WACZ futurism: mimetype and Pronom ID

[DiegoPino]

Good morning!

Just an idea. As early adapters of the WACZ format we were thinking that it could be nice in the future to have a specific way we should identify WACZ (before any processing). Requesting a new mimetype to IANA seems a bit out of scope (or not?) but thinking of the data package inheritance that happens in WACZ and based on the extra arguments we we can pass to a mimetype

See : https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types and see https://github.com/frictionlessdata/specs/tree/master/data-package where datapackages' media type is application/vnd.datapackage+json seems to be for the JSON? but not sure about the gzipped version of the full package? (I may be lacking coffee here)

application/vnd.datapackage+json;parameter=value

or

application/zip;parameter=value?

application/vnd.datapackage+zip or +gzip?

parameter = content? value = webarchive?

Too liberal?

Anyhow. Just ideas. On our side we can start by using application/vnd.datapackage+gzip

Pronom goes a bit further by registering file content characteristics. Still important for Digital preservation to have at least some discussion, maybe someone from that realm could give us a hint

Thanks

[edsu]

Since effort is now underway to make WACZ into more of a standard I think working towards an IETF media type might actually be a good idea. Registering a media type doesn't require the standard be developed at IETF.

[ikreymer]

Pronom also came up today in another conversation, not entirely sure what is needed for that, but happy to explore if there is interest. Looks like submission form is here: https://www.nationalarchives.gov.uk/PRONOM/submit.htm

[DiegoPino]

I can help there. But would be great to bring frinctionless data package into the discussion too since pronom uses actually file signature for detection and in a zip that is hard to make non generic https://www.nationalarchives.gov.uk/information-management/manage-information/preserving-digital-records/droid/

On Thu, Dec 2, 2021 at 7:11 PM Ilya Kreymer @.***> wrote:

Pronom also came up today in another conversation, not entirely sure what is needed for that, but happy to explore if there is interest. Looks like submission form is here: https://www.nationalarchives.gov.uk/PRONOM/submit.htm

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[tballison]

We're adding wacz detection (maybe parsing?) over on Apache Tika now. As a temporary placeholder at least, is application/wacz appropriate ?

https://issues.apache.org/jira/browse/TIKA-3696