/**
* Copyright 2017 Pivotal Software, Inc.
*
* Licensed 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.springframework.metrics.instrument.prometheus;
import io.prometheus.client.Summary;
import org.springframework.metrics.instrument.Clock;
import org.springframework.metrics.instrument.internal.AbstractTimer;
import java.util.concurrent.TimeUnit;
public class PrometheusTimer extends AbstractTimer {
private Summary.Child summary;
public PrometheusTimer(String name, Summary.Child summary, Clock clock) {
super(name, clock);
this.summary = summary;
}
@Override
public void record(long amount, TimeUnit unit) {
if (amount >= 0) {
final double nanos = TimeUnit.NANOSECONDS.convert(amount, unit);
// Prometheus prefers to receive everything in base units, i.e. seconds
summary.observe(nanos / 10e8);
}
}
@Override
public long count() {
return (long) summary.get().count;
}
@Override
public double totalTime(TimeUnit unit) {
return secondsToUnit(summary.get().sum, unit);
}
}