svn-gvsig-desktop / branches / MULTITHREADING_DEVELOPMENT / libraries / libRemoteServices / src / org / gvsig / remoteClient / taskplanning / retrieving / URLRetrieveTask.java @ 5245
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1 | 5156 | jaume | /*
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2 | * Created on 01-oct-2005
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3 | */
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4 | package org.gvsig.remoteClient.taskplanning.retrieving; |
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5 | |||
6 | import java.io.BufferedOutputStream; |
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7 | import java.io.DataOutputStream; |
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8 | import java.io.File; |
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9 | import java.io.FileOutputStream; |
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10 | import java.io.IOException; |
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11 | import java.io.InputStream; |
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12 | import java.net.MalformedURLException; |
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13 | import java.net.URL; |
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14 | 5230 | jaume | import java.util.Iterator; |
15 | import java.util.Vector; |
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16 | 5156 | jaume | |
17 | import org.gvsig.remoteClient.taskplanning.IRunnableTask; |
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18 | |||
19 | /**
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20 | * Clase para bajar ficheros en un thread independiente.
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21 | * La idea (y parte del c?digo) est? tomada de EarthFlicks
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22 | * @author Luis W. Sevilla (sevilla_lui@gva.es)
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23 | * @see http://today.java.net/lpt/a/212
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24 | */
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25 | public class URLRetrieveTask implements IRunnableTask { |
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26 | 5230 | jaume | |
27 | 5156 | jaume | private boolean running, cancelled; |
28 | private URLRequest request;
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29 | 5230 | jaume | private InputStream is; |
30 | 5156 | jaume | |
31 | /**
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32 | *
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33 | */
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34 | 5245 | jaume | public URLRetrieveTask(URLRequest request) {
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35 | 5156 | jaume | this.request = request;
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36 | running = cancelled = false;
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37 | } |
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38 | |||
39 | |||
40 | public void execute() { |
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41 | 5245 | jaume | request.setStatus(RetrieveEvent.NOT_STARTED); |
42 | 5230 | jaume | cancelled = false;
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43 | running= true;
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44 | |||
45 | 5180 | jaume | long t = System.currentTimeMillis(); |
46 | File f = new File(request.getFileName()+System.currentTimeMillis()); |
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47 | while (f.exists()) {
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48 | t++; |
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49 | f = new File(request.getFileName()+t); |
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50 | } |
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51 | 5156 | jaume | URL url;
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52 | try {
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53 | 5245 | jaume | request.setStatus(RetrieveEvent.CONNECTING); |
54 | |||
55 | 5156 | jaume | url = request.getUrl(); |
56 | 5230 | jaume | request.setFileName(f.getAbsolutePath()); |
57 | 5156 | jaume | System.out.println("downloading '"+url+"' to: "+f.getAbsolutePath()); |
58 | |||
59 | DataOutputStream dos = new DataOutputStream( new BufferedOutputStream(new FileOutputStream(f))); |
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60 | byte[] buffer = new byte[1024*256]; |
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61 | is = url.openStream(); |
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62 | 5245 | jaume | request.setStatus(RetrieveEvent.TRANSFERRING); |
63 | 5156 | jaume | if (!cancelled) {
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64 | long readed = 0; |
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65 | for (int i = is.read(buffer); !cancelled && i>0; i = is.read(buffer)){ |
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66 | dos.write(buffer, 0, i);
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67 | readed += i; |
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68 | } |
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69 | |||
70 | dos.close(); |
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71 | 5180 | jaume | } |
72 | |||
73 | if (cancelled) {
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74 | // Bad incomplete file, delete it.
