Struct CircuitBreakerConfig 

pub struct CircuitBreakerConfig {
    pub failure_threshold: usize,
    pub cooldown_duration: Duration,
    pub half_open_max_attempts: usize,
}

Circuit breaker configuration for node execution

Controls when a node’s circuit breaker trips (opens) after repeated failures, and how long it stays open before allowing a retry attempt.

State Machine

Closed --[failures >= threshold]--> Open
Open --[cooldown elapsed]--> HalfOpen
HalfOpen --[success]--> Closed
HalfOpen --[failure]--> Open

Examples

use juncture_core::graph::CircuitBreakerConfig;
use std::time::Duration;

let config = CircuitBreakerConfig::new(5, Duration::from_secs(30));
assert_eq!(config.failure_threshold, 5);

Fields

failure_threshold: usize

Number of consecutive failures before the circuit opens

cooldown_duration: Duration

Duration the circuit stays open before transitioning to half-open

half_open_max_attempts: usize

Maximum attempts allowed in half-open state before re-opening

Implementations

impl CircuitBreakerConfig

pub const fn new(failure_threshold: usize, cooldown_duration: Duration) -> Self

Create a new circuit breaker configuration

Arguments

• failure_threshold - Consecutive failures before opening
• cooldown_duration - How long the circuit stays open

pub const fn with_half_open_max_attempts(self, max_attempts: usize) -> Self

Set the maximum attempts allowed in half-open state

The value is clamped to a minimum of 1 to prevent the circuit from being permanently stuck in HalfOpen state.

Trait Implementations

impl Clone for CircuitBreakerConfig

fn clone(&self) -> CircuitBreakerConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CircuitBreakerConfig

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

Formats the value using the given formatter.