Commandline sensor with Json response and multiple attriubtes

@dm82m wrote:

Hey guys,

Situation: I have a heating system that talks with the cloud portal they provide. There are no API/Rest/… services provided; only an ugly UI. I wrote a python script with mechanicalsoup to access this portal; read some values and return them as json. This result looks like:

{"Heizung": {"Aussentemperatur_Aktuell": "4,2 \u00b0C", "Aussentemperatur_Minimum": "2,5 \u00b0C", "Aussentemperatur_Maximum": "17 \u00b0C", "Warmwassertemperatur_Aktuell": "55,5 \u00b0C", "Vorlauftemperatur_Aktuell_HZK1": "29,7 \u00b0C", "Istleistung_Aktuell_WE0": "0 %", "Kesseltemperatur_Aktuell_WE0": "45,1 \u00b0C", "Anlagendruck_VPT_Aktuell_WE0": "1,9 bar", "Weichentemperatur_Aktuell": "53,2 \u00b0C"}}

My main goal now would be to integrate these values into Home Assistant and for that I created the following configuration entry:

sensor
  - platform: command_line
    name: heating
    value_template: '{{ value_json["Heizung"] }}'
    json_attributes:
      - Aussentemperatur_Aktuell
      - Aussentemperatur_Minimum
      - Aussentemperatur_Maximum
      - Warmwassertemperatur_Aktuell
      - Vorlauftemperatur_Aktuell_HZK1
      - Istleistung_Aktuell_WE0
      - Kesseltemperatur_Aktuell_WE0
      - Anlagendruck_VPT_Aktuell_WE0
      - Weichentemperatur_Aktuell
    command: 'python3 /home/homeassistant/.homeassistant/scripts/wem_status.py'
    scan_interval: 600

The script is executed, returns the json but what I get in Home assistant is:

Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/entity_platform.py", line 408, in _async_add_entity
    await entity.async_update_ha_state()
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/entity.py", line 275, in async_update_ha_state
    self._async_write_ha_state()
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/entity.py", line 394, in _async_write_ha_state
    self.entity_id, state, attr, self.force_update, self._context
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/core.py", line 988, in async_set
    state = State(entity_id, new_state, attributes, last_changed, None, context)
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/core.py", line 733, in __init__
    ).format(entity_id)
homeassistant.exceptions.InvalidStateError: Invalid state encountered for entity id: sensor.heating. State max length is 255 characters.

I hope that someone could point me into the right direction.

Thanks!
Dirk

Posts: 6

Participants: 2

Read full topic