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75 | System.out.println("download cancelled ("+url+")"); |
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76 | f.delete(); |
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77 | } else {
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78 | 5230 | jaume | // register job in the cache
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79 | // TODO aix? deuria d'estar al principi per a poder capturar
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80 | // treballs que s'estan fent per? que encara no s'han acabat
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81 | 5245 | jaume | // synchronized (this) {
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82 | // RequestManager.getInstance().addDownloadedURLRequest(request);
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83 | // }
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84 | 5156 | jaume | } |
85 | 5230 | jaume | |
86 | running = false;
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87 | if (cancelled)
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88 | 5245 | jaume | request.setStatus(RetrieveEvent.REQUEST_CANCELLED); |
89 | 5230 | jaume | else
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90 | 5245 | jaume | request.setStatus(RetrieveEvent.REQUEST_FINISHED); |
91 | 5230 | jaume | |
92 | 5156 | jaume | } catch (MalformedURLException e) { |
93 | e.printStackTrace(); |
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94 | 5245 | jaume | request.setStatus(RetrieveEvent.REQUEST_FAILED); |
95 | 5156 | jaume | } catch (IOException e) { |
96 | e.printStackTrace(); |
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97 | 5245 | jaume | request.setStatus(RetrieveEvent.REQUEST_FAILED); |
98 | 5156 | jaume | } |
99 | } |
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100 | |||
101 | 5245 | jaume | // private void fireEvent() {
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102 | // Iterator it = listeners.iterator();
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103 | // while (it.hasNext()) {
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104 | // RetrieveListener listener = (RetrieveListener) it.next();
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105 | // listener.transferEventReceived(event);
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106 | // }
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107 | // }
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108 | 5230 | jaume | |
109 | 5156 | jaume | public void cancel() { |
110 | cancelled = true;
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111 | try {
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112 | if (is != null) { |
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113 | is.close(); |
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114 | is = null;
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115 | } |
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116 | } catch (IOException e) { |
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117 | e.printStackTrace(); |
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118 | } |
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119 | } |
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120 | |||
121 | public boolean isRunning() { |
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122 | return running && !cancelled;
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123 | } |
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124 | 5230 | jaume | |
125 | |||
126 | public URLRequest getRequest() {
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127 | return request;
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128 | } |
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129 | 5156 | jaume | } |
130 | |||
131 | |||
132 | //static private String makeSuffix(String contentType) {
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133 | // contentType = contentType.toLowerCase();
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134 | // if (contentType.indexOf("png") >= 0)
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135 | // return ".png";
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136 | //
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137 | // if (contentType.indexOf("xml") >= 0)
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138 | // return ".xml";
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139 | //
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140 | // if (contentType.indexOf("gif") >= 0)
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141 | // return ".gif";
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142 | //
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143 | // if (contentType.indexOf("tif") >= 0)
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144 | // return ".tif";
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145 | //
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146 | // if (contentType.indexOf("jpg") >= 0
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147 | // || contentType.indexOf("jpeg") >= 0)
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148 | // return ".jpg";
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149 | //
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150 | // if (contentType.indexOf("html") >= 0)
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151 | // return ".html";
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152 | //
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153 | // return "";
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154 | //}
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155 | ///**
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156 | // *
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157 | // */
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158 | //private void end() {
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159 | //}
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160 | //
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161 | ///**
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162 | // *
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163 | // */
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164 | //private void inThreadEnd() {
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165 | //}
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166 | //
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167 | ///**
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168 | // *
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169 | // */
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170 | //private void update() {
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171 | //}
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172 | //
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173 | ///**
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174 | // *
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175 | // */
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176 | //private void begin() {
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177 | //}
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178 | |||
179 | //public void start() {
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180 | //// this.reset();
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181 | //this.thread = new Thread(this);
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182 | //this.thread.start();
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183 | //}
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184 | |||
185 | /* (non-Javadoc)
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186 | * @see java.lang.Runnable#run()
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187 | * /
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188 | public void run() {
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189 | try {
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190 | URL url = request.getUrl();
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191 | this.status = Status.CONNECTING;
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192 | this.begin();
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193 | |||
194 | {
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195 | // Retrieve the contents.
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196 | int numBytesRead = 0;
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197 | // System.out.println("File being retrieved. " + this.getUrl().toString());
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198 | java.net.URLConnection connection = url.openConnection();
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199 | connection.setAllowUserInteraction(true);
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200 | java.io.InputStream incoming = connection.getInputStream();
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201 | this.contentLength = connection.getContentLength();
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202 | this.contentType = connection.getContentType();
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203 | |||
204 | java.io.File destFile = java.io.File.createTempFile("Cq_", makeSuffix(this.contentType));
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205 | destFile.deleteOnExit(); // It's copied later if it's to be persisted.
