Integrating Padrino w/ Mongoid & delayed_job on Heroku

app.rb

# app/app.rb

get :index do
  SimpleTask.new.doit
  "check heroku logs for job output"
end

boot.rb

# config/boot.rb

# For delayed_job
module Rails
  def self.root
    PADRINO_ROOT
  end
end

# other delayed_job configuration
Delayed::Worker.destroy_failed_jobs = false

create.rake

# tasks/create.rake

desc "One time task to setup on heroku"
task :create do
  sh "heroku create --stack cedar"
  sh "heroku addons:add mongohq:free"
  sh "git push heroku master"
  sh "heroku run bundle exec padrino rake seed"
  sh "heroku ps:scale web=1 job=1"
end

Gemfile

gem 'delayed_job'
gem 'delayed_job_mongoid'
gem 'thin'
gem 'heroku'

jobs.rake

# tasks/jobs.rake

task :environment do
  require File.expand_path(File.join(File.dirname(__FILE__), '..', 'config', 'boot.rb'))
end

namespace :jobs do
  desc "Clear the delayed_job queue."
  task :clear => :environment do
    Delayed::Job.delete_all
  end

  desc 'delayed_job worker process'
  task :work => :environment do
    Delayed::Worker.new(:min_priority => ENV['MIN_PRIORITY'], :max_priority => ENV['MAX_PRIORITY']).start
  end
end

Procfile

web: bundle exec thin start -p $PORT -e $RACK_ENV
job: bundle exec padrino rake jobs:work

seeds.rb

# db/seeds.rb

# load env
require File.expand_path(File.join(File.dirname(__FILE__), '..', 'config', 'boot.rb'))

# setup structure for delayed_job
Delayed::Backend::Mongoid::Job.create_indexes

simple_task.rb

# lib/simple_task.rb

class SimpleTask

  def doit
    puts "just did something simple!"
    $stdout.flush
  end
  handle_asynchronously :doit

end