OpenHAB3 / Thing Status / How to extract the thing status and work with it on items

[ringbuchblock]

@rlkoshak

So why not just use the Network binding to ping it and if it goes offline you’ll have a nice switch to tell you that it’s offline.

If you are using MQTT integration, you could subscribe to the LWT topic and let the MQTT broker tell you when the devices go offline. You could also configure the MQTT Thing itself to subscribe to the LWT topic and set everything to UNDEF when it goes offline.

Yes, I know that I could work with such things.

But the thing is that the information of the “things’ statuses” is already there (I have a nice overview when I look at the “Administration >> Settings >> Things” ) and (if possible) I just want to work with that.

@rlkoshak

As I said, you want the online status of the end device, not the Thing.

In my case the thing is equal to the actual device. So I am very much fine with getting the thing’s status. If the thing’s status is weird / unexpected, I need to take a (personal) look at the device eventually anyways.

@rlkoshak

But if you insist of using the Thing status, as is talked about in those threads your choices are:

• run a rule to query and parse the JSON from the REST API to get the Thing status for all your Things periodically, you might be able to get access to Things more directly in JavaScript/Python/Rules DSL without going through the API

This might be a way to go.

@rlkoshak

trigger a rule when Things change their status to OFFLINE, but you need to manually add each Thing as a separate trigger to the rule

I’d rather don’t wanna do that. If possible I “just” want to set OH up and once I add new things, items etc. most of the other “stuff” is just there already.

@rlkoshak

[…] for example dynamically creating the rule with all the triggers based on the query for all Things.

This sounds very interesting!
Could you maybe point me to some examples or more information on that?