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<?php |
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namespace Saxulum\MessageQueue\RabbitMQ; |
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use PhpAmqpLib\Connection\AMQPStreamConnection; |
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use PhpAmqpLib\Message\AMQPMessage; |
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use Saxulum\MessageQueue\AbstractMessageReceive; |
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use Saxulum\MessageQueue\MessageInterface; |
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use Saxulum\MessageQueue\MessageReceiveException; |
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final class RabbitMQReceive extends AbstractMessageReceive |
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{ |
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/** |
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* @var string |
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*/ |
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private $messageClass; |
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/** |
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* @var AMQPStreamConnection |
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*/ |
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private $connection; |
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/** |
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* @var string |
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*/ |
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private $queue; |
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/** |
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* @param string $messageClass |
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* @param AMQPStreamConnection $connection |
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* @param string $queue |
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*/ |
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public function __construct(string $messageClass, AMQPStreamConnection $connection, string $queue) |
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{ |
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$this->messageClass = $messageClass; |
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$this->connection = $connection; |
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$this->queue = $queue; |
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} |
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/** |
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* @return MessageInterface|null |
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* |
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* @throws MessageReceiveException |
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*/ |
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public function receive() |
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{ |
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try { |
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$channel = $this->connection->channel(); |
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$channel->queue_declare($this->queue, false, false, false, false); |
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/** @var AMQPMessage $rabbitMQMessage */ |
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if (null === $rabbitMQMessage = $channel->basic_get($this->queue, true)) { |
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return null; |
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} |
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/** @var MessageInterface $messageClass */ |
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$messageClass = $this->messageClass; |
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return $messageClass::fromJson($rabbitMQMessage->body); |
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} catch (\Exception $e) { |
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throw new MessageReceiveException( |
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MessageReceiveException::MESSAGE_RECEIVE_FAILED.'('.$e->getMessage().')', |
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MessageReceiveException::CODE_RECEIVE_FAILED, |
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$e |
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); |
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} |
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} |
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} |
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saxulum /
saxulum-message-queue
