81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
"""
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Component to retrieve uptime for Home Assistant.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/sensor.uptime/
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"""
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import asyncio
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import logging
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import voluptuous as vol
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import homeassistant.helpers.config_validation as cv
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import homeassistant.util.dt as dt_util
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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from homeassistant.const import (
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CONF_NAME, CONF_UNIT_OF_MEASUREMENT)
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from homeassistant.helpers.entity import Entity
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_LOGGER = logging.getLogger(__name__)
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DEFAULT_NAME = 'Uptime'
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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vol.Optional(CONF_UNIT_OF_MEASUREMENT, default='days'):
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vol.All(cv.string, vol.In(['minutes', 'hours', 'days']))
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})
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@asyncio.coroutine
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def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
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"""Set up the uptime sensor platform."""
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name = config.get(CONF_NAME)
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units = config.get(CONF_UNIT_OF_MEASUREMENT)
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async_add_devices([UptimeSensor(name, units)], True)
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class UptimeSensor(Entity):
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"""Representation of an uptime sensor."""
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def __init__(self, name, units):
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"""Initialize the uptime sensor."""
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self._name = name
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self._icon = 'mdi:clock'
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self._units = units
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self.initial = dt_util.now()
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self._state = None
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def icon(self):
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"""Icon to display in the front end."""
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return self._icon
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@property
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def unit_of_measurement(self):
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"""Return the unit of measurement the value is expressed in."""
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return self._units
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@property
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def state(self):
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"""Return the state of the sensor."""
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return self._state
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@asyncio.coroutine
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def async_update(self):
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"""Update the state of the sensor."""
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delta = dt_util.now() - self.initial
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div_factor = 3600
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if self.unit_of_measurement == 'days':
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div_factor *= 24
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elif self.unit_of_measurement == 'minutes':
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div_factor /= 60
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delta = delta.total_seconds() / div_factor
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self._state = round(delta, 2)
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_LOGGER.debug("New value: %s", delta)
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