Tombstones, "Move markers" & Change Messages / Descriptions

[matheus23]

Summary

A feature for attaching additional information to changes between revisions.

Problem / Need / Opportunity

• End users may care about being able to inspect the writes that happened, so they can audit them.
• Applications can use tombstones to detect when a file was key-rotated so they can raise a message to the user about being revoked read access.
• The WNFS conflict resolution algorithm may make use of move markers to improve expected outcome of concurrent changes when a directory was moved and modified at the same time.

Success Scenario

Each write in WNFS is annotated with additional information about it. The merge algorithm is improved in some cases. APIs to make use of the additional information exist and are used.

ETA: 2024-06-30