core/homeassistant/components/sensor/rainmachine.py

90 lines
2.6 KiB
Python

"""
This platform provides support for sensor data from RainMachine.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/sensor.rainmachine/
"""
import logging
from homeassistant.components.rainmachine import (
DATA_RAINMACHINE, SENSOR_UPDATE_TOPIC, SENSORS, RainMachineEntity)
from homeassistant.const import CONF_MONITORED_CONDITIONS
from homeassistant.core import callback
from homeassistant.helpers.dispatcher import async_dispatcher_connect
DEPENDENCIES = ['rainmachine']
_LOGGER = logging.getLogger(__name__)
async def async_setup_platform(
hass, config, async_add_entities, discovery_info=None):
"""Set up the RainMachine Switch platform."""
if discovery_info is None:
return
rainmachine = hass.data[DATA_RAINMACHINE]
sensors = []
for sensor_type in discovery_info[CONF_MONITORED_CONDITIONS]:
name, icon, unit = SENSORS[sensor_type]
sensors.append(
RainMachineSensor(rainmachine, sensor_type, name, icon, unit))
async_add_entities(sensors, True)
class RainMachineSensor(RainMachineEntity):
"""A sensor implementation for raincloud device."""
def __init__(self, rainmachine, sensor_type, name, icon, unit):
"""Initialize."""
super().__init__(rainmachine)
self._icon = icon
self._name = name
self._sensor_type = sensor_type
self._state = None
self._unit = unit
@property
def icon(self) -> str:
"""Return the icon."""
return self._icon
@property
def should_poll(self):
"""Disable polling."""
return False
@property
def state(self) -> str:
"""Return the name of the entity."""
return self._state
@property
def unique_id(self) -> str:
"""Return a unique, HASS-friendly identifier for this entity."""
return '{0}_{1}'.format(
self.rainmachine.device_mac.replace(':', ''), self._sensor_type)
@property
def unit_of_measurement(self):
"""Return the unit the value is expressed in."""
return self._unit
@callback
def _update_data(self):
"""Update the state."""
self.async_schedule_update_ha_state(True)
async def async_added_to_hass(self):
"""Register callbacks."""
async_dispatcher_connect(
self.hass, SENSOR_UPDATE_TOPIC, self._update_data)
async def async_update(self):
"""Update the sensor's state."""
self._state = self.rainmachine.restrictions['global'][
'freezeProtectTemp']