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package dk.thoerup.circuitbreaker; |
package dk.thoerup.circuitbreaker; |
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import java.util.*; |
import java.util.Date; |
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import dk.thoerup.circuitbreaker.notification.*; |
import java.util.LinkedList; |
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import dk.thoerup.circuitbreaker.notification.Notifier; |
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public class LoggingCircuitBreaker extends AccountingCircuitBreaker { |
public class LoggingCircuitBreaker extends AccountingCircuitBreaker { |
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public class LogEntry { |
public class LogEntry { |
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public long time; |
public long time; |
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public Notifier.Event event; |
public Notifier.Event event; |
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public int count = 0; |
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public LogEntry(Notifier.Event evnt) { |
public LogEntry(Notifier.Event evnt) { |
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this.event = evnt; |
this.event = evnt; |
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this.time = System.currentTimeMillis(); |
this.time = System.currentTimeMillis(); |
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} |
} |
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public void newRetrip() {// |
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count++; |
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time = System.currentTimeMillis(); |
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} |
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@Override |
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public String toString() { |
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String str = new Date(time).toString() + (" : ") + event; |
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if (event == Notifier.Event.BreakerRetripped) { |
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str += ( ", " + count + " re-trips" ); |
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} |
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return str ; |
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} |
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} |
} |
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addEntry(Notifier.Event.BreakerTripped); |
addEntry(Notifier.Event.BreakerTripped); |
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} |
} |
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/* don't log retrips - they are not as interesting as trips and resets |
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@Override |
@Override |
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public void retripBreaker() { |
public void retripBreaker() { |
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super.retripBreaker(); |
super.retripBreaker(); |
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addEntry(Notifier.Event.BreakerRetripped); |
addEntry(Notifier.Event.BreakerRetripped); |
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} |
} |
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*/ |
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@Override |
@Override |
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public void reset() { |
public void reset() { |
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private void addEntry(Notifier.Event event) { |
private void addEntry(Notifier.Event event) { |
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synchronized(this) { |
synchronized(this) { |
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log.addFirst( new LogEntry(event) ); |
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if(log.size() > maxSize) { |
if (log.getFirst().event != Notifier.Event.BreakerRetripped) { |
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log.removeLast(); |
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log.addFirst( new LogEntry(event) ); |
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if(log.size() > maxSize) { |
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log.removeLast(); |
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} |
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} else { |
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log.getFirst().newRetrip(); |
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} |
} |
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} |
} |
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} |
} |