Struct DurableVoteState 

pub struct DurableVoteState {
    pub term: ControlPlaneTerm,
    pub voted_for: Option<ClusterVoterIdentity>,
}

The durable per-node vote state every voting member must persist before acknowledging a vote, so a member that crashes and restarts mid-term cannot double-vote and split a term (ADR 0030: “the supervisor needs durable per-node vote state (last-vote) to prevent double-voting across restarts”).

This is the control-plane analogue of crate::replication::election::LastVote; it is named here as a required part of the consensus boundary so a follow-up slice cannot ship a leader election without it.

Fields

term: ControlPlaneTerm

The highest term this member has voted in.

voted_for: Option<ClusterVoterIdentity>

Who this member granted its vote to in term, if anyone. None means the member has seen term but not yet voted in it.

Implementations

impl DurableVoteState

pub fn initial() -> Self

The vote state of a member that has never voted.

Trait Implementations

impl Clone for DurableVoteState

fn clone(&self) -> DurableVoteState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DurableVoteState

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

Formats the value using the given formatter.

impl Eq for DurableVoteState

impl PartialEq for DurableVoteState

fn eq(&self, other: &DurableVoteState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DurableVoteState