1 | package fr.alcatel.ether.app.common; |
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2 | |
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3 | // JDK - rmi |
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4 | import java.rmi.*; |
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5 | import java.rmi.server.*; |
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6 | // JDK - io |
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7 | import java.io.File; |
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8 | import java.io.FileInputStream; |
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9 | import java.io.FileOutputStream; |
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10 | import java.io.BufferedOutputStream; |
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11 | import java.io.IOException; |
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12 | import java.io.FileNotFoundException; |
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13 | import java.net.MalformedURLException; |
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14 | // JDK - collections |
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15 | import java.util.ArrayList; |
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16 | import java.util.Map; |
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17 | import java.util.Collections; |
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18 | import java.util.HashMap; |
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19 | // Utilities |
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20 | import flafi.util.FileCopy2; |
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21 | import fr.alcatel.ether.app.common.Config; |
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22 | //import fr.alcatel.ether.app.order.Order; |
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23 | import fr.alcatel.ether.tools.Trace; |
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24 | |
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25 | public class AtaRemoteFileServer extends UnicastRemoteObject implements RemoteFileManager { |
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26 | // Debugging |
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27 | private static final boolean DEBUG = true; |
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28 | |
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29 | /** delegate to runnable queeuing server */ |
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30 | private QueuedFileServer server = null; |
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31 | |
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32 | /** Default buffer size used for copying */ |
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33 | public static final int DEFAULT_BUFFER_SIZE = 8192; |
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34 | /** Default buffer size used for copying */ |
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35 | public static final int MIN_BUFFER_SIZE = 128; |
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36 | |
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37 | /** Current buffer size used for copying */ |
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38 | private int bufferSize = DEFAULT_BUFFER_SIZE; |
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39 | /** Buffer used for copying */ |
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40 | private byte[] buffer; |
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41 | |
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42 | transient RmiFileInputStream input = null; |
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43 | private transient final Map inputs = Collections.synchronizedMap( new HashMap() ); |
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44 | private transient final Map inputBuffers = Collections.synchronizedMap( new HashMap() ); |
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45 | |
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46 | /** |
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47 | * Construire un RemoteFileServer résidant sur un hôte. |
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48 | * |
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49 | */ |
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50 | public AtaRemoteFileServer( ) throws RemoteException { |
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51 | super(); |
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52 | Config.getConfig( ); |
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53 | Trace.getTrace( IF_REMOTE_FILE_MANAGER ); |
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54 | server = new QueuedFileServer( this ); |
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55 | Trace.debug(this,"AtaRemoteFileServer constructed"); |
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56 | } |
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57 | |
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58 | /** |
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59 | * Modifier la taille du buffer utilisé pour lire et écrire des fichiers. |
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60 | * Valeurs négatives sont ignorées. |
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61 | * |
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62 | * @param bufferSize: la taille du buffer en octets |
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63 | */ |
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64 | public void setBufferSize( int bufferSize ) throws RemoteException { |
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65 | if ( bufferSize >= MIN_BUFFER_SIZE ) { |
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66 | this.bufferSize = bufferSize; |
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67 | } |
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68 | } |
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69 | |
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70 | /** |
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71 | * Ouvrir un fichier distant pour lecture ou écriture. |
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72 | * |
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73 | * @param f: le fichier distant |
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74 | */ |
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75 | public void open( RemoteFile f ) throws RemoteException, IOException, FileNotFoundException { |
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76 | /* |
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77 | if ( DEBUG ) { Trace.debug( this, "Illegal call to AtaRemoteFileServer.open()" ); } |
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78 | if ( DEBUG ) { System.out.println( "Illegal call to AtaRemoteFileServer.open()" ); } |
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79 | */ |
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80 | |
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81 | File file = f.getFile( ); |
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82 | if ( DEBUG) Trace.debug( this, "Opening remote file " + file ); |
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83 | RmiFileInputStream input = (RmiFileInputStream)inputs.get( file ); |
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84 | if ( input != null ) { |
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85 | throw new IOException( file + " is already open" ); |
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86 | } |
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87 | FileInputStream in = new FileInputStream( file ); |
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88 | input = new RmiFileInputStream( in ); |
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89 | inputs.put( file, input ); |
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90 | inputBuffers.put( input, new byte[bufferSize] ); |
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91 | |
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92 | } |
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93 | |
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94 | /** |
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95 | * Fermer un fichier distant après lecture ou écriture. |
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96 | * |
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97 | * @param f: le fichier distant |
