question Re: ExecuteScript - flowFile with new attributes not sent to next processor in Support Questions

ExecuteScript - flowFile with new attributes not sent to next processor

chrizonline — Tue, 08 Nov 2022 09:37:28 GMT

I have a GenerateFlowFile processor that sends a flowFile to the ExecuteScript processor. In the ExecuteScript processor, I added a new attribute and value to the incoming flowFIle. But this updated flowFIle is not output to the next processor

Incoming FlowFile content from GenerateFlowFile

{'name':'myName'}

ExecuteScript script body

Output to next processor

{'name':'myName'}

Am I missing something??

Re: ExecuteScript - flowFile with new attributes not sent to next processor

Faerballert — Tue, 08 Nov 2022 10:00:41 GMT

Hello,

in your script body you dont manipulate the content.

You add an Attribute to your flowfile (which works 😀)

Maybe you can have a look at https://community.cloudera.com/t5/Community-Articles/ExecuteScript-Cookbook-part-2/ta-p/249018/page/2

But in case you don´t need to do it via ExecuteScript Processor, you could use JoltTransformJSON Processor.

On conficuration you can set for the property Jolt Specification following value:

[ { "operation": "default", "spec": { "gender": "male" } } ]

After that your JSON should be extended with your key-value-pair.

Greetings

Re: ExecuteScript - flowFile with new attributes not sent to next processor

chrizonline — Wed, 09 Nov 2022 03:38:43 GMT

Hi,

Thank you for pointing that out. It has certaintly speed up my development.

This is a short snippet to my solution:

Something to point out for those using javascript. If your using GenerateFlowFile processor to generate sample JSON content, the JSON content in Custom Text must use double quotes ( " ), not single quotes ( ' ). I spent an hour debugging why my JSON.parse(text) didn't work.

Custom Text

{'name':'myName'}

It should be

{"name":"myName"}