Struct StateMachine 

pub struct StateMachine { /* private fields */ }

The replicated state machine with in-memory storage. For production use, consider using DatabaseStateMachine which persists to storage.

Implementations

impl StateMachine

pub fn new() -> Self

Create a new in-memory state machine.

Trait Implementations

impl Default for StateMachine

fn default() -> Self

Returns the “default value” for a type.

impl StateMachineBackend for StateMachine

fn apply(&self, command: &Command, index: u64) -> CommandResult

Apply a command to the state machine at the given log index.

fn get(&self, key: &str) -> Option<Vec<u8>>

Get a value by key.

fn last_applied(&self) -> u64

Get the last applied log index.

fn version(&self) -> u64

Get the current version/sequence number.

fn len(&self) -> usize

Get the number of keys stored.

fn snapshot(&self) -> Snapshot

Take a snapshot of the current state.

fn restore(&self, snapshot: Snapshot)

Restore state from a snapshot.

fn is_empty(&self) -> bool

Check if the state machine is empty.