Struct HealthMonitorStats 

pub struct HealthMonitorStats {
    pub ticks: AtomicU64,
    pub replacements_initiated: AtomicU64,
    pub replacements_failed: AtomicU64,
    pub backoff_skips: AtomicU64,
    pub consecutive_failures: Mutex<Vec<u32>>,
    pub last_tick_at: Mutex<Option<Instant>>,
}

Runtime counters surfaced to operator tooling. Atomic fields so reads from CLI / Deck panels are wait-free.

Fields

ticks: AtomicU64

Number of poll ticks the monitor has completed since spawn. Increments after each pass over the group’s replicas, regardless of how many were unhealthy.

replacements_initiated: AtomicU64

Number of LifecycleGroup::replace calls initiated.

replacements_failed: AtomicU64

Number of replace attempts that failed (factory returned a daemon whose on_start errored, or the slot index went out of bounds mid-respawn). Operators detecting persistent failures should consult this.

backoff_skips: AtomicU64

Number of poll ticks where the monitor skipped a known- unhealthy replica because exponential backoff hadn’t elapsed yet. Counts every (tick × skipped-replica) combination; operators reading the per-index backoff state should consult consecutive_failures.

consecutive_failures: Mutex<Vec<u32>>

Per-replica-index consecutive-failure counter. Bumped each tick the replica is still unhealthy after a replace attempt; reset to 0 when the replica reports healthy. The 2^consecutive_failures shift drives the next-retry-tick computation (capped at MAX_BACKOFF_SHIFT).

last_tick_at: Mutex<Option<Instant>>

Instant of the most recent poll tick, recorded after each pass. None until the first tick lands.

Trait Implementations

impl Debug for HealthMonitorStats

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

Formats the value using the given formatter.

impl Default for HealthMonitorStats

fn default() -> HealthMonitorStats

Returns the “default value” for a type.