Intro to BCC Resque Bundle

The BCC resque bundle provides integration of php-resque to Symfony2. It is inspired from resque, a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.

Features:

• Creating a Job, with container access in order to leverage your Symfony services
• Enqueue a Job wih parameters on a given queue
• Creating background worker on a given queue
• A UX to monitor your queues, workers and job statuses
• ability to schedule jobs to run at a specific time or after a number of seconds delay

TODOs:

• Log management
• Job status tracking
• Redis configuration
• Localisation
• Tests

Screenshots

Dashboard

Installation and configuration:

Requirements

Make sure you have redis installed on your machine: http://redis.io/

Get the bundle

Add to your bcc-resque-bundle to your dependencies:

{
    "require": {
        ...
        "bcc/resque-bundle": "1.1"
    }
    ...
}

To install, run php composer.phar [update|install].

Add BCCResqueBundle to your application kernel

<?php

    // app/AppKernel.php
    public function registerBundles()
    {
        return array(
            // ...
            new BCC\ResqueBundle\BCCResqueBundle(),
            // ...
        );
    }

Import the routing configuration

Add to your routing.yml:

# app/config/routing.yml
BCCResqueBundle:
    resource: "@BCCResqueBundle/Resources/config/routing.xml"
    prefix:   /resque

You can customize the prefix as you wish.

You can now acces the dashboard at this url: /resque

Optional, set configuration

You may want to add some configuration to your config.yml

# app/config/config.yml
bcc_resque:
    class: BCC\ResqueBundle\Resque           # the resque class if different from default
    vendor_dir: %kernel.root_dir%/../vendor  # the vendor dir if different from default
    prefix: my-resque-prefix                 # optional prefix to separate Resque data per site/app
    redis:
        host: localhost                      # the redis host
        port: 6379                           # the redis port
        database: 1                          # the redis database

Creating a Job

A job is a subclass of the BCC\ResqueBundle\Job class. You also can use the BCC\Resque\ContainerAwareJob if you need to leverage the container during job execution. You will be forced to implement the run method that will contain your job logic:

<?php

namespace My;

use BCC\ResqueBundle\Job;

class MyJob extends Job
{
    public function run($args)
    {
        \file_put_contents($args['file'], $args['content']);
    }
}

As you can see you get an $args parameter that is the array of arguments of your Job.

Adding a job to a queue

You can get the resque service simply by using the container. From your controller you can do:

<?php

// get resque
$resque = $this->get('bcc_resque.resque');

// create your job
$job = new MyJob();
$job->args = array(
    'file'    => '/tmp/file',
    'content' => 'hello',
);

// enqueue your job
$resque->enqueue($job);

Running a worker on a queue

Executing the following commands will create a work on :

• the default queue : app/console bcc:resque:worker-start default
• the q1 and q2 queue : app/console bcc:resque:worker-start q1,q2 (separate name with ,)
• all existing queues : app/console bcc:resque:worker-start "*"

You can also run a worker foreground by adding the --foreground option;

By default VERBOSE environment variable is set when calling php-resque

• --verbose option sets VVERBOSE
• --quiet disables both so no debug output is thrown

See php-resque logging option : https://github.com/chrisboulton/php-resque#logging

Adding a delayed job to a queue

You can specify that a job is run at a specific time or after a specific delay (in seconds).

From your controller you can do:

<?php

// get resque
$resque = $this->get('bcc_resque.resque');

// create your job
$job = new MyJob();
$job->args = array(
    'file'    => '/tmp/file',
    'content' => 'hello',
);

// enqueue your job to run at a specific \DateTime or int unix timestamp
$resque->enqueueAt(\DateTime|int $at, $job);

// or

// enqueue your job to run after a number of seconds
$resque->enqueueIn($seconds, $job);

You must also run a scheduledworker, which is responsible for taking items out of the special delayed queue and putting them into the originally specified queue.

app/console bcc:resque:scheduledworker-start

Stop it later with app/console bcc:resque:scheduledworker-stop.

Note that when run in background mode it creates a PID file in 'cache//bcc_resque_scheduledworker.pid'. If you clear your cache while the scheduledworker is running you won't be able to stop it with the scheduledworker-stop command.

Alternatively, you can run the scheduledworker in the foreground with the --foreground option.

Note also you should only ever have one scheduledworker running, and if the PID file already exists you will have to use the --force option to start a scheduledworker.

Manage production workers with supervisord

It's probably best to use supervisord (http://supervisord.org) to run the workers in production, rather than re-invent job spawning, monitoring, stopping and restarting.

Here's a sample conf file

[program:myapp_phpresque_default]
command = /usr/bin/php /home/sites/myapp/prod/current/vendor/chrisboulton/php-resque/resque.php
user = myusername
environment = APP_INCLUDE='/home/sites/myapp/prod/current/vendor/autoload.php',VERBOSE='1',QUEUE='default'

[program:myapp_phpresque_scheduledworker]
command = /usr/bin/php /home/sites/myapp/prod/current/vendor/chrisboulton/php-resque-scheduler/resque-scheduler.php
user = myusername
environment = APP_INCLUDE='/home/sites/myapp/prod/current/vendor/autoload.php',VERBOSE='1',RESQUE_PHP='/home/sites/myapp/prod/current/vendor/chrisboulton/php-resque/lib/Resque.php'

[group:myapp]
programs=myapp_phpresque_default,myapp_phpresque_scheduledworker

(If you use a custom Resque prefix, add an extra environment variable: PREFIX='my-resque-prefix')

Then in Capifony you can do

sudo supervisorctl stop myapp:* before deploying your app and sudo supervisorctl start myapp:* afterwards.

More features

Changing the queue

You can change a job queue just by setting the queue field of the job:

From within the job:

<?php

namespace My;

use BCC\ResqueBundle\Job;

class MyJob extends Job
{
    public function __construct()
    {
        $this->queue = 'my_queue';
    }

    public function run($args)
    {
        ...
    }
}

Or from outside the job:

<?php

// create your job
$job = new MyJob();
$job->job = 'my_queue';

Access the container from inside your job

Just extend the ContainerAwareJob:

<?php

namespace My;

use BCC\ResqueBundle\ContainerAwareJob;

class MyJob extends ContainerAwareJob
{
    public function run($args)
    {
        $doctrine = $this->getContainer()->getDoctrine();
        ...
    }
}

Stop a worker

Use the app/console bcc:resque:worker-stop command.

• No argument will display running workers that you can stop.
• Add a worker id to stop it: app/console bcc:resque:worker-stop ubuntu:3949:default
• Add the --all option to stop all the workers.