Trigger, when any Thing changed it status

Setup, Configuration and Use Scripts & Rules
, , ,
1

Hey, is there a possibility to use a trigger which fires, when any Thing change its status (e.g. from ONLINE to OFFLINE or anything else)

Like the solution for items in groups ( when Member of Groupxy changed then …)

And maybe there is also something like triggeringThing (similary to triggeringItem)

I know that there is a solution for specific / defined Things, but i want to check all Things that are in Openhab.

Hope you got what i mean. Thanks.

2

The short answer is no, you cannot trigger a rule on any Thing changing status. You have to specify the Things one by one.

I’ve published Thing Status Reporting [3.2.0;3.4.9] which gets around this by polling the Thing Registry for Things that match a configured state (e.g. OFFLINE) and then calling a separate rule with the list of this Things that are offline. From there you can process the list, send alerts or what ever you want.

It’s a rule template and can be installed from the Marketplace under Settings → Automation.

See Rules - Basic | openHAB for more on rule templates.

3

There is a event.thing variable available, but not for DSL rules

4

I haven’t tested this but in theory (famous last words), this should work in jruby.

rule 'Execute rule when any thing is changed' do
   changed things
   run { |event| logger.info("Thing #{event.uid} changed to #{event.status}") }
end

I can’t speak to its efficiency (you are create a trigger for this rule for each thing in your system). Also, it wont catch when new things are added as it is just a static capture of the things known to openhab when the rule is parsed, you would have to rerun the rule to capture new things added.