statemachine.dsl

 machine("Circuit Breaker", machine -> {
            machine.startWith("OPEN");

            machine.at("OPEN", rule -> {
                rule.when("connect", failOp, "OPEN", "CLOSED");
            });

            machine.at("CLOSED", rule -> {
                rule.when("connect", s -> {
                }, "CLOSED");
                rule.when("re-connect", s -> {
                }, "HALF-OPEN");
            });

            machine.at("HALF-OPEN", rule -> {
                rule.when("connect", s -> {
                }, "CLOSED");
                rule.when("re-open", s -> {
                }, "OPEN");

            });

        });