coordinator.py

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"""Coordinator for Brother integration."""
 
from asyncio import timeout
import logging
 
from brother import Brother, BrotherSensors, SnmpError, UnsupportedModelError
 
from homeassistant.core import HomeAssistant
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
from .const import DOMAIN, UPDATE_INTERVAL
 
_LOGGER = logging.getLogger(__name__)
 
 
class BrotherDataUpdateCoordinator(DataUpdateCoordinator[BrotherSensors]):
    """Class to manage fetching Brother data from the printer."""
 
    def __init__(self, hass: HomeAssistant, brother: Brother) -> None:
        """Initialize."""
        self.brotherbrother = brother
 
        super().__init__(
            hass,
            _LOGGER,
            name=DOMAIN,
            update_interval=UPDATE_INTERVAL,
        )
 
    async def _async_update_data(self) -> BrotherSensors:
        """Update data via library."""
        try:
            async with timeout(20):
                data = await self.brotherbrother.async_update()
        except (ConnectionError, SnmpError, UnsupportedModelError) as error:
            raise UpdateFailed(error) from error
        return data