75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
"""Helpers for LaMetric."""
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from __future__ import annotations
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from collections.abc import Callable, Coroutine
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from typing import Any, TypeVar
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from demetriek import LaMetricConnectionError, LaMetricError
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from typing_extensions import Concatenate, ParamSpec
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.exceptions import HomeAssistantError
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from homeassistant.helpers import device_registry as dr
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from .const import DOMAIN
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from .coordinator import LaMetricDataUpdateCoordinator
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from .entity import LaMetricEntity
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_LaMetricEntityT = TypeVar("_LaMetricEntityT", bound=LaMetricEntity)
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_P = ParamSpec("_P")
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def lametric_exception_handler(
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func: Callable[Concatenate[_LaMetricEntityT, _P], Coroutine[Any, Any, Any]]
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) -> Callable[Concatenate[_LaMetricEntityT, _P], Coroutine[Any, Any, None]]:
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"""Decorate LaMetric calls to handle LaMetric exceptions.
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A decorator that wraps the passed in function, catches LaMetric errors,
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and handles the availability of the device in the data coordinator.
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"""
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async def handler(
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self: _LaMetricEntityT, *args: _P.args, **kwargs: _P.kwargs
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) -> None:
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try:
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await func(self, *args, **kwargs)
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self.coordinator.async_update_listeners()
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except LaMetricConnectionError as error:
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self.coordinator.last_update_success = False
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self.coordinator.async_update_listeners()
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raise HomeAssistantError(
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"Error communicating with the LaMetric device"
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) from error
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except LaMetricError as error:
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raise HomeAssistantError(
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"Invalid response from the LaMetric device"
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) from error
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return handler
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@callback
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def async_get_coordinator_by_device_id(
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hass: HomeAssistant, device_id: str
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) -> LaMetricDataUpdateCoordinator:
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"""Get the LaMetric coordinator for this device ID."""
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device_registry = dr.async_get(hass)
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if (device_entry := device_registry.async_get(device_id)) is None:
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raise ValueError(f"Unknown LaMetric device ID: {device_id}")
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for entry_id in device_entry.config_entries:
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if (
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(entry := hass.config_entries.async_get_entry(entry_id))
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and entry.domain == DOMAIN
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and entry.entry_id in hass.data[DOMAIN]
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):
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coordinator: LaMetricDataUpdateCoordinator = hass.data[DOMAIN][
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entry.entry_id
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]
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return coordinator
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raise ValueError(f"No coordinator for device ID: {device_id}")
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