I’ve recently bought Shelly plus 1, since it’s not yet supported by Shelly Binding I decided to integrate it using mqtt binding. The way it works is that shelly creates one topic <shelly name>/events/rpc and publishes all events into it, So for example when temperature changes, shelly publishes fol…

Alternatively you can also use js transformation to parse the json and check if a specific json path will exist.

The problem with the JS transformation approach is that it has to return something. And that something will replace the state of the Item linked to that channel, essentially wiping out the data stored in the Item when ever the Channel sees a message it doesn’t care about. The Regex transformation wi…

Thanks, that seems to do the trick (although it feels kinda clumsy matching json using regex). Now I have a followup question - I’m trying to use the second “NotifyEvent” message for trigger channel. So I set transformation to REGEX:(.*NotifyEvent.*)∩JSONPATH:$.params.events[0].event and I’d expect…

[image] m0rgoth: although it feels kinda clumsy matching json using regex Think of the regex as a filter. You are just checking the JSON to see if it’s one you care about before processing it. [image] m0rgoth: and I’d expect to see message in events.log about channel triggering single_pu…

[image] rlkoshak: Think of the regex as a filter. You are just checking the JSON to see if it’s one you care about before processing it. I get it, it’s just that regex is not a great tool to match json unless it’s a very simple case. Since regex can match nothing I don’t understand why jsonpa…

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rlkoshak (Rich Koshak) February 2, 2022, 7:02pm 2

See MQTT 2.5 M1+ How to implement the equivalent to MQTT1 REGEX filters