def monitor()

in pan-domain-auth-verification/src/main/scala/com/gu/pandomainauth/internal/NonActiveKeyMonitoring.scala [14:24]

• 10 lines of code
• 3 McCabe index (conditional complexity)

  def monitor(usedKey: KeyHashId, activeKey: KeyHashId): Unit = {
    val isActive = usedKey == activeKey
    activeFrequency.increment(isActive)
    keyFrequency.increment(usedKey)

    if (!isActive) { // an accepted key, but not the _current_ one - either old or new...
      if (rateLimiter.tryAcquire()) {
        logger.warn(s"NON_ACTIVE_KEY_USED (used=$usedKey, active=$activeKey): active_freq=${activeFrequency.snapshot()} key_freq=${keyFrequency.snapshot()}")
      }
    }
  }