Automatically add numbered macro for every discovered item?

[Tenou]

TLDR: How to have a discovery rule create a numbered Macro for every discovered item so you can manually define a custom alias for every finding?


Hey there,

I'll say in advance that I'm pretty new to discovered items and have only understood the basics yet (at least I think so).

I'm using LLD to find connected 1wire devices (DS18B20 probes) and automatically create an item for each one checking the current temperature.

My key for that is

system.run[find /sys/bus/w1/devices/* -maxdepth 0 -type l | sed '$d']

Then a bit of preprocessing is done using javascript to transform the bash output to json:

var lld = [];
var lines = value.split("\n");
var lines_num = lines.length;
for (i = 0; i < lines_num; i++)
{
var row = {};
row["{#DEVICE}"] = lines[i]
lld.push(row);
}
return JSON.stringify(lld);

My item protoype is then using this key to extract the temperature reading:

system.run[cat {#DEVICE}/w1_slave | tail -n +2 | cut -d= -f2-]

and uses a custom multiplier in the preprocessing section to give out a reading in °C.

So far, so good. However, I'd like to have a friendly alias in the item title, which you can define as macro, so the current name won't give out the probe's path & name but rather a manually defined name, like the location of the probe.

Currently I'm using this as item name:

Temperature reading of probe "{#DEVICE}"

I'd rather have an macro created for every discovered item, like {$PROBE01}, {$PROBE02} and so on, which would, by default, equal {#DEVICE} but could be changed manually to another name like "Aisle 3, Rack 1, Inlet" or something like that.

[Tenou]

Solved, using context-specific macros.