@Around(
value =
"(execution(@HistogramMetric * * (..)) || initialization(@HistogramMetric new(..))) && @annotation(histogramMetric)",
argNames = "thisJoinPoint, histogramMetric")
public Object aroundHistogramMetricMethod(
ProceedingJoinPoint thisJoinPoint, HistogramMetric histogramMetric) throws Throwable {
return engage(
thisJoinPoint,
histogramMetric.value(),
histogramMetric.alias(),
Metrics.buildHistogram(histogramMetric.samples()));
}
/**
* Returns a list of all recorded durations in the timer's sample.
*
* @return a list of all recorded durations in the timer's sample
*/
public List<Double> values() {
final List<Double> values = new ArrayList<Double>();
for (Long value : histogram.values()) {
values.add(convertFromNS(value));
}
return values;
}
/**
* Returns an array of durations at the given percentiles.
*
* @param percentiles one or more percentiles ({@code 0..1})
* @return an array of durations at the given percentiles
*/
public double[] percentiles(double... percentiles) {
final double[] scores = histogram.percentiles(percentiles);
for (int i = 0; i < scores.length; i++) {
scores[i] = convertFromNS(scores[i]);
}
return scores;
}
@Override
public long count() {
return histogram.count();
}
/** Clears all recorded durations. */
public void clear() {
histogram.clear();
}
private void update(long duration) {
if (duration >= 0) {
histogram.update(duration);
meter.mark();
}
}
/**
* Returns the standard deviation of all recorded durations.
*
* @return the standard deviation of all recorded durations
*/
public double stdDev() {
return convertFromNS(histogram.stdDev());
}
/**
* Returns the arithmetic mean of all recorded durations.
*
* @return the arithmetic mean of all recorded durations
*/
public double mean() {
return convertFromNS(histogram.mean());
}