private static void printStatistic(
GraalTruffleRuntime rt, String label, IntSummaryStatistics value) {
rt.log(
String.format(
" %-50s: count=%4d, sum=%8d, min=%8d, average=%12.2f, max=%8d ",
label,
value.getCount(),
value.getSum(),
value.getMin(),
value.getAverage(),
value.getMax()));
}
/** {@inheritDoc} */
@Override
public RequestAggregationValues aggregate(RequestCollector requests) {
IntSummaryStatistics stats =
requests
.getReqTimestamps()
.stream()
.collect(
Collectors.groupingBy(
timestamp -> DateUtils.round(new Date(timestamp), timestampAggregation),
Collectors.counting()))
.values()
.stream()
.mapToInt(p -> toInt(p))
.summaryStatistics();
return new RequestAggregationValuesImpl(
stats.getMin(), stats.getMax(), stats.getAverage(), stats.getSum(), stats.getCount());
}