| /** |
| * 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 com.alibaba.jstorm.common.metric.old.operator.merger; |
| |
| import com.alibaba.jstorm.common.metric.old.Histogram; |
| |
| import java.util.Collection; |
| |
| public class AvgMerger implements Merger<Histogram.HistorgramPair> { |
| private static final long serialVersionUID = -3892281208959055221L; |
| |
| @Override |
| public Histogram.HistorgramPair merge(Collection<Histogram.HistorgramPair> objs, Histogram.HistorgramPair unflushed, Object... others) { |
| // TODO Auto-generated method stub |
| double sum = 0.0d; |
| long times = 0l; |
| |
| if (unflushed != null) { |
| sum = sum + unflushed.getSum(); |
| times = times + unflushed.getTimes(); |
| } |
| |
| for (Histogram.HistorgramPair item : objs) { |
| if (item == null) { |
| continue; |
| } |
| sum = sum + item.getSum(); |
| times = times + item.getTimes(); |
| } |
| |
| return new Histogram.HistorgramPair(sum, times); |
| } |
| |
| } |