Add configuration check and use default var names (#7963)

homeassistant/components/light/lutron.py

@@ -11,14 +11,14 @@
 from homeassistant.components.lutron import (
     LutronDevice, LUTRON_DEVICES, LUTRON_CONTROLLER)
 
-DEPENDENCIES = ['lutron']
-
 _LOGGER = logging.getLogger(__name__)
 
+DEPENDENCIES = ['lutron']
+
 
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices, discovery_info=None):
-    """Set up Lutron lights."""
+    """Set up the Lutron lights."""
     devs = []
     for (area_name, device) in hass.data[LUTRON_DEVICES]['light']:
         dev = LutronLight(area_name, device, hass.data[LUTRON_CONTROLLER])

homeassistant/components/lutron.py

@@ -7,6 +7,10 @@
 import asyncio
 import logging
 
+import voluptuous as vol
+
+import homeassistant.helpers.config_validation as cv
+from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
 from homeassistant.helpers import discovery
 from homeassistant.helpers.entity import Entity
 
@@ -19,6 +23,14 @@
 LUTRON_CONTROLLER = 'lutron_controller'
 LUTRON_DEVICES = 'lutron_devices'
 
+CONFIG_SCHEMA = vol.Schema({
+    DOMAIN: vol.Schema({
+        vol.Required(CONF_HOST): cv.string,
+        vol.Required(CONF_PASSWORD): cv.string,
+        vol.Required(CONF_USERNAME): cv.string,
+    })
+}, extra=vol.ALLOW_EXTRA)
+
 
 def setup(hass, base_config):
     """Set up the Lutron component."""
@@ -29,13 +41,11 @@ def setup(hass, base_config):
 
     config = base_config.get(DOMAIN)
     hass.data[LUTRON_CONTROLLER] = Lutron(
-        config['lutron_host'],
-        config['lutron_user'],
-        config['lutron_password']
-    )
+        config[CONF_HOST], config[CONF_USERNAME], config[CONF_USERNAME])
+
     hass.data[LUTRON_CONTROLLER].load_xml_db()
     hass.data[LUTRON_CONTROLLER].connect()
-    _LOGGER.info("Connected to Main Repeater at %s", config['lutron_host'])
+    _LOGGER.info("Connected to main repeater at %s", config[CONF_HOST])
 
     # Sort our devices into types
     for area in hass.data[LUTRON_CONTROLLER].areas: