Struct HardState 

pub struct HardState {
    pub term: Term,
    pub voted_for: Option<NodeId>,
}

The state Raft must persist before responding to any RPC.

Safety depends on current_term and voted_for surviving a crash: a node that forgot it had already voted in a term could vote twice and help elect two leaders. The RaftLog stores this alongside the log entries; the in-memory MemoryLog keeps it in a field.

Examples

use raft_io::HardState;

let hs = HardState::default();
assert_eq!(hs.term, 0);
assert_eq!(hs.voted_for, None);

Fields

term: Term

The latest term the node has seen.

voted_for: Option<NodeId>

The candidate this node voted for in term, if any.

Trait Implementations

impl Clone for HardState

fn clone(&self) -> HardState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HardState

impl Debug for HardState

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

Formats the value using the given formatter.

impl Default for HardState

fn default() -> HardState

Returns the “default value” for a type.

impl Eq for HardState

impl PartialEq for HardState

fn eq(&self, other: &HardState) -> 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 HardState