Struct LogStore 

pub struct LogStore { /* private fields */ }

Raft log storage backed by redb (pure Rust embedded KV store).

Implementations

impl LogStore

pub fn new(path: &Path) -> Result<Self>

Trait Implementations

impl Clone for LogStore

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl RaftLogReader<TypeConfig> for LogStore

async fn try_get_log_entries<RB: RangeBounds<u64> + Clone + Debug + OptionalSend>( &mut self, range: RB, ) -> Result<Vec<Entry<TypeConfig>>, StorageError<NodeId>>

Get a series of log entries from storage.

fn limited_get_log_entries( &mut self, start: u64, end: u64, ) -> impl Future<Output = Result<Vec<<C as RaftTypeConfig>::Entry>, StorageError<<C as RaftTypeConfig>::NodeId>>> + Send

Returns log entries within range [start, end), end is exclusive, potentially limited by implementation-defined constraints.

impl RaftLogStorage<TypeConfig> for LogStore

type LogReader = LogStore

Log reader type.

async fn get_log_state( &mut self, ) -> Result<LogState<TypeConfig>, StorageError<NodeId>>

Returns the last deleted log id and the last log id.

async fn get_log_reader(&mut self) -> Self::LogReader

Get the log reader.

async fn save_vote( &mut self, vote: &Vote<NodeId>, ) -> Result<(), StorageError<NodeId>>

Save vote to storage.

async fn read_vote( &mut self, ) -> Result<Option<Vote<NodeId>>, StorageError<NodeId>>

Return the last saved vote by Self::save_vote.

async fn append<I>( &mut self, entries: I, callback: LogFlushed<TypeConfig>, ) -> Result<(), StorageError<NodeId>>

where I: IntoIterator<Item = Entry<TypeConfig>> + OptionalSend,

Append log entries and call the callback once logs are persisted on disk.

async fn truncate( &mut self, log_id: LogId<NodeId>, ) -> Result<(), StorageError<NodeId>>

Truncate logs since log_id, inclusive

async fn purge( &mut self, log_id: LogId<NodeId>, ) -> Result<(), StorageError<NodeId>>

Purge logs upto log_id, inclusive

fn save_committed( &mut self, _committed: Option<LogId<<C as RaftTypeConfig>::NodeId>>, ) -> impl Future<Output = Result<(), StorageError<<C as RaftTypeConfig>::NodeId>>> + Send

Saves the last committed log id to storage.

fn read_committed( &mut self, ) -> impl Future<Output = Result<Option<LogId<<C as RaftTypeConfig>::NodeId>>, StorageError<<C as RaftTypeConfig>::NodeId>>> + Send

Return the last saved committed log id by Self::save_committed.