Struct CircuitBreaker 

pub struct CircuitBreaker { /* private fields */ }

Lightweight, lock-free per-proxy circuit breaker.

All fields are atomics so many tasks can call record_failure / record_success / is_available concurrently without a mutex.

Implementations

impl CircuitBreaker

pub const fn new(threshold: u32, half_open_after_ms: u64) -> Self

Create a new breaker from config parameters.

pub fn state(&self) -> u8

Current state as a u8 constant.

pub fn is_available(&self) -> bool

Returns true when the proxy may be used (Closed or HalfOpen).

When the circuit is Open and enough time has elapsed since the last failure the breaker transitions to HalfOpen and returns true.

pub fn record_success(&self)

Record a successful request.

When the circuit is in HalfOpen this resets the failure count and transitions back to Closed.

pub fn record_failure(&self)

Record a failed request.

In Closed: if the incremented count reaches the threshold the circuit trips to Open. In HalfOpen: immediately trips back to Open and resets the timer.