103 lines
2.9 KiB
Python
103 lines
2.9 KiB
Python
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"""The Brother component."""
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import asyncio
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from datetime import timedelta
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import logging
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from brother import Brother, SnmpError, UnsupportedModel
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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 Config, HomeAssistant
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from homeassistant.exceptions import ConfigEntryNotReady
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from homeassistant.util import Throttle
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from .const import DOMAIN
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PLATFORMS = ["sensor"]
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DEFAULT_SCAN_INTERVAL = timedelta(seconds=30)
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_LOGGER = logging.getLogger(__name__)
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async def async_setup(hass: HomeAssistant, config: Config):
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"""Set up the Brother component."""
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hass.data[DOMAIN] = {}
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return True
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async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
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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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brother = BrotherPrinterData(host, kind)
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await brother.async_update()
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if not brother.available:
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raise ConfigEntryNotReady()
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hass.data[DOMAIN][entry.entry_id] = brother
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for component in PLATFORMS:
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hass.async_create_task(
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hass.config_entries.async_forward_entry_setup(entry, component)
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)
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return True
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async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
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"""Unload a config entry."""
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unload_ok = all(
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await asyncio.gather(
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*[
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hass.config_entries.async_forward_entry_unload(entry, component)
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for component in PLATFORMS
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]
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)
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)
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if unload_ok:
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hass.data[DOMAIN].pop(entry.entry_id)
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return unload_ok
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class BrotherPrinterData:
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"""Define an object to hold sensor data."""
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def __init__(self, host, kind):
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"""Initialize."""
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self._brother = Brother(host, kind=kind)
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self.host = host
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self.model = None
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self.serial = None
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self.firmware = None
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self.available = False
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self.data = {}
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self.unavailable_logged = False
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@Throttle(DEFAULT_SCAN_INTERVAL)
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async def async_update(self):
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"""Update data via library."""
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try:
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await self._brother.async_update()
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except (ConnectionError, SnmpError, UnsupportedModel) as error:
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if not self.unavailable_logged:
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_LOGGER.error(
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"Could not fetch data from %s, error: %s", self.host, error
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)
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self.unavailable_logged = True
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self.available = self._brother.available
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return
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self.model = self._brother.model
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self.serial = self._brother.serial
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self.firmware = self._brother.firmware
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self.available = self._brother.available
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self.data = self._brother.data
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if self.available and self.unavailable_logged:
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_LOGGER.info("Printer %s is available again", self.host)
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self.unavailable_logged = False
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