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org.apache.jcs.auxiliary.lateral.socket.tcp.LateralTCPCacheFactory |
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1 | package org.apache.jcs.auxiliary.lateral.socket.tcp; |
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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.util.ArrayList; |
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23 | import java.util.StringTokenizer; |
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24 | ||
25 | import org.apache.commons.logging.Log; |
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26 | import org.apache.commons.logging.LogFactory; |
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27 | import org.apache.jcs.auxiliary.AuxiliaryCache; |
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28 | import org.apache.jcs.auxiliary.AuxiliaryCacheAttributes; |
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29 | import org.apache.jcs.auxiliary.lateral.LateralCacheAbstractFactory; |
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30 | import org.apache.jcs.auxiliary.lateral.LateralCacheNoWait; |
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31 | import org.apache.jcs.auxiliary.lateral.LateralCacheNoWaitFacade; |
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32 | import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheAttributes; |
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33 | import org.apache.jcs.auxiliary.lateral.socket.tcp.behavior.ITCPLateralCacheAttributes; |
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34 | import org.apache.jcs.auxiliary.lateral.socket.tcp.discovery.UDPDiscoveryManager; |
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35 | import org.apache.jcs.auxiliary.lateral.socket.tcp.discovery.UDPDiscoveryService; |
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36 | import org.apache.jcs.engine.behavior.ICache; |
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37 | import org.apache.jcs.engine.behavior.ICompositeCacheManager; |
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38 | ||
39 | /** |
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40 | * Constructs a LateralCacheNoWaitFacade for the given configuration. Each |
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41 | * lateral service / local relationship is managed by one manager. This manager |
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42 | * can have multiple caches. The remote relationships are consolidated and |
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43 | * restored via these managers. |
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44 | * <p> |
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45 | * The facade provides a front to the composite cache so the implementation is |
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46 | * transparent. |
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47 | * |
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48 | */ |
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49 | 14 | public class LateralTCPCacheFactory |
50 | extends LateralCacheAbstractFactory |
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51 | { |
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52 | 28 | private final static Log log = LogFactory.getLog( LateralTCPCacheFactory.class ); |
53 | ||
54 | /* |
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55 | * (non-Javadoc) |
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56 | * |
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57 | * @see org.apache.jcs.auxiliary.AuxiliaryCacheFactory#createCache(org.apache.jcs.auxiliary.AuxiliaryCacheAttributes, |
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58 | * org.apache.jcs.engine.behavior.ICompositeCacheManager) |
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59 | */ |
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60 | public AuxiliaryCache createCache( AuxiliaryCacheAttributes iaca, ICompositeCacheManager cacheMgr ) |
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61 | { |
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62 | 27 | ITCPLateralCacheAttributes lac = (ITCPLateralCacheAttributes) iaca; |
63 | 27 | ArrayList noWaits = new ArrayList(); |
64 | ||
65 | // pars up the tcp servers and set the tcpServer value and |
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66 | // get the manager and then get the cache |
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67 | // no servers are required. |
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68 | 27 | if ( lac.getTcpServers() != null ) |
69 | { |
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70 | 27 | StringTokenizer it = new StringTokenizer( lac.getTcpServers(), "," ); |
71 | 27 | if ( log.isDebugEnabled() ) |
72 | { |
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73 | 0 | log.debug( "Configured for [" + it.countTokens() + "] servers." ); |
74 | } |
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75 | 53 | while ( it.hasMoreElements() ) |
76 | { |
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77 | 27 | String server = (String) it.nextElement(); |
78 | 27 | if ( log.isDebugEnabled() ) |
79 | { |
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80 | 0 | log.debug( "tcp server = " + server ); |
81 | } |
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82 | 27 | ITCPLateralCacheAttributes lacC = (ITCPLateralCacheAttributes) lac.copy(); |
83 | 27 | lacC.setTcpServer( server ); |
84 | 27 | LateralTCPCacheManager lcm = LateralTCPCacheManager.getInstance( lacC, cacheMgr ); |
85 | 27 | ICache ic = lcm.getCache( lacC.getCacheName() ); |
86 | 26 | if ( ic != null ) |
