core/homeassistant/components/bond/entity.py

78 lines
2.6 KiB
Python

"""An abstract class common to all Bond entities."""
from abc import abstractmethod
from asyncio import TimeoutError as AsyncIOTimeoutError
import logging
from typing import Any, Dict, Optional
from aiohttp import ClientError
from homeassistant.const import ATTR_NAME
from homeassistant.helpers.entity import Entity
from .const import DOMAIN
from .utils import BondDevice, BondHub
_LOGGER = logging.getLogger(__name__)
class BondEntity(Entity):
"""Generic Bond entity encapsulating common features of any Bond controlled device."""
def __init__(self, hub: BondHub, device: BondDevice):
"""Initialize entity with API and device info."""
self._hub = hub
self._device = device
self._available = True
@property
def unique_id(self) -> Optional[str]:
"""Get unique ID for the entity."""
hub_id = self._hub.bond_id
device_id = self._device.device_id
return f"{hub_id}_{device_id}"
@property
def name(self) -> Optional[str]:
"""Get entity name."""
return self._device.name
@property
def device_info(self) -> Optional[Dict[str, Any]]:
"""Get a an HA device representing this Bond controlled device."""
return {
ATTR_NAME: self.name,
"identifiers": {(DOMAIN, self._device.device_id)},
"via_device": (DOMAIN, self._hub.bond_id),
}
@property
def assumed_state(self) -> bool:
"""Let HA know this entity relies on an assumed state tracked by Bond."""
return self._hub.is_bridge and not self._device.trust_state
@property
def available(self) -> bool:
"""Report availability of this entity based on last API call results."""
return self._available
async def async_update(self):
"""Fetch assumed state of the cover from the hub using API."""
try:
state: dict = await self._hub.bond.device_state(self._device.device_id)
except (ClientError, AsyncIOTimeoutError, OSError) as error:
if self._available:
_LOGGER.warning(
"Entity %s has become unavailable", self.entity_id, exc_info=error
)
self._available = False
else:
_LOGGER.debug("Device state for %s is:\n%s", self.entity_id, state)
if not self._available:
_LOGGER.info("Entity %s has come back", self.entity_id)
self._available = True
self._apply_state(state)
@abstractmethod
def _apply_state(self, state: dict):
raise NotImplementedError