67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
"""DataUpdateCoordinator for the BSB-Lan integration."""
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from dataclasses import dataclass
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from datetime import timedelta
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from random import randint
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from bsblan import BSBLAN, BSBLANConnectionError, Sensor, State
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import CONF_HOST
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from homeassistant.core import HomeAssistant
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from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
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from .const import DOMAIN, LOGGER, SCAN_INTERVAL
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@dataclass
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class BSBLanCoordinatorData:
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"""BSBLan data stored in the Home Assistant data object."""
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state: State
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sensor: Sensor
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class BSBLanUpdateCoordinator(DataUpdateCoordinator[BSBLanCoordinatorData]):
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"""The BSB-Lan update coordinator."""
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config_entry: ConfigEntry
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def __init__(
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self,
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hass: HomeAssistant,
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config_entry: ConfigEntry,
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client: BSBLAN,
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) -> None:
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"""Initialize the BSB-Lan coordinator."""
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super().__init__(
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hass,
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logger=LOGGER,
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name=f"{DOMAIN}_{config_entry.data[CONF_HOST]}",
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update_interval=self._get_update_interval(),
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)
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self.client = client
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def _get_update_interval(self) -> timedelta:
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"""Get the update interval with a random offset.
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Use the default scan interval and add a random number of seconds to avoid timeouts when
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the BSB-Lan device is already/still busy retrieving data,
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e.g. for MQTT or internal logging.
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"""
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return SCAN_INTERVAL + timedelta(seconds=randint(1, 8))
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async def _async_update_data(self) -> BSBLanCoordinatorData:
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"""Get state and sensor data from BSB-Lan device."""
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try:
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state = await self.client.state()
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sensor = await self.client.sensor()
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except BSBLANConnectionError as err:
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host = self.config_entry.data[CONF_HOST] if self.config_entry else "unknown"
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raise UpdateFailed(
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f"Error while establishing connection with BSB-Lan device at {host}"
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) from err
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self.update_interval = self._get_update_interval()
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return BSBLanCoordinatorData(state=state, sensor=sensor)
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