KernelDestructionSubscriber.php in Zircon Profile 8.0
Same filename and directory in other branches
Namespace
Drupal\Core\EventSubscriberFile
core/lib/Drupal/Core/EventSubscriber/KernelDestructionSubscriber.phpView source
<?php
/**
* @file
* Contains \Drupal\Core\EventSubscriber\KernelDestructionSubscriber.
*/
namespace Drupal\Core\EventSubscriber;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerAwareTrait;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\PostResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
/**
* Destructs services that are initiated and tagged with "needs_destruction".
*
* @see \Drupal\Core\DestructableInterface
*/
class KernelDestructionSubscriber implements EventSubscriberInterface, ContainerAwareInterface {
use ContainerAwareTrait;
/**
* Holds an array of service ID's that will require destruction.
*
* @var array
*/
protected $services = array();
/**
* Registers a service for destruction.
*
* Calls to this method are set up in
* RegisterServicesForDestructionPass::process().
*
* @param string $id
* Name of the service.
*/
public function registerService($id) {
$this->services[] = $id;
}
/**
* Invoked by the terminate kernel event.
*
* @param \Symfony\Component\HttpKernel\Event\PostResponseEvent $event
* The event object.
*/
public function onKernelTerminate(PostResponseEvent $event) {
foreach ($this->services as $id) {
// Check if the service was initialized during this request, destruction
// is not necessary if the service was not used.
if ($this->container
->initialized($id)) {
$service = $this->container
->get($id);
$service
->destruct();
}
}
}
/**
* Registers the methods in this class that should be listeners.
*
* @return array
* An array of event listener definitions.
*/
static function getSubscribedEvents() {
$events[KernelEvents::TERMINATE][] = array(
'onKernelTerminate',
100,
);
return $events;
}
}
Classes
Name | Description |
---|---|
KernelDestructionSubscriber | Destructs services that are initiated and tagged with "needs_destruction". |