revisit the use of "urn:x-wmo" in metadata identifier

[amilan17]

@david-i-berry review:
Is this a valid URN?
The use of x- was deprecated in RFC 8141 - Uniform Resource Names (URNs) (ietf.org) .

[amilan17]

@tomkralidis @wmo-im/tt-wismd

[tomkralidis]

Options:

1. Remove urn:x- from the identifier notation and declare wmo:md:{centre_id}:{local_identifier} as the id notation
2. Formally register wmo as a namespace identifier with IETF as an RFC (example from DGIWG), hence moving from x-wmo to wmo
3. Other options?

[josusky]

I like the idea of WMO registering its stuff, not just URNs but also media types etc, but I do not know how likely it is to happen. Can we put into WIS 2.0 documents urn:wmo:md:{centre_id}:{local_identifier} expecting it to be "officialized" soon, or should we just define wmo:md:{centre_id}:{local_identifier} as a custom format that just by coincidence looks like URN?
In other words, I have slight preference for "Option 2", but have a feeling that we will need to content ourselves with the "Option 1".

[tomkralidis]

TT-WISMD 2024-02-12:

• go w/ Option 2
  • urn:wmo:md:{centre_id}:{local_identifier}

[tomkralidis]

Implemented in #185. Next step is to formally register the namespace id.

[tomkralidis]

2024-03-11:

• @amilan17 to review registration process

[tomkralidis]

TT-WISMD 2024-10-22:

• forward action @amilan17

[amilan17]

@tomkralidis Please review the form that will be submitted:

---

Please use the fast-track procedure for registering this namespace.

Appendix A. Registration Template

Namespace Identifier: wmo
Version: 1

Date: 2024-11-26

Registrant:
World Meteorological Organization
7bis, avenue de la Paix, Case postale No. 2300 ·
1211 Geneva Switzerland
https://wmo.int/

Registrant Contact:
Anna Milan
[email protected]

Purpose: The use of the WMO URN is defined in the WMO Core Metadata Profile standard to uniquely identify metadata records that describe datasets exchanged internationally via the WMO Information System.

Syntax: Not applicable (please let me know if need to add something here)

Assignment: Completely open

Security and Privacy: As far as I know, there are no issues with security and privacy.
Interoperability: As far as I know, there are no issues with interoperability.
Resolution: WMO will not be managing a resolution service.
Documentation:
Additional Information:

Revision Information:

---

[tomkralidis]

2024-11-26:

• update Resolution to 'Resolution: WMO does not plan to provide a resolution service at this time'
• ACTION: @amilan17 to submit to IETF