Creating a group to count how many offline devices there are

1

Hi everyone,

I was able to make a group to count how many items are ON of OPEN however is there a way i can do the same with Things to count how many devices in the group are OFFLINE?

I tried this but it did not yield any non zero results even if group items are offline.

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2

What is the type of the members of this Group? Are their state exactly OFFLINE? The count expression probably should not have quotes. It uses a String comparison no matter the type of the Item.

3

Thanks for the reply… i think this is where im running into an issue… how do i get the Thing itself in the group. Can i even do that? The Thing is OFFLINE but the ITEM under it just says NULL or the last value.

4

You don’t. You can’t do that. At least without a rule you can’t. A Group is a group of Items. Things are not Items.

There is a rule on the marketplace that will call a rule you write when a Thing goes OFFLINE. Thing Status Reporting [4.0.0.0;4.9.9.9]

You can use that to update an Item, update a bunch of Items, keep a count, restart a binding, or what ever it is you want to do in response to a Thing going OFFLINE.

Given that Things are really only something that an admin would care about, you also have the option to search for “OFFLINE” on the Settings → Things page and narrow the list down to those that are OFFLINE.

You can get a list of all the Things that are offline in a rule, In JS Scripting it’s as simple as:

var notOnline = things.getThings().filter( t => t.status != "ONLINE");
5

Makes sense! Thank you for that rule. Ill switch over to that.

6

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