deploy.rb

set :application, 'myapp'
set :repo_url, 'git@github.com:blackxored/myapp'
set :rails_env, 'production'
set :rbenv_type, :system
set :rbenv_ruby, "2.0.0-p247"
set :deploy_to, '/data/apps/myapp'
set :deploy_via, :remote_cache

set :user, 'deploy'
set :password, nil
set :group, "deploy"

set :unicorn_binary, "#{shared_path}/bin/unicorn"
set :unicorn_config, "#{current_path}/config/unicorn.rb"
set :unicorn_pid,    "#{shared_path}/tmp/pids/unicorn.pid"

set :bundle_flags, "--deployment --quiet"
set :flowdock_project_name, "MyApp"
set :flowdock_deploy_tags, ENV['DEPLOY_TAGS'].to_s.split(",")
set :flowdock_api_token, "MY_TOKEN"

if ENV['BRANCH']
  set :branch, ENV['BRANCH']
else
  ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }
end

set :format, :pretty
set :log_level, :info

set :linked_files, %w{config/mongoid.yml config/application.yml}
set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system public/uploads}

set :keep_releases, 5

no_release = ->(h) { h.properties.no_release }

namespace :deploy do
  desc "Start application"
  task :start do
    on roles(:app), reject: no_release do
      execute "cd #{current_path} && /usr/local/rbenv/shims/ruby #{fetch(:unicorn_binary)} -c #{fetch(:unicorn_config)} -E #{fetch(:rails_env, "production")} -D"
    end
  end

  desc "Stop application"
  task :stop do
    on roles(:app), reject: no_release do
      execute "kill `cat #{fetch(:unicorn_pid)}`"
    end
  end

  desc "Gracefully stop application"
  task :graceful_stop do
    on roles(:app), reject: no_release do
      execute "kill -s QUIT `cat #{fetch(:unicorn_pid)}`"
    end
  end

  desc "Reload the application"
  task :reload do
    on roles(:app), reject: no_release do
      execute "kill -s USR2 `cat #{fetch(:unicorn_pid)}`"
    end
  end

  desc 'Restart application'
  task :restart do
    invoke 'deploy:stop'
    invoke 'deploy:start'
  end

  after :restart, :clear_cache do
    on roles(:web), in: :groups, limit: 3, wait: 10 do
      # Here we can do anything such as:
      # within release_path do
      #   execute :rake, 'cache:clear'
      # end
    end
  end

  after :finishing, 'deploy:cleanup'
end