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98 | */ |
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99 | public void close( RemoteFile f ) throws RemoteException, IOException { |
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100 | /* |
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101 | if ( DEBUG ) { Trace.debug( this, "Illegal call to AtaRemoteFileServer.close()" ); } |
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102 | if ( DEBUG ) { System.out.println( "Illegal call to AtaRemoteFileServer.close()" ); } |
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103 | */ |
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104 | |
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105 | RmiFileInputStream input = (RmiFileInputStream)inputs.remove( f.getFile() ); |
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106 | if ( input != null ) { |
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107 | if ( DEBUG) Trace.debug( this, "Closing remote file " + f.getFile() ); |
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108 | inputBuffers.remove( input ); |
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109 | input.close( ); |
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110 | } |
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111 | else { |
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112 | throw new IOException( "No input stream to close" ); |
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113 | } |
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114 | |
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115 | } |
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116 | |
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117 | /** |
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118 | * Lire un fichier distant. |
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119 | * |
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120 | * @param f: le fichier distant |
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121 | */ |
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122 | public byte[] read( RemoteFile f ) throws RemoteException, IOException { |
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123 | /* |
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124 | if ( DEBUG ) { Trace.debug( this, "Illegal call to AtaRemoteFileServer.read()" ); } |
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125 | if ( DEBUG ) { System.out.println( "Illegal call to AtaRemoteFileServer.read()" ); } |
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126 | return null; |
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127 | */ |
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128 | if ( DEBUG ) { Trace.debug( this, "BEGINNING READ OF FILE:" + f);} |
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129 | File file = f.getFile( ); |
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130 | RmiFileInputStream input = (RmiFileInputStream)inputs.get( file ); |
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131 | if ( input != null ) { |
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132 | byte[] buffer = (byte[])inputBuffers.get( input ); |
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133 | int len = input.read( buffer ); |
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134 | if ( len > 0 ) { |
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135 | byte[] buf = new byte[len]; |
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136 | for ( int i = 0; i < len; i++ ) { |
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137 | buf[i] = buffer[i]; |
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138 | } |
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139 | if ( DEBUG ) { Trace.debug( this, "ENDING READ OF FILE:" + f); } |
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140 | return buf; |
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141 | } |
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142 | else { |
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143 | throw new IOException( "EOF reached" ); |
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144 | } |
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145 | } |
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146 | else { |
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147 | if ( DEBUG ) { Trace.debug( this, "No input stream for " + file ); } |
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148 | return new byte[0]; |
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149 | } |
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150 | } |
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151 | |
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152 | /** |
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153 | * <p>Copier un fichier distant.</p> |
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154 | * |
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155 | * @param src: le fichier source |
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156 | * @param dest: le fichier destination |
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157 | */ |
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158 | public boolean copy( RemoteFile src, RemoteFile dest ) throws RemoteException { |
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159 | final String ERROR = "Had a problem copying '" + src + "' to '" + dest + "' !"; |
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160 | boolean success = false; |
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161 | try { |
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162 | RemoteFileManager manager = dest.getFileManager( ); |
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163 | if ( manager.equals(this) ) { |
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164 | ArrayList args = new ArrayList( ); |
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165 | args.add( src ); |
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166 | args.add( dest ); |
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167 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.COPY, args ); |
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168 | server.postEventWithResult( evt ); |
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169 | Boolean result = (Boolean)evt.getResult( ); |
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170 | success = result.booleanValue( ); |
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171 | } |
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172 | else { |
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173 | success = manager.copy( src, dest ); |
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174 | } |
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175 | } |
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176 | catch ( RemoteException remoteException ) { |
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177 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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178 | } |
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179 | catch ( Exception exception ) { |
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180 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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181 | } |
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182 | return success; |
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183 | } |
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184 | |
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185 | /** |
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186 | * <p>Supprimer un fichier distant.</p> |
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187 | * |
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188 | * @param file: le fichier à supprimer |
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189 | */ |
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190 | public boolean delete( RemoteFile file ) throws RemoteException { |
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191 | final String ERROR = "Had a problem deleting '" + file + "' !"; |
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192 | boolean success = false; |
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193 | try { |
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194 | RemoteFileManager manager = file.getFileManager( ); |
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195 | if ( manager.equals(this) ) { |
