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<?php |
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namespace Bernard\Driver; |
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use Aws\Sqs\Exception\SqsException; |
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use Aws\Sqs\SqsClient; |
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/** |
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* Implements a Driver for use with AWS SQS client API: |
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* @link http://docs.aws.amazon.com/aws-sdk-php/v3/api/api-sqs-2012-11-05.html |
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* |
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* @package Bernard |
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*/ |
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class SqsDriver extends AbstractPrefetchDriver |
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{ |
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protected $sqs; |
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protected $queueUrls; |
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/** |
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* @param SqsClient $sqs |
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* @param array $queueUrls |
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* @param int|null $prefetch |
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*/ |
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public function __construct(SqsClient $sqs, array $queueUrls = [], $prefetch = null) |
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{ |
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parent::__construct($prefetch); |
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$this->sqs = $sqs; |
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$this->queueUrls = $queueUrls; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function listQueues() |
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{ |
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$result = $this->sqs->listQueues(); |
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if (!$queueUrls = $result->get('QueueUrls')) { |
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return array_keys($this->queueUrls); |
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} |
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foreach ($queueUrls as $queueUrl) { |
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if (in_array($queueUrl, $this->queueUrls)) { |
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continue; |
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} |
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$queueName = current(array_reverse(explode('/', $queueUrl))); |
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$this->queueUrls[$queueName] = $queueUrl; |
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} |
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return array_keys($this->queueUrls); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function createQueue($queueName) |
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{ |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function countMessages($queueName) |
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{ |
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$queueUrl = $this->resolveUrl($queueName); |
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$result = $this->sqs->getQueueAttributes([ |
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'QueueUrl' => $queueUrl, |
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'AttributeNames' => ['ApproximateNumberOfMessages'], |
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]); |
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if (isset($result['Attributes']['ApproximateNumberOfMessages'])) { |
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return $result['Attributes']['ApproximateNumberOfMessages']; |
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} |
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return 0; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function pushMessage($queueName, $message) |
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{ |
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$queueUrl = $this->resolveUrl($queueName); |
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$this->sqs->sendMessage([ |
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'QueueUrl' => $queueUrl, |
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'MessageBody' => $message, |
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]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function popMessage($queueName, $duration = 5) |
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{ |
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if ($message = $this->cache->pop($queueName)) { |
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return $message; |
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} |
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$queueUrl = $this->resolveUrl($queueName); |
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$result = $this->sqs->receiveMessage([ |
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'QueueUrl' => $queueUrl, |
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'MaxNumberOfMessages' => $this->prefetch, |
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'WaitTimeSeconds' => $duration, |
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]); |
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if (!$result || !$messages = $result->get('Messages')) { |
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return [null, null]; |
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} |
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foreach ($messages as $message) { |
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$this->cache->push($queueName, [$message['Body'], $message['ReceiptHandle']]); |
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} |
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return $this->cache->pop($queueName); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function acknowledgeMessage($queueName, $receipt) |
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{ |
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$queueUrl = $this->resolveUrl($queueName); |
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$this->sqs->deleteMessage([ |
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'QueueUrl' => $queueUrl, |
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'ReceiptHandle' => $receipt, |
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]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function peekQueue($queueName, $index = 0, $limit = 20) |
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{ |
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return []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeQueue($queueName) |
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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 info() |
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{ |
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return [ |
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'prefetch' => $this->prefetch, |
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]; |
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} |
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/** |
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* AWS works with queue URLs rather than queue names. Returns either queue URL (if queue exists) for given name or null if not. |
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* |
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* @param string $queueName |
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* |
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* @return mixed |
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* |
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* @throws SqsException |
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*/ |
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protected function resolveUrl($queueName) |
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{ |
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if (isset($this->queueUrls[$queueName])) { |
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return $this->queueUrls[$queueName]; |
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} |
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$result = $this->sqs->getQueueUrl(['QueueName' => $queueName]); |
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if ($result && $queueUrl = $result->get('QueueUrl')) { |
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return $this->queueUrls[$queueName] = $queueUrl; |
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} |
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throw new \InvalidArgumentException('Queue "' . $queueName .'" cannot be resolved to an url.'); |
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} |
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} |
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bernardphp /
bernard
