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<?php |
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/* |
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* cqrs-symfony-messenger (https://github.com/phpgears/cqrs-symfony-messenger). |
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* CQRS implementation with Symfony's Messenger. |
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* |
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* @license MIT |
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* @link https://github.com/phpgears/cqrs-symfony-messenger |
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* @author Julián Gutiérrez <[email protected]> |
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*/ |
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declare(strict_types=1); |
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namespace Gears\CQRS\Symfony\Messenger; |
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use Gears\CQRS\Exception\InvalidQueryHandlerException; |
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use Gears\CQRS\Query; |
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use Gears\CQRS\QueryHandler; |
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use Gears\DTO\DTO; |
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use Psr\Container\ContainerInterface; |
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use Symfony\Component\Messenger\Envelope; |
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use Symfony\Component\Messenger\Handler\HandlerDescriptor; |
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class ContainerAwareQueryHandlerLocator extends QueryHandlerLocator |
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{ |
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/** |
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* PSR container. |
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* |
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* @var ContainerInterface |
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*/ |
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private $container; |
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/** |
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* ContainerAwareCommandHandlerLocator constructor. |
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* |
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* @param ContainerInterface $container |
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* @param mixed[] $handlers |
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*/ |
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public function __construct(ContainerInterface $container, array $handlers) |
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{ |
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$this->container = $container; |
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parent::__construct($handlers); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws InvalidQueryHandlerException |
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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 ($this->getQueryMap($envelope) as $type) { |
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foreach ($this->handlersMap[$type] ?? [] as $alias => $handler) { |
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$handler = $this->container->get($handler); |
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if (!$handler instanceof QueryHandler) { |
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throw new InvalidQueryHandlerException(\sprintf( |
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'Query handler must implement %s interface, %s given.', |
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QueryHandler::class, |
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\is_object($handler) ? \get_class($handler) : \gettype($handler) |
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)); |
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} |
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$handlerCallable = function (Query $query) use ($handler): DTO { |
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return $handler->handle($query); |
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}; |
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if (!\in_array($handlerCallable, $seen, true)) { |
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$seen[] = $handlerCallable; |
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yield $alias => new HandlerDescriptor($handlerCallable); |
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} |
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} |
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} |
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} |
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} |
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phpgears /
cqrs-symfony-messenger
