State

An enumeration that models the internal state of CircuitBreaker, kept in an AtomicReference for synchronization.

The initial state when initializing a CircuitBreaker is Closed. The available states:

• Closed in case tasks are allowed to go through
• Open in case the circuit breaker is active and rejects incoming tasks
• HalfOpen in case a reset attempt was triggered and it is waiting for the result in order to evolve in Closed, or back to Open