fish.payara.microprofile.metrics.MetricUnitsUtils Maven / Gradle / Ivy
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package fish.payara.microprofile.metrics;
import org.eclipse.microprofile.metrics.Metadata;
import org.eclipse.microprofile.metrics.MetricUnits;
/**
* Utilities around {@link MetricUnits}.
*
* @author Jan Bernitt
*/
public final class MetricUnitsUtils {
private MetricUnitsUtils() {
throw new UnsupportedOperationException("util");
}
public static String baseUnit(String unit) {
switch (unit) {
case MetricUnits.BITS:
case MetricUnits.KILOBITS:
case MetricUnits.MEGABITS:
case MetricUnits.GIGABITS:
case MetricUnits.KIBIBITS:
case MetricUnits.MEBIBITS:
case MetricUnits.GIBIBITS:
case MetricUnits.BYTES:
case MetricUnits.KILOBYTES:
case MetricUnits.MEGABYTES:
case MetricUnits.GIGABYTES:
return MetricUnits.BYTES;
case MetricUnits.NANOSECONDS:
case MetricUnits.MICROSECONDS:
case MetricUnits.MILLISECONDS:
case MetricUnits.SECONDS:
case MetricUnits.MINUTES:
case MetricUnits.HOURS:
case MetricUnits.DAYS:
return MetricUnits.SECONDS;
default:
return unit;
}
}
public static Number scaleToBaseUnit(Number value, Metadata metadata) {
if (!metadata.unit().isPresent()) {
return value;
}
String unit = metadata.getUnit();
return scaleToBaseUnit(value, unit);
}
public static Number scaleToBaseUnit(Number value, String unit) {
if (unit == null || unit.isEmpty() || unit.equals(MetricUnits.NONE)) {
return value;
}
switch (unit) {
// bytes from bits
case MetricUnits.BITS: return value.longValue() / 8d;
case MetricUnits.KILOBITS: return value.doubleValue() * 1000d / 8d;
case MetricUnits.MEGABITS: return value.doubleValue() * 1000d * 1000d / 8d;
case MetricUnits.GIGABITS: return value.doubleValue() * 1000d * 1000d * 1000d / 8d;
case MetricUnits.MEBIBITS: return value.doubleValue() * 1024d * 1024d / 8d;
case MetricUnits.GIBIBITS: return value.doubleValue() * 1024d * 1024d * 1024d / 8d;
// bytes from bytes
case MetricUnits.BYTES: return value;
case MetricUnits.KILOBYTES: return value.doubleValue() * 1000d;
case MetricUnits.MEGABYTES: return value.doubleValue() * 1000d * 1000d;
// seconds from time unit
case MetricUnits.NANOSECONDS: return value.longValue() / 1000d / 1000d / 1000d;
case MetricUnits.MICROSECONDS: return value.longValue() / 1000d / 1000d;
case MetricUnits.MILLISECONDS: return value.longValue() / 1000d;
case MetricUnits.SECONDS: return value;
case MetricUnits.MINUTES: return value.doubleValue() * 60d;
case MetricUnits.HOURS: return value.doubleValue() * 60d * 60d;
case MetricUnits.DAYS: return value.doubleValue() * 60d * 60d * 24d;
// others
case MetricUnits.KIBIBITS:
case MetricUnits.GIGABYTES:
case MetricUnits.PERCENT:
case MetricUnits.PER_SECOND:
default:
return value;
}
}
}