core/homeassistant/components/guardian/util.py

146 lines
4.5 KiB
Python

"""Define Guardian-specific utilities."""
from __future__ import annotations
import asyncio
from collections.abc import Callable, Coroutine, Iterable
from dataclasses import dataclass
from datetime import timedelta
from functools import wraps
from typing import TYPE_CHECKING, Any, Concatenate, ParamSpec, TypeVar, cast
from aioguardian import Client
from aioguardian.errors import GuardianError
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers import entity_registry as er
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
from .const import LOGGER
if TYPE_CHECKING:
from . import GuardianEntity
_GuardianEntityT = TypeVar("_GuardianEntityT", bound=GuardianEntity)
DEFAULT_UPDATE_INTERVAL = timedelta(seconds=30)
SIGNAL_REBOOT_REQUESTED = "guardian_reboot_requested_{0}"
@dataclass
class EntityDomainReplacementStrategy:
"""Define an entity replacement."""
old_domain: str
old_unique_id: str
@callback
def async_finish_entity_domain_replacements(
hass: HomeAssistant,
entry: ConfigEntry,
entity_replacement_strategies: Iterable[EntityDomainReplacementStrategy],
) -> None:
"""Remove old entities and create a repairs issue with info on their replacement."""
ent_reg = er.async_get(hass)
for strategy in entity_replacement_strategies:
try:
[registry_entry] = [
registry_entry
for registry_entry in ent_reg.entities.values()
if registry_entry.config_entry_id == entry.entry_id
and registry_entry.domain == strategy.old_domain
and registry_entry.unique_id == strategy.old_unique_id
]
except ValueError:
continue
old_entity_id = registry_entry.entity_id
LOGGER.info('Removing old entity: "%s"', old_entity_id)
ent_reg.async_remove(old_entity_id)
class GuardianDataUpdateCoordinator(DataUpdateCoordinator[dict]):
"""Define an extended DataUpdateCoordinator with some Guardian goodies."""
config_entry: ConfigEntry
def __init__(
self,
hass: HomeAssistant,
*,
entry: ConfigEntry,
client: Client,
api_name: str,
api_coro: Callable[..., Coroutine[Any, Any, dict[str, Any]]],
api_lock: asyncio.Lock,
valve_controller_uid: str,
) -> None:
"""Initialize."""
super().__init__(
hass,
LOGGER,
name=f"{valve_controller_uid}_{api_name}",
update_interval=DEFAULT_UPDATE_INTERVAL,
)
self._api_coro = api_coro
self._api_lock = api_lock
self._client = client
self.config_entry = entry
self.signal_reboot_requested = SIGNAL_REBOOT_REQUESTED.format(
self.config_entry.entry_id
)
async def _async_update_data(self) -> dict[str, Any]:
"""Execute a "locked" API request against the valve controller."""
async with self._api_lock, self._client:
try:
resp = await self._api_coro()
except GuardianError as err:
raise UpdateFailed(err) from err
return cast(dict[str, Any], resp["data"])
async def async_initialize(self) -> None:
"""Initialize the coordinator."""
@callback
def async_reboot_requested() -> None:
"""Respond to a reboot request."""
self.last_update_success = False
self.async_update_listeners()
self.config_entry.async_on_unload(
async_dispatcher_connect(
self.hass, self.signal_reboot_requested, async_reboot_requested
)
)
_P = ParamSpec("_P")
@callback
def convert_exceptions_to_homeassistant_error(
func: Callable[Concatenate[_GuardianEntityT, _P], Coroutine[Any, Any, Any]],
) -> Callable[Concatenate[_GuardianEntityT, _P], Coroutine[Any, Any, None]]:
"""Decorate to handle exceptions from the Guardian API."""
@wraps(func)
async def wrapper(
entity: _GuardianEntityT, *args: _P.args, **kwargs: _P.kwargs
) -> None:
"""Wrap the provided function."""
try:
await func(entity, *args, **kwargs)
except GuardianError as err:
raise HomeAssistantError(
f"Error while calling {func.__name__}: {err}"
) from err
return wrapper