90 lines
2.2 KiB
PHP
90 lines
2.2 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Messenger\Handler;
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use Symfony\Component\Messenger\Envelope;
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use Symfony\Component\Messenger\Stamp\ReceivedStamp;
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/**
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* Maps a message to a list of handlers.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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* @author Samuel Roze <samuel.roze@gmail.com>
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*/
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class HandlersLocator implements HandlersLocatorInterface
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{
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private $handlers;
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/**
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* @param HandlerDescriptor[][]|callable[][] $handlers
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*/
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public function __construct(array $handlers)
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{
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$this->handlers = $handlers;
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}
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/**
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* {@inheritdoc}
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*/
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public function getHandlers(Envelope $envelope): iterable
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{
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$seen = [];
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foreach (self::listTypes($envelope) as $type) {
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foreach ($this->handlers[$type] ?? [] as $handlerDescriptor) {
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if (\is_callable($handlerDescriptor)) {
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$handlerDescriptor = new HandlerDescriptor($handlerDescriptor);
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}
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if (!$this->shouldHandle($envelope, $handlerDescriptor)) {
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continue;
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}
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$name = $handlerDescriptor->getName();
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if (\in_array($name, $seen)) {
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continue;
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}
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$seen[] = $name;
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yield $handlerDescriptor;
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}
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}
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}
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/**
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* @internal
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*/
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public static function listTypes(Envelope $envelope): array
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{
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$class = \get_class($envelope->getMessage());
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return [$class => $class]
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+ class_parents($class)
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+ class_implements($class)
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+ ['*' => '*'];
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}
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private function shouldHandle(Envelope $envelope, HandlerDescriptor $handlerDescriptor): bool
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{
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if (null === $received = $envelope->last(ReceivedStamp::class)) {
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return true;
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}
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if (null === $expectedTransport = $handlerDescriptor->getOption('from_transport')) {
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return true;
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}
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return $received->getTransportName() === $expectedTransport;
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}
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}
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