83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
"""
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Support for WeMo sensors.
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For more details about this component, please refer to the documentation at
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https://home-assistant.io/components/binary_sensor.wemo/
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"""
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import logging
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from homeassistant.components.binary_sensor import BinarySensorDevice
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from homeassistant.loader import get_component
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DEPENDENCIES = ['wemo']
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_LOGGER = logging.getLogger(__name__)
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# pylint: disable=unused-argument, too-many-function-args
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def setup_platform(hass, config, add_devices_callback, discovery_info=None):
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"""Register discovered WeMo binary sensors."""
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import pywemo.discovery as discovery
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if discovery_info is not None:
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location = discovery_info['ssdp_description']
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mac = discovery_info['mac_address']
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device = discovery.device_from_description(location, mac)
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if device:
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add_devices_callback([WemoBinarySensor(device)])
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class WemoBinarySensor(BinarySensorDevice):
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"""Representation a WeMo binary sensor."""
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def __init__(self, device):
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"""Initialize the WeMo sensor."""
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self.wemo = device
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self._state = None
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wemo = get_component('wemo')
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wemo.SUBSCRIPTION_REGISTRY.register(self.wemo)
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wemo.SUBSCRIPTION_REGISTRY.on(self.wemo, None, self._update_callback)
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def _update_callback(self, _device, _type, _params):
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"""Handle state changes."""
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_LOGGER.info("Subscription update for %s", _device)
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updated = self.wemo.subscription_update(_type, _params)
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self._update(force_update=(not updated))
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if not hasattr(self, 'hass'):
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return
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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 with subscriptions."""
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return False
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@property
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def unique_id(self):
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"""Return the id of this WeMo device."""
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return '{}.{}'.format(self.__class__, self.wemo.serialnumber)
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@property
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def name(self):
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"""Return the name of the sevice if any."""
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return self.wemo.name
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@property
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def is_on(self):
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"""Return true if sensor is on."""
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return self._state
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def update(self):
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"""Update WeMo state."""
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self._update(force_update=True)
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def _update(self, force_update=True):
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try:
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self._state = self.wemo.get_state(force_update)
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except AttributeError as err:
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_LOGGER.warning(
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"Could not update status for %s (%s)", self.name, err)
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