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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.utils;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Parses a string on the form:
*
* [numbers]\s*[unit]?
*
* Where numbers is a double, and unit is one of:
* d - days
* m - minutes
* s - seconds
* ms - milliseconds
*
* Default is seconds.
*/
public class Duration {
private static final Pattern pattern = Pattern.compile("([0-9\\.]+)\\s*([a-z]+)?");
private static final Map<String, Integer> unitMultiplier = new HashMap<>();
static {
unitMultiplier.put("s", 1000);
unitMultiplier.put("d", 1000 * 3600 * 24);
unitMultiplier.put("ms", 1);
unitMultiplier.put("m", 60 * 1000);
unitMultiplier.put("h", 60 * 60 * 1000);
}
long value;
public Duration(String value) {
Matcher matcher = pattern.matcher(value);
if (!matcher.matches()) {
throw new IllegalArgumentException("Illegal duration format: " + value);
}
double num = Double.parseDouble(matcher.group(1));
String unit = matcher.group(2);
if (unit != null) {
Integer multiplier = unitMultiplier.get(unit);
if (multiplier == null) {
throw new IllegalArgumentException("Unknown time unit: " + unit + " in time value " + value);
}
num *= multiplier;
} else {
num *= 1000;
}
this.value = (long)num;
}
public double getSeconds() {
return value / 1000.0;
}
public long getMilliSeconds() {
return value;
}
}
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