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<?php declare(strict_types=1); |
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namespace Initx\Querabilis\Driver; |
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use Initx\Querabilis\Envelope; |
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use Initx\Querabilis\Exception\IllegalStateException; |
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use Initx\Querabilis\Queue; |
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use JMS\Serializer\SerializerInterface; |
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use PhpAmqpLib\Channel\AMQPChannel; |
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use PhpAmqpLib\Connection\AbstractConnection; |
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use PhpAmqpLib\Message\AMQPMessage; |
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final class AmqpQueue implements Queue |
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{ |
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use HasFallbackSerializer; |
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use HasDefaultRemoveAndElement; |
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/** |
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* @var SerializerInterface |
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*/ |
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private $serializer; |
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/** |
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* @var string |
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*/ |
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private $exchange; |
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/** |
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* @var AbstractConnection |
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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 $routingKey; |
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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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* @var AMQPChannel |
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*/ |
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private $channel; |
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public function __construct( |
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AbstractConnection $connection, |
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string $queue, |
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string $exchange = '', |
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string $routingKey = '', |
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?SerializerInterface $serializer = null |
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) { |
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$this->connection = $connection; |
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$this->channel = $connection->channel(); |
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$this->queue = $queue; |
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$this->exchange = $exchange; |
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$this->routingKey = $routingKey; |
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$this->serializer = $this->fallbackSerializer($serializer); |
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} |
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public function add(Envelope $envelope): bool |
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{ |
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if (!$this->offer($envelope)) { |
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throw new IllegalStateException("Could not write to AMQP"); |
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} |
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return true; |
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} |
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public function offer(Envelope $envelope): bool |
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{ |
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$serialized = $this->serializer->serialize($envelope, 'json'); |
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$message = new AMQPMessage($serialized); |
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$this->channel->basic_publish($message, $this->exchange, $this->routingKey); |
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return true; |
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} |
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public function poll(): ?Envelope |
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{ |
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$message = $this->channel->basic_get($this->queue, true); |
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if (!$message) { |
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return null; |
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} |
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return $this->serializer->deserialize($message->body, Envelope::class, 'json'); |
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} |
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public function peek(): ?Envelope |
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{ |
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$message = $this->channel->basic_get($this->queue); |
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if (!$message) { |
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return null; |
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} |
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$this->channel->basic_nack($message->get('delivery_tag'), false, true); |
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return $this->serializer->deserialize($message->body, Envelope::class, 'json'); |
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} |
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} |
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