How to extract the attribute lineage from the json generated from dispacher?

[julianzlzhang]

I plan to integrate spine spark agent into our existing system, I have implemented the dispacher which could send the json to our system .
But the json is complicated and I only want to extract the final attribute lineage (column lineage/field lineage) which looks like:
T1.C1 -> TA.C1
T2.C1 -> TA.C1
T3.C1 -> TB.C1
Is there any sample code I can refer to?

[wajda]

https://opensource.bigusdatus.com/spline/rest/docs/producer.html#operation/executionPlanUsingPOST

The property attribute.childRefs contains references to expressions/attributes that the given attribute was created from. It forms a DAG structure.

[julianzlzhang]

Thanks. now we can achieve it by a small amount code.