Nanoleaf availability check (#21945)

* Added availability check for nanoleaf lights

* pylint errors fixed

* pynanoleaf bump

homeassistant/components/light/nanoleaf.py

@@ -19,7 +19,7 @@ from homeassistant.util.color import \
     color_temperature_mired_to_kelvin as mired_to_kelvin
 from homeassistant.util.json import load_json, save_json
 
-REQUIREMENTS = ['pynanoleaf==0.0.2']
+REQUIREMENTS = ['pynanoleaf==0.0.5']
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -43,7 +43,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
 
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the Nanoleaf light."""
-    import pynanoleaf
+    from pynanoleaf import Nanoleaf, Unavailable
     if DATA_NANOLEAF not in hass.data:
         hass.data[DATA_NANOLEAF] = dict()
 
@@ -63,7 +63,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
         name = config[CONF_NAME]
         token = config[CONF_TOKEN]
 
-    nanoleaf_light = pynanoleaf.Nanoleaf(host)
+    nanoleaf_light = Nanoleaf(host)
 
     if not token:
         token = nanoleaf_light.request_token()
@@ -78,7 +78,9 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 
     nanoleaf_light.token = token
 
-    if nanoleaf_light.on is None:
+    try:
+        nanoleaf_light.available
+    except Unavailable:
         _LOGGER.error(
             "Could not connect to Nanoleaf Light: %s on %s", name, host)
         return
@@ -92,6 +94,7 @@ class NanoleafLight(Light):
 
     def __init__(self, light, name):
         """Initialize an Nanoleaf light."""
+        self._available = True
         self._brightness = None
         self._color_temp = None
         self._effect = None
@@ -101,6 +104,11 @@ class NanoleafLight(Light):
         self._hs_color = None
         self._state = None
 
+    @property
+    def available(self):
+        """Return availability."""
+        return self._available
+
     @property
     def brightness(self):
         """Return the brightness of the light."""
@@ -187,9 +195,15 @@ class NanoleafLight(Light):
 
     def update(self):
         """Fetch new state data for this light."""
-        self._brightness = self._light.brightness
-        self._color_temp = self._light.color_temperature
-        self._effect = self._light.effect
-        self._effects_list = self._light.effects
-        self._hs_color = self._light.hue, self._light.saturation
-        self._state = self._light.on
+        try:
+            self._available = self._light.available
+            self._brightness = self._light.brightness
+            self._color_temp = self._light.color_temperature
+            self._effect = self._light.effect
+            self._effects_list = self._light.effects
+            self._hs_color = self._light.hue, self._light.saturation
+            self._state = self._light.on
+        except Exception as err:  # pylint:disable=broad-except
+            _LOGGER.error("Could not update status for %s (%s)",
+                          self.name, err)
+            self._available = False

requirements_all.txt

@@ -1174,7 +1174,7 @@ pymyq==1.1.0
 pymysensors==0.18.0
 
 # homeassistant.components.light.nanoleaf
-pynanoleaf==0.0.2
+pynanoleaf==0.0.5
 
 # homeassistant.components.lock.nello
 pynello==2.0.2