[BUG] Thumbnail files with same name overwrite each other

[de-ich]

Describe the bug
If two AASes are uploaded that specifcy a thumbnail with the same name (e.g. "thumbnail.jpg") but different content, these seem overwrite each other so that the thumbnail of the AAS that was uploaded last "wins" and is shown for both AASes.

To Reproduce
Steps to reproduce the behavior:

1. Create two AASes with different thumbnail images that have the same name (e.g. "thumbnail.jpg").
2. Upload the first AAS to the BaSyx environment.
3. Note that the correct thumbnail is stored/displayed, e.g. by using the BaSyx GUI or the Rest API.
4. Upload the second AAS to the BaSyx environment.
5. Note that the correct thumbnail is stored/displayed, e.g. by using the BaSyx GUI or the Rest API.
6. Note that the thumbnail of the first AAS has changed and now also displays the thumbnail of the first AAS.

Expected behavior
Thumbnail files should not override each other and be stored separately.

BaSyx (please complete the following information):
eclipsebasyx/aas-environment:2.0.0-milestone-04

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
I did not check if this problem only occurs for thumbnail or also for other files that are stored in an AAS.

[zhangzai123]

Hi @de-ich, thank you for pointing out the problem. We can reproduce it with MongoDB backend. We will create a PR to fix this problem.