org.apache.pulsar.common.stats.MetricsUtil Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.common.stats;
import java.util.concurrent.TimeUnit;
/**
* Utility class for metrics.
*/
public class MetricsUtil {
private static final double NANOS_IN_SECOND = TimeUnit.SECONDS.toNanos(1);
/**
* Convert a duration to seconds. Unlike {@link TimeUnit#toSeconds(long)}, this method preserves fractional
* precision.
*
* @param duration the duration
* @param timeUnit the time unit
* @return the duration in seconds
*/
public static double convertToSeconds(long duration, TimeUnit timeUnit) {
return timeUnit.toNanos(duration) / NANOS_IN_SECOND;
}
}