Struct raft::JointConfig

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pub struct JointConfig { /* fields omitted */ }

[−] Expand description

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[+]

[+] Show hidden undocumented items

fn clone(&self) -> Configuration[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Debug for Configuration[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl Default for Configuration[+]

[+] Show hidden undocumented items

fn default() -> Configuration[−]

Returns the “default value” for a type.

impl PartialEq<Configuration> for Configuration[+]

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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: &Configuration) -> bool[−]

This method tests for !=.

impl StructuralPartialEq for Configuration