Question

I am using a Mac OS running Snow Leopard 10.6.8, Ruby on Rails 3.2.2 and the DelayedJob gem. I would like to run some “command lines”/”tasks” from an inizializer so to start delayed workers.

In order to do that in my config/initializers/delayed_job.rb file I am trying to state the following:

if Rails.env.development?
  system 'rake jobs:work'
elsif Rails.env.production?
  system 'RAILS_ENV=production script/delayed_job stop'
  system 'RAILS_ENV=production script/delayed_job -n 2 start'
end

However, the above code will start a lot of ruby processes and those rapidly slow my machine so I have to restart that. The remote machine run Linux Ubuntu 10.4.

How can I properly state that code so to run delayed workers?

In any case I think that, since on the local and remote machine are running two different Operating System, “command lines”/”tasks” should be different, as well…

Answer 1

Rather than using an initializer this should be done during deployment as your initializer is run for every instance of your app that is spawned.

Since you use capistrano I typically handle this like so:

in config/deploy.rb:

require 'delayed/recipes'

after 'deploy:symlink', 'delayed_job:restart'

Since your wanting to spawn 2 workers this could be done by setting the delayed_job_args:

require 'delayed/recipes'
set :delayed_job_args, "-n 2"
after 'deploy:symlink', 'delayed_job:restart'