/*
* Copyright 2017 NAVER Corp.
*
* 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 com.navercorp.pinpoint.profiler.monitor.metric.rpc;
import com.navercorp.pinpoint.common.trace.ServiceType;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* @author emeroad
*/
public class DefaultRpcMetric implements RpcMetric {
private final ServiceType serviceType;
// TODO Change to LRU cache. It could makes numbers incorrect but prevents OOM.
private final ConcurrentMap<String, Histogram> histogramMap = new ConcurrentHashMap<String, Histogram>();
public DefaultRpcMetric(ServiceType serviceType) {
if (serviceType == null) {
throw new NullPointerException("serviceType must not be null");
}
this.serviceType = serviceType;
}
@Override
public void addResponseTime(String destinationId, int millis, boolean error) {
if (destinationId == null) {
throw new NullPointerException("destinationId must not be null");
}
Histogram histogram = getHistogram0(destinationId);
histogram.addResponseTime(millis, error);
}
private Histogram getHistogram0(String destinationId) {
final Histogram hit = histogramMap.get(destinationId);
if (hit != null) {
return hit;
}
final Histogram histogram = createHistogram();
final Histogram exist = histogramMap.putIfAbsent(destinationId, histogram);
if (exist != null) {
return exist;
}
return histogram;
}
private LongAdderHistogram createHistogram() {
return new LongAdderHistogram(serviceType);
}
public List<HistogramSnapshot> createSnapshotList() {
final List<HistogramSnapshot> histogramSnapshotList = new ArrayList<HistogramSnapshot>(histogramMap.size() + 4);
for (Histogram histogram : histogramMap.values()) {
final HistogramSnapshot snapshot = histogram.createSnapshot();
histogramSnapshotList.add(snapshot);
}
return histogramSnapshotList;
}
}