[DDG-CB] Circuit breaker opened after ${circuitBreaker.failu

Error message

[DDG-CB] Circuit breaker opened after ${circuitBreaker.failures} consecutive failures — fast-failing for ${CB_COOLDOWN_MS}ms

What it means

Error "[DDG-CB] Circuit breaker opened after ${circuitBreaker.failures} consecutive failures — fast-failing for ${CB_COOLDOWN_MS}ms" thrown in diegosouzapw/OmniRoute.

Source

Thrown at open-sse/executors/duckduckgo-web.ts:42

}

const circuitBreaker: CircuitBreakerState = { failures: 0, openedAt: 0 };

export function cbIsOpen(): boolean {
  if (circuitBreaker.openedAt === 0) return false;
  if (Date.now() - circuitBreaker.openedAt >= CB_COOLDOWN_MS) {
    // Cooldown elapsed — half-open: allow the next request through.
    circuitBreaker.openedAt = 0;
    return false;
  }
  return true;
}

export function cbRecordFailure(): void {
  circuitBreaker.failures++;
  if (circuitBreaker.failures >= CB_THRESHOLD && circuitBreaker.openedAt === 0) {
    circuitBreaker.openedAt = Date.now();
    console.warn(
      `[DDG-CB] Circuit breaker opened after ${circuitBreaker.failures} consecutive failures — fast-failing for ${CB_COOLDOWN_MS}ms`
    );
  }
}

export function cbRecordSuccess(): void {
  if (circuitBreaker.failures > 0) {
    circuitBreaker.failures = 0;
  }
}

// Test-only: direct read/write access to the module-level breaker singleton
// so tests can exercise open/half-open/closed transitions without waiting
// CB_COOLDOWN_MS in real time. Not used by production code.
export function __setDdgCircuitBreakerStateForTests(failures: number, openedAt: number): void {
  circuitBreaker.failures = failures;
  circuitBreaker.openedAt = openedAt;
}

View on GitHub (pinned to a179ffed5b)

When it happens

Trigger: Thrown at open-sse/executors/duckduckgo-web.ts:42 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of diegosouzapw/OmniRoute@a179ffed5b (2026-08-25). Data as JSON: /api/errors/06bfbf3aa2dc4c66. Report an issue: GitHub.