Changing GCS/S3 prefix with pre-create.

[mlnj]

Question
Is it possible to decide a prefix for a file on the pre-create hook?

Using Uppy.js with tusd docker containers to upload to Google Storage or S3.
Trying to save files into a structure like:

<bucket>/<uuid>/<file>

Setup details
Please provide following details, if applicable to your situation:

Operating System: Linux
Used tusd version: latest docker (sha256:8fd45989c674d3cb919c1bcfc7f3096bf98c14684885df546166ea04aae6b0ce)
Used tusd data storage: Ggoogle Storage
Used tusd configuration: [gcs-bucket test_bucket, -hooks-enabled-events]
Used tus client library: uppy.js

[Acconut]

No, this is unfortunately currently not possible. The prefix (or destination path) cannot be influenced by the pre-create hook (for any kind of storage inside tusd). We are considering adding such a functionality in the future since some people ask for it, but we have no plans for that in the near future.

[Akkarine]

It would be useful for cases, when you serve uploaded files not through tusd, but with S3 with CDN. It also reslove #574.
And it would be greate to combine with #333.

[Acconut]

I can see how this would be useful but we still do not have any plans to implement this on our own. We are open to PRs but this is not priority. If you want a per-upload prefix for the objects on GCS/S3, you can rename/move the object on the cloud storage once the upload is completed.