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wmo-im / wis2-notification-message

WIS 2.0 MQP message to notify users of availability of new data
https://wmo-im.github.io/wis2-notification-message
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WNM Identifiers | UUID RFC 4122 superseeded by RFC 9562 #136

Open unep-gwdc opened 2 months ago

unep-gwdc commented 2 months ago

The WMN specification requires message identifiers to be UUIDs conforming to RFC 4122 (section 1.4, https://github.com/wmo-im/wis2-notification-message/blob/main/standard/sections/clause_7_normative_text.adoc) . This RFC has been superseeded by RFC 9562 recently including new UUID variants such as time-ordered UUIDv7.

Changing the requirement to RFC 9562 would allow data providers to use these new UUID versions making the specification more future proof but other introduced UUIDs like Nill UUID and Max UUID should probably excluded to ensure uniqueness.

josusky commented 1 week ago

As far as I see, the requirement is:

The id property SHALL be a Universally Unique Identifier (UUID).

It is true that the clause 1.4 Identifier then mentions the RFC 4122. But that can be relaxed. We (the TT-WISMD) team do not have any special preference for this type of UUID or other type, as long as it is unique. So you may even use Nill UUID (00000000-0000-0000-0000-000000000000) as long as you can guarantee that no one is ever going to use it again :-)