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org.apache.jcs.access.monitor.MonitorAccess |
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1 | package org.apache.jcs.access.monitor; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import java.io.Serializable; |
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23 | import java.util.ArrayList; |
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24 | import java.util.Arrays; |
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25 | import java.util.Hashtable; |
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26 | import java.util.StringTokenizer; |
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27 | ||
28 | import org.apache.commons.logging.Log; |
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29 | import org.apache.commons.logging.LogFactory; |
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30 | import org.apache.jcs.access.GroupCacheAccess; |
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31 | import org.apache.jcs.engine.CacheConstants; |
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32 | import org.apache.jcs.engine.behavior.ICache; |
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33 | import org.apache.jcs.engine.control.CompositeCacheManager; |
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34 | ||
35 | /** |
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36 | * Exposes the simple monitoring methods to the public in a simple manner. |
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37 | */ |
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38 | public class MonitorAccess |
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39 | implements Serializable |
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40 | { |
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41 | /** Don't change. */ |
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42 | private static final long serialVersionUID = 1002037665133774391L; |
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43 | ||
44 | /** The logger. */ |
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45 | 0 | private static final Log log = LogFactory.getLog( MonitorAccess.class ); |
46 | ||
47 | /** Description of the Field */ |
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48 | protected CompositeCacheManager cacheMgr; |
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49 | ||
50 | /** Constructor for the MonitorAccess object */ |
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51 | public MonitorAccess() |
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52 | 0 | { |
53 | 0 | synchronized ( GroupCacheAccess.class ) |
54 | { |
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55 | 0 | if ( this.cacheMgr == null ) |
56 | { |
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57 | 0 | this.cacheMgr = CompositeCacheManager.getInstance(); |
58 | } |
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59 | 0 | } |
60 | 0 | } |
61 | ||
62 | /** |
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63 | * Removes all. |
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64 | * <p> |
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65 | * @param cacheName |
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66 | * @param key |
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67 | * @return an informative message about what was deleted. |
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68 | */ |
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69 | public String delete( String cacheName, String key ) |
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70 | { |
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71 | // some junk to return for a synchronous call |
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72 | 0 | String result = ""; |
73 | ||
74 | try |
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75 | { |
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76 | 0 | ICache cache = this.cacheMgr.getCache( cacheName ); |
77 | ||
78 | 0 | if ( key != null ) |
79 | { |
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80 | 0 | if ( key.toUpperCase().equals( "ALL" ) ) |
81 | { |
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82 | 0 | cache.removeAll(); |
83 | ||
84 | 0 | if ( log.isDebugEnabled() ) |
85 | { |
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86 | 0 | log.debug( "Removed all elements from " + cacheName ); |
87 | } |
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88 | 0 | result = "key = " + key; |
89 | 0 | } |
90 | else |
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91 | { |
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92 | 0 | if ( log.isDebugEnabled() ) |
93 | { |
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94 | 0 | log.debug( "key = " + key ); |
95 | } |
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96 | 0 | result = "key = " + key; |
97 | 0 | StringTokenizer toke = new StringTokenizer( key, "_" ); |
98 | ||
99 | 0 | while ( toke.hasMoreElements() ) |
100 | { |
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101 | 0 | String temp = (String) toke.nextElement(); |
102 | 0 | cache.remove( key ); |
103 | ||
104 | 0 | if ( log.isDebugEnabled() ) |
105 | { |
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106 | 0 | log.debug( "Removed " + temp + " from " + cacheName ); |
107 | } |
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108 | 0 | } |
109 | } |
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110 | 0 | } |
111 | else |
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112 | { |
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113 | 0 | result = "key is null"; |
114 | } |
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115 | ||
116 | } |
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117 | 0 | catch ( Exception e ) |
118 | { |
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119 | 0 | log.error( e ); |
120 | 0 | } |
121 | ||
122 | 0 | return result; |
123 | } |
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124 | ||
125 | /** |
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126 | * Gives basic info on all the regions. Better to use getStats. |
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127 | * <p> |
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128 | * @return list of hashtables with keys (name,size,stat) |
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129 | */ |
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130 | public ArrayList overview() |
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131 | { |
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132 | 0 | ArrayList data = new ArrayList(); |
133 | ||
134 | 0 | String[] list = this.cacheMgr.getCacheNames(); |
135 | 0 | Arrays.sort( list ); |
136 | 0 | for ( int i = 0; i < list.length; i++ ) |
137 | { |
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138 | 0 | Hashtable ht = new Hashtable(); |
139 | 0 | String name = list[i]; |
140 | 0 | ht.put( "name", name ); |
141 | ||
142 | 0 | ICache cache = this.cacheMgr.getCache( name ); |
143 | 0 | int size = cache.getSize(); |
144 | 0 | ht.put( "size", Integer.toString( size ) ); |
145 | ||
146 | 0 | int status = cache.getStatus(); |
147 | 0 | String stat = status == CacheConstants.STATUS_ALIVE |
148 | ? "ALIVE" |
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149 | : status == CacheConstants.STATUS_DISPOSED |
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150 | ? "DISPOSED" |
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151 | : status == CacheConstants.STATUS_ERROR |
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152 | ? "ERROR" |
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153 | : "UNKNOWN"; |
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154 | 0 | ht.put( "stat", stat ); |
155 | ||
156 | 0 | data.add( ht ); |
157 | } |
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158 | 0 | return data; |
159 | } |
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160 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |