/usr/share/php/Icinga/Application/Hook/GrapherHook.php is in php-icinga 2.1.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Application\Hook;
use Icinga\Exception\ProgrammingError;
use Icinga\Module\Monitoring\Object\MonitoredObject;
/**
* Icinga Web Grapher Hook base class
*
* Extend this class if you want to integrate your graphing solution nicely into
* Icinga Web.
*/
abstract class GrapherHook extends WebBaseHook
{
/**
* Whether this grapher provides previews
*
* @var bool
*/
protected $hasPreviews = false;
/**
* Whether this grapher provides tiny previews
*
* @var bool
*/
protected $hasTinyPreviews = false;
/**
* Constructor must live without arguments right now
*
* Therefore the constructor is final, we might change our opinion about
* this one far day
*/
final public function __construct()
{
$this->init();
}
/**
* Overwrite this function if you want to do some initialization stuff
*
* @return void
*/
protected function init()
{
}
/**
* Whether this grapher provides previews
*
* @return bool
*/
public function hasPreviews()
{
return $this->hasPreviews;
}
/**
* Whether this grapher provides tiny previews
*
* @return bool
*/
public function hasTinyPreviews()
{
return $this->hasTinyPreviews;
}
/**
* Whether a graph for the monitoring object exist
*
* @param MonitoredObject $object
*
* @return bool
*/
abstract public function has(MonitoredObject $object);
/**
* Get a preview for the given object
*
* This function must return an empty string if no graph exists.
*
* @param MonitoredObject $object
*
* @return string
* @throws ProgrammingError
*
*/
public function getPreviewHtml(MonitoredObject $object)
{
throw new ProgrammingError('This hook provide previews but it is not implemented');
}
/**
* Get a tiny preview for the given object
*
* This function must return an empty string if no graph exists.
*
* @param MonitoredObject $object
*
* @return string
* @throws ProgrammingError
*/
public function getTinyPreviewHtml(MonitoredObject $object)
{
throw new ProgrammingError('This hook provide tiny previews but it is not implemented');
}
}
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