89 lines
2.2 KiB
Python
89 lines
2.2 KiB
Python
"""Support for APCUPSd via its Network Information Server (NIS)."""
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import logging
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from datetime import timedelta
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import voluptuous as vol
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from homeassistant.const import CONF_HOST, CONF_PORT
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import homeassistant.helpers.config_validation as cv
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from homeassistant.util import Throttle
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_LOGGER = logging.getLogger(__name__)
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CONF_TYPE = "type"
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DATA = None
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DEFAULT_HOST = "localhost"
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DEFAULT_PORT = 3551
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DOMAIN = "apcupsd"
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KEY_STATUS = "STATUS"
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MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=60)
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VALUE_ONLINE = "ONLINE"
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CONFIG_SCHEMA = vol.Schema(
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{
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DOMAIN: vol.Schema(
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{
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vol.Optional(CONF_HOST, default=DEFAULT_HOST): cv.string,
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vol.Optional(CONF_PORT, default=DEFAULT_PORT): cv.port,
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}
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)
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},
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extra=vol.ALLOW_EXTRA,
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)
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def setup(hass, config):
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"""Use config values to set up a function enabling status retrieval."""
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global DATA
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conf = config[DOMAIN]
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host = conf.get(CONF_HOST)
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port = conf.get(CONF_PORT)
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DATA = APCUPSdData(host, port)
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# It doesn't really matter why we're not able to get the status, just that
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# we can't.
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try:
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DATA.update(no_throttle=True)
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except Exception: # pylint: disable=broad-except
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_LOGGER.exception("Failure while testing APCUPSd status retrieval.")
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return False
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return True
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class APCUPSdData:
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"""Stores the data retrieved from APCUPSd.
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For each entity to use, acts as the single point responsible for fetching
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updates from the server.
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"""
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def __init__(self, host, port):
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"""Initialize the data object."""
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from apcaccess import status
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self._host = host
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self._port = port
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self._status = None
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self._get = status.get
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self._parse = status.parse
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@property
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def status(self):
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"""Get latest update if throttle allows. Return status."""
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self.update()
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return self._status
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def _get_status(self):
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"""Get the status from APCUPSd and parse it into a dict."""
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return self._parse(self._get(host=self._host, port=self._port))
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@Throttle(MIN_TIME_BETWEEN_UPDATES)
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def update(self, **kwargs):
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"""Fetch the latest status from APCUPSd."""
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self._status = self._get_status()
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