Fix stuck values

[andreondra]

Sometimes the integration would just stop updating the data and show only the last value (not Unavailable, which means the integration got stuck somehow).

[andreondra]

This happens also in the latest version (2023.1.4).

[andreondra]

It looks like it could be related to the Scheduler component (https://github.com/nielsfaber/scheduler-component). Will investigate.

[andreondra]

It happened again. We should add logging to the data update coordinator and fix any bugs if needed. Weird thing is that it started to happen after a 2022.10 update, before that update it worked reliably.

[andreondra]

Note: it could probably happen when the comm script returns empty values (connection error) — because no exception is raised, nothing shows up in the logs.

[mathieupotier]

Hi @andreondra , got this error in logs, maybe related :

2023-02-12 15:27:30.101 ERROR (MainThread) [frontend.js.latest.202302020] :0:0 Script error.
2023-02-12 15:27:54.910 ERROR (MainThread) [custom_components.sermatec_inverter.sensor] Error fetching Sermatec data: Can't retrieve working parameters.
2023-02-12 15:27:54.914 ERROR (MainThread) [homeassistant.components.sensor] sermatec_inverter: Error on device update!
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 507, in _async_add_entity
    await entity.async_device_update(warning=False)
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 739, in async_device_update
    await task
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 428, in async_update
    await self.coordinator.async_request_refresh()
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 189, in async_request_refresh
    await self._debounced_refresh.async_call()
  File "/usr/src/homeassistant/homeassistant/helpers/debounce.py", line 82, in async_call
    await task
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 215, in async_refresh
    await self._async_refresh(log_failures=True)
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 330, in _async_refresh
    self.async_update_listeners()
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 135, in async_update_listeners
    update_callback()
  File "/config/custom_components/sermatec_inverter/sensor.py", line 525, in _handle_coordinator_update
    self._attr_native_value = self.coordinator.data[self.dict_key]
TypeError: 'NoneType' object is not subscriptable

When getting an error from the inverter: trying to update an entity with bad type, seems that make the plugin to crash ...

[gertz22]

Hello, same issue and log as mathieupotier, system aslo get too much log and can couse run out of free space at home assistant which couse serious crash of server.

[andreondra]

As with the other issue, this should be resolved in the latest version.