Struct HostDirJournalBackend 

pub struct HostDirJournalBackend { /* private fields */ }

Crash-durable journal composition over the canonical host-backed Table/Dir port.

state contains both fence and head. Its one compare-exchange is the only publication linearization point. Objects and entries are immutable leaves.

Implementations

impl HostDirJournalBackend

pub fn open( port: Arc<dyn HostDirPort>, capabilities: BackendCapabilities, work_bound: usize, ) -> Result<Self, JournalError>

Opens a binding. Read operations remain available when write safety is absent.

pub fn with_failpoint_hook( self, hook: impl Fn(Failpoint) -> bool + Send + Sync + 'static, ) -> Self

Installs a deterministic test hook. Returning true simulates process death.

pub fn capabilities(&self) -> BackendCapabilities

Reports the binding evidence used to admit or refuse write mode.

Trait Implementations

impl JournalBackend for HostDirJournalBackend

fn acquire_lease(&self) -> Result<Lease, JournalError>

fn read_state(&self) -> Result<StoredState, JournalError>

fn admit(&self, admission: Admission) -> Result<JournalHead, JournalError>