Session Date/Time: 20 Apr 2022 14:00

CBOR

Summary

This CBOR Working Group meeting was sparsely attended, prompting a focus on document status and next steps. Key discussions centered on initiating a Working Group Last Call for the OPAQUE document, the delayed progress and specific technical challenges for CDDL 2.0 (particularly the need for an "annotation format"), and the status of the Time Tag document. The meeting also addressed the record-proposal and potential uses of File Magic, along with scheduling considerations for future CBOR meetings.

Key Discussion Points

Low Attendance: The meeting proceeded with limited participants (chairs, Carsten, and Ira) due to absences, including Michael's.
OPAQUE Document: The latest revision of the OPAQUE document was deemed ready for a Working Group Last Call (WGLC). The chair, acting as shepherd, stated they would initiate the WGLC immediately after the meeting.
CDDL 2.0 Progress: Development of CDDL 2.0 has been significantly delayed from its original schedule (Christmas last year). A primary blocker for Carsten's implementation is the lack of an "annotation format" for validated documents, akin to a "post-schema validation instance" in XML. Input was requested from the working group on what should be included in such an annotation format. The concept of "sliders" for various CDDL 2.0 features was also mentioned, with a suggestion to consolidate these ideas.
Time Tag Document: This document is also progressing, with Carsten planning to work on it this week. A Data Tracker bug was noted where expired working group documents (like Time Tag) do not show up properly. The document requires resubmission soon, as the SEDATE working group is converging on related work.
record-proposal: Chris's current proposal for record needs further review from the working group to determine its readiness. There was a discussion about the need for Chris to register the proposed tags.
File Magic: There is interest in applying the general concept of File Magic (indicating the type of unstructured data) within ACE work, potentially without its other associated tags. No specific text for this integration exists yet.
T2TLG Interim Meeting Conflict: A conflict was noted with an upcoming Thing-to-Thing Research Group (T2TLG) interim meeting focusing on digital twins. It was decided that CBOR Working Group meetings would not be paused or cancelled for that week and would continue as scheduled.
Future CBOR Meeting Management: To manage meeting time effectively, it was suggested that an earlier reminder and call for agenda items be sent out (e.g., Thursday or Friday before the meeting). If no agenda items are submitted by the preceding Tuesday, the scheduled Wednesday meeting could be cancelled.

Decisions and Action Items

Decision: The OPAQUE document will enter Working Group Last Call (WGLC).
- Action Item: The chair (shepherd) will initiate the OPAQUE WGLC immediately after the call.
- Action Item: Carsten will provide a review of the OPAQUE document.
Decision: CBOR Working Group meetings will continue as regularly scheduled, even during weeks with other IETF-related meetings like the T2TLG interim.
Action Item: A chair will make the request for reviews of Chris's record-proposal more visible on the working group mailing list.
Action Item: A chair will send the minute details of the File Magic discussion to Carsten for further processing.
Action Item: A chair will issue earlier reminders and calls for agenda items for upcoming CBOR meetings (e.g., by the Thursday or Friday prior to the meeting week).
Decision: Future CBOR meetings may be cancelled if no agenda items are submitted by the Tuesday preceding the scheduled meeting time.

Next Steps

Initiate and manage the Working Group Last Call for the OPAQUE document.
Address the "annotation format" challenge for CDDL 2.0 and gather input from the working group.
Resubmit the Time Tag document, incorporating updates and addressing the Data Tracker issue.
Gather and consolidate reviews for Chris's record-proposal.
Explore the applicability of File Magic concepts within ACE work.
Implement new procedures for calling for agenda items and potentially cancelling CBOR meetings to optimize meeting time.