Delayed JOb

Delayed_job (or DJ) encapsulates the common pattern of asynchronously executing longer tasks in the background.

This is a direct port of Delayed::Job.

Pre-Requisites

• Working installation of MongoDB

  http://www.mongodb.org/display/DOCS/Quickstart+Unix

• Working installation of Mongo PEAR extension

  apt-get install php5-dev php-pear

  pecl install mongo

  echo 'extension=mongo.so' > /etc/php5/apache2/conf.d/mongo.ini

  service apache2 restart

Installation

Check out the code to your library directory

cd libraries
git clone [email protected]:cgarvis/li3_delayed_job.git

Include the library in your /app/config/bootstrap/libraries.php

Libraries::add('li3_delayed_job');

Usage

Jobs are simple objects with a method called perform. Any object which responds to perform can be stuffed into the jobs collection. Job objects are serialized to yaml so that they can later be resurrected by the job runner.

Creating a job

See examples under ./tests.

Running the jobs

You can invoke li3 jobs work which will start working off jobs. You can cancel the task with CTRL-C

Keep in mind that each worker will check the database at least every 5 seconds.

Cleaning up

You can invoke li3 jobs clear to delete all jobs in the queue