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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;
- use Psr\Container\ContainerInterface;
- use Symfony\Component\Messenger\Exception\InvalidArgumentException;
- use Symfony\Component\Messenger\Stamp\BusNameStamp;
- /**
- * Bus of buses that is routable using a BusNameStamp.
- *
- * This is useful when passed to Worker: messages received
- * from the transport can be sent to the correct bus.
- *
- * @author Ryan Weaver <ryan@symfonycasts.com>
- */
- class RoutableMessageBus implements MessageBusInterface
- {
- private $busLocator;
- private $fallbackBus;
- public function __construct(ContainerInterface $busLocator, MessageBusInterface $fallbackBus = null)
- {
- $this->busLocator = $busLocator;
- $this->fallbackBus = $fallbackBus;
- }
- public function dispatch($envelope, array $stamps = []): Envelope
- {
- if (!$envelope instanceof Envelope) {
- throw new InvalidArgumentException('Messages passed to RoutableMessageBus::dispatch() must be inside an Envelope.');
- }
- /** @var BusNameStamp|null $busNameStamp */
- $busNameStamp = $envelope->last(BusNameStamp::class);
- if (null === $busNameStamp) {
- if (null === $this->fallbackBus) {
- throw new InvalidArgumentException('Envelope is missing a BusNameStamp and no fallback message bus is configured on RoutableMessageBus.');
- }
- return $this->fallbackBus->dispatch($envelope, $stamps);
- }
- return $this->getMessageBus($busNameStamp->getBusName())->dispatch($envelope, $stamps);
- }
- /**
- * @internal
- */
- public function getMessageBus(string $busName): MessageBusInterface
- {
- if (!$this->busLocator->has($busName)) {
- throw new InvalidArgumentException(sprintf('Bus named "%s" does not exist.', $busName));
- }
- return $this->busLocator->get($busName);
- }
- }
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