Struct raft::JointConfig

pub struct JointConfig { /* private fields */ }

A configuration of two groups of (possibly overlapping) majority configurations. Decisions require the support of both majorities.

Implementations

impl Configuration

pub fn new(voters: HashSet<u64, BuildHasherDefault<FxHasher>>) -> Configuration

Creates a new configuration using the given IDs.

pub fn with_capacity(cap: usize) -> Configuration

Creates an empty configuration with given capacity.

pub fn committed_index( &self, use_group_commit: bool, l: &impl AckedIndexer ) -> (u64, bool)

Returns the largest committed index for the given joint quorum. An index is jointly committed if it is committed in both constituent majorities.

The bool flag indicates whether the index is computed by group commit algorithm successfully. It’s true only when both majorities use group commit.

pub fn vote_result(&self, check: impl Fn(u64) -> Option<bool>) -> VoteResult

Takes a mapping of voters to yes/no (true/false) votes and returns a result indicating whether the vote is pending, lost, or won. A joint quorum requires both majority quorums to vote in favor.

pub fn clear(&mut self)

Clears all IDs.

pub fn is_singleton(&self) -> bool

Returns true if (and only if) there is only one voting member (i.e. the leader) in the current configuration.

pub fn ids(&self) -> Union<'_>

Returns an iterator over two hash set without cloning.

pub fn contains(&self, id: u64) -> bool

Check if an id is a voter.

Trait Implementations

impl Clone for Configuration

fn clone(&self) -> Configuration

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Configuration

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

Formats the value using the given formatter.

impl Default for Configuration

fn default() -> Configuration

Returns the “default value” for a type.

impl PartialEq<Configuration> for Configuration

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Configuration

impl StructuralEq for Configuration

impl StructuralPartialEq for Configuration