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Allow inverting netdata sensor values (#21711)

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* Allow inverting netdata sensor values

* Fix lint issue

* Use parentheses
This commit is contained in:
Michaël Arnauts 2019-03-11 16:13:53 +01:00 committed by Fabian Affolter
parent 785fd273e3
commit bc76055c17
1 changed files with 9 additions and 3 deletions
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12
homeassistant/components/sensor/netdata.py
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@ -26,6 +26,7 @@ MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=1)
CONF_DATA_GROUP = 'data_group'
CONF_ELEMENT = 'element'
CONF_INVERT = 'invert'
DEFAULT_HOST = 'localhost'
DEFAULT_NAME = 'Netdata'
@ -37,6 +38,7 @@ RESOURCE_SCHEMA = vol.Any({
vol.Required(CONF_DATA_GROUP): cv.string,
vol.Required(CONF_ELEMENT): cv.string,
vol.Optional(CONF_ICON, default=DEFAULT_ICON): cv.icon,
vol.Optional(CONF_INVERT, default=False): cv.boolean,
})
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
@ -69,6 +71,7 @@ async def async_setup_platform(
icon = data[CONF_ICON]
sensor = data[CONF_DATA_GROUP]
element = data[CONF_ELEMENT]
invert = data[CONF_INVERT]
sensor_name = entry
try:
resource_data = netdata.api.metrics[sensor]
@ -79,7 +82,7 @@ async def async_setup_platform(
continue
dev.append(NetdataSensor(
netdata, name, sensor, sensor_name, element, icon, unit))
netdata, name, sensor, sensor_name, element, icon, unit, invert))
async_add_entities(dev, True)
@ -88,7 +91,8 @@ class NetdataSensor(Entity):
"""Implementation of a Netdata sensor."""
def __init__(
self, netdata, name, sensor, sensor_name, element, icon, unit):
self, netdata, name, sensor, sensor_name, element, icon, unit,
invert):
"""Initialize the Netdata sensor."""
self.netdata = netdata
self._state = None
@ -99,6 +103,7 @@ class NetdataSensor(Entity):
self._name = name
self._icon = icon
self._unit_of_measurement = unit
self._invert = invert
@property
def name(self):
@ -130,7 +135,8 @@ class NetdataSensor(Entity):
await self.netdata.async_update()
resource_data = self.netdata.api.metrics.get(self._sensor)
self._state = round(
resource_data['dimensions'][self._element]['value'], 2)
resource_data['dimensions'][self._element]['value'], 2) \
* (-1 if self._invert else 1)
class NetdataData: