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<?php
namespace SimpleQueue\Adapter;
use Aws\Sqs\SqsClient;
use SimpleQueue\Job;
use SimpleQueue\QueueAdapterInterface;
use DateTime;
/**
* Class AwsSqsQueueAdapter
*
* @package SimpleQueue\Adapter
* @author George Webb <george@webb.uno>
*/
class AwsSqsQueueAdapter implements QueueAdapterInterface
{
/**
* @var string
*/
private $queueName;
/**
* @var SqsClient
*/
private $sqsClient;
/**
* @var string
*/
private $sqsUrl;
/**
* @var array
*/
private $config;
/**
* AwsSqsQueueAdapter constructor.
*
* @param string $queueName The name of the SQS queue
* @param SqsClient $sqsClient An SQS client
* @param array $config Array of config values
*/
public function __construct($queueName, SqsClient $sqsClient, $config = array())
{
$this->queueName = $queueName;
$this->sqsClient = $sqsClient;
$this->sqsUrl = $this->sqsClient->getQueueUrl(array('QueueName' => $this->queueName))->get('QueueUrl');
$this->config = $config;
}
/**
* Send a job
*
* @access public
* @param Job $job
* @return $this
*/
public function push(Job $job)
{
$this->sqsClient->sendMessage(array(
'QueueUrl' => $this->sqsUrl,
'MessageBody' => $job->serialize()
));
return $this;
}
/**
* Schedule a job in the future
*
* @access public
* @param Job $job
* @param DateTime $dateTime
* @return $this
*/
public function schedule(Job $job, DateTime $dateTime)
{
$now = new DateTime();
$when = clone($dateTime);
$delay = $when->getTimestamp() - $now->getTimestamp();
$this->sqsClient->sendMessage(array(
'QueueUrl' => $this->sqsUrl,
'MessageBody' => $job->serialize(),
'VisibilityTimeout' => $delay
));
return $this;
}
/**
* Wait and get job from a queue
*
* @access public
* @return Job|null
*/
public function pull()
{
$result = $this->sqsClient->receiveMessage(array(
'QueueUrl' => $this->sqsUrl,
'WaitTimeSeconds' => empty($this->config['LongPollingTime']) ? 0 : (int) $this->config['LongPollingTime']
));
if ($result['Messages'] == null) {
return null;
}
$resultMessage = array_pop($result['Messages']);
$job = new Job();
$job->setId($resultMessage['ReceiptHandle']);
$job->unserialize($resultMessage['Body']);
return $job;
}
/**
* Acknowledge a job
*
* @access public
* @param Job $job
* @return $this
*/
public function completed(Job $job)
{
$this->sqsClient->deleteMessage(array(
'QueueUrl' => $this->sqsUrl,
'ReceiptHandle' => $job->getId()
));
return $this;
}
/**
* Mark a job as failed
*
* @access public
* @param Job $job
* @return $this
*/
public function failed(Job $job)
{
$this->sqsClient->changeMessageVisibility(array(
'QueueUrl' => $this->sqsUrl,
'ReceiptHandle' => $job->getId(),
'VisibilityTimeout' => 0
));
return $this;
}
}
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