/*
* Copyright 2012-2017 the original author or authors.
*
* 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.boot.actuate.endpoint;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.springframework.boot.actuate.metrics.Metric;
import org.springframework.boot.actuate.metrics.rich.RichGauge;
import org.springframework.boot.actuate.metrics.rich.RichGaugeReader;
import org.springframework.util.Assert;
/**
* {@link PublicMetrics} exposed from a {@link RichGaugeReader}.
*
* @author Johannes Edmeier
* @since 1.2
*/
public class RichGaugeReaderPublicMetrics implements PublicMetrics {
private final RichGaugeReader richGaugeReader;
public RichGaugeReaderPublicMetrics(RichGaugeReader richGaugeReader) {
Assert.notNull(richGaugeReader, "RichGaugeReader must not be null");
this.richGaugeReader = richGaugeReader;
}
@Override
public Collection<Metric<?>> metrics() {
List<Metric<?>> result = new ArrayList<>();
for (RichGauge richGauge : this.richGaugeReader.findAll()) {
result.addAll(convert(richGauge));
}
return result;
}
private List<Metric<?>> convert(RichGauge gauge) {
List<Metric<?>> result = new ArrayList<>(6);
result.add(new Metric<>(gauge.getName() + RichGauge.AVG, gauge.getAverage()));
result.add(new Metric<>(gauge.getName() + RichGauge.VAL, gauge.getValue()));
result.add(new Metric<>(gauge.getName() + RichGauge.MIN, gauge.getMin()));
result.add(new Metric<>(gauge.getName() + RichGauge.MAX, gauge.getMax()));
result.add(new Metric<>(gauge.getName() + RichGauge.ALPHA, gauge.getAlpha()));
result.add(new Metric<>(gauge.getName() + RichGauge.COUNT, gauge.getCount()));
return result;
}
}