Asset file path

[emmanuelmathot]

Context

When downloading assets locally to run some software (e.g. ESA SNAP on S2), it expects the file organized as originally in the SAFE manifest. Assets may be distributed in the cloud and have lost this organizational information in its own url.

Proposed Solution

• file:path field to indicate a relative path that may be used to organize files as expected.

[m-mohr]

Hmm, I'm thinking whether alignment with radiantearth/stac-spec#956 would help, specifically what I call archive:href there?

[emmanuelmathot]

I see the point with the discussion. What is an archive? Only a compressed files container or we consider the a whole set of files?
My proposal here is mainly focused on the file itself and where it stands in a file system.

[m-mohr]

Sorry for the slow response.

Usually a container for files, e.g. ZIP, TAR, etc. In them, there's usually also a pre-defined path where to store the file after extraction. I'd also be fine to just re-use file:path in archive if that's the best solution, but it should be unambiguous. It feels like they serve the same or a very similar purpose, but maybe they are not?

[emmanuelmathot]

It serves the same purpose with a scope larger than only archive files.

[m-mohr]

So I guess then we should use file:path and define it in a way that it works for both use cases and then archive can re-use this.

[emmanuelmathot]

So I guess then we should use file:path and define it in a way that it works for both use cases and then archive can re-use this.

Agreed

[emmanuelmathot]

@m-mohr any progress on this PR? Is the file:path definition good for being used in the archive extension as well?

[m-mohr]

Oh, I thought you would propose a more generic description and I guess you thought I'd do it? Sorry about that.

Unfortunately, I'm on vacation soon so I could only propose something after that, but I think the name and schema are fine, we just need to tweak the description a bit. So you can start using it and we'll just merge and release it later. I can probably finish this in early October together with the archive extension.

[emmanuelmathot]

@m-mohr is it ok with local_path ?