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package org.glassfish.external.statistics.impl;
import org.glassfish.external.statistics.BoundedRangeStatistic;
import java.util.Map;
import java.lang.reflect.*;
/**
* @author Sreenivas Munnangi
*/
public final class BoundedRangeStatisticImpl extends StatisticImpl
implements BoundedRangeStatistic, InvocationHandler {
private long lowerBound = 0L;
private long upperBound = 0L;
private long currentVal = 0L;
private long highWaterMark = Long.MIN_VALUE;
private long lowWaterMark = Long.MAX_VALUE;
private final long initLowerBound;
private final long initUpperBound;
private final long initCurrentVal;
private final long initHighWaterMark;
private final long initLowWaterMark;
private final BoundedRangeStatistic bs =
(BoundedRangeStatistic) Proxy.newProxyInstance(
BoundedRangeStatistic.class.getClassLoader(),
new Class[] { BoundedRangeStatistic.class },
this);
public synchronized String toString() {
return super.toString() + NEWLINE +
"Current: " + getCurrent() + NEWLINE +
"LowWaterMark: " + getLowWaterMark() + NEWLINE +
"HighWaterMark: " + getHighWaterMark() + NEWLINE +
"LowerBound: " + getLowerBound() + NEWLINE +
"UpperBound: " + getUpperBound();
}
public BoundedRangeStatisticImpl(long curVal, long highMark, long lowMark,
long upper, long lower, String name,
String unit, String desc, long startTime,
long sampleTime) {
super(name, unit, desc, startTime, sampleTime);
currentVal = curVal;
initCurrentVal = curVal;
highWaterMark = highMark;
initHighWaterMark = highMark;
lowWaterMark = lowMark;
initLowWaterMark = lowMark;
upperBound = upper;
initUpperBound = upper;
lowerBound = lower;
initLowerBound = lower;
}
public synchronized BoundedRangeStatistic getStatistic() {
return bs;
}
public synchronized Map getStaticAsMap() {
Map m = super.getStaticAsMap();
m.put("current", getCurrent());
m.put("lowerbound", getLowerBound());
m.put("upperbound", getUpperBound());
m.put("lowwatermark", getLowWaterMark());
m.put("highwatermark", getHighWaterMark());
return m;
}
public synchronized long getCurrent() {
return currentVal;
}
public synchronized void setCurrent(long curVal) {
currentVal = curVal;
lowWaterMark = (curVal >= lowWaterMark ? lowWaterMark : curVal);
highWaterMark = (curVal >= highWaterMark ? curVal : highWaterMark);
sampleTime = System.currentTimeMillis();
}
public synchronized long getHighWaterMark() {
return highWaterMark;
}
public synchronized void setHighWaterMark(long hwm) {
highWaterMark = hwm;
}
public synchronized long getLowWaterMark() {
return lowWaterMark;
}
public synchronized void setLowWaterMark(long lwm) {
lowWaterMark = lwm;
}
public synchronized long getLowerBound() {
return lowerBound;
}
public synchronized long getUpperBound() {
return upperBound;
}
@Override
public synchronized void reset() {
super.reset();
lowerBound = initLowerBound;
upperBound = initUpperBound;
currentVal = initCurrentVal;
highWaterMark = initHighWaterMark;
lowWaterMark = initLowWaterMark;
sampleTime = -1L;
}
// todo: equals implementation
public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
checkMethod(m);
Object result;
try {
result = m.invoke(this, args);
} catch (InvocationTargetException e) {
throw e.getTargetException();
} catch (Exception e) {
throw new RuntimeException("unexpected invocation exception: " +
e.getMessage());
}
return result;
}
}
