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b4bac0f7a0
* Remove unnecessary exception re-wraps * Preserve exception chains on re-raise We slap "from cause" to almost all possible cases here. In some cases it could conceivably be better to do "from None" if we really want to hide the cause. However those should be in the minority, and "from cause" should be an improvement over the corresponding raise without a "from" in all cases anyway. The only case where we raise from None here is in plex, where the exception for an original invalid SSL cert is not the root cause for failure to validate a newly fetched one. Follow local convention on exception variable names if there is a consistent one, otherwise `err` to match with majority of codebase. * Fix mistaken re-wrap in homematicip_cloud/hap.py Missed the difference between HmipConnectionError and HmipcConnectionError. * Do not hide original error on plex new cert validation error Original is not the cause for the new one, but showing old in the traceback is useful nevertheless.
87 lines
2.4 KiB
Python
87 lines
2.4 KiB
Python
"""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.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
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from .const import DOMAIN
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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(hass: HomeAssistant, config: Config):
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"""Set up the Brother component."""
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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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coordinator = BrotherDataUpdateCoordinator(hass, host=host, kind=kind)
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await coordinator.async_refresh()
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if not coordinator.last_update_success:
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raise ConfigEntryNotReady
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hass.data.setdefault(DOMAIN, {})
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hass.data[DOMAIN][entry.entry_id] = coordinator
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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 BrotherDataUpdateCoordinator(DataUpdateCoordinator):
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"""Class to manage fetching Brother data from the printer."""
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def __init__(self, hass, host, kind):
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"""Initialize."""
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self.brother = Brother(host, kind=kind)
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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):
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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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raise UpdateFailed(error) from error
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return self.brother.data
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