83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
"""The Brother component."""
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from __future__ import annotations
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from datetime import timedelta
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import logging
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from brother import Brother, DictToObj, SnmpError, UnsupportedModel
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import pysnmp.hlapi.asyncio as SnmpEngine
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import CONF_HOST, CONF_TYPE
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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 DATA_CONFIG_ENTRY, DOMAIN, SNMP
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from .utils import get_snmp_engine
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PLATFORMS = ["sensor"]
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SCAN_INTERVAL = timedelta(seconds=30)
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_LOGGER = logging.getLogger(__name__)
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async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
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"""Set up Brother from a config entry."""
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host = entry.data[CONF_HOST]
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kind = entry.data[CONF_TYPE]
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snmp_engine = get_snmp_engine(hass)
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coordinator = BrotherDataUpdateCoordinator(
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hass, host=host, kind=kind, snmp_engine=snmp_engine
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)
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await coordinator.async_config_entry_first_refresh()
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hass.data.setdefault(DOMAIN, {})
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hass.data[DOMAIN].setdefault(DATA_CONFIG_ENTRY, {})
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hass.data[DOMAIN][DATA_CONFIG_ENTRY][entry.entry_id] = coordinator
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hass.data[DOMAIN][SNMP] = snmp_engine
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hass.config_entries.async_setup_platforms(entry, PLATFORMS)
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return True
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async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
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"""Unload a config entry."""
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unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
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if unload_ok:
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hass.data[DOMAIN][DATA_CONFIG_ENTRY].pop(entry.entry_id)
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if not hass.data[DOMAIN][DATA_CONFIG_ENTRY]:
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hass.data[DOMAIN].pop(SNMP)
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hass.data[DOMAIN].pop(DATA_CONFIG_ENTRY)
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return unload_ok
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class BrotherDataUpdateCoordinator(DataUpdateCoordinator):
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"""Class to manage fetching Brother data from the printer."""
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def __init__(
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self, hass: HomeAssistant, host: str, kind: str, snmp_engine: SnmpEngine
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) -> None:
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"""Initialize."""
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self.brother = Brother(host, kind=kind, snmp_engine=snmp_engine)
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super().__init__(
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hass,
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_LOGGER,
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name=DOMAIN,
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update_interval=SCAN_INTERVAL,
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)
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async def _async_update_data(self) -> DictToObj:
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"""Update data via library."""
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try:
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data = await self.brother.async_update()
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except (ConnectionError, SnmpError, UnsupportedModel) as error:
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raise UpdateFailed(error) from error
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return data
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