src/and/Mapping/Utils.java

   1 package and.Mapping ;
   2
   3 import java.io.FileInputStream;
   4 import java.io.FileNotFoundException;
   5 import java.io.FileOutputStream;
   6 import java.io.OutputStreamWriter;
   7 import java.io.PrintWriter;
   8 import java.net.InetAddress;
   9 import java.util.ArrayList;
  10
  11 import com.thoughtworks.xstream.XStream;
  12 import com.thoughtworks.xstream.io.xml.DomDriver;
  13
  14
  15
  16 /**
  17  * Class providing some tools to the library
  18  * @author S&eacute;astien Miqu&eacute;e
  19  */
  20 public class Utils
  21 {
  22         /**
  23          * Creation of the representation of the node in the Mapping point of view. It needs
  24          * some information about the computing node, which will be exploited by mapping
  25          * algorithms.
  26          * @return A node from the Mapping library
  27          */
  28         public static GNode createGNode()
  29         {
  30                 /** Using the Linpack class **/
  31                 Linpack linpack = new Linpack() ;
  32
  33                 /**  **/
  34                 GNode n = new GNode() ;
  35                 int nbCore = 0 ;
  36                 int frequency = 0 ;
  37                 int mflops = 0 ;
  38                 int memory = 0 ;
  39                 String name = "" ;
  40
  41
  42                 /** CPU information **/
  43
  44                 /* Amount of available computing cores */
  45                 nbCore = Runtime.getRuntime().availableProcessors() ;
  46
  47                 /* Average MegaFlops of each core */
  48                 double tmp_mflops = 0 ;
  49                 int loop = 10 ;
  50
  51                 for( int i = 0 ; i < loop ; i++ )
  52                 {
  53                         tmp_mflops += linpack.getMFlops() ;
  54                         System.gc() ;
  55                 }
  56                 mflops = (int) tmp_mflops / loop ;
  57
  58
  59                 /** Memory information **/
  60                 memory = (int) Runtime.getRuntime().maxMemory() / 1024 / 1024 ;
  61
  62
  63                 /* Host name */
  64                 try {
  65                         InetAddress addr = InetAddress.getLocalHost() ;
  66                         name = new String( addr.getCanonicalHostName() ) ;
  67                 } catch( final Exception e ) {
  68                         System.err.println( "Unalbe to retrieve host's name !" ) ;
  69                         e.printStackTrace();
  70                         System.exit( 1 ) ;
  71                 }
  72
  73                 /* Host IP */
  74                 String ip = null ;
  75                 try {
  76                         InetAddress addr = InetAddress.getLocalHost() ;
  77                         ip = addr.getHostAddress() ;
  78                 } catch( final Exception e ) {
  79                         System.err.println( "Unalbe to retrieve host's name !" ) ;
  80                         e.printStackTrace();
  81                         System.exit( 1 ) ;
  82                 }
  83
  84                 String names[] = decodeG5Knames( name ) ;
  85
  86                 /* Updating node information */
  87                 n.setFrequency( frequency ) ;
  88                 n.setMFlops( mflops ) ;
  89                 n.setMemory( memory ) ;
  90                 n.setNb_cores( nbCore ) ;
  91                 n.setName( name ) ;
  92                 n.setCluster( names[1] ) ;
  93                 n.setSite( names[2] ) ;
  94                 n.setIP( ip ) ;
  95                 n.setMapped( false ) ;
  96
  97                 return n ;
  98         }
  99
 100         /**
 101          * Creation of the representation of the grid, according to clusters into sites.
 102          * This representation may only fit on Grid'5000 like architectures (with computing
 103          * nodes name based on the following pattern |cluster_name|id_of_node_into_cluster|.|site_of_cluster|.|organisation|.*|).
 104          * @param _an the list of computing nodes connected
 105          * @return the grid's architecture
 106          */
 107         public static Grid createGridG5k( ArrayList<GNode> _an )
 108         {
 109                 Grid gr = new Grid() ;
 110
 111                 if( _an != null )
 112                 {
 113                         String cluster = "", site = "" ;
 114
 115                         ArrayList<Cluster> clusters = new ArrayList<Cluster>() ;
 116
 117                         for( int i = 0 ; i < _an.size() ; i++ )
 118                         {
 119                                 /* Variables edition */
 120
 121                                 String names[] = decodeG5Knames( _an.get( i ).getName() ) ;
 122
 123                                 cