Struct HighWaterMarks 

pub struct HighWaterMarks { /* private fields */ }

Persisted high-water marks, one per release line, stored under the varve root (NOT inside the core — the core holds evidence, this is client state).

Implementations

impl HighWaterMarks

pub fn load(root: &Path) -> Result<Self, RollbackError>

Load the marks stored under root (missing file = first contact).

pub fn mark(&self, line: &Line) -> Option<u64>

The recorded mark for a line, if any.

pub fn check(&self, manifest: &LayerManifest) -> RollbackVerdict

Check a manifest against the marks. Accept does NOT advance the mark — call Self::advance after the layer is fully verified and laid down, so a failed install cannot burn the mark.

pub fn advance(&mut self, manifest: &LayerManifest) -> Result<(), RollbackError>

Record acceptance of a manifest: raise the line’s mark to the manifest’s counter (never lowers) and persist.

Trait Implementations

impl Debug for HighWaterMarks

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.