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<?php |
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namespace Cmp\Queues\Infrastructure\AmqpLib\v26\RabbitMQ\Queue; |
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use Cmp\Queues\Domain\Queue\Exception\ReaderException; |
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use Cmp\Queues\Domain\Queue\Exception\TimeoutReaderException; |
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use Cmp\Queues\Domain\Queue\QueueReader as DomainQueueReader; |
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use Cmp\Queues\Infrastructure\AmqpLib\v26\RabbitMQ\Queue\Config\BindConfig; |
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use Cmp\Queues\Infrastructure\AmqpLib\v26\RabbitMQ\Queue\Config\ConsumeConfig; |
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use Cmp\Queues\Infrastructure\AmqpLib\v26\RabbitMQ\Queue\Config\ExchangeConfig; |
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use Cmp\Queues\Infrastructure\AmqpLib\v26\RabbitMQ\Queue\Config\QueueConfig; |
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use PhpAmqpLib\Channel\AMQPChannel; |
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use PhpAmqpLib\Connection\AMQPLazyConnection; |
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use PhpAmqpLib\Exception\AMQPTimeoutException; |
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use Psr\Log\LoggerInterface; |
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class QueueReader implements DomainQueueReader |
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{ |
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/** |
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* @var AMQPLazyConnection |
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*/ |
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protected $connection; |
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/** |
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* @var QueueConfig |
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*/ |
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protected $queueConfig; |
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/** |
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* @var ExchangeConfig |
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*/ |
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protected $exchangeConfig; |
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/** |
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* @var BindConfig |
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*/ |
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protected $bindConfig; |
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/** |
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* @var ConsumeConfig |
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*/ |
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protected $consumeConfig; |
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/** |
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* @var MessageHandler |
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*/ |
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protected $messageHandler; |
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/** |
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* @var LoggerInterface |
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*/ |
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protected $logger; |
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/** |
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* @var AMQPChannel |
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*/ |
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protected $channel; |
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/** |
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* QueueReader constructor. |
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* @param AMQPLazyConnection $connection |
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* @param QueueConfig $queueConfig |
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* @param ExchangeConfig $exchangeConfig |
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* @param BindConfig $bindConfig |
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* @param ConsumeConfig $consumeConfig |
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* @param MessageHandler $messageHandler |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct( |
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AMQPLazyConnection $connection, |
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QueueConfig $queueConfig, |
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ExchangeConfig $exchangeConfig, |
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BindConfig $bindConfig, |
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ConsumeConfig $consumeConfig, |
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MessageHandler $messageHandler, |
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LoggerInterface $logger |
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) |
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{ |
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$this->connection = $connection; |
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$this->queueConfig = $queueConfig; |
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$this->exchangeConfig = $exchangeConfig; |
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$this->bindConfig = $bindConfig; |
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$this->consumeConfig = $consumeConfig; |
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$this->logger = $logger; |
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$this->messageHandler = $messageHandler; |
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} |
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/** |
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* @param callable $callback |
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* @param int $timeout |
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* @throws ReaderException |
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* @throws TimeoutReaderException |
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*/ |
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public function read(callable $callback, $timeout=0) |
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{ |
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$this->initialize(); |
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$this->messageHandler->setCallback($callback); |
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try { |
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$this->consume($timeout); |
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} catch(AMQPTimeoutException $e) { |
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throw new TimeoutReaderException("Timed out at $timeout seconds while reading.", 0, $e); |
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} catch(\Exception $e) { |
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throw new ReaderException("Error occurred while reading", 0, $e); |
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} finally { |
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$this->channel->basic_cancel(''); |
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} |
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} |
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/** |
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* Deletes all messages from the queue |
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* @return void |
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*/ |
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public function purge() |
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{ |
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$this->initialize(); |
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$this->channel->queue_purge($this->queueConfig->getName()); |
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} |
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/** |
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* Creates the exchange |
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*/ |
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protected function exchangeDeclare() |
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{ |
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$this->logger->debug('Declaring exchange'); |
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$this->channel->exchange_declare( |
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$this->exchangeConfig->getName(), |
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$this->exchangeConfig->getType(), |
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$this->exchangeConfig->getPassive(), |
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$this->exchangeConfig->getDurable(), |
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$this->exchangeConfig->getAutoDelete() |
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); |
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} |
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/** |
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* Creates the queues and binds them to the exchanges and topics |
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*/ |
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protected function queueDeclareAndBind() |
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{ |
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$this->logger->debug('Declaring queue'); |
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$this->channel->queue_declare( |
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$this->queueConfig->getName(), |
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$this->queueConfig->getPassive(), |
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$this->queueConfig->getDurable(), |
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$this->queueConfig->getExclusive(), |
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$this->queueConfig->getAutoDelete() |
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); |
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$this->channel->queue_bind($this->queueConfig->getName(), $this->exchangeConfig->getName()); |
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foreach ($this->bindConfig->getTopics() as $bindTopic) { |
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$this->logger->info('Binding Topic:' . $bindTopic); |
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$this->channel->queue_bind($this->queueConfig->getName(), $this->exchangeConfig->getName(), $bindTopic); |
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} |
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} |
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/** |
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* Starts consuming from the queue |
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* @param int $timeout |
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*/ |
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protected function consume($timeout) |
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{ |
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$this->logger->debug('Waiting for messages on queue:' . $this->queueConfig->getName()); |
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$this->channel->basic_consume( |
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$this->queueConfig->getName(), |
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'', |
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$this->consumeConfig->getNoLocal(), |
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$this->consumeConfig->getNoAck(), |
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$this->consumeConfig->getExclusive(), |
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$this->consumeConfig->getNoWait(), |
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array($this->messageHandler, 'handleMessage') |
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); |
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$this->channel->wait(null, false, $timeout); |
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} |
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/** |
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* @throws ReaderException |
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*/ |
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protected function initialize() |
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{ |
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if ($this->channel) { |
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return; |
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} |
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$this->logger->debug('Connecting to RabbitMQ'); |
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try { |
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$this->channel = $this->connection->channel(); |
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$this->exchangeDeclare(); |
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$this->queueDeclareAndBind(); |
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} catch (\ErrorException $exception) { |
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$this->logger->error('Error trying to connect to rabbitMQ:' . $exception->getMessage()); |
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throw new ReaderException("Error initializing queue reader", 0, $exception); |
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} |
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} |
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/** |
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* Destructor |
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*/ |
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public function __destruct() |
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{ |
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if (isset($this->channel)) { |
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$this->channel->close(); |
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} |
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} |
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} |
CMProductions /
queues
