Struct CandidateInfo 

pub struct CandidateInfo {
    pub process_id: String,
    pub priority: i32,
    pub last_heartbeat_nanos: u64,
    pub versionstamp: [u8; 12],
}

Information about a registered candidate

Candidates exist independently of leadership. A process must register as a candidate before it can claim leadership.

Fields

process_id: String

Unique identifier for the process

priority: i32

Candidate’s priority for leader selection

Higher priority candidates can preempt lower priority leaders when preemption is enabled.

last_heartbeat_nanos: u64

Last heartbeat timestamp (nanos since epoch)

Used to determine if candidate is still alive.

versionstamp: [u8; 12]

Versionstamp from registration

Fixed at registration time, never changes on heartbeat. Provides global ordering of candidates.

Implementations

impl CandidateInfo

pub fn is_alive(&self, current_time: Duration, timeout: Duration) -> bool

Check if this candidate is still alive

Arguments

• current_time - Current time as Duration since epoch
• timeout - Maximum time since last heartbeat

Returns

true if the candidate has sent a heartbeat within the timeout

Trait Implementations

impl Clone for CandidateInfo

fn clone(&self) -> CandidateInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CandidateInfo

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

Formats the value using the given formatter.

impl PartialEq for CandidateInfo

fn eq(&self, other: &CandidateInfo) -> 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 Eq for CandidateInfo

impl StructuralPartialEq for CandidateInfo