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Use a cache object to reduce the frequency of calls to APCUPSd

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This commit is contained in:
Flyte 2016-02-11 07:33:53 +00:00
parent bb8981b611
commit 91fb2764cc
3 changed files with 59 additions and 51 deletions
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17
homeassistant/components/binary_sensor/apcupsd.py
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@ -3,7 +3,6 @@ homeassistant.components.binary_sensor.apcupsd
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Provides a binary sensor to track online status of a UPS.
"""
from homeassistant.core import JobPriority
from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components import apcupsd
@ -15,17 +14,16 @@ DEFAULT_NAME = "UPS Online Status"
def setup_platform(hass, config, add_entities, discovery_info=None):
""" Instantiate an OnlineStatus binary sensor entity and add it to HA. """
add_entities((OnlineStatus(hass, config),))
add_entities((OnlineStatus(config, apcupsd.DATA),))
class OnlineStatus(BinarySensorDevice):
""" Binary sensor to represent UPS online status. """
def __init__(self, hass, config):
def __init__(self, config, data):
self._config = config
self._data = data
self._state = None
# Get initial state
hass.pool.add_job(
JobPriority.EVENT_STATE, (self.update_ha_state, True))
self.update()
@property
def name(self):
@ -39,8 +37,7 @@ class OnlineStatus(BinarySensorDevice):
def update(self):
"""
Get the latest status report from APCUPSd and establish whether the
UPS is online.
Get the status report from APCUPSd (or cache) and set this entity's
state.
"""
status = apcupsd.GET_STATUS()
self._state = status[apcupsd.KEY_STATUS]
self._state = self._data.status[apcupsd.KEY_STATUS]