Struct History 

pub struct History { /* private fields */ }

Where one VM’s history is appended.

Implementations

impl History

pub fn from_store( vm_id: &str, store: Arc<dyn RunStore>, clock: Arc<dyn Clock>, ) -> History

The history for vm_id, using the supplied store and wall clock.

A subdirectory rather than the root itself, so ledger::read_all’s *.json glob and this module’s files can never be confused for one another by a tool listing the state directory.

pub fn append(&self, event: Event)

Appends one event. Failures are swallowed.

Deliberately, and for the ledger’s reason: this runs on teardown paths, and a history write that raised would replace the caller’s real failure with a filesystem one. The values are still in the envelope; only the durable record is lost.

seq is the current line count — see the module docs on the single-writer assumption that makes counting sufficient.

Trait Implementations

impl Clone for History

fn clone(&self) -> History

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for History

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

Formats the value using the given formatter.

impl HistoryExt for History

fn for_vm(root: &Path, vm_id: &str) -> Self