core/homeassistant/components/demo/sensor.py

97 lines
2.5 KiB
Python

"""Demo platform that has a couple of fake sensors."""
from homeassistant.const import (
ATTR_BATTERY_LEVEL,
DEVICE_CLASS_HUMIDITY,
DEVICE_CLASS_TEMPERATURE,
TEMP_CELSIUS,
)
from homeassistant.helpers.entity import Entity
from . import DOMAIN
async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
"""Set up the Demo sensors."""
async_add_entities(
[
DemoSensor(
"sensor_1",
"Outside Temperature",
15.6,
DEVICE_CLASS_TEMPERATURE,
TEMP_CELSIUS,
12,
),
DemoSensor(
"sensor_2", "Outside Humidity", 54, DEVICE_CLASS_HUMIDITY, "%", None
),
]
)
async def async_setup_entry(hass, config_entry, async_add_entities):
"""Set up the Demo config entry."""
await async_setup_platform(hass, {}, async_add_entities)
class DemoSensor(Entity):
"""Representation of a Demo sensor."""
def __init__(
self, unique_id, name, state, device_class, unit_of_measurement, battery
):
"""Initialize the sensor."""
self._unique_id = unique_id
self._name = name
self._state = state
self._device_class = device_class
self._unit_of_measurement = unit_of_measurement
self._battery = battery
@property
def device_info(self):
"""Return device info."""
return {
"identifiers": {
# Serial numbers are unique identifiers within a specific domain
(DOMAIN, self.unique_id)
},
"name": self.name,
}
@property
def unique_id(self):
"""Return the unique id."""
return self._unique_id
@property
def should_poll(self):
"""No polling needed for a demo sensor."""
return False
@property
def device_class(self):
"""Return the device class of the sensor."""
return self._device_class
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def state(self):
"""Return the state of the sensor."""
return self._state
@property
def unit_of_measurement(self):
"""Return the unit this state is expressed in."""
return self._unit_of_measurement
@property
def device_state_attributes(self):
"""Return the state attributes."""
if self._battery:
return {ATTR_BATTERY_LEVEL: self._battery}