79 lines
2.0 KiB
PHP
79 lines
2.0 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/**
|
|
* @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
*
|
|
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\EventDispatcher;
|
|
|
|
use OCP\AppFramework\QueryException;
|
|
use OCP\EventDispatcher\Event;
|
|
use OCP\EventDispatcher\IEventListener;
|
|
use OCP\IContainer;
|
|
use OCP\ILogger;
|
|
|
|
/**
|
|
* Lazy service event listener
|
|
*
|
|
* Makes it possible to lazy-route a dispatched event to a service instance
|
|
* created by the service container
|
|
*/
|
|
final class ServiceEventListener {
|
|
|
|
/** @var IContainer */
|
|
private $container;
|
|
|
|
/** @var string */
|
|
private $class;
|
|
|
|
/** @var ILogger */
|
|
private $logger;
|
|
|
|
/** @var null|IEventListener */
|
|
private $service;
|
|
|
|
public function __construct(IContainer $container,
|
|
string $class,
|
|
ILogger $logger) {
|
|
$this->container = $container;
|
|
$this->class = $class;
|
|
$this->logger = $logger;
|
|
}
|
|
|
|
public function __invoke(Event $event) {
|
|
if ($this->service === null) {
|
|
try {
|
|
$this->service = $this->container->query($this->class);
|
|
} catch (QueryException $e) {
|
|
$this->logger->logException($e, [
|
|
'level' => ILogger::ERROR,
|
|
'message' => "Could not load event listener service " . $this->class,
|
|
]);
|
|
return;
|
|
}
|
|
}
|
|
|
|
$this->service->handle($event);
|
|
}
|
|
}
|