Puma deploy task for mina.

mina_for_puma.rb

#                                                                           Puma
# ==============================================================================
namespace :puma do
  set :puma_pid, "#{app_path}/tmp/pids/puma.pid"
  set :start_puma, %{
    cd #{app_path}
    bundle exec puma --config #{app_path}/config/puma.rb --environment #{rails_env}
  }

#                                                                    Start task
# ------------------------------------------------------------------------------
  desc "Start Puma"
  task :start => :environment do
    queue 'echo "-----> Start Puma"'
    queue! start_puma
  end

#                                                                     Stop task
# ------------------------------------------------------------------------------
  desc "Stop Puma"
  task :stop do
    queue 'echo "-----> Stop Puma"'
    queue! %{
      test -s "#{puma_pid}" && kill -QUIT `cat "#{puma_pid}"` && echo "Stop Ok" && exit 0
      echo >&2 "Not running"
    }
  end

#                                                                  Restart task
# ------------------------------------------------------------------------------
  desc "Restart Puma using 'upgrade'"
  task :restart => :environment do
    invoke 'puma:stop'
    invoke 'puma:start'
  end
end