New MQTT 2.4 Binding

Add-ons Bindings
1

Hi,

I’m trying to configure the new MQTT driver, but can’t find any documentation for it.

Do you know where I can find it?

Thanks,
MC

2

I have no idea whether this is completely up-to-date or not, but here you go:

3

You will get a good overview if you watch the videos from the last openHAB event in Ludwigsburg. (on Youtube)

4

Thanks for the responses.

I’m trying to send all the events to an MQTT topic. Is this possible with the new binding?

So far, I’m able to send a message using mosquito_pub and see the message in openhab String item, but haven’t been able to use the trigger channel from the MQTTBroker thing.

5

Can you be more precise? I found some videos from old MQTT 1.x binding

6

This should be the right one

1 Like
7

Thanks for your quick response, but I’m working with 2.4 version.

8

A quick search here for “MQTT 2.4” turns up several threads specific to your question. Maybe repost your question to the thread you think is most appropriate for your issue?

9

thanks. I missed that search as I looked for MQTT only.

10

No problem. Hope you get a resolution to your problem.

11

Basically you are trying to use the mqtt event-bus integration that is available with MQTTv1 in the v2 binding

See there:

12

Can this topic be solved? :slight_smile:

MQTTv2 allows to publish all events with a self written rule only at the moment.
What is missing is a new rule engine template that does this job and simulates the old mqtt-eventbus. But we are not yet there.

Cheers, David

1 Like
13

Can you give an example, please?
I have not seen any MQTTv2 rule examples, yet

1 Like
14

I cannot. I haven’t written a javascript rule yet and have no idea how to interact with a new rule engine action from within DSL rules. But the idea is simple:

When
  item_change
Do
  mqtt.publish("my/topic/"+item.getUID(), item.getState().toString())
1 Like
15

But the MQTT action remains the same after MQTTv2 is installed and V1 removed? In the DSL

16

No, as I said, I have no idea how to access a new-rule-engine action. The binding id is “mqtt” and the action-id is “publish”, that is all I know.

17

Not in the new rule engine. In the DSL, does the action remain the same?

18

I would assume you cannot use the MQTT v2 action in the DSL rules.

19

Well, I want to clear up the assumption, and understand how to use the equivalent of the V1 Action with the V2 binding.

20

I could live with the fact that “new” actions would only be accessible via “new” javascript/jython rules. But Kai said something along the lines of that new actions will be available for DSL rules as well, personally I just don’t know how.