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<?php |
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namespace Happyr\Mq2phpBundle\Service; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LoggerInterface; |
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use SimpleBus\Asynchronous\Consumer\SerializedEnvelopeConsumer; |
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/** |
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* This class delegates a message to the CommandConsumer or EventConsumer depending on the queue name. |
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* |
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* @author Tobias Nyholm <[email protected]> |
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*/ |
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class ConsumerWrapper implements LoggerAwareInterface |
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{ |
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/** |
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* @var SerializedEnvelopeConsumer |
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*/ |
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private $commandConsumer; |
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/** |
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* @var SerializedEnvelopeConsumer |
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*/ |
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private $eventConsumer; |
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/** |
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* @var string |
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*/ |
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private $commandQueueName; |
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/** |
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* @var string |
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*/ |
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private $eventQueueName; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @param string $commandQueueName |
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* @param string $eventQueueName |
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* @param SerializedEnvelopeConsumer $commandConsumer |
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* @param SerializedEnvelopeConsumer $eventConsumer |
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*/ |
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public function __construct( |
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$commandQueueName, |
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$eventQueueName, |
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SerializedEnvelopeConsumer $commandConsumer = null, |
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SerializedEnvelopeConsumer $eventConsumer = null |
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) { |
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$this->commandConsumer = $commandConsumer; |
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$this->eventConsumer = $eventConsumer; |
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$this->commandQueueName = $commandQueueName; |
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$this->eventQueueName = $eventQueueName; |
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} |
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/** |
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* @param $queueName |
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* @param $message |
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*/ |
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public function consume($queueName, $message) |
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{ |
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$this->log('info', sprintf('Consuming data from queue: %s', $queueName)); |
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if ($queueName === $this->eventQueueName) { |
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$this->doConsume($queueName, $message, $this->eventConsumer); |
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$this->log('info', sprintf('Data from queue %s was consumed by the event consumer', $queueName)); |
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} elseif ($queueName === $this->commandQueueName) { |
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$this->doConsume($queueName, $message, $this->commandConsumer); |
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$this->log('info', sprintf('Data from queue %s was consumed by the command consumer', $queueName)); |
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} else { |
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$this->doConsume($queueName, $message); |
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} |
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} |
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/** |
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* @param LoggerInterface $logger |
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*/ |
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public function setLogger(LoggerInterface $logger) |
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{ |
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$this->logger = $logger; |
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} |
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/** |
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* @param string $level |
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* @param string $message |
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* @param array $context |
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*/ |
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private function log($level, $message, array $context = []) |
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{ |
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if ($this->logger) { |
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$this->logger->log($level, $message, $context); |
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} |
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} |
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/** |
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* Consume a message and make sure we log errors. |
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* |
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* @param string $queueName |
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* @param mixed $message |
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* @param SerializedEnvelopeConsumer $consumer |
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* |
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* @throws \Exception |
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*/ |
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private function doConsume($queueName, $message, SerializedEnvelopeConsumer $consumer = null) |
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{ |
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if ($consumer === null) { |
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$exceptionMessage = sprintf('No consumer was found for queue named "%s"', $queueName); |
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$this->log('alert', $exceptionMessage, ['message' => $message]); |
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throw new \RuntimeException($exceptionMessage); |
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} |
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try { |
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$consumer->consume($message); |
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} catch (\Exception $e) { |
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$this->log( |
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'error', |
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sprintf('Tried to handle message from queue %s but failed', $queueName), |
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[ |
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'exception' => $e, |
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'message' => $message, |
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] |
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); |
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throw $e; |
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} |
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} |
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} |
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