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196 | if ( exists(file) ) |
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197 | { |
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198 | ArrayList args = new ArrayList( ); |
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199 | args.add( file ); |
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200 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.DELETE, args ); |
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201 | server.postEventWithResult( evt ); |
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202 | Boolean result = (Boolean)evt.getResult( ); |
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203 | success = result.booleanValue( ); |
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204 | } |
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205 | else |
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206 | { |
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207 | return true; |
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208 | } |
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209 | } |
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210 | else { |
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211 | // ------------------------------------------- |
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212 | // Ask the destination manager to retrieve the |
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213 | // source file for us. |
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214 | // ------------------------------------------- |
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215 | success = manager.delete( file ); |
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216 | } |
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217 | } |
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218 | catch ( RemoteException remoteException ) { |
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219 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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220 | } |
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221 | catch ( IOException ioProblem ) { |
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222 | if ( DEBUG ) { Trace.debug( this, ERROR, ioProblem ); } |
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223 | } |
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224 | catch ( Exception exception ) { |
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225 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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226 | } |
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227 | return success; |
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228 | } |
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229 | |
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230 | /** |
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231 | * Lister les fichiers distant d'un hôte. |
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232 | * On considère que le répertoire de base des fichiers est le répertoire passé en argument. |
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233 | * |
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234 | * @param directory: le répertoire distant |
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235 | */ |
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236 | public ArrayList list( RemoteFile directory ) throws RemoteException { |
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237 | ArrayList remoteFiles = null; |
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238 | String ERROR = "Had a problem listing '" + directory + "' !"; |
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239 | try { |
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240 | RemoteFileManager manager = directory.getFileManager( ); |
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241 | // ------------------------------------------- |
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242 | // List the files in the directory |
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243 | // ------------------------------------------- |
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244 | if ( manager.equals(this) ) { |
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245 | ArrayList args = new ArrayList( ); |
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246 | args.add( directory ); |
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247 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.LIST, args ); |
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248 | server.postEventWithResult( evt ); |
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249 | remoteFiles = (ArrayList)evt.getResult( ); |
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250 | } |
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251 | // ------------------------------------------- |
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252 | // Ask the destination manager to list the |
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253 | // directory for us. |
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254 | // ------------------------------------------- |
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255 | else { |
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256 | remoteFiles = manager.list( directory ); |
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257 | } |
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258 | } |
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259 | catch ( RemoteException remoteException ) { |
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260 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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261 | } |
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262 | catch ( Exception exception ) { |
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263 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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264 | } |
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265 | return remoteFiles; |
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266 | } |
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267 | |
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268 | /** |
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269 | * <p>Transférer un fichier distant.</p> |
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270 | * |
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271 | * @param src: le fichier source |
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272 | * @param dest: le fichier destination |
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273 | */ |
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274 | public boolean move( RemoteFile src, RemoteFile dest ) throws RemoteException { |
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275 | String ERROR = "Had a problem moving '" + src + "' to '" + dest + "' !"; |
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276 | boolean success = false; |
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277 | // ------------------------------------------- |
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278 | // Debugging |
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279 | // ------------------------------------------- |
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280 | if ( DEBUG ) { Trace.debug( this, IF_REMOTE_FILE_MANAGER + " moving files." ); } |
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281 | |
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282 | try { |
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283 | // ------------------------------------------- |
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284 | // Move the file src to dest |
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285 | // ------------------------------------------- |
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286 | RemoteFileManager manager = dest.getFileManager( ); |
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287 | if ( manager.equals(this) ) { |
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288 | ArrayList args = new ArrayList( ); |
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289 | args.add( src ); |
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290 | args.add( dest ); |
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291 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.MOVE, args ); |
