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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/message-bus 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\MessageBus\Channel\Subscription; |
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use Closure; |
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use Daikon\MessageBus\EnvelopeInterface; |
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use Daikon\MessageBus\MessageBusInterface; |
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final class LazySubscription implements SubscriptionInterface |
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{ |
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private string $key; |
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private Closure $factoryCallback; |
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private SubscriptionInterface $compositeSubscription; |
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public function __construct( |
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string $key, |
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Closure $transport, |
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Closure $messageHandlers, |
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Closure $guard = null, |
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Closure $metadataEnrichers = null |
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) { |
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$this->key = $key; |
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$this->factoryCallback = fn(): Subscription => |
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new Subscription( |
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$this->key, |
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$transport(), |
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$messageHandlers(), |
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$guard, |
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$metadataEnrichers ? $metadataEnrichers() : null |
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); |
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} |
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public function publish(EnvelopeInterface $envelope, MessageBusInterface $messageBus): void |
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{ |
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if ($subscription = $this->getSubscription()) { |
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$subscription->publish($envelope, $messageBus); |
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} |
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} |
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public function receive(EnvelopeInterface $envelope): void |
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{ |
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if ($subscription = $this->getSubscription()) { |
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$subscription->receive($envelope); |
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} |
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} |
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public function getKey(): string |
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{ |
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return $this->key; |
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} |
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private function getSubscription(): SubscriptionInterface |
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{ |
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/** @psalm-suppress RedundantPropertyInitializationCheck */ |
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if (!isset($this->compositeSubscription)) { |
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$this->compositeSubscription = ($this->factoryCallback)(); |
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unset($this->factoryCallback); |
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} |
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return $this->compositeSubscription; |
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} |
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} |
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daikon-cqrs /
message-bus
