Changing QoS when publishing to Mosquitto through Weewx

[Rui Pinto]

Hello!!

I have a Davis Vantage Pro2 station and i'm using Weewx to publish data to an MQTT broker (Mosquitto).

But i would like to know if it's possible to change the QoS.

Best Regards.

[vince]

On Monday, September 2, 2019 at 9:11:01 AM UTC-7, Rui Pinto wrote:

I have a Davis Vantage Pro2 station and i'm using Weewx to publish data to an MQTT broker (Mosquitto).

But i would like to know if it's possible to change the QoS.

My reading of the mqtt extension v0.19 sources vs. some paho-mqtt examples says 'no', but if you wanted to hack on your extension a little you might try finding the two lines that say mc.publish and add qos=1 (or 2) and see if that works. (untested)

 

[Rui Pinto]

Thank you for responding!!

https://github.com/weewx/weewx/wiki/mqtt 

The solution couldn't just be set the option retain to True?

Best Regards

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[vince]

On Tuesday, September 3, 2019 at 3:02:01 AM UTC-7, Rui Pinto wrote:

https://github.com/weewx/weewx/wiki/mqtt 

The solution couldn't just be set the option retain to True?

You asked specifically about QOS setting.  The extension doesn't seem to support setting that from what I could tell, but I gave you which 'two' lines you need to edit to see if it can be easily added.

I'm not sure retain is the same thing according to https://www.hivemq.com/blog/mqtt-essentials-part-8-retained-messages/ but you could always try it and see if you get the behavior you want.   I just run the defaults at home which works ok for me.