I need to have a "script node" in rule chain to return more than one message. I'm working on two different projects, and in both project I need this feature. For example because I need to invoke a dynamic number of API request. Using node-red I can obtain this effect by using the "split" node, but Thingsboard doesn't have any similar node.
I've found a "trick solution" that works in this manner:
- I create an array of messages as output of my "script node"
- the output is propagated to a set of N similar node, and each node will process only the i-th message of the array
It's obviously that this is not a good solution for a production environment, because it generates lots of useless messages and because there is a predefined maximum number of messages (=N) that can be processed at time
I'm using Thingsboard Community Edition
Any suggestion will be very appreciate :)
New version of Thingsboard(v3.2.1) have been release which includes support for
https://thingsboard.io/docs/reference/releases/#v321-january-26-2021
In my case I have aggregated telemetry which I need to split and create multiple entries with different timestamps. Works very well. you just need to return array from transformation script node.
Note: in the "test transformer function" screen for testing scripts I am not able to test properly and still get the error
wrong result type: ARRAYor similar.