OpenShift Resque Cartridge

Runs Resque on OpenShift using downloadable cartridge support.

First of all Redis cartridge must be installed.

If it is then we can proceed to installation of Resque cartridge, run this command in terminal

rhc add-cartridge http://cartreflect-claytondev.rhcloud.com/reflect?github=pbrazdil/openshift-resque-cartridge --app YOUR_APPLICATION_NAME

Any log output will be generated to $OPENSHIFT_RESQUE_DIR/logs/resque.log

To check if it is all as we expected, lets see if Resque worker is running.

rhc cartridge status resque -a YOUR_APPLICATION_NAME

How it works

Every Resque job class must be listed in your code in resque/ directory.

For example resque/example_job.rb may look like this

class ExampleJob
    def self.queue
        :main
    end

    def self.perform(useless_param)
        sleep 10   #really hard task to process
    end
end

Then if you want to add a new job, just call Resque.enqueue

Resque.enqueue(ExampleJob, "some-cool-parameter")

In order to run it properly, Resque.redis must be pointed out to Redis running in your application. For example if you are running Rails, add a new file config/initializers/resque_init.rb with content below.

Resque.redis = Redis.new(:host => ENV['OPENSHIFT_REDIS_HOST'], :port => ENV['OPENSHIFT_REDIS_PORT'], :password => ENV['REDIS_PASSWORD'], :thread_safe => true)

Example Rails app

I made an simple Rails application which demonstrate how Resque cartridge can be used.