JSON configuration persistency about wifi-presence HOT 3 CLOSED

When JSON configuration is published as retain, all works as expected (wifi-presence reads configuration from the retain on the MQTT broker, when OpenWrt starts).
So to keep this solution persistent, it is necessary to publish JSON with a retain parameter every time the MQTT broker is rebooted.
I have MQTT broker and Node-Red server outside the Home Assistant and I can write simple flow using NodeRed for this purpose.
Is this possible to do something similar within the Home Assistant (without the need to install NodeRed and MQTT broker there)?
I am just curious how to keep the solution consistent.
Is there an other approach how to achieve persistence?

from wifi-presence.

Thank you @PetrJakes for the report.

As you've described, the configuration in MQTT must be published with retain in order for it to persist. I will improve the README to make this more apparent.

It sounds as if your MQTT broker does not persist messages after restarts. Maybe there's a configuration setting to change this?

I use mosquitto MQTT broker and have these two lines in my config:

persistence true
persistence_location /mnt/mosquitto/data/

And since I run mosquitto as a Docker container, I mount the persistence_location to my local host:

docker run \
        --rm \
        -v /etc/mosquitto/mosquitto.conf:/mosquitto/config/mosquitto.conf \
        -v /mnt/mosquitto:/mnt/mosquitto \
        eclipse-mosquitto

from wifi-presence.

I have Mosquitto MQTT broker as well.
I have checked mosquitto.conf and persistence is set to the true by default, so no further action is required if the JSON configuration is published as retain.
Thank you for your help.

from wifi-presence.