Last time a sensor is updated in frontend (through AppDaemon)

Third party integrations AppDaemon
21

My brain is hurting :confused:

self.log("Plain: {}".format(self.datetime()))
self.log("utc: {}".format(self.datetime().replace(tzinfo=timezone.utc)))
self.log("last_changed: {}".format(self.get_state(entity = sensor,attribute="last_changed")))

2018-04-21 08:47:00.009016 INFO bathroom mls: Plain: 2018-04-21 08:47:00
2018-04-21 08:47:00.010194 INFO bathroom mls: utc: 2018-04-21 08:47:00+00:00
2018-04-21 08:47:00.010914 INFO bathroom mls: last_changed: 2018-04-21T06:36:56.108860+00:00
22

mine is always hurting. :wink:
as i see it then you didnt configure your device right.
the time from your device must be set to local time.

23

I’m not sure what you mean. My linux box has timezone Europe/Amsterdam. I think it’s setup right? If I type ‘date’ I get the localtime not UTC.

      Local time: Sat 2018-04-21 14:05:21 CEST
  Universal time: Sat 2018-04-21 12:05:21 UTC
        RTC time: Sat 2018-04-21 12:05:21
       Time zone: Europe/Amsterdam (CEST, +0200)
 Network time on: yes
NTP synchronized: yes
 RTC in local TZ: no
24 
{{utcnow() - states.binary_sensor.sensor_5.last_changed}}
{{now() - states.binary_sensor.sensor_5.last_changed}}

{{utcnow()}}
{{now()}}

outputs:

0:00:43.125920
0:00:43.126023

2018-04-21 12:41:02.689752+00:00
2018-04-21 14:41:02.689763+02:00
25

yeah sorry.
i always get confused also with those things.

i did some testing and this works for me: ( after i installed “pip3 install python-dateutil”)

import appdaemon.plugins.hass.hassapi as hass
import datetime
from dateutil import tz


class test(hass.Hass):

    def initialize(self):
        tzlocal = tz.tzoffset('UTC', 7200)
        utcnow = datetime.datetime.utcnow().replace(tzinfo=tz.tzutc())
        now = utcnow.astimezone(tzlocal)
        lastchanged = self.convert_utc(self.get_state(entity = "sensor.rene",attribute="last_changed"))
        lastchangedlocal = lastchanged.astimezone(tzlocal)
        self.log("Plain: {}".format(self.datetime()))
        self.log("now: {}".format(now))
        self.log("utc: {}".format(utcnow))
        self.log("last_changed: {}".format(self.get_state(entity = "sensor.rene",attribute="last_changed")))
        self.log("last changed local: {}".format(lastchangedlocal))
26

I’m going to give that a try… Don’t you agree it’s a lot of boilerplate just to get the time-diff of a last_changed? I would very much prefer this to be a build in util in AppDaemon :slight_smile:

27

the problem isnt AD but HA. :wink:

last changed and last updated where always buggy and troublesome.

but you can create your own general function like:

def make_local(self,datestring):
        tzlocal = tz.tzoffset('UTC', 7200)
        lastchanged = self.convert_utc(datestring)
        lastchangedlocal = lastchanged.astimezone(tzlocal)
        return lastchangedlocal

then you can use:
self.make_local((self.get_state(entity = “sensor.rene”,attribute=“last_changed”))

or a bit more specific:

def get_local_last_change(self,entity):
        tzlocal = tz.tzoffset('UTC', 7200)
        lastchanged = self.convert_utc(self.get_state(entity = entity,attribute="last_changed"))
        lastchangedlocal = lastchanged.astimezone(tzlocal)
        return lastchangedlocal