core/homeassistant/components/apcupsd/__init__.py

156 lines
5.1 KiB
Python

"""Support for APCUPSd via its Network Information Server (NIS)."""
from __future__ import annotations
from datetime import timedelta
import logging
from typing import Any, Final
from apcaccess import status
import voluptuous as vol
from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
from homeassistant.const import CONF_HOST, CONF_PORT, Platform
from homeassistant.core import HomeAssistant
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.typing import ConfigType
from homeassistant.util import Throttle
_LOGGER = logging.getLogger(__name__)
DOMAIN: Final = "apcupsd"
VALUE_ONLINE: Final = 8
PLATFORMS: Final = (Platform.BINARY_SENSOR, Platform.SENSOR)
MIN_TIME_BETWEEN_UPDATES: Final = timedelta(seconds=60)
CONFIG_SCHEMA = vol.Schema(
{
DOMAIN: vol.Schema(
{
vol.Optional(CONF_HOST, default="localhost"): cv.string,
vol.Optional(CONF_PORT, default=3551): cv.port,
}
)
},
extra=vol.ALLOW_EXTRA,
)
async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
"""Set up integration from legacy YAML configurations."""
conf = config.get(DOMAIN)
if conf is None:
return True
# We only import configs from YAML if it hasn't been imported. If there is a config
# entry marked with SOURCE_IMPORT, it means the YAML config has been imported.
for entry in hass.config_entries.async_entries(DOMAIN):
if entry.source == SOURCE_IMPORT:
return True
# Since the YAML configuration for apcupsd consists of two parts:
# apcupsd:
# host: xxx
# port: xxx
# sensor:
# - platform: apcupsd
# resource:
# - resource_1
# - resource_2
# - ...
# Here at the integration set up we do not have the entire information to be
# imported to config flow yet. So we temporarily store the configuration to
# hass.data[DOMAIN] under a special entry_id SOURCE_IMPORT (which shouldn't
# conflict with other entry ids). Later when the sensor platform setup is
# called we gather the resources information and from there we start the
# actual config entry imports.
hass.data.setdefault(DOMAIN, {})
hass.data[DOMAIN][SOURCE_IMPORT] = conf
return True
async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> bool:
"""Use config values to set up a function enabling status retrieval."""
data_service = APCUPSdData(
config_entry.data[CONF_HOST], config_entry.data[CONF_PORT]
)
try:
await hass.async_add_executor_job(data_service.update)
except OSError as ex:
_LOGGER.error("Failure while testing APCUPSd status retrieval: %s", ex)
return False
# Store the data service object.
hass.data.setdefault(DOMAIN, {})
hass.data[DOMAIN][config_entry.entry_id] = data_service
# Forward the config entries to the supported platforms.
await hass.config_entries.async_forward_entry_setups(config_entry, PLATFORMS)
return True
async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
"""Unload a config entry."""
unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
hass.data[DOMAIN].pop(entry.entry_id)
return unload_ok
class APCUPSdData:
"""Stores the data retrieved from APCUPSd.
For each entity to use, acts as the single point responsible for fetching
updates from the server.
"""
def __init__(self, host: str, port: int) -> None:
"""Initialize the data object."""
self._host = host
self._port = port
self.status: dict[str, Any] = {}
@property
def name(self) -> str | None:
"""Return the name of the UPS, if available."""
return self.status.get("UPSNAME")
@property
def model(self) -> str | None:
"""Return the model of the UPS, if available."""
# Different UPS models may report slightly different keys for model, here we
# try them all.
for model_key in ("APCMODEL", "MODEL"):
if model_key in self.status:
return self.status[model_key]
return None
@property
def sw_version(self) -> str | None:
"""Return the software version of the APCUPSd, if available."""
return self.status.get("VERSION")
@property
def hw_version(self) -> str | None:
"""Return the firmware version of the UPS, if available."""
return self.status.get("FIRMWARE")
@property
def serial_no(self) -> str | None:
"""Return the unique serial number of the UPS, if available."""
return self.status.get("SERIALNO")
@property
def statflag(self) -> str | None:
"""Return the STATFLAG indicating the status of the UPS, if available."""
return self.status.get("STATFLAG")
@Throttle(MIN_TIME_BETWEEN_UPDATES)
def update(self, **kwargs):
"""Fetch the latest status from APCUPSd.
Note that the result dict uses upper case for each resource, where our
integration uses lower cases as keys internally.
"""
self.status = status.parse(status.get(host=self._host, port=self._port))