Struct MemberSignals 

pub struct MemberSignals {
    pub since_last_heartbeat: Duration,
    pub replication_lag_lsn: u64,
    pub recent_errors: u32,
    pub unhealthy_for: Duration,
}

Raw, point-in-time health signals for one member, read from the running cluster through ClusterSignals::member_signals. The supervisor turns these into a HealthScore; it owns no clock or counters itself.

Fields

since_last_heartbeat: Duration

Time since the member’s last heartbeat was received (liveness).

replication_lag_lsn: u64

How many WAL LSNs the member trails the range commit watermark by, as an aggregate liveness-of-replication signal. Zero means fully caught up.

recent_errors: u32

Observed errors from the member in the recent observation window.

unhealthy_for: Duration

How long the member has been continuously below the failover threshold. Zero for a healthy member; the caller resets it the moment the member recovers. This is the grace-period input that damps flapping — the supervisor refuses to fail over until it reaches the policy’s grace period.

Implementations

impl MemberSignals

pub fn healthy() -> MemberSignals

A perfectly healthy member: fresh heartbeat, no lag, no errors, never unhealthy. Handy as a test/observation baseline.

Trait Implementations

impl Clone for MemberSignals

fn clone(&self) -> MemberSignals

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MemberSignals

impl Debug for MemberSignals

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

Formats the value using the given formatter.

impl Eq for MemberSignals

impl PartialEq for MemberSignals

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