Enum Role 

pub enum Role {
    Primary,
    Replica,
    Candidate,
}

Self-perceived role of a node in its heartbeat. The state machine in kevy-elect’s reactor decides which transitions are legal; this enum is just what gets put on the wire.

Variants

Primary

This node currently accepts writes.

Replica

This node mirrors a primary.

Candidate

This node has sent OFFER for the current epoch and is waiting for quorum ACCEPT. Transitional — once enough ACCEPTs arrive it flips to Primary and broadcasts ANNOUNCE; if the election times out it flips back to Replica and re-arms its DOWN detector.

Implementations

impl Role

pub fn as_str(self) -> &'static str

The wire-form lowercase ASCII for this role.

pub fn parse(s: &[u8]) -> Option<Self>

Parse the wire-form (case-insensitive).

Trait Implementations

impl Clone for Role

fn clone(&self) -> Role

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Role

impl Debug for Role

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

Formats the value using the given formatter.

impl Eq for Role

impl PartialEq for Role

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