Function frugalos_config::cluster::make_rlog

pub fn make_rlog<P: AsRef<Path>, S: Spawn + Clone + Send + 'static>(
    logger: Logger, 
    data_dir: P, 
    local: &Server, 
    rpc_service: RpcServiceHandle, 
    spawner: S, 
    raft_service: ServiceHandle, 
    initial_members: Vec<Server>
) -> Result<(Device, ReplicatedLog<RaftIo>)>

Raftの複製ログを生成する。