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206 | this.destination = destFile.getPath();
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207 | java.io.FileOutputStream outgoing = new java.io.FileOutputStream(destFile);
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208 | |||
209 | this.status = Status.RETRIEVING;
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210 | |||
211 | byte[] buffer = new byte[4096];
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212 | |||
213 | try {
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214 | while (!Thread.currentThread().isInterrupted() && numBytesRead >= 0) {
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215 | numBytesRead = incoming.read(buffer);
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216 | if (numBytesRead > 0) {
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217 | this.bytesRead += numBytesRead;
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218 | outgoing.write(buffer, 0, numBytesRead);
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219 | this.update();
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220 | }
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221 | }
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222 | } finally {
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223 | if (incoming != null)
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224 | try {incoming.close();} catch (java.io.IOException e) {}; // TODO: log it maybe
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225 | if (outgoing != null)
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226 | try {outgoing.close();} catch (java.io.IOException e) {}; // TODO: log it maybe
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227 | }
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228 | this.status = Status.POSTPROCESSING;
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229 | }
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230 | } catch (Exception e) {
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231 | this.status = Status.ERROR;
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232 | this.error = e;
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233 | e.printStackTrace();
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234 | } finally {
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235 | if (Thread.currentThread().isInterrupted())
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236 | this.status = Status.INTERRUPTED;
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237 | this.update();
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238 | this.inThreadEnd();
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239 | if (this.status == Status.POSTPROCESSING)
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240 | this.status = Status.DONE;
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241 | this.end();
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242 | }
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243 | }*/
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244 | |||
245 | //File tempDirectory = new File(tempDirectoryPath);
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246 | //if (!tempDirectory.exists())
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247 | //tempDirectory.mkdir();
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248 | //
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249 | //f = new File(tempDirectoryPath+"/"+name+System.currentTimeMillis());
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250 | //if (cancelled)
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251 | //throw new TaskCancelledException();
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252 | //addDownloadedURL(url, f.getAbsolutePath());
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253 | //try {
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254 | //URL url = request.getUrl();
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255 | //System.out.println(url);
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256 | //this.status = Status.CONNECTING;
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257 | //this.begin();
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258 | //
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259 | //{
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260 | //// Retrieve the contents.
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261 | //int numBytesRead = 0;
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262 | ////System.out.println("File being retrieved. " + this.getUrl().toString());
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263 | //java.net.URLConnection connection = url.openConnection();
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264 | //connection.setAllowUserInteraction(true);
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265 | //java.io.InputStream incoming = connection.getInputStream();
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266 | //this.contentLength = connection.getContentLength();
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267 | //this.contentType = connection.getContentType();
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268 | //
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269 | //java.io.File destFile = java.io.File.createTempFile("Cq_", makeSuffix(this.contentType));
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270 | //System.out.println(destFile.getAbsolutePath());
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271 | ////destFile.deleteOnExit(); // It's copied later if it's to be persisted.
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272 | //this.destination = destFile.getPath();
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273 | //java.io.FileOutputStream outgoing = new java.io.FileOutputStream(destFile);
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274 | //
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275 | //this.status = Status.RETRIEVING;
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276 | //
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277 | //byte[] buffer = new byte[4096];
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278 | //
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279 | //try {
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280 | //while (!Thread.currentThread().isInterrupted() && numBytesRead >= 0) {
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281 | //numBytesRead = incoming.read(buffer);
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282 | //if (numBytesRead > 0) {
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283 | //this.bytesRead += numBytesRead;
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284 | //outgoing.write(buffer, 0, numBytesRead);
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285 | //this.update();
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286 | //}
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287 | //}
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288 | //} finally {
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289 | //if (incoming != null)
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290 | //try {incoming.close();} catch (java.io.IOException e) {}; // TODO: log it maybe
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291 | //if (outgoing != null)
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292 | //try {outgoing.close();} catch (java.io.IOException e) {}; // TODO: log it maybe
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293 | //}
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294 | //this.status = Status.POSTPROCESSING;
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295 | //}
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296 | //} catch (Exception e) {
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297 | //this.status = Status.ERROR;
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298 | //this.error = e;
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299 | //e.printStackTrace();
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300 | //} finally {
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301 | //if (Thread.currentThread().isInterrupted())
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302 | //this.status = Status.INTERRUPTED;
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303 | //this.update();
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304 | //this.inThreadEnd();
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305 | //if (this.status == Status.POSTPROCESSING)
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306 | //this.status = Status.DONE;
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307 | //this.end();
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308 | //}
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