org.apache.inlong.common.metric.MetricItemSet 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.inlong.common.metric;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* MetricItemSet
*/
public abstract class MetricItemSet implements MetricItemSetMBean {
protected String name;
protected Map itemMap = new ConcurrentHashMap<>();
/**
* Constructor
*/
public MetricItemSet(String name) {
this.name = name;
}
/**
* getName
*/
public String getName() {
return name;
}
/**
* createItem
*/
protected abstract T createItem();
/**
* findMetricItem
*/
public T findMetricItem(Map dimensions) {
String key = MetricUtils.getDimensionsKey(dimensions);
T currentItem = this.itemMap.get(key);
if (currentItem != null) {
return currentItem;
}
currentItem = createItem();
currentItem.setDimensions(dimensions);
T oldItem = this.itemMap.putIfAbsent(key, currentItem);
return (oldItem == null) ? currentItem : oldItem;
}
/**
* snapshot
*/
@Override
public List snapshot() {
Map oldItemMap = itemMap;
this.itemMap = new ConcurrentHashMap<>();
MetricUtils.sleepOneInterval();
List result = new ArrayList<>(oldItemMap.size());
result.addAll(oldItemMap.values());
return result;
}
}