Sending MQTT Command with script

Setup, Configuration and Use Scripts & Rules
1

Hi,

I have a seamingly basic question:

How can I publish a MQTT Message with a script?`

The only thing I found was this:
var actions = getActions(“mqtt”,“mqtt:broker:MQTTBroker”)
actions.publishMQTT(“/Test/HelloWorld”)

My MQTT Brokers UID is “mqtt:broker:MQTTBroker”. All other mqtt stuff I did so far with openhab works just fine. Why isnt this script working? Is there another solution?

Thanks in advance!

2

Did you forget the payload? Is the topic correct? All the mqtt topics I’ve come across so far don’t start with a slash.

3

I assume you are using some 3rd part MQTT client to monitor Broker.

Try

val mqttActions = getActions("mqtt","mqtt:broker:MQTTBroker")
mqttActions.publishMQTT("mytopic","myvalue", true)

Then you should see myvalue in mytopic topic.

4

First of all thanks for the answers.
I can indeed monitor all messages with a 3rd party MQTT Client.

Unfortunately your solution didnt work. I put the code in a script and treid to run it. No message was sent to the mqtt network.

Any ideas why it doesnt work?

5

Not without more details.

How did you try to run it? Which language? UI or text files? Post the rule. Anything in the logs?

6

It turns ou that I had to choose RuleDSL instead of javascript. Now it works!
Thank you