svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / resource / impl / DefaultResourceManager.java @ 43020
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.resource.impl; |
25 | |||
26 | 42517 | dmartinezizquierdo | import java.io.File; |
27 | 40435 | jjdelcerro | import java.lang.reflect.InvocationTargetException; |
28 | import java.util.HashMap; |
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29 | import java.util.Iterator; |
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30 | import java.util.List; |
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31 | import java.util.Map; |
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32 | import java.util.Map.Entry; |
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33 | import java.util.Timer; |
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34 | import java.util.TimerTask; |
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35 | |||
36 | import org.gvsig.fmap.dal.DALLocator; |
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37 | import org.gvsig.fmap.dal.DataParameters; |
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38 | import org.gvsig.fmap.dal.exception.CopyParametersException; |
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39 | import org.gvsig.fmap.dal.exception.DataException; |
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40 | import org.gvsig.fmap.dal.exception.InitializeException; |
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41 | import org.gvsig.fmap.dal.resource.Resource; |
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42 | import org.gvsig.fmap.dal.resource.ResourceParameters; |
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43 | import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
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44 | import org.gvsig.fmap.dal.resource.exception.DisposeResorceManagerException; |
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45 | import org.gvsig.fmap.dal.resource.exception.ResourceException; |
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46 | import org.gvsig.fmap.dal.resource.exception.ResourceNotClosedOnDisposeManagerException; |
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47 | import org.gvsig.fmap.dal.resource.exception.ResourceNotRegisteredException; |
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48 | import org.gvsig.fmap.dal.resource.spi.AbstractResource; |
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49 | 42517 | dmartinezizquierdo | import org.gvsig.fmap.dal.resource.spi.MultiResource; |
50 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.resource.spi.ResourceManagerProviderServices; |
51 | import org.gvsig.fmap.dal.resource.spi.ResourceProvider; |
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52 | 43020 | jjdelcerro | import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
53 | 40435 | jjdelcerro | import org.gvsig.tools.ToolsLocator; |
54 | 42517 | dmartinezizquierdo | import org.gvsig.tools.dynobject.exception.DynFieldNotFoundException; |
55 | 40435 | jjdelcerro | import org.gvsig.tools.observer.Observer; |
56 | import org.gvsig.tools.observer.impl.DelegateWeakReferencingObservable; |
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57 | 42517 | dmartinezizquierdo | import org.slf4j.Logger; |
58 | import org.slf4j.LoggerFactory; |
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59 | 40435 | jjdelcerro | |
60 | |||
61 | public class DefaultResourceManager implements ResourceManagerProviderServices { |
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62 | |||
63 | final static private String DATA_MANAGER_RESOURCE = "Data.manager.resources"; |
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64 | final static private String DATA_MANAGER_RESOURCE_PARAMS = "Data.manager.resources.params"; |
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65 | |||
66 | // FIXME: rellenar las cadenas
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67 | private static final String DATA_MANAGER_RESOURCE_DESCRIPTION = "DAL Resources types"; |
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68 | private static final String DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION = "DAL Resources types Parameters"; |
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69 | |||
70 | 42517 | dmartinezizquierdo | private Map<String,Resource> resources = new HashMap(); |
71 | 40435 | jjdelcerro | |
72 | private DelegateWeakReferencingObservable delegateObservable = new DelegateWeakReferencingObservable(this); |
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73 | |||
74 | private Timer timer = null; |
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75 | private Logger logger; |
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76 | |||
77 | private long mlsecondsToBeIdle = 0; |
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78 | |||
79 | public DefaultResourceManager() {
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80 | /*
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81 | * Create te extensions point in te registry.
