151 lines
4.5 KiB
PHP
151 lines
4.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\Messenger\Bridge\Amqp\Transport;
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use Symfony\Component\Messenger\Envelope;
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use Symfony\Component\Messenger\Exception\LogicException;
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use Symfony\Component\Messenger\Exception\MessageDecodingFailedException;
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use Symfony\Component\Messenger\Exception\TransportException;
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use Symfony\Component\Messenger\Transport\Receiver\MessageCountAwareInterface;
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use Symfony\Component\Messenger\Transport\Receiver\QueueReceiverInterface;
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use Symfony\Component\Messenger\Transport\Serialization\PhpSerializer;
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use Symfony\Component\Messenger\Transport\Serialization\SerializerInterface;
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/**
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* Symfony Messenger receiver to get messages from AMQP brokers using PHP's AMQP extension.
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*
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* @author Samuel Roze <samuel.roze@gmail.com>
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*/
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class AmqpReceiver implements QueueReceiverInterface, MessageCountAwareInterface
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{
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private $serializer;
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private $connection;
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public function __construct(Connection $connection, SerializerInterface $serializer = null)
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{
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$this->connection = $connection;
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$this->serializer = $serializer ?? new PhpSerializer();
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}
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/**
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* {@inheritdoc}
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*/
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public function get(): iterable
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{
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yield from $this->getFromQueues($this->connection->getQueueNames());
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}
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/**
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* {@inheritdoc}
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*/
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public function getFromQueues(array $queueNames): iterable
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{
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foreach ($queueNames as $queueName) {
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yield from $this->getEnvelope($queueName);
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}
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}
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private function getEnvelope(string $queueName): iterable
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{
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try {
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$amqpEnvelope = $this->connection->get($queueName);
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} catch (\AMQPException $exception) {
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throw new TransportException($exception->getMessage(), 0, $exception);
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}
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if (null === $amqpEnvelope) {
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return;
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}
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$body = $amqpEnvelope->getBody();
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try {
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$envelope = $this->serializer->decode([
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'body' => false === $body ? '' : $body, // workaround https://github.com/pdezwart/php-amqp/issues/351
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'headers' => $amqpEnvelope->getHeaders(),
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]);
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} catch (MessageDecodingFailedException $exception) {
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// invalid message of some type
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$this->rejectAmqpEnvelope($amqpEnvelope, $queueName);
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throw $exception;
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}
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yield $envelope->with(new AmqpReceivedStamp($amqpEnvelope, $queueName));
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}
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/**
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* {@inheritdoc}
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*/
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public function ack(Envelope $envelope): void
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{
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try {
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$stamp = $this->findAmqpStamp($envelope);
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$this->connection->ack(
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$stamp->getAmqpEnvelope(),
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$stamp->getQueueName()
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);
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} catch (\AMQPException $exception) {
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throw new TransportException($exception->getMessage(), 0, $exception);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function reject(Envelope $envelope): void
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{
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$stamp = $this->findAmqpStamp($envelope);
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$this->rejectAmqpEnvelope(
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$stamp->getAmqpEnvelope(),
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$stamp->getQueueName()
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function getMessageCount(): int
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{
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try {
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return $this->connection->countMessagesInQueues();
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} catch (\AMQPException $exception) {
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throw new TransportException($exception->getMessage(), 0, $exception);
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}
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}
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private function rejectAmqpEnvelope(\AMQPEnvelope $amqpEnvelope, string $queueName): void
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{
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try {
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$this->connection->nack($amqpEnvelope, $queueName, \AMQP_NOPARAM);
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} catch (\AMQPException $exception) {
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throw new TransportException($exception->getMessage(), 0, $exception);
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}
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}
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private function findAmqpStamp(Envelope $envelope): AmqpReceivedStamp
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{
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$amqpReceivedStamp = $envelope->last(AmqpReceivedStamp::class);
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if (null === $amqpReceivedStamp) {
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throw new LogicException('No "AmqpReceivedStamp" stamp found on the Envelope.');
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}
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return $amqpReceivedStamp;
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}
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}
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if (!class_exists(\Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceiver::class, false)) {
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class_alias(AmqpReceiver::class, \Symfony\Component\Messenger\Transport\AmqpExt\AmqpReceiver::class);
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}
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