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HandlersLocator.php
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HandlersLocator.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Messenger\Handler;
use Symfony\Component\Messenger\Envelope;
/**
* Maps a message to a list of handlers.
*
* @author Nicolas Grekas <p@tchwork.com>
*
* @experimental in 4.2
*/
class HandlersLocator implements HandlersLocatorInterface
{
private $handlers;
/**
* @param callable[][] $handlers
*/
public function __construct(array $handlers)
{
$this->handlers = $handlers;
}
/**
* {@inheritdoc}
*/
public function getHandlers(Envelope $envelope): iterable
{
$seen = array();
foreach (self::listTypes($envelope) as $type) {
foreach ($this->handlers[$type] ?? array() as $handler) {
if (!\in_array($handler, $seen, true)) {
yield $seen[] = $handler;
}
}
}
}
/**
* @internal
*/
public static function listTypes(Envelope $envelope): array
{
$class = \get_class($envelope->getMessage());
return array($class => $class)
+ class_parents($class)
+ class_implements($class)
+ array('*' => '*');
}
}