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  4. Trigger rule on empty MQTT message?

Trigger rule on empty MQTT message?

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  • S Offline
    S Offline
    Samuel235
    Hardware Contributor
    wrote on last edited by
    #1

    Is anyone aware of any way at all to trigger a rule to execute if openHAB receives a blank message via MQTT?

    At the moment the below code works but only if the message contained a value, i need it to trigger if the message is blank.

    rule "solve"
            when
                    Item monitor1 received update
            then
                    V_VAR1send.postUpdate(V_VAR1.state)
    end
    

    I have a open question on the openHAB forum but wondered if anyone around here has done something similar?

    MySensors 2.1.1
    Controller - OpenHAB (Virtual Machine)
    Gateway - Arduino Mega MQTT Gateway W5100

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