74 lines
2.1 KiB
Python
74 lines
2.1 KiB
Python
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"""Support for Dyson Pure Cool Link Sensors."""
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import logging
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import asyncio
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from homeassistant.const import STATE_UNKNOWN
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from homeassistant.components.dyson import DYSON_DEVICES
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from homeassistant.helpers.entity import Entity
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DEPENDENCIES = ['dyson']
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SENSOR_UNITS = {'filter_life': 'hours'}
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_LOGGER = logging.getLogger(__name__)
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Set up the Dyson Sensors."""
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_LOGGER.info("Creating new Dyson fans")
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devices = []
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# Get Dyson Devices from parent component
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for device in hass.data[DYSON_DEVICES]:
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devices.append(DysonFilterLifeSensor(hass, device))
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add_devices(devices)
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class DysonFilterLifeSensor(Entity):
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"""Representation of Dyson filter life sensor (in hours)."""
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def __init__(self, hass, device):
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"""Create a new Dyson filter life sensor."""
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self.hass = hass
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self._device = device
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self._name = "{} filter life".format(self._device.name)
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self._old_value = None
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@asyncio.coroutine
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def async_added_to_hass(self):
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"""Callback when entity is added to hass."""
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self.hass.async_add_job(
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self._device.add_message_listener(self.on_message))
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def on_message(self, message):
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"""Called when new messages received from the fan."""
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_LOGGER.debug(
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"Message received for %s device: %s", self.name, message)
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# Prevent refreshing if not needed
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if self._old_value is None or self._old_value != self.state:
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self._old_value = self.state
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self.schedule_update_ha_state()
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@property
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def should_poll(self):
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"""No polling needed."""
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return False
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@property
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def state(self):
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"""Return filter life in hours.."""
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if self._device.state:
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return self._device.state.filter_life
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else:
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return STATE_UNKNOWN
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@property
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def name(self):
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"""Return the name of the dyson sensor name."""
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return self._name
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@property
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def unit_of_measurement(self):
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"""Return the unit the value is expressed in."""
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return SENSOR_UNITS['filter_life']
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