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82 | */
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83 | ToolsLocator.getExtensionPointManager().add(DATA_MANAGER_RESOURCE, |
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84 | DATA_MANAGER_RESOURCE_DESCRIPTION); |
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85 | |||
86 | ToolsLocator.getExtensionPointManager().add( |
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87 | DATA_MANAGER_RESOURCE_PARAMS, |
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88 | DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION); |
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89 | } |
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90 | |||
91 | public Logger getLogger() { |
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92 | if (this.logger == null) { |
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93 | this.logger = LoggerFactory.getLogger(this.getClass()); |
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94 | } |
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95 | return this.logger; |
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96 | } |
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97 | |||
98 | public synchronized void remove(Resource resource) |
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99 | throws DataException {
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100 | remove(resource.getName()); |
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101 | } |
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102 | |||
103 | public synchronized void remove(String name) |
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104 | throws DataException {
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105 | ResourceProvider res = (ResourceProvider) this.resources.get(name);
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106 | if (res == null){ |
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107 | throw new IllegalArgumentException("Resource not register:" + name); |
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108 | } |
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109 | if (res.getConsumersCount() < 1) { |
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110 | this.resources.remove(name);
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111 | res.notifyDispose(); |
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112 | } |
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113 | res = null;
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114 | } |
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115 | |||
116 | public synchronized Resource getResource(String key) { |
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117 | return (Resource)this.resources.get(key); |
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118 | } |
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119 | |||
120 | 42517 | dmartinezizquierdo | public synchronized Iterator<Resource> iterator() { |
121 | 40435 | jjdelcerro | return this.resources.values().iterator(); |
122 | } |
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123 | |||
124 | public void addObserver(Observer o) { |
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125 | // TODO a?adir el observador a los recursos que ya existiesen
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126 | this.delegateObservable.addObserver(o);
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127 | } |
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128 | |||
129 | public void deleteObserver(Observer o) { |
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130 | this.delegateObservable.deleteObserver(o);
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131 | } |
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132 | |||
133 | public void deleteObservers() { |
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134 | this.delegateObservable.deleteObservers();
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135 | } |
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136 | |||
137 | public synchronized void collectResources() throws |
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138 | DataException { |
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139 | ResourceProvider res; |
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140 | Iterator iter = this.resources.entrySet().iterator(); |
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141 | while (iter.hasNext()) {
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142 | Entry entry = (Entry) iter.next(); |
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143 | res = (ResourceProvider) entry.getValue(); |
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144 | if (res.getConsumersCount() < 1) { |
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145 | res.closeRequest(); |
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146 | res.notifyDispose(); |
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147 | iter.remove(); |
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148 | continue;
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149 | } |
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150 | if (mlsecondsToBeIdle > 0 |
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151 | && System.currentTimeMillis()
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152 | - res.getLastTimeUsed() > mlsecondsToBeIdle) { |
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153 | |||
154 | } |
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155 | |||
156 | } |
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157 | } |
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158 | |||
159 | private synchronized AbstractResource findResource(ResourceParameters params) { |
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160 | AbstractResource res; |
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161 | Iterator iter = this.resources.values().iterator(); |
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162 | while (iter.hasNext()) {
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163 | res = (AbstractResource) iter.next(); |
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164 | try {
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165 | if (res.isThis(params)) {
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166 | return res;
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167 | } |
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168 | } catch (ResourceException e) {
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169 | getLogger() |
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170 | .warn( |
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171 | "Se ha producido un error comprobando si se puede reutilizar el recurso.",
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172 | e); |
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173 | } catch (CopyParametersException e) {
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174 | getLogger() |
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175 | .warn( |
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176 | "Se ha producido un error comprobando si se puede reutilizar el recurso.",
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177 | e); |
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178 | } |
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179 | } |
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180 | return null; |
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181 | } |
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182 | |||
183 | private synchronized AbstractResource addResource(AbstractResource resource) |
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184 | throws AccessResourceException {
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185 | resources.put(resource.getName(), resource); |
