config/god/resque.god

gistfile1.rb

rails_env   = ENV['RAILS_ENV']
raise "Please specify RAILS_ENV." unless rails_env
rails_root  = ENV['RAILS_ROOT'] || File.expand_path(File.join(File.dirname(__FILE__), '..', '..'))

RESQUE_PROCESSORS = [
  [1, "foo,bar"],
  [2, "baz"],
  [3, "demo"]
]

RESQUE_PROCESSORS.each do |resque_id, resque_queues|
  God.watch do |w|
    w.dir      = "#{rails_root}"
    w.name     = "resque-#{resque_id}"
    w.group    = 'resque'
    w.interval = 30.seconds
    w.env      = {"QUEUES"=>resque_queues, "RAILS_ENV"=>rails_env, "BUNDLE_GEMFILE"=>"#{rails_root}/Gemfile"}
    w.start    = "bundle exec rake -f #{rails_root}/Rakefile environment resque:work"
    w.log      = "#{rails_root}/log/resque-#{resque_id}.log"

    # restart if memory gets too high
    w.transition(:up, :restart) do |on|
      on.condition(:memory_usage) do |c|
        c.above = 350.megabytes
        c.times = 2
      end
    end

    # determine the state on startup
    w.transition(:init, { true => :up, false => :start }) do |on|
      on.condition(:process_running) do |c|
        c.running = true
      end
    end

    # determine when process has finished starting
    w.transition([:start, :restart], :up) do |on|
      on.condition(:process_running) do |c|
        c.running = true
        c.interval = 5.seconds
      end

      # failsafe
      on.condition(:tries) do |c|
        c.times = 5
        c.transition = :start
        c.interval = 5.seconds
      end
    end

    # start if process is not running
    w.transition(:up, :start) do |on|
      on.condition(:process_running) do |c|
        c.running = false
      end
    end
  end
end