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<?php |
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namespace BenTools\GuzzleQueueHandler; |
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use GuzzleHttp\Exception\RequestException; |
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use GuzzleHttp\Promise\Promise; |
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use function GuzzleHttp\Psr7\parse_response; |
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use function GuzzleHttp\Psr7\str; |
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use Interop\Queue\PsrConnectionFactory; |
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use Interop\Queue\PsrContext; |
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use Interop\Queue\PsrQueue; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\UriInterface; |
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class QueueHandler |
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{ |
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/** |
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* @var PsrContext |
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*/ |
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private $context; |
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/** |
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* @var PsrQueue |
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*/ |
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private $queue; |
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/** |
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* @var int |
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*/ |
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private $timeout; |
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/** |
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* EnqueuePromisor constructor. |
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* @param PsrContext $context |
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* @param string $queueName |
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* @param float $timeout |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct(PsrContext $context, $queueName = '', $timeout = 0.0) |
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{ |
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$this->context = $context; |
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if ('' === $queueName) { |
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throw new \InvalidArgumentException("Queue name must not be blank."); |
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} |
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$this->queue = $context->createQueue($queueName); |
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$this->timeout = (float) $timeout; |
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} |
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/** |
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* @param PsrConnectionFactory $factory |
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* @param string $queueName |
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* @param float $timeout |
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* @return QueueHandler |
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*/ |
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public static function factory(PsrConnectionFactory $factory, $queueName = '', $timeout = 0.0) |
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{ |
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$context = $factory->createContext(); |
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return new static($context, $queueName, $timeout); |
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} |
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/** |
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* @param RequestInterface $request |
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* @return Promise |
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* @throws \Interop\Queue\Exception |
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* @throws \Interop\Queue\InvalidDestinationException |
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* @throws \Interop\Queue\InvalidMessageException |
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* @throws \InvalidArgumentException |
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*/ |
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public function __invoke(RequestInterface $request, array $options) |
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{ |
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$message = $this->wrap($request, $options); |
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$replyTo = $this->queue->getQueueName() . strtr(uniqid(null, true), '.', 0); |
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$message->setReplyTo($replyTo); |
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$this->context->createProducer()->send($this->queue, $message); |
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$promise = new Promise(function () use (&$promise, $replyTo, $request) { |
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try { |
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$queue = $this->context->createQueue($replyTo); |
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$consumer = $this->context->createConsumer($queue); |
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if (0.0 === $this->timeout) { |
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while (null === ($message = $consumer->receive())) { |
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usleep(100); |
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} |
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} else { |
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$max = microtime(true) + $this->timeout; |
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while (null === ($message = $consumer->receive($this->timeout)) && microtime(true) <= $max) { |
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usleep(100); |
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} |
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} |
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if (null === $message) { |
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throw new RequestException('Timeout reached.', $request); |
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} |
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if (null !== $message->getProperty('error')) { |
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throw RequestException::create($request, null, new \RuntimeException($message->getProperty('error'))); |
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} |
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$consumer->acknowledge($message); |
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$response = parse_response($message->getBody()); |
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$promise->resolve($response); |
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} catch (\Exception $e) { |
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$promise->reject($e); |
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} |
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}); |
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return $promise; |
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} |
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/** |
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* @param RequestInterface $request |
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* @param array $options |
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* @return \Interop\Queue\PsrMessage |
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* @throws \InvalidArgumentException |
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*/ |
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private function wrap(RequestInterface $request, array $options) |
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{ |
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if (isset($options['base_uri']) && $options['base_uri'] instanceof UriInterface) { |
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$options['base_uri'] = (string) $options['base_uri']; |
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} |
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$message = $this->context->createMessage(json_encode([ |
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str($request->withRequestTarget((string) $request->getUri())), |
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$options, |
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])); |
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return $message; |
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} |
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} |
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This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.