Enum HealthStatus 

pub enum HealthStatus {
    Healthy,
    Degraded,
    Unhealthy,
    Recovering,
}

Current health state of a node.

State transitions (with ConsecutiveFailurePolicy):

┌─────────┐  failures >= ⌈threshold/2⌉  ┌──────────┐  failures >= threshold  ┌───────────┐
│ Healthy  │ ──────────────────────────→ │ Degraded │ ──────────────────────→ │ Unhealthy │
└─────────┘                              └──────────┘                         └───────────┘
     ↑                                        │                                    │
     │ 1 success                               │ 1 success                          │ 1 success
     │                                        ↓                                    ↓
     │                                   ┌─────────┐                          ┌────────────┐
     └───────────────────────────────────│ Healthy │←─── recovery_successes ──│ Recovering │
                                         └─────────┘                          └────────────┘

Variants

Healthy

Node is operating normally. All traffic is routed here.

Degraded

Node is responding but showing signs of stress (e.g., elevated latency). Still receives traffic, but signals the system should be watchful.

Unhealthy

Node has failed repeatedly and is temporarily removed from rotation. No traffic is sent until HealthPolicy::should_probe allows a probe.

Recovering

Node was unhealthy but is being given probe requests to verify recovery. Receives limited traffic until enough consecutive successes promote it back to Healthy.

Implementations

impl HealthStatus

pub fn is_available(self) -> bool

Returns true for any status that should still receive traffic (Healthy, Degraded, Recovering).

pub const fn bit_flag(self) -> u8

Returns a single-bit flag for this variant. Used by HealthFilter.

Trait Implementations

impl Clone for HealthStatus

fn clone(&self) -> HealthStatus

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HealthStatus

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

Formats the value using the given formatter.

impl Hash for HealthStatus

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HealthStatus

fn eq(&self, other: &HealthStatus) -> 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 Copy for HealthStatus

impl Eq for HealthStatus

impl StructuralPartialEq for HealthStatus