Camunda API to make bulk operations using rest

Camunda 7 Topics Discussion & Questions
1

I am working with Camudna Rest API to evaluate some decision which is integrated with a BPMN and its working with following API

I am using following APIs to start BPMN and analysing its result

http://localhost:8080/engine-rest/process-definition/key/myprocess/start

http://localhost:8080/engine-rest/variable-instance?executionIdIn=183a1df6-42f6-11e8-af85-a41f7279f6d8

Now i need to start and evaluated bulk of records (available in CSV) and i am doing the same by reading csv data using java and itearting over a loop and calling same the above APIs to process all recorsd in the CSV>

Is there any Camunda API available to process bulk operations for the above both cases or please suggest me a best practice for the same.

Thanks in advance :slight_smile:

2

@jamsheer-thottathil can you have your Primary process load the CSV file and generate sub-process instances for each record in the CSV? Each Sub-process instance would process the record.

diagram_1
diagram_1899Ă—212 5.91 KB

1 Like
3

How to load CSV to camunda, Is there any option to load csv to one process?

Thank You

4

@jamsheer-thottathil I am guessing you will have to code the “CSV loading” part yourself. If the CSV files concerned are accessible to the Camunda process engine then this should be a straight foreward matter.

In SephenOTT’s sample BMPN above, you could define the [Process row] step as a service task which executes the code (script/Java) to load the CSV file(s) and process it(them).

Take a look at:
The Camunda BPM examples

For an example using Java:
https://github.com/camunda/camunda-bpm-examples/tree/master/servicetask/service-invocation-synchronous

5

@jamsheer-thottathil take a look at:

CSV File writer: https://github.com/DigitalState/camunda-variations/tree/master/csv-file-writer

It has a example pof using Javascript to append a csv file. You can use the same API to read a CSV file and process your rows.

6