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Queue.php
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Queue.php
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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\MysqlMq\Model\Driver;
use Magento\Framework\MessageQueue\EnvelopeInterface;
use Magento\Framework\MessageQueue\QueueInterface;
use Magento\MysqlMq\Model\QueueManagement;
use Magento\Framework\MessageQueue\EnvelopeFactory;
use Psr\Log\LoggerInterface;
/**
* Queue based on MessageQueue protocol
*/
class Queue implements QueueInterface
{
/**
* @var QueueManagement
*/
private $queueManagement;
/**
* @var EnvelopeFactory
*/
private $envelopeFactory;
/**
* @var string
*/
private $queueName;
/**
* @var int
*/
private $interval;
/**
* @var int
*/
private $maxNumberOfTrials;
/**
* @var LoggerInterface $logger
*/
private $logger;
/**
* Queue constructor.
*
* @param QueueManagement $queueManagement
* @param EnvelopeFactory $envelopeFactory
* @param LoggerInterface $logger
* @param string $queueName
* @param int $interval
* @param int $maxNumberOfTrials
*/
public function __construct(
QueueManagement $queueManagement,
EnvelopeFactory $envelopeFactory,
LoggerInterface $logger,
$queueName,
$interval = 5,
$maxNumberOfTrials = 3
) {
$this->queueManagement = $queueManagement;
$this->envelopeFactory = $envelopeFactory;
$this->queueName = $queueName;
$this->interval = $interval;
$this->maxNumberOfTrials = $maxNumberOfTrials;
$this->logger = $logger;
}
/**
* @inheritdoc
*/
public function dequeue()
{
$envelope = null;
$messages = $this->queueManagement->readMessages($this->queueName, 1);
if (isset($messages[0])) {
$properties = $messages[0];
$body = $properties[QueueManagement::MESSAGE_BODY];
unset($properties[QueueManagement::MESSAGE_BODY]);
$envelope = $this->envelopeFactory->create(['body' => $body, 'properties' => $properties]);
}
return $envelope;
}
/**
* @inheritdoc
*/
public function acknowledge(EnvelopeInterface $envelope)
{
$properties = $envelope->getProperties();
$relationId = $properties[QueueManagement::MESSAGE_QUEUE_RELATION_ID];
$this->queueManagement->changeStatus($relationId, QueueManagement::MESSAGE_STATUS_COMPLETE);
}
/**
* @inheritdoc
*/
public function subscribe($callback)
{
while (true) {
while ($envelope = $this->dequeue()) {
try {
// phpcs:ignore Magento2.Functions.DiscouragedFunction
call_user_func($callback, $envelope);
} catch (\Exception $e) {
$this->reject($envelope);
}
}
// phpcs:ignore Magento2.Functions.DiscouragedFunction
sleep($this->interval);
}
}
/**
* @inheritdoc
*/
public function reject(EnvelopeInterface $envelope, $requeue = true, $rejectionMessage = null)
{
$properties = $envelope->getProperties();
$relationId = $properties[QueueManagement::MESSAGE_QUEUE_RELATION_ID];
if ($properties[QueueManagement::MESSAGE_NUMBER_OF_TRIALS] < $this->maxNumberOfTrials && $requeue) {
$this->queueManagement->pushToQueueForRetry($relationId);
} else {
$this->queueManagement->changeStatus([$relationId], QueueManagement::MESSAGE_STATUS_ERROR);
if ($rejectionMessage !== null) {
$this->logger->critical(__('Message has been rejected: %1', $rejectionMessage));
}
}
}
/**
* @inheritDoc
*/
public function push(EnvelopeInterface $envelope)
{
$properties = $envelope->getProperties();
$this->queueManagement->addMessageToQueues(
$properties[QueueManagement::MESSAGE_TOPIC],
$envelope->getBody(),
[$this->queueName]
);
}
}