| /* |
| * 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.geode.management.internal.beans.stats; |
| |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicLongArray; |
| |
| import org.apache.geode.management.internal.FederationComponent; |
| |
| public class LongStatsDeltaAggregator { |
| |
| private AtomicLongArray prevCounters; |
| |
| private AtomicLongArray currCounters; |
| |
| private List<String> keys; |
| |
| public LongStatsDeltaAggregator(List<String> keys) { |
| this.keys = keys; |
| prevCounters = new AtomicLongArray(keys.size()); |
| currCounters = new AtomicLongArray(keys.size()); |
| initializeArray(currCounters); |
| } |
| |
| public void aggregate(FederationComponent newState, FederationComponent oldState) { |
| incData(newState, oldState);// Only increase the value. No need to decrease |
| // when a |
| // member goes away. |
| } |
| |
| private void incData(FederationComponent newComp, FederationComponent oldComp) { |
| |
| Map<String, Object> newState = (newComp != null ? newComp.getObjectState() : null); |
| Map<String, Object> oldState; |
| |
| if (oldComp != null && oldComp.getOldState().size() > 0) { |
| oldState = oldComp.getOldState(); |
| } else { |
| oldState = (oldComp != null ? oldComp.getObjectState() : null); |
| } |
| |
| if (newState != null) { |
| for (int index = 0; index < keys.size(); index++) { |
| prevCounters.set(index, currCounters.get(index)); |
| Long newVal = (Long) newState.get(keys.get(index)); |
| |
| if (newVal == null) { |
| continue; |
| } |
| |
| Long oldVal = 0L; |
| if (oldState != null) { |
| Object val = oldState.get(keys.get(index)); |
| if (val != null) { |
| oldVal = (Long) val; |
| } |
| |
| } |
| currCounters.addAndGet(index, newVal - oldVal); |
| } |
| } |
| } |
| |
| public long getDelta(String key) { |
| int index = keys.indexOf(key); |
| if (index == -1) { |
| return 0; |
| } |
| return currCounters.get(keys.indexOf(key)) - prevCounters.get(keys.indexOf(key)); |
| } |
| |
| private void initializeArray(AtomicLongArray arr) { |
| for (int i = 0; i < arr.length(); i++) { |
| arr.set(i, Long.valueOf(0)); |
| } |
| } |
| } |