text: """
  Component for interacting with a Lutron RadioRA 2 system.
  
  For more details about this component, please refer to the documentation at
  https://home-assistant.io/components/lutron/
  """
  import asyncio
  import logging
  
  from homeassistant.helpers import discovery
  from homeassistant.helpers.entity import Entity
  
  REQUIREMENTS = ['https://github.com/thecynic/pylutron/archive/v0.1.0.zip#'
                  'pylutron==0.1.0']
  
  DOMAIN = 'lutron'
  
  _LOGGER = logging.getLogger(__name__)
  
  LUTRON_CONTROLLER = 'lutron_controller'
  LUTRON_DEVICES = 'lutron_devices'
  
  
  def setup(hass, base_config):
      """Setup the Lutron component."""
      from pylutron import Lutron
  
      hass.data[LUTRON_CONTROLLER] = None
      hass.data[LUTRON_DEVICES] = {'light': []}
  
      config = base_config.get(DOMAIN)
      hass.data[LUTRON_CONTROLLER] = Lutron(
          config['lutron_host'],
          config['lutron_user'],
          config['lutron_password']
      )
      hass.data[LUTRON_CONTROLLER].load_xml_db()
      hass.data[LUTRON_CONTROLLER].connect()
      _LOGGER.info("Connected to Main Repeater at %s", config['lutron_host'])
  
      # Sort our devices into types
      for area in hass.data[LUTRON_CONTROLLER].areas:
          for output in area.outputs:
              hass.data[LUTRON_DEVICES]['light'].append((area.name, output))
  
      for component in ('light',):
          discovery.load_platform(hass, component, DOMAIN, None, base_config)
      return True
  
  
  class LutronDevice(Entity):
      """Representation of a Lutron device entity."""
  
      def __init__(self, area_name, lutron_device, controller):
          """Initialize the device."""
          self._lutron_device = lutron_device
          self._controller = controller
          self._area_name = area_name
  
      @asyncio.coroutine
      def async_added_to_hass(self):
          """Register callbacks."""
          self.hass.async_add_job(
              self._controller.subscribe, self._lutron_device,
              self._update_callback
          )
  
      def _update_callback(self, _device):
          """Callback invoked by pylutron when the device state changes."""
          self.schedule_update_ha_state()
  
      @property
      def name(self):
          """Return the name of the device."""
          return "{} {}".format(self._area_name, self._lutron_device.name)
  
      @property
      def should_poll(self):
          """No polling needed."""
          return False
  