Struct FileVoteStateStore 

pub struct FileVoteStateStore { /* private fields */ }

File-backed store using atomic-rename + fsync semantics.

Persists JSON to a single file (e.g. <data-dir>/consensus/last_sign.json). Updates are serialized through a mutex; the disk write itself is sync.

Implementations

impl FileVoteStateStore

pub fn open<P: AsRef<Path>>(path: P) -> Result<Self>

Opens (or creates) the store at path. If the file exists, parses it; otherwise initializes empty state.

The parent directory must already exist — the caller is responsible for ensuring <data-dir>/consensus/ is created during node startup.

Trait Implementations

impl VoteStateStore for FileVoteStateStore

fn load(&self) -> Result<LastSignState>

Loads the persisted state. Returns LastSignState::empty() if no state has been recorded yet.

fn record(&self, state: &LastSignState) -> Result<()>

Atomically persists the new state. Must fsync before returning.

fn check_vrs( &self, view: u64, height: u64, step: VoteStep, block_hash: &Hash, ) -> Result<VrsDecision>

Checks whether (view, height, step) for block_hash is safe to sign.