[How To] Is it possible to set success_action_redirect for an upload_part using presigned_url ?

[Neah-Ko]

Hello,
I'm designing some file management API that serves presigned_url to clients for direct file upload.

It is currently done via create_presigned_post which allows setting Fields and Conditions in order to pass a callback and get notified on upload success and that is working without issue.

Now I'm moving on to support chunked upload for large files, talking about 10s of GB if not 100s.

Following examples and the documentation I thought about the following process:

1. Client sends file upload request, passing size information
2. If size exceeds 100MB -> create_multipart_upload +> return 1 upload_part presigned_url for each expected chunk
3. On success for each part, receive a callback notification containing an etag and store it in my database
4. Upon completion of all parts, call complete_multipart_upload with all etags

I am blocked at this 3rd step, as generate_presigned_url only accepts the method name, its parameters and an expiration time.

Is there a way to be notified back when a part gets uploaded in a multipart upload ?

Best,

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.