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. 030 * 031 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $ 032 */ 033 034 public class StatsImpl implements Stats, Serializable { 035 private final Map <String,StatisticImpl> stats = new HashMap<String,StatisticImpl>(); 036 037 public StatsImpl() { 038 } 039 040 protected void addStat(String name, StatisticImpl value) { 041 stats.put(name, value); 042 } 043 044 /** 045 * Used when the available statistics are dynamic (e.g. depend on the 046 * current clients of the service, etc.). 047 * 048 * @param name The statistic to remove 049 */ 050 protected void removeStat(String name) { 051 stats.remove(name); 052 } 053 054 /** 055 * Set the startTime for all statistics to System.currentTimeMillis() 056 */ 057 public void setStartTime() { 058 long now = System.currentTimeMillis(); 059 for (StatisticImpl item : stats.values()) { 060 item.setStartTime(now); 061 } 062 } 063 064 /** 065 * Set the startTime for all statistics to the given value 066 * @param time 067 */ 068 public void setStartTime(long time) { 069 for (StatisticImpl item : stats.values()) { 070 item.setStartTime(time); 071 } 072 } 073 074 /** 075 * Set the lastSampleTime for all statistics to System.currentTimeMillis() 076 */ 077 public void setLastSampleTime() { 078 long now = System.currentTimeMillis(); 079 for (StatisticImpl item : stats.values()) { 080 item.setLastSampleTime(now); 081 } 082 } 083 084 /* 085 * Gets a Statistic by name 086 * @see javax.management.j2ee.statistics.Stats#getStatistic(java.lang.String) 087 */ 088 public Statistic getStatistic(String statisticName) { 089 return (Statistic)stats.get(statisticName); 090 } 091 092 /* 093 * Returns a list of names of statistics 094 * @see javax.management.j2ee.statistics.Stats#getStatisticNames() 095 */ 096 public String[] getStatisticNames() { 097 return (String[]) stats.keySet().toArray(new String[stats.size()]); 098 } 099 100 /* 101 * Returns a list of all the Statistic objects supported by this Stats object 102 * @see javax.management.j2ee.statistics.Stats#getStatistics() 103 */ 104 public Statistic[] getStatistics() { 105 String[] names = getStatisticNames(); 106 Statistic[] result = new Statistic[names.length]; 107 for (int i = 0; i < names.length; i++) { 108 result[i] = (Statistic) stats.get(names[i]); 109 } 110 return result; 111 } 112 }