Get Values from an API

[caiovernaglia]

Hello there.

I have a few equipments that I wanna collect some data through API calling. But there's a catch.
The process to collect is that:
1. call a endpoint for login (http://host/login.fcgi) and parse username and password on Body formatted as JSON

{
     "login": "username,
     "password": "password"
}

The response of this call is a session token, that i have to use on all others call.

{
     "session":"API_TOKEN"
}

2. call the objetc endpoint with the session token as a Query Parameter (http://host/load_objetcs.fcgi?session="API_TOKEN". The object that i want is parsed in Body as JSON


Till there, no problem at all, i can setup a macro (ie.: {$API_TOKEN}) and use that on all others calls. But this session has a fixed "log out" time. Every 30 minutes i've to redo the login and retrieve another Token.

I was woundering if i can set up the macro with an item value, this way i can call the login endpoint every 15m and use it's value to set a macro. Then set up others itens that will use this macro as a Query Parameter.


The Endpoints that i have are:

Login: host/login.fcgi

Load Objects: host/load_objects.fcgi?session="API_TOKEN"

and others but with the same logic


Any ideas on how I can acomplish that?

Thanks!

[cyber]

Unfortunately you cannot use item value as macro value directly...
You can have that item value as macro value only, if you have some script, which it updates macro value over API. You can do it in script type item at once... get token and update macro over api. Or use JS preprocessing to do your API call...