mirror of
https://github.com/home-assistant/core
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68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
"""IoTaWatt DataUpdateCoordinator."""
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from __future__ import annotations
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from datetime import datetime, timedelta
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import logging
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from iotawattpy.iotawatt import Iotawatt
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
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from homeassistant.core import HomeAssistant
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from homeassistant.helpers import httpx_client
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from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
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from .const import CONNECTION_ERRORS
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_LOGGER = logging.getLogger(__name__)
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class IotawattUpdater(DataUpdateCoordinator):
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"""Class to manage fetching update data from the IoTaWatt Energy Device."""
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api: Iotawatt | None = None
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def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
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"""Initialize IotaWattUpdater object."""
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self.entry = entry
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super().__init__(
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hass=hass,
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logger=_LOGGER,
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name=entry.title,
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update_interval=timedelta(seconds=30),
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)
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self._last_run: datetime | None = None
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def update_last_run(self, last_run: datetime) -> None:
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"""Notify coordinator of a sensor last update time."""
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# We want to fetch the data from the iotawatt since HA was last shutdown.
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# We retrieve from the sensor last updated.
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# This method is called from each sensor upon their state being restored.
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if self._last_run is None or last_run > self._last_run:
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self._last_run = last_run
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async def _async_update_data(self):
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"""Fetch sensors from IoTaWatt device."""
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if self.api is None:
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api = Iotawatt(
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self.entry.title,
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self.entry.data[CONF_HOST],
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httpx_client.get_async_client(self.hass),
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self.entry.data.get(CONF_USERNAME),
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self.entry.data.get(CONF_PASSWORD),
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)
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try:
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is_authenticated = await api.connect()
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except CONNECTION_ERRORS as err:
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raise UpdateFailed("Connection failed") from err
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if not is_authenticated:
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raise UpdateFailed("Authentication error")
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self.api = api
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await self.api.update(lastUpdate=self._last_run)
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self._last_run = None
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return self.api.getSensors()
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