coordinator.py

Go to the documentation of this file.

"""Data UpdateCoordinator for the Husqvarna Automower integration."""
 
import asyncio
from datetime import timedelta
import logging
 
from aioautomower.exceptions import (
    ApiException,
    AuthException,
    HusqvarnaWSServerHandshakeError,
    TimeoutException,
)
from aioautomower.model import MowerAttributes
from aioautomower.session import AutomowerSession
 
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import ConfigEntryAuthFailed
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
from .const import DOMAIN
 
_LOGGER = logging.getLogger(__name__)
MAX_WS_RECONNECT_TIME = 600
SCAN_INTERVAL = timedelta(minutes=8)
DEFAULT_RECONNECT_TIME = 2  # Define a default reconnect time
 
 
class AutomowerDataUpdateCoordinator(DataUpdateCoordinator[dict[str, MowerAttributes]]):
    """Class to manage fetching Husqvarna data."""
 
    config_entry: ConfigEntry
 
    def __init__(
        self, hass: HomeAssistant, api: AutomowerSession, entry: ConfigEntry
    ) -> None:
        """Initialize data updater."""
        super().__init__(
            hass,
            _LOGGER,
            name=DOMAIN,
            update_interval=SCAN_INTERVAL,
        )
        self.apiapi = api
        self.ws_connectedws_connected: bool = False
        self.reconnect_timereconnect_time = DEFAULT_RECONNECT_TIME
 
    async def _async_update_data(self) -> dict[str, MowerAttributes]:
        """Subscribe for websocket and poll data from the API."""
        if not self.ws_connectedws_connected:
            await self.apiapi.connect()
            self.apiapi.register_data_callback(self.callbackcallback)
            self.ws_connectedws_connected = True
        try:
            return await self.apiapi.get_status()
        except ApiException as err:
            raise UpdateFailed(err) from err
        except AuthException as err:
            raise ConfigEntryAuthFailed(err) from err
 
    @callback
    def callback(self, ws_data: dict[str, MowerAttributes]) -> None:
        """Process websocket callbacks and write them to the DataUpdateCoordinator."""
        self.async_set_updated_dataasync_set_updated_data(ws_data)
 
    async def client_listen(
        self,
        hass: HomeAssistant,
        entry: ConfigEntry,
        automower_client: AutomowerSession,
    ) -> None:
        """Listen with the client."""
        try:
            await automower_client.auth.websocket_connect()
            # Reset reconnect time after successful connection
            self.reconnect_timereconnect_time = DEFAULT_RECONNECT_TIME
            await automower_client.start_listening()
        except HusqvarnaWSServerHandshakeError as err:
            _LOGGER.debug(
                "Failed to connect to websocket. Trying to reconnect: %s",
                err,
            )
        except TimeoutException as err:
            _LOGGER.debug(
                "Failed to listen to websocket. Trying to reconnect: %s",
                err,
            )
        if not hass.is_stopping:
            await asyncio.sleep(self.reconnect_timereconnect_time)
            self.reconnect_timereconnect_time = min(self.reconnect_timereconnect_time * 2, MAX_WS_RECONNECT_TIME)
            entry.async_create_background_task(
                hass,
                self.client_listenclient_listen(hass, entry, automower_client),
                "reconnect_task",
            )