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186 | resource.addObservers(this.delegateObservable);
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187 | return resource;
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188 | } |
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189 | |||
190 | public void startResourceCollector(long milis, Observer observer) { |
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191 | if (this.timer == null){ |
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192 | this.timer = new Timer(); |
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193 | } else{
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194 | this.timer.cancel();
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195 | } |
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196 | // TODO observer
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197 | this.timer.scheduleAtFixedRate(new TimerTask() { |
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198 | |||
199 | |||
200 | public void run() { |
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201 | try {
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202 | DALLocator.getResourceManager().collectResources(); |
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203 | } catch (DataException e) {
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204 | // TODO Notificar con el observer
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205 | } |
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206 | } |
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207 | |||
208 | }, milis, milis); |
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209 | } |
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210 | |||
211 | public void stopResourceCollector() { |
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212 | if (this.timer != null) { |
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213 | this.timer.cancel();
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214 | } |
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215 | |||
216 | } |
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217 | |||
218 | 43020 | jjdelcerro | public DataParameters createParameters(
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219 | String type,
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220 | Object[] args |
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221 | ) throws InitializeException {
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222 | try {
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223 | ResourceParameters parameters; |
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224 | if (args == null) { |
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225 | parameters = (ResourceParameters) ToolsLocator.getExtensionPointManager() |
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226 | .get(DATA_MANAGER_RESOURCE_PARAMS).create(type); |
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227 | } else {
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228 | parameters = (ResourceParameters) ToolsLocator.getExtensionPointManager() |
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229 | .get(DATA_MANAGER_RESOURCE_PARAMS).create(type, args); |
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230 | } |
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231 | if (parameters == null){ |
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232 | throw new ResourceNotRegisteredException(type); |
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233 | } |
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234 | // if( !type.equalsIgnoreCase(parameters.getTypeName()) ) {
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235 | // getLogger().info("Change default provider name of resource from {} to {}.",
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236 | // parameters.getTypeName(), type
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237 | // );
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238 | // parameters.setDynValue(DataStoreProviderServices.PROVIDER_PARAMTER_NAME, type);
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239 | // }
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240 | return parameters;
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241 | } catch (Exception e) { |
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242 | throw new InitializeException(type, e); |
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243 | } |
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244 | 40435 | jjdelcerro | } |
245 | |||
246 | public DataParameters createParameters(String type) |
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247 | throws InitializeException {
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248 | return createParameters(type, null); |
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249 | } |
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250 | |||
251 | public ResourceProvider createAddResource(String type, Object[] params) |
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252 | throws InitializeException {
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253 | return createAddResource((ResourceParameters) createParameters(type,
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254 | params)); |
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255 | } |
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256 | |||
257 | public ResourceProvider createResource(String type, Object[] params) |
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258 | throws InitializeException {
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259 | return createResource((ResourceParameters) createParameters(type,
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260 | params)); |
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261 | } |
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262 | |||
263 | public ResourceProvider createResource(ResourceParameters params)
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264 | throws InitializeException {
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265 | AbstractResource resource = this.findResource(params);
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266 | if (resource != null) { |
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267 | return resource;
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268 | } |
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269 | |||
270 | try {
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271 | |||
272 | resource = (AbstractResource) ToolsLocator |
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273 | .getExtensionPointManager().get(DATA_MANAGER_RESOURCE) |
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274 | .create( |
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275 | params.getTypeName(), new Object[] { params } |
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276 | ); |
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277 | if (resource == null) { |
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278 | throw new ResourceNotRegisteredException(params.getTypeName()); |
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279 | } |
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280 | } catch (InstantiationException e) { |
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281 | throw new InitializeException(e); |
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282 | } catch (IllegalAccessException e) { |
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283 | throw new InitializeException(e); |
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284 | } catch (SecurityException e) { |
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285 | throw new InitializeException(e); |
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286 | } catch (IllegalArgumentException e) { |
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287 | throw new InitializeException(e); |
