##General Queue component for yii2

Currently only supports beanstalkd driver but can easily be extended to support other types

##Installation

composer require djeux/yii2-queue

##Configuration In your config/main.php (because you need to setup the queue to work in both console and web)

'components' => [
    'queue' => [
        'class' => 'djeux\queue\BeanstalkdQueueManager', // in this example we use beanstalkd driver
        'host' => '127.0.0.1',
        'worker' => [
            'listen' => ['default', /* here you define what tubes should the worker listen to */]
        ],
    ],
]

##Usage In your code you can push jobs two ways

1. By passing an object which implements 'Queueable' interface

Yii::$app->queue->push(new MyJob("text to push"), '', 'default');

class MyJob implements Queueable
{   
    protected $pushedText;
    
    public function __construct($text)
    {
        $this->pushedText = $text;
    }
    
    /**
     * @param $job BaseJob
     */
    public function handle($job)
    {
        echo $this->pushedText;
        $job->delete();
    }
}

2. By passing a string with class and method separated by '@'

Yii::$app->queue->push('app\components\queue\MyJob@myMethod', 'text to push', 'default');

class MyJob
{   
    public function myMethod($job, $data)
    {
        echo $data;
        $job->delete();
    }
}

Workers

You can setup workers to run from supervisord

There are two main methods

php yii queue/manager

Runs a manager which checks the configured worker and launched a process for each listed queue

php yii queue/worker <queue>

Which runs a daemon that processes queue jobs

Troubleshooting

If you have jobs that use database connection, and they're running in daemon mode, the server will eventually disconnect you. @see wait_timeout

To counter that there's a trait in \djeux\queue\helpers\TimeoutTrait which you can call to keep the jobs processing and reconnect if the connection is dropped

Same goes for swiftmailer if you sending emails. The smtp will eventually disconnect you with

421 Timeout waiting for data from client.

To counter that you can use

try {
    \Yii::$app->mailer->send($message);
} catch (\Exception $e) {
    if (strpos(strtolower($e->getMessage()), '421 timeout') !== false) {
        if (($mailer = \Yii::$app->mailer) instanceof Mailer) {
            /* @var $mailer Mailer */
            $mailer->getSwiftMailer()->getTransport()->stop();
            $this->send($job, $data);
        }
    }
}

You can add methods like "beforeJob" and "afterJob" which will be called before and after a job is processed.

#P.S. Package inspiration taken from Laravel implementation of queue system.

For any suggestions, fixes and hate posts, please write issues.