Rabia Persistence

Simple persistence implementations for the Rabia consensus protocol.

This crate provides simplified persistence implementations that store exactly one state value, matching Rabia's consensus requirements.

Implementations

• [InMemoryPersistence] - State stored in memory (testing/non-persistent)
• [FileSystemPersistence] - State stored in a file (persistent across restarts)

Example

use rabia_persistence::{InMemoryPersistence, FileSystemPersistence};
use rabia_core::persistence::PersistenceLayer;

# tokio_test::block_on(async {
// In-memory persistence
let persistence = InMemoryPersistence::new();
persistence.save_state(b"hello world").await.unwrap();
let state = persistence.load_state().await.unwrap();
assert_eq!(state, Some(b"hello world".to_vec()));

// File-based persistence  
let fs_persistence = FileSystemPersistence::new("/tmp/rabia-test").await.unwrap();
fs_persistence.save_state(b"persistent state").await.unwrap();
let state = fs_persistence.load_state().await.unwrap();
assert_eq!(state, Some(b"persistent state".to_vec()));
# });