core/homeassistant/components/zoneminder/binary_sensor.py

51 lines
1.5 KiB
Python

"""
Support for ZoneMinder Binary Sensor.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/binary_sensor.zoneminder/
"""
from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components.zoneminder import DOMAIN as ZONEMINDER_DOMAIN
DEPENDENCIES = ['zoneminder']
async def async_setup_platform(hass, config, add_entities,
discovery_info=None):
"""Set up the ZoneMinder binary sensor platform."""
sensors = []
for host_name, zm_client in hass.data[ZONEMINDER_DOMAIN].items():
sensors.append(ZMAvailabilitySensor(host_name, zm_client))
add_entities(sensors)
return True
class ZMAvailabilitySensor(BinarySensorDevice):
"""Representation of the availability of ZoneMinder as a binary sensor."""
def __init__(self, host_name, client):
"""Initialize availability sensor."""
self._state = None
self._name = host_name
self._client = client
@property
def name(self):
"""Return the name of this binary sensor."""
return self._name
@property
def is_on(self):
"""Return true if the binary sensor is on."""
return self._state
@property
def device_class(self):
"""Return the class of this device, from component DEVICE_CLASSES."""
return 'connectivity'
def update(self):
"""Update the state of this sensor (availability of ZoneMinder)."""
self._state = self._client.is_available