scouter.server.core.app.MeterCounterManager Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.server.core.app;
import scouter.util.LinkedMap;
/**
* @author Gun Lee ([email protected]) on 2018. 8. 11.
*/
public class MeterCounterManager {
private static MeterCounterManager instance = new MeterCounterManager();
private LinkedMap meterCounterMap = new LinkedMap().setMax(10000);
public static class Key {
public int objHash;
public String counterName;
public Key(int objHash, String counterName) {
this.objHash = objHash;
this.counterName = counterName;
}
@Override
public boolean equals(Object obj) {
if (obj instanceof Key) {
Key k = (Key) obj;
return this.objHash == ((Key) obj).objHash && this.counterName.equals(((Key) obj).counterName);
}
return false;
}
@Override
public int hashCode() {
return objHash ^ counterName.hashCode();
}
}
public static MeterCounterManager getInstance() {
return instance;
}
//without syncronize, but it's ok in the key scope.
public MeterCounter getMeterCounter(int objHash, String counterName) {
Key key = new Key(objHash, counterName);
MeterCounter meterCounter = meterCounterMap.get(key);
if (meterCounter == null) {
meterCounter = new MeterCounter();
meterCounterMap.put(key, meterCounter);
}
return meterCounter;
}
}