001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.geronimo.management.stats; 018 019 import java.io.Serializable; 020 import java.util.HashMap; 021 import java.util.Map; 022 import javax.management.j2ee.statistics.Statistic; 023 import javax.management.j2ee.statistics.Stats; 024 025 /** 026 * Geronimo implementation of the JSR-77 Stats interface. Dynamically tracks 027 * available statistics for its subclasses, to make it easy to iterate 028 * available statistics without knowing exactly what kind of class you're 029 * looking at. Not sure when you'd want to do that, but hey. 030 * 031 * @version $Rev: 503407 $ $Date: 2007-02-04 08:57:40 -0500 (Sun, 04 Feb 2007) $ 032 */ 033 public class StatsImpl implements Stats, Serializable { 034 private final Map <String,StatisticImpl> stats = new HashMap<String,StatisticImpl>(); 035 036 public StatsImpl() { 037 } 038 039 protected void addStat(String name, StatisticImpl value) { 040 stats.put(name, value); 041 } 042 043 /** 044 * Used when the available statistics are dynamic (e.g. depend on the 045 * current clients of the service, etc.). 046 * 047 * @param name The statistic to remove 048 */ 049 protected void removeStat(String name) { 050 stats.remove(name); 051 } 052 053 public void setStartTime() { 054 long now = System.currentTimeMillis(); 055 for (StatisticImpl item : stats.values()) { 056 item.setStartTime(now); 057 } 058 } 059 060 public void setLastSampleTime() { 061 long now = System.currentTimeMillis(); 062 for (StatisticImpl item : stats.values()) { 063 item.setLastSampleTime(now); 064 } 065 } 066 067 public Statistic getStatistic(String statisticName) { 068 return (Statistic)stats.get(statisticName); 069 } 070 071 public String[] getStatisticNames() { 072 return (String[]) stats.keySet().toArray(new String[stats.size()]); 073 } 074 075 public Statistic[] getStatistics() { 076 String[] names = getStatisticNames(); 077 Statistic[] result = new Statistic[names.length]; 078 for (int i = 0; i < names.length; i++) { 079 result[i] = (Statistic) stats.get(names[i]); 080 } 081 return result; 082 } 083 }