jSon Tranformation inside of MQTT configuration 2.5

[rlkoshak (Rich Koshak)]

@rlkoshak

Just make sure to build an expression that matches the full string and put the binary sequence in parens.

That REGEX does not match the whole string and the part you want is not in the capture group. Whether or not you want a more generic REGEX, those are the requirements for using REGEX transformation in openHAB.

@mvo

Also, how can i use the REGEX with JSON in the paperUI thing configuration?

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

Problem In the MQTT1 binding there was a feature that let us filter messages published to a given topic and only pass those that match a given REGEX to the transformation and/or on to the Item. This was useful to handle devices that publish messages to a single well known topic for all their devices. For example, the official firmware from the vendor of Shelly devices have a request/response protocol over MQTT to get meta data about the devices (IP address, MAC address, firmware version, whethe…