Struct RaftConfig 

pub struct RaftConfig {
    pub node_id: u64,
    pub group_id: u64,
    pub peers: Vec<u64>,
    pub learners: Vec<u64>,
    pub observers: Vec<u64>,
    pub starts_as_learner: bool,
    pub starts_as_observer: bool,
    pub election_timeout_min: Duration,
    pub election_timeout_max: Duration,
    pub heartbeat_interval: Duration,
}

Configuration for a Raft node.

Fields

node_id: u64

This node’s ID (must be unique within the Raft group).

group_id: u64

Raft group ID (for Multi-Raft routing).

peers: Vec<u64>

IDs of voting peers in this group (excluding self).

learners: Vec<u64>

IDs of non-voting learner peers in this group (excluding self).

Learners receive log replication but do not vote in elections and are not counted in the commit quorum. They are promoted to voters once they catch up — see RaftNode::promote_learner.

observers: Vec<u64>

IDs of cross-cluster observer peers tracked by this leader.

Observers receive log entries and send advisory acks, but they never participate in leader election and are never counted in the commit quorum. A slow observer does not stall source commits.

starts_as_learner: bool

Whether this node itself starts in the Learner role (boot-time).

Set true when a new node joins an existing cluster and is created as a learner for a given group; cleared when the node is promoted to voter via promote_self_to_voter.

starts_as_observer: bool

Whether this node itself starts in the Observer role (boot-time).

Set true when this node is a cross-cluster mirror replica observing a source cluster’s Raft group. An observer never participates in elections and never contributes to the commit quorum. Acks it sends to the source leader are advisory only.

election_timeout_min: Duration

Minimum election timeout.

election_timeout_max: Duration

Maximum election timeout.

heartbeat_interval: Duration

Heartbeat interval (must be << election_timeout_min).

Implementations

impl RaftConfig

pub fn cluster_size(&self) -> usize

Total number of voters (self + voter peers).

Learners are excluded. This value drives quorum math and so must never grow transiently while the learner is catching up — that is exactly the safety property the learner phase is designed to give.

pub fn quorum(&self) -> usize

Quorum size: floor(n/2) + 1 over the voter set.

Trait Implementations

impl Clone for RaftConfig

fn clone(&self) -> RaftConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RaftConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.