Struct Journal 

pub struct Journal<B> { /* private fields */ }

The single state-machine implementation shared by every backend.

Implementations

impl<B: JournalBackend> Journal<B>

pub fn new(backend: B) -> Self

Wraps a backend. Durable production backends must report write safety.

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

Obtains a new fencing generation, invalidating every older lease.

pub fn head(&self) -> Result<Option<JournalHead>, JournalError>

Returns the current verified head.

pub fn publish( &self, lease: &Lease, expected: Option<&JournalHead>, objects: Vec<JournalObject>, entries: Vec<JournalEntry>, ) -> Result<JournalHead, JournalError>

Atomically publishes objects and an ordered entry batch under one fence.

Exact redelivery is a no-op. Any conflicting delivery, missing/corrupt payload, stale fence, sequence gap, or wrong predecessor is rejected.

pub fn verify(&self) -> Result<Verification, JournalError>

Reads and verifies the complete journal closure.

pub fn replay(&self) -> Result<Replay, JournalError>

Replays verified entries in sequence order.

pub fn table_projection(&self) -> Result<TableProjection, JournalError>

Creates a detached, read-only table projection.

pub fn dir_projection(&self) -> Result<DirProjection, JournalError>

Creates a detached, read-only directory projection.

pub fn entry( sequence: u64, previous: Option<ContentId>, kind: Symbol, payloads: Vec<ContentId>, ) -> JournalEntry

Convenience constructor for an entry with an open kind symbol.