isset($_SESSION['DiskUsage']))
{
// we will only do the check every 5 minutes
if (time() - $_SESSION['DiskUsage']['time'] < 5 * 60)
{
$check = false;
$this->usage = $_SESSION['DiskUsage']['usage'];
}
}
// we will only check if the result is not cached, or after 5 minutes
if ($check)
{
$result = ktutil::pexec($this->dfCmd);
$result = $result['out'];
unset($result[0]);
$usage=array();
foreach($result as $line)
{
preg_match('/(.*)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\%\s+(.*)/', $line, $matches);
list($line, $filesystem, $size, $used, $avail, $usedp, $mount) = $matches;
if ($usedp >= 100 - $this->urgentPercent)
{
$colour = 'red';
}
elseif ($usedp >= 100 - $this->warningPercent)
{
$colour = 'orange';
}
$usage[] = array(
'filesystem'=>$filesystem,
'size'=>KTUtil::filesizeToString($size),
'used'=>KTUtil::filesizeToString($used),
'available'=>KTUtil::filesizeToString($avail),
'usage'=>$usedp . '%',
'mounted'=>$mount,
'colour'=>$colour
);
}
$this->usage = $usage;
$_SESSION['DiskUsage']['time'] = time();
$_SESSION['DiskUsage']['usage'] = $this->usage;
}
}
function render()
{
$oTemplating =& KTTemplating::getSingleton();
$oTemplate = $oTemplating->loadTemplate('DiskUsage');
$oRegistry =& KTPluginRegistry::getSingleton();
$oPlugin =& $oRegistry->getPlugin('ktcore.housekeeper.plugin');
$dispatcherURL = $oPlugin->getURLPath('HouseKeeperDispatcher.php');
$aTemplateData = array(
'context' => $this,
'usages'=>$this->usage,
'warnPercent'=>$this->warningPercent,
'urgentPercent'=>$this->urgentPercent,
'dispatcherURL'=>$dispatcherURL
);
return $oTemplate->render($aTemplateData);
}
}
?>