static void Main(string[] args)
{
var service = new UnreliableService();
var breaker = Policy
.Handle <TimeoutException>()
.CircuitBreaker(
2, // Number of consecutive exceptions before opening the circuit
TimeSpan.FromMinutes(1), // How long the circuit will be open
(exception, timespan) => { Console.WriteLine("Operation failed!!!"); },
() => { Console.WriteLine($"Circuit is Closed!!!"); },
() => { Console.WriteLine($"Circuit is Half Open!!!"); });
while (true)
{
var result = breaker.ExecuteAndCapture(
() => service.GetTime()
);
}
/*
* // Monitor the circuit state, for example for health reporting.
* CircuitState state = breaker.CircuitState;
*
* CircuitState.Closed - Normal operation. Execution of actions allowed.
* CircuitState.Open - The automated controller has opened the circuit. Execution of actions blocked.
* CircuitState.HalfOpen - Recovering from open state, after the automated break duration has expired. Execution of actions permitted. Success of subsequent action/s controls onward transition to Open or Closed state.
* CircuitState.Isolated - Circuit held manually in an open state. Execution of actions blocked.
*
* Manually open (and hold open) a circuit breaker - for example to manually isolate a downstream service.
* breaker.Isolate();
*
* Reset the breaker to closed state, to start accepting actions again.
* breaker.Reset(); */
}
static void Main(string[] args)
{
var service = new UnreliableService();
var circuitBreaker = new CircuitBreaker(typeof(UnreliableService).FullName, 1000);
while (true)
{
circuitBreaker.Invoke(
// This is the operation we want to execute.
() => service.GetTime(),
// Circuit is open we should take another path in our aplication.
(circuitBreakerOpenException) => Console.WriteLine("Circuit is Open!!!"),
// Other exception was thown. Retry?
(exception) => Console.WriteLine("Operation failed!!!")
);
}
}
