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Fix exception during history_stats startup (#16932)

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* Fix exception during history_stats startup

* Do not track changes during startup

* Ignore args
This commit is contained in:
Anders Melchiorsen 2018-09-29 21:22:24 +02:00 committed by Paulus Schoutsen
parent 3ddad83a84
commit caaf4f5694
1 changed files with 13 additions and 10 deletions
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19
homeassistant/components/sensor/history_stats.py
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@ -10,6 +10,7 @@ import math
import voluptuous as vol
from homeassistant.core import callback
from homeassistant.components import history
import homeassistant.helpers.config_validation as cv
import homeassistant.util.dt as dt_util
@ -19,7 +20,7 @@ from homeassistant.const import (
EVENT_HOMEASSISTANT_START)
from homeassistant.exceptions import TemplateError
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.event import track_state_change
from homeassistant.helpers.event import async_track_state_change
_LOGGER = logging.getLogger(__name__)
@ -94,8 +95,6 @@ class HistoryStatsSensor(Entity):
self, hass, entity_id, entity_state, start, end, duration,
sensor_type, name):
"""Initialize the HistoryStats sensor."""
self._hass = hass
self._entity_id = entity_id
self._entity_state = entity_state
self._duration = duration
@ -109,15 +108,19 @@ class HistoryStatsSensor(Entity):
self.value = None
self.count = None
@callback
def start_refresh(*args):
"""Register state tracking."""
@callback
def force_refresh(*args):
"""Force the component to refresh."""
self.schedule_update_ha_state(True)
self.async_schedule_update_ha_state(True)
# Update value when home assistant starts
hass.bus.listen_once(EVENT_HOMEASSISTANT_START, force_refresh)
force_refresh()
async_track_state_change(self.hass, self._entity_id, force_refresh)
# Update value when tracked entity changes its state
track_state_change(hass, entity_id, force_refresh)
# Delay first refresh to keep startup fast
hass.bus.listen_once(EVENT_HOMEASSISTANT_START, start_refresh)
@property
def name(self):