67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
"""Base class Harmony entities."""
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from __future__ import annotations
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from collections.abc import Callable
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from datetime import datetime
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import logging
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from homeassistant.core import callback
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from homeassistant.helpers.entity import Entity
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from homeassistant.helpers.event import async_call_later
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from .data import HarmonyData
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_LOGGER = logging.getLogger(__name__)
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TIME_MARK_DISCONNECTED = 10
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class HarmonyEntity(Entity):
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"""Base entity for Harmony with connection state handling."""
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_attr_has_entity_name = True
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def __init__(self, data: HarmonyData) -> None:
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"""Initialize the Harmony base entity."""
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super().__init__()
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self._unsub_mark_disconnected: Callable[[], None] | None = None
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self._data = data
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self._attr_should_poll = False
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@property
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def available(self) -> bool:
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"""Return True if we're connected to the Hub, otherwise False."""
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return self._data.available
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async def async_got_connected(self, _: str | None = None) -> None:
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"""Notification that we're connected to the HUB."""
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_LOGGER.debug("%s: connected to the HUB", self._data.name)
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self.async_write_ha_state()
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self._async_clear_disconnection_delay()
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async def async_got_disconnected(self, _: str | None = None) -> None:
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"""Notification that we're disconnected from the HUB."""
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_LOGGER.debug("%s: disconnected from the HUB", self._data.name)
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# We're going to wait for 10 seconds before announcing we're
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# unavailable, this to allow a reconnection to happen.
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self._unsub_mark_disconnected = async_call_later(
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self.hass,
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TIME_MARK_DISCONNECTED,
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self._async_mark_disconnected_if_unavailable,
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)
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@callback
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def _async_clear_disconnection_delay(self) -> None:
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if self._unsub_mark_disconnected:
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self._unsub_mark_disconnected()
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self._unsub_mark_disconnected = None
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@callback
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def _async_mark_disconnected_if_unavailable(self, _: datetime) -> None:
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self._unsub_mark_disconnected = None
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if not self.available:
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# Still disconnected. Let the state engine know.
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self.async_write_ha_state()
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