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288 | } catch (NoSuchMethodException e) { |
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289 | throw new InitializeException(e); |
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290 | } catch (InvocationTargetException e) { |
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291 | throw new InitializeException(e); |
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292 | } |
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293 | |||
294 | return resource;
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295 | } |
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296 | |||
297 | public ResourceProvider createAddResource(ResourceParameters params)
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298 | throws InitializeException {
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299 | |||
300 | try {
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301 | 42609 | jjdelcerro | String name = params.getResurceID();
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302 | 42517 | dmartinezizquierdo | Resource res = (Resource)(this.resources.get(name));
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303 | if( res!=null ) { |
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304 | return (AbstractResource)res;
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305 | } |
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306 | 42609 | jjdelcerro | return addResource((AbstractResource) createResource(params));
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307 | 40435 | jjdelcerro | } catch (AccessResourceException e) {
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308 | throw new InitializeException(params.getTypeName(), e); |
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309 | } |
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310 | } |
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311 | |||
312 | public boolean register(String type, String description, |
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313 | Class resourceHandler, Class resourceParams) { |
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314 | |||
315 | |||
316 | ToolsLocator.getExtensionPointManager().add(DATA_MANAGER_RESOURCE, |
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317 | DATA_MANAGER_RESOURCE_DESCRIPTION).append(type, description, |
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318 | resourceHandler); |
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319 | |||
320 | ToolsLocator.getExtensionPointManager().add( |
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321 | DATA_MANAGER_RESOURCE_PARAMS, |
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322 | DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION).append(type, |
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323 | description, resourceParams); |
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324 | |||
325 | return true; |
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326 | } |
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327 | |||
328 | public List getResourceProviders() { |
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329 | return ToolsLocator.getExtensionPointManager().get(
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330 | DATA_MANAGER_RESOURCE).getNames(); |
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331 | } |
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332 | |||
333 | public synchronized void closeResources() throws DataException { |
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334 | this.collectResources();
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335 | Resource res; |
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336 | Iterator iter = this.resources.values().iterator(); |
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337 | while (iter.hasNext()) {
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338 | res = (Resource) iter.next(); |
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339 | res.closeRequest(); |
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340 | } |
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341 | } |
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342 | |||
343 | public synchronized void dispose() throws DisposeResorceManagerException { |
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344 | 41256 | jjdelcerro | DisposeResorceManagerException exception = new DisposeResorceManagerException();
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345 | 40435 | jjdelcerro | |
346 | 41256 | jjdelcerro | try {
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347 | this.collectResources();
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348 | } catch (DataException e) {
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349 | exception.add(e); |
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350 | } |
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351 | Resource res; |
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352 | Iterator iter = this.resources.values().iterator(); |
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353 | while (iter.hasNext()) {
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354 | res = (Resource) iter.next(); |
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355 | try {
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356 | if (res.openCount() > 0) { |
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357 | exception.add( |
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358 | new ResourceNotClosedOnDisposeManagerException(
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359 | res)); |
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360 | } |
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361 | res.closeRequest(); |
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362 | iter.remove(); |
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363 | } catch (ResourceException e) {
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364 | exception.add(e); |
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365 | } |
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366 | } |
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367 | 40435 | jjdelcerro | |
368 | 41256 | jjdelcerro | this.resources = null; |
369 | this.delegateObservable.deleteObservers();
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370 | this.delegateObservable = null; |
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371 | 40435 | jjdelcerro | |
372 | 41256 | jjdelcerro | if (!exception.isEmpty()) {
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373 | throw exception;
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374 | } |
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375 | } |
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376 | 40435 | jjdelcerro | |
377 | public int getTimeToBeIdle() { |
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378 | if (mlsecondsToBeIdle == 0) { |
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379 | return 0; |
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380 | } |
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381 | return (int) (mlsecondsToBeIdle / 1000); |
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382 | } |
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383 | |||
384 | public void setTimeToBeIdle(int seconds) { |
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385 | if (seconds < 0) { |
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386 | throw new IllegalArgumentException("seconds must be >= 0"); |
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387 | } |
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388 | mlsecondsToBeIdle = seconds * 1000;
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389 | } |
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390 | } |