Trait ElectionTransport 

pub trait ElectionTransport {
    // Required methods
    fn members(&self) -> Vec<Member>;
    fn request_vote(&mut self, peer_id: &str, req: &VoteRequest) -> VoteDecision;
    fn elapsed(&self) -> Duration;
    fn bump_term(&mut self, new_term: u64);
    fn promote(&mut self, new_term: u64);
}

Cluster operations the candidate drives, injected so the state machine stays pure and deterministically testable. Production backs these onto the membership view, the per-peer vote RPC, the durable term store, and the FAILOVER handover; tests back them onto a scripted fake.

Required Methods

fn members(&self) -> Vec<Member>

The candidate’s current view of cluster membership. The denominator for the majority is the voting members of this set.

fn request_vote(&mut self, peer_id: &str, req: &VoteRequest) -> VoteDecision

Ask one peer for its vote. The candidate never asks itself (it always self-grants). Implementors route this to the peer’s Voter.

fn elapsed(&self) -> Duration

Time elapsed since the election began, so the coordinator enforces the randomized timeout without owning a clock.

fn bump_term(&mut self, new_term: u64)

Durably advance this node’s current term to new_term. Called once, only when a real election begins (never for a dry-run). Persisted alongside the node’s other durable replication state.

fn promote(&mut self, new_term: u64)

Promote the candidate to primary under new_term, reusing the FAILOVER handover machinery (super::failover). Called only after a majority is collected in the real election.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors