Class: CapistranoUnicorn::CapistranoIntegration

Inherits:
Object
  • Object
show all
Defined in:
lib/capistrano-unicorn/capistrano_integration.rb

Constant Summary collapse

TASKS =
[
  'unicorn:start',
  'unicorn:stop',
  'unicorn:restart',
  'unicorn:duplicate',
  'unicorn:reload',
  'unicorn:shutdown',
  'unicorn:add_worker',
  'unicorn:remove_worker',
  'unicorn:show_vars',
]

Class Method Summary collapse

Class Method Details

.load_into(capistrano_config) ⇒ Object



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# File 'lib/capistrano-unicorn/capistrano_integration.rb', line 23

def self.load_into(capistrano_config)
  capistrano_config.load do

    before(CapistranoIntegration::TASKS) do
      Config.load(self)
    end

    extend Utility

    #
    # Unicorn cap tasks
    #
    namespace :unicorn do
      desc 'Debug Unicorn variables'
      task :show_vars, :roles => :app do
        puts <<-EOF.gsub(/^ +/, '')

          # Environments
          rails_env          "#{rails_env}"
          unicorn_env        "#{unicorn_env}"
          unicorn_rack_env   "#{unicorn_rack_env}"

          # Execution
          unicorn_user       #{unicorn_user.inspect}
          unicorn_bundle     "#{unicorn_bundle}"
          unicorn_bin        "#{unicorn_bin}"
          unicorn_options    "#{unicorn_options}"
          unicorn_restart_sleep_time  #{unicorn_restart_sleep_time}

          # Relative paths
          app_subdir                         "#{app_subdir}"
          unicorn_config_rel_path            "#{unicorn_config_rel_path}"
          unicorn_config_filename            "#{unicorn_config_filename}"
          unicorn_config_rel_file_path       "#{unicorn_config_rel_file_path}"
          unicorn_config_stage_rel_file_path "#{unicorn_config_stage_rel_file_path}"

          # Absolute paths
          app_path                  "#{app_path}"
          unicorn_pid               "#{unicorn_pid}"
          bundle_gemfile            "#{bundle_gemfile}"
          unicorn_config_path       "#{unicorn_config_path}"
          unicorn_config_file_path  "#{unicorn_config_file_path}"
          unicorn_config_stage_file_path
          ->                        "#{unicorn_config_stage_file_path}"
        EOF
      end

      desc 'Start Unicorn master process'
      task :start, :roles => unicorn_roles, :except => {:no_release => true} do
        run start_unicorn
      end

      desc 'Stop Unicorn'
      task :stop, :roles => unicorn_roles, :except => {:no_release => true} do
        run kill_unicorn('QUIT')
      end

      desc 'Immediately shutdown Unicorn'
      task :shutdown, :roles => unicorn_roles, :except => {:no_release => true} do
        run kill_unicorn('TERM')
      end

      desc 'Restart Unicorn'
      task :restart, :roles => unicorn_roles, :except => {:no_release => true} do
        run <<-END
          #{duplicate_unicorn}

          sleep #{unicorn_restart_sleep_time}; # in order to wait for the (old) pidfile to show up

          if #{old_unicorn_is_running?}; then
            #{unicorn_send_signal('QUIT', get_old_unicorn_pid)};
          fi;
        END
      end

      desc 'Duplicate Unicorn'
      task :duplicate, :roles => unicorn_roles, :except => {:no_release => true} do
        run duplicate_unicorn()
      end

      desc 'Reload Unicorn'
      task :reload, :roles => unicorn_roles, :except => {:no_release => true} do
        run <<-END
          if #{unicorn_is_running?}; then
            echo "Reloading Unicorn...";
            #{unicorn_send_signal('HUP')};
          else
            #{start_unicorn}
          fi;
        END
      end

      desc 'Add a new worker'
      task :add_worker, :roles => unicorn_roles, :except => {:no_release => true} do
        run <<-END
          if #{unicorn_is_running?}; then
            echo "Adding a new Unicorn worker...";
            #{unicorn_send_signal('TTIN')};
          else
            echo "Unicorn is not running.";
          fi;
        END
      end

      desc 'Remove amount of workers'
      task :remove_worker, :roles => unicorn_roles, :except => {:no_release => true} do
        run <<-END
          if #{unicorn_is_running?}; then
            echo "Removing a Unicorn worker...";
            #{unicorn_send_signal('TTOU')};
          else
            echo "Unicorn is not running.";
          fi;
        END
      end
    end
  end
end