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292 | server.postEventWithResult( evt ); |
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293 | Boolean result = (Boolean)evt.getResult( ); |
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294 | success = result.booleanValue( ); |
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295 | } |
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296 | // ------------------------------------------- |
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297 | // Ask the destination manager to move |
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298 | // the file for us. |
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299 | // ------------------------------------------- |
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300 | else { |
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301 | success = manager.move( src, dest ); |
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302 | } |
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303 | } |
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304 | catch ( RemoteException remoteException ) { |
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305 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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306 | } |
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307 | catch ( Exception exception ) { |
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308 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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309 | } |
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310 | return success; |
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311 | } |
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312 | |
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313 | |
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314 | /** |
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315 | * Récupérer un fichier distant sur cette hôte. |
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316 | * |
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317 | * @param remoteFile: le fichier source à rapatrier |
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318 | * |
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319 | * @return un File indiquant le fichier temporaire; l'appelant doit le détruire lorsqu'il a terminé |
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320 | */ |
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321 | public File retrieve( RemoteFile file ) throws RemoteException { |
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322 | final String ERROR = "Had a problem retrieving '" + file + "' !"; |
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323 | File retrieved = null; |
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324 | try { |
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325 | // ------------------------------------------- |
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326 | // Move the file src to dest |
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327 | // ------------------------------------------- |
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328 | RemoteFileManager manager = file.getFileManager( ); |
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329 | ArrayList args = new ArrayList( ); |
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330 | args.add( file ); |
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331 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.RETRIEVE, args ); |
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332 | server.postEventWithResult( evt ); |
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333 | retrieved = (File)evt.getResult( ); |
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334 | } |
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335 | catch ( RemoteException remoteException ) { |
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336 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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337 | } |
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338 | catch ( Exception exception ) { |
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339 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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340 | } |
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341 | return retrieved; |
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342 | } |
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343 | |
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344 | /** |
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345 | * <p>Retrieves the local file corresponding a remote file on local</p> |
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346 | * <p>Return value is null if file is not available with this remote file manager.</p> |
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347 | * |
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348 | * @param remoteFile: le fichier source à rapatrier |
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349 | * |
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350 | * @return un File indiquant le fichier en local |
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351 | */ |
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352 | public File getLocalFile( RemoteFile localFile ) throws RemoteException, IOException { |
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353 | try { |
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354 | RemoteFileManager distant = localFile.getFileManager( ); |
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355 | if ( distant.equals(this) ) { |
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356 | return localFile.getFile( ); |
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357 | } |
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358 | } |
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359 | catch ( NotBoundException notBound ) { |
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360 | if ( DEBUG ) { Trace.debug( this, "RemoteFileManager not bound to " + localFile, notBound ); } |
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361 | } |
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362 | catch ( MalformedURLException badURL ) { |
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363 | if ( DEBUG ) { Trace.debug( this, "Unable to locate RemoteFileManager for " + localFile, badURL ); } |
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364 | } |
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365 | return null; |
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366 | } |
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367 | |
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368 | /** |
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369 | * <p>Create a remote file representing a directory. |
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370 | * If the remote file is handled by this server, we delegat to the local |
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371 | * file manager. If not we forward the request to the <code>RemoteFile</code>'s server. |
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372 | * </p> |
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373 | * @param directory: the remote directory to create |
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374 | * |
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375 | * @return true if the directory creation succeeded, false otherwise |
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376 | */ |
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377 | public boolean makeDir( RemoteFile directory ) throws RemoteException { |
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378 | boolean success = false; |
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379 | if ( DEBUG ) { Trace.debug( this, "Creating directory '" + directory + "'" ); } |
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380 | try { |
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381 | RemoteFileManager remoteManager = directory.getFileManager( ); |
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382 | if ( remoteManager.equals(this) ) { |
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383 | FileManager localFileManager = (FileManager)FileManager.instance( FileManager.class.toString() ); |
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384 | // ATTENTIOn CORECTIOn A TESTERT ET RETESTER |
