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package dk.thoerup.curcuitbreaker; |
package dk.thoerup.circuitbreaker; |
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import dk.thoerup.curcuitbreaker.notification.Notifier; |
import dk.thoerup.circuitbreaker.notification.Notifier; |
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import dk.thoerup.curcuitbreaker.notification.NullNotifier; |
import dk.thoerup.circuitbreaker.notification.NullNotifier; |
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/* Simple CircuitBreaker implementation - snipped from http://www.jroller.com/kenwdelong/entry/circuit_breaker_in_java |
/* Simple CircuitBreaker implementation - snipped from http://www.jroller.com/kenwdelong/entry/circuit_breaker_in_java |
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* |
* |
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try { |
try { |
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String s = (String) cb.invoke(new TestInvocation("http://rafiki/test")); |
String s = (String) cb.invoke(new TestInvocation("http://rafiki/test")); |
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response.getWriter().print(s); |
response.getWriter().print(s); |
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} catch (Throwable e) { |
} catch (Exception e) { |
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logger.warning( e.getMessage() ); |
logger.warning( e.getMessage() ); |
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response.sendError(500); |
response.sendError(500); |
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return; |
return; |
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open.setTimeout(timeoutMS); |
open.setTimeout(timeoutMS); |
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this.name = name; |
this.name = name; |
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reset(); |
//set correct intial state |
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internalReset(); |
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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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if (currentState != closed) { // TODO: Is this conditional necessary ?? |
if (currentState != closed) { // TODO: Is this conditional necessary ?? |
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currentState = closed; |
internalReset(); |
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notifier.sendNotification(name, Notifier.Event.BreakerReset); |
notifier.sendNotification(name, Notifier.Event.BreakerReset); |
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} |
} |
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} |
} |
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} |
} |
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//This one actually sets the correct closed/reset state |
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private void internalReset() { |
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closed.resetFailureCount(); |
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currentState = closed; |
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} |
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private CircuitBreakerState getState() { |
private CircuitBreakerState getState() { |
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synchronized(this) { |
synchronized(this) { |