Add attachement to process outside of task

Camunda 7 Topics Discussion & Questions
1

Is it possible (and if so how) to have a delegate add an attachment to the instance? I only found the according api in the taskService, and it requires a taskId …
Thanks
Jan

2

Hi Jan,

I think you can just set taskId to null in the API call. That said, the attachment API is not so awesome (CAM-5239, CAM-6562), so I personally would prefer a process variable.

Cheers,
Thorben

3

Thanks for the answer … we are setting up a solution where the user uploads a file in a multipart rest task-complete and we want to buffer it via camunda before asynchronously calling the document-management system.
First idea was using the taskService.createAttachment method on task-complete (custom controller). But if I understand you correctly, you are suggesting to store the byte[] as a processvariable directly? Wouldn’t that drastically increase the historic db tables (when on level full?)

4

Indeed, this gives you the regular variables history whereas with attachments once you delete them they are gone.

5

I will try my luck with attachements then … and if I do not like the api, you get a PR :wink:

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