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385 | // return localFileManager.mkdir( directory.getPath() ); |
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386 | // |
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387 | return localFileManager.mkdir( directory.getAbsolutePath() ); |
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388 | // success = true; |
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389 | } |
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390 | else { |
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391 | success = remoteManager.makeDir( directory ); |
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392 | } |
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393 | } |
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394 | catch ( Exception exception ) { |
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395 | if ( DEBUG ) { Trace.debug( this, "Had a problem creating '" + directory + "' !", exception ); } |
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396 | } |
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397 | return success; |
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398 | } |
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399 | |
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400 | /** |
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401 | * <p>Delete a remote file representing a directory. |
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402 | * If the remote file is handled by this server, we delegate to the local |
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403 | * file manager. If not we forward the request to the <code>RemoteFile</code>'s server. |
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404 | * </p> |
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405 | * @param directory: the remote directory to remove files from |
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406 | */ |
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407 | public boolean deleteDir( RemoteFile directory ) throws RemoteException { |
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408 | if ( DEBUG ) { Trace.debug( this, "Deleting directory " + directory ); } |
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409 | try { |
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410 | RemoteFileManager remoteManager = directory.getFileManager( ); |
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411 | if ( remoteManager.equals(this) ) { |
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412 | FileManager localFileManager = (FileManager)FileManager.instance( FileManager.class.toString() ); |
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413 | localFileManager.deleteAllDir( directory.getPath() ); |
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414 | return true; |
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415 | } |
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416 | else { |
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417 | return remoteManager.deleteDir( directory ); |
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418 | } |
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419 | } |
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420 | catch ( Exception exception ) { |
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421 | if ( DEBUG ) { Trace.debug( this, "Had a problem deleting '" + directory + "' !", exception ); } |
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422 | } |
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423 | return false; |
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424 | } |
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425 | |
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426 | /** |
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427 | * <p>Determine the size, in bytes, of the file or of all the files in a directory.</p> |
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428 | * |
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429 | * @param directory: the file or directory |
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430 | * |
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431 | * @return the size of the file or directory; the size of a directory is the sum of all files within it and its sub-directories |
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432 | */ |
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433 | public long size( RemoteFile directory ) throws RemoteException { |
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434 | long length = 0; |
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435 | final String ERROR = "Had a problem obtaining size of " + directory; |
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436 | try { |
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437 | // ------------------------------------------- |
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438 | // We retrieve the size of the directory of file. |
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439 | // ------------------------------------------- |
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440 | RemoteFileManager remoteManager = directory.getFileManager( ); |
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441 | if ( remoteManager.equals(this) ) { |
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442 | // ArrayList args = new ArrayList( ); |
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443 | // args.add( directory ); |
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444 | // RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.SIZE, args ); |
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445 | // server.postEventWithResult( evt ); |
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446 | // Long size = (Long)evt.getResult( ); |
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447 | // length = size.longValue( ); |
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448 | // calcul réel par appel au local fileManager |
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449 | File toList = directory.getFileManager().getLocalFile( directory ); |
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450 | FileManager localFileManager = (FileManager)FileManager.instance( FileManager.class.toString() ); |
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451 | return localFileManager.size( toList ); |
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452 | } |
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453 | // ------------------------------------------- |
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454 | // Ask the other remote manager to retrieve |
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455 | // the source file for us. |
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456 | // ------------------------------------------- |
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457 | else { |
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458 | length = remoteManager.size( directory ); |
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459 | } |
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460 | } |
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461 | catch ( RemoteException remoteException ) { |
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462 | if ( DEBUG ) { Trace.debug( this, ERROR, remoteException ); } |
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463 | } |
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464 | catch ( IOException ioProblem ) { |
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465 | if ( DEBUG ) { Trace.debug( this, ERROR, ioProblem ); } |
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466 | } |
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467 | catch ( Exception exception ) { |
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468 | if ( DEBUG ) { Trace.debug( this, ERROR, exception ); } |
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469 | } |
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470 | if ( DEBUG ) { Trace.debug( this, "Size of files in remote directory: " + length + " bytes" ); } |
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471 | return length; |
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472 | } |
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473 | |
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474 | /** |
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475 | * <p>Determine if a remote file exists.</p> |
