在Symfony2中异步调用命令 [英] Asynchronously calling a Command in Symfony2

问题描述

我想从Symfony2中的控制器中异步调用命令.

I want to asynchronously call a Command from within a Controller in Symfony2.

到目前为止，我找到了以下解决方案:

So far i found the following solution:

$cmd = $this->get('kernel')->getRootDir().'/console '.(new MLCJobWorkerCommand)->getName().' '.$job->getId().' 2>&1 > /dev/null';
$process = new Process($cmd);
$process->start();

是否有更好的方法来实现这一目标?

Is there a better way to accomplish this?

我需要Process在后台运行，并且Controller在启动前一个后立即返回.我试过了:

I need the Process to run in background and the Controller to return right after it started the former. I tried:

$cmd = $this->get('kernel')->getRootDir().'/console '
     .(new MLCJobWorkerCommand)->getName()
     .' '.$job->getId().' 2>&1 > /dev/null & echo \$!';
$process = new Process($cmd);
$process->mustRun();
$params["processid"] = $process->getOutput();

但是在过程完成之前，控制器不会返回响应.

but the Controller doesn't return a Response until the Process has finished.

推荐答案

我同意格里(Gerry)的观点，即如果您希望异步"，那么您选择的不是最佳方法

I agree with Gerry that if you want to be "asynchronously" then you selected not the best way

我可以推荐RabbitMQ的替代方案:JMSJobBundle
http://jmsyst.com/bundles/JMSJobQueueBundle/master/installation

I can recommend an alternative of RabbitMQ: JMSJobBundle
http://jmsyst.com/bundles/JMSJobQueueBundle/master/installation

您可以在其中创建控制台命令队列的地方，例如:

Where you can create a queue of you console commands something like:

class HomeController ... {
    // inject service here
    private $cronJobHelper;
    // inject EM here
    private $em;

    public function indexAction() {
        $job = $this->cronJobHelper->createConsoleJob('myapp:my-command-name', $event->getId(), 10);
        $this->em->persist($job);
        $this->em->persist($job);
        $this->em->flush();
    }
}


use JMS\JobQueueBundle\Entity\Job;

class CronJobHelper{

    public function createConsoleJob($consoleFunction, $params, $delayToRunInSeconds, $priority = Job::PRIORITY_DEFAULT, $queue = Job::DEFAULT_QUEUE){
        if(!is_array($params)){
            $params = [$params];
        }

        $job = new Job($consoleFunction, $params, 1, $queue, $priority);
        $date = $job->getExecuteAfter();
        $date = new \DateTime('now');
        $date->setTimezone(new \DateTimeZone('UTC')); //just in case
        $date->add(new \DateInterval('PT'.$delayToRunInSeconds.'S')); 
        $job->setExecuteAfter($date);

        return $job;
    }
}

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