我有一个使用kafka消息的php应用程序。问题是如何知道Kafka有新的信息？第一种解决方案是在php中创建consumer，然后在循环中运行它来检查新消息。像这样的

<?php

namespace MyAppBundle\Command;

use MyAppBundle\EventSourcing\EventSerializer\JSONEventSerializer;
use MyAppBundle\Service\EventProjectorService;
use MyAppBundle\Service\KafkaService;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\Exception\RuntimeException;

class EventCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this
            ->setName('events:fetch');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        /**@var KafkaService $kafkaService */
        $kafkaService = $this->getContainer()->get('store_locator.kafka_service');
        /**@var EventProjectorService $eventProjector */
        $eventProjector = $this->getContainer()->get('store_locator.event_projector');

        while(1){
          $messages = $kafkaService->fetchEvents();

          foreach ($messages as $message) {
              $eventProjector->aggregate($message);
          }
        }
        $output->writeln("Finish");
    }
}

但我不喜欢。。。还有别的办法吗？
如果没有更好的方法，如何让它继续运行？例如当某件事失败时。