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476 | * |
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477 | * @param file: remote file to verify |
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478 | * |
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479 | * @return true if the file exists, false otherwise |
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480 | */ |
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481 | public boolean exists( RemoteFile file ) throws RemoteException { |
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482 | boolean exists = false; |
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483 | try { |
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484 | RemoteFileManager manager = file.getFileManager( ); |
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485 | if ( manager.equals(this) ) { |
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486 | ArrayList args = new ArrayList( ); |
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487 | args.add( file ); |
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488 | RemoteFileServerEvent evt = new RemoteFileServerEvent( RemoteFileServerEvent.EXISTS, args ); |
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489 | server.postEventWithResult( evt ); |
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490 | Boolean result = (Boolean)evt.getResult( ); |
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491 | exists = result.booleanValue( ); |
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492 | } |
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493 | else { |
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494 | exists = manager.exists( file ); |
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495 | } |
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496 | } |
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497 | catch ( NotBoundException notRunning ) { |
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498 | if ( DEBUG ) { Trace.debug( this, "Remote Server not bound", notRunning ); } |
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499 | } |
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500 | catch ( MalformedURLException badURL ) { |
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501 | if ( DEBUG ) { Trace.debug( this, "Invalid file name " + file, badURL ); } |
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502 | } |
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503 | catch ( IOException ioProblem ) { |
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504 | if ( DEBUG ) { Trace.debug( this, "Invalid file name " + file, ioProblem ); } |
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505 | } |
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506 | catch ( Exception e ) { |
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507 | if ( DEBUG ) { Trace.debug( this, "Error checking existence of file " + file, e ); } |
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508 | } |
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509 | finally { |
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510 | return exists; |
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511 | } |
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512 | } |
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513 | |
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514 | |
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515 | /** |
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516 | * <p>Nettoyer les espaces temporaire utilisés sur cette machine.</p> |
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517 | * |
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518 | * @param int : l'identifiant de la commande |
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519 | */ |
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520 | public void cleanTmpDir(int orderId) throws RemoteException { |
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521 | FileManager localFileManager = (FileManager)FileManager.instance( FileManager.class.toString() ); |
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522 | try { |
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523 | if ( DEBUG ) { Trace.debug( this, " TRYING TO CLEAN ARCHIVE DIR :" + localFileManager.getArchiveOrderDir(orderId)) ;} |
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524 | localFileManager.deleteAllDir(localFileManager.getArchiveOrderDir(orderId)); |
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525 | } |
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526 | catch ( Exception e ) { |
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527 | if ( DEBUG ) { Trace.debug( this, "Error ", e ); } |
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528 | } |
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529 | // Order tempOrder = new Order(orderId); |
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530 | // try { |
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531 | // if ( DEBUG ) { Trace.debug( this, " TRYING TO CLEAN SERVICE DIR :" + localFileManager.getServiceOrderDir(tempOrder)) ;} |
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532 | // localFileManager.deleteAllDir(localFileManager.getServiceOrderDir(tempOrder)); |
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533 | // } |
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534 | // catch ( Exception e ) { |
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535 | // if ( DEBUG ) { Trace.debug( this, "Error ", e ); } |
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536 | // } |
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537 | // try { |
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538 | // if ( DEBUG ) { Trace.debug( this, " TRYING TO CLEAN TEMP DIR :" + localFileManager.getTempOrderDir(tempOrder)) ;} |
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539 | // localFileManager.deleteAllDir(localFileManager.getTempOrderDir(tempOrder)); |
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540 | // } |
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541 | // catch ( Exception e ) { |
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542 | // if ( DEBUG ) { Trace.debug( this, "Error ", e ); } |
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543 | // } |
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544 | } |
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545 | |
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546 | /** |
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547 | * <p>Execute the RMI Remote File Server.</p> |
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548 | * |
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549 | * @param args: command-line arguments; requires host name as first and only arg. |
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550 | * |
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551 | */ |
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552 | public static void main(String[] args) { |
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553 | /* |
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554 | if ( System.getSecurityManager() == null ) { |
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555 | System.setSecurityManager( new RMISecurityManager() ); |
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556 | } |
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557 | */ |
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558 | String name = "//" + args[0] + "/" + IF_REMOTE_FILE_MANAGER; |
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559 | try { |
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560 | Naming.rebind( name, new AtaRemoteFileServer() ); |
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561 | System.out.println( IF_REMOTE_FILE_MANAGER + " bound" ); |
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562 | } catch ( Exception e ) { |
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563 | System.err.println( IF_REMOTE_FILE_MANAGER + " exception: " + e.getMessage() ); |
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564 | e.printStackTrace( ); |
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565 | } |
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566 | } |
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567 | } |
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568 | |
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