Struct TermTracker 

pub struct TermTracker { /* private fields */ }

Tracks the current term and votes for leader election

Implementations

impl TermTracker

pub fn new() -> Self

Create a new tracker starting at term 0.

pub fn current_term(&self) -> u64

Return the current term.

pub fn advance_term(&mut self, new_term: u64) -> bool

Advance to a new term, clearing the vote.

Returns true if the term was actually advanced.

pub fn grant_vote(&mut self, candidate_id: impl Into<String>) -> bool

Attempt to cast a vote for candidate_id in the current term.

Returns true if the vote was granted (can only vote once per term).

pub fn voted_for(&self) -> Option<&str>

The candidate voted for in the current term, if any.

Trait Implementations

impl Default for TermTracker

fn default() -> Self

Returns the “default value” for a type.