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<?php declare(strict_types=1); |
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/** |
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* This file is part of the daikon-cqrs/boot project. |
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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 Daikon\Boot\MessageBus; |
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use Daikon\EventSourcing\Aggregate\Command\CommandInterface; |
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use Daikon\Interop\Assertion; |
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use Daikon\Interop\RuntimeException; |
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use Daikon\MessageBus\EnvelopeInterface; |
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use Daikon\MessageBus\Channel\Subscription\MessageHandler\MessageHandlerInterface; |
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final class CommandRouter implements MessageHandlerInterface |
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{ |
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private array $spawnedHandlers; |
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private array $handlerMap; |
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public function __construct(array $handlerMap = []) |
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{ |
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$this->handlerMap = $handlerMap; |
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$this->spawnedHandlers = []; |
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} |
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public function handle(EnvelopeInterface $envelope): void |
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{ |
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/** @var CommandInterface $command */ |
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$command = $envelope->getMessage(); |
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Assertion::implementsInterface($command, CommandInterface::class); |
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$commandFqcn = get_class($command); |
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if (!isset($this->handlerMap[$commandFqcn])) { |
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throw new RuntimeException("No handler assigned to given command '$commandFqcn'."); |
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} |
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if (!isset($this->spawnedHandlers[$commandFqcn])) { |
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$this->spawnedHandlers[$commandFqcn] = $this->handlerMap[$commandFqcn](); |
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} |
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$this->spawnedHandlers[$commandFqcn]->handle($envelope); |
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} |
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} |
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daikon-cqrs /
boot
