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package dk.thoerup.curcuitbreaker; |
package dk.thoerup.curcuitbreaker; |
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import java.util.logging.Logger; |
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import dk.thoerup.curcuitbreaker.notification.Notifier; |
import dk.thoerup.curcuitbreaker.notification.Notifier; |
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import dk.thoerup.curcuitbreaker.notification.NullNotifier; |
import dk.thoerup.curcuitbreaker.notification.NullNotifier; |
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public class CircuitBreaker{ |
public class CircuitBreaker{ |
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Logger logger = Logger.getLogger(CircuitBreaker.class.getName()); |
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private CircuitBreakerState currentState; |
private volatile CircuitBreakerState currentState; |
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private OpenState open = new OpenState(); |
private final OpenState open = new OpenState(); |
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private HalfOpenState halfOpen = new HalfOpenState(); |
private final HalfOpenState halfOpen = new HalfOpenState(); |
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private ClosedState closed = new ClosedState(); |
private final ClosedState closed = new ClosedState(); |
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private String name; |
private String name; |
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public void tripBreaker() { |
public void tripBreaker() { |
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synchronized(this) { |
synchronized(this) { |
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open.trip(); |
if (currentState != open) { // TODO:Is this conditional necessary ?? |
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currentState = open; |
open.trip(); |
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currentState = open; |
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notifier.sendNotification(name, Notifier.Event.BreakerTripped); |
notifier.sendNotification(name, Notifier.Event.BreakerTripped); |
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} |
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} |
} |
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} |
} |
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public void attemptReset() { |
public void attemptReset() { |
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synchronized(this) { |
synchronized(this) { |
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currentState = halfOpen; |
if (currentState != halfOpen) { // TODO:Is this conditional necessary ?? |
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notifier.sendNotification(name, Notifier.Event.BreakerAttemptReset); |
currentState = halfOpen; |
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notifier.sendNotification(name, Notifier.Event.BreakerAttemptReset); |
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} |
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} |
} |
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} |
} |
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public void reset() { |
public void reset() { |
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synchronized(this) { |
synchronized(this) { |
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currentState = closed; |
if (currentState != closed) { // TODO: Is this conditional necessary ?? |
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notifier.sendNotification(name, Notifier.Event.BreakerReset); |
currentState = closed; |
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notifier.sendNotification(name, Notifier.Event.BreakerReset); |
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} |
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} |
} |
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} |
} |
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