87 | { |
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88 | 26 | noWaits.add( ic ); |
89 | 26 | } |
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( "noWait is null, no lateral connection made" ); |
95 | } |
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96 | } |
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97 | 26 | } |
98 | } |
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99 | ||
100 | 26 | createListener( (ILateralCacheAttributes) iaca, cacheMgr ); |
101 | ||
102 | // create the no wait facade. |
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103 | 26 | LateralCacheNoWaitFacade lcnwf = new LateralCacheNoWaitFacade( (LateralCacheNoWait[]) noWaits |
104 | .toArray( new LateralCacheNoWait[0] ), (ILateralCacheAttributes)iaca ); |
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105 | ||
106 | // create udp discovery if available. |
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107 | 26 | createDiscoveryService( lac, lcnwf, cacheMgr ); |
108 | ||
109 | 26 | return lcnwf; |
110 | } |
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111 | ||
112 | /* |
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113 | * (non-Javadoc) |
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114 | * |
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115 | * @see org.apache.jcs.auxiliary.lateral.LateralCacheAbstractFactory#createListener(org.apache.jcs.auxiliary.lateral.LateralCacheAttributes, |
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116 | * org.apache.jcs.engine.behavior.ICompositeCacheManager) |
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117 | */ |
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118 | public void createListener( ILateralCacheAttributes lac, ICompositeCacheManager cacheMgr ) |
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119 | { |
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120 | 26 | ITCPLateralCacheAttributes attr = (ITCPLateralCacheAttributes) lac; |
121 | // don't create a listener if we are not receiving. |
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122 | 26 | if ( attr.isReceive() ) |
123 | { |
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124 | 26 | if ( log.isInfoEnabled() ) |
125 | { |
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126 | 26 | log.info( "Creating listener for " + lac ); |
127 | } |
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128 | ||
129 | try |
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130 | { |
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131 | // make a listener. if one doesn't exist |
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132 | 26 | LateralTCPListener.getInstance( attr, cacheMgr ); |
133 | } |
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134 | 0 | catch ( Exception e ) |
135 | { |
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136 | 0 | log.error( "Problem creating lateral listener", e ); |
137 | 26 | } |
138 | 0 | } |
139 | else |
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140 | { |
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141 | 0 | if ( log.isDebugEnabled() ) |
142 | { |
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143 | 0 | log.debug( "Not creating a listener since we are not receiving." ); |
144 | } |
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145 | } |
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146 | 26 | } |
147 | ||
148 | /** |
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149 | * Creates the discovery service. Only creates this for tcp laterals right |
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150 | * now. |
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151 | * |
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152 | * @param lac |
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153 | * ITCPLateralCacheAttributes |
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154 | * @param lcnwf |
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155 | * @param cacheMgr |
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156 | * @return null if none is created. |
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157 | */ |
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158 | private UDPDiscoveryService createDiscoveryService( ITCPLateralCacheAttributes lac, LateralCacheNoWaitFacade lcnwf, |
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159 | ICompositeCacheManager cacheMgr ) |
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160 | { |
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161 | 26 | UDPDiscoveryService discovery = null; |
162 | ||
163 | // create the UDP discovery for the TCP lateral |
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164 | 26 | if ( lac.isUdpDiscoveryEnabled() ) |
165 | { |
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166 | // need a factory for this so it doesn't |
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167 | // get dereferenced, also we don't want one for every region. |
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168 | 26 | discovery = UDPDiscoveryManager.getInstance().getService( lac, cacheMgr ); |
169 | ||
170 | 26 | discovery.addNoWaitFacade( lcnwf, lac.getCacheName() ); |
171 | ||
172 | 26 | if ( log.isInfoEnabled() ) |
173 | { |
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174 | 26 | log.info( "Created UDPDiscoveryService for TCP lateral cache." ); |
175 | } |
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176 | } |
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177 | 26 | return discovery; |
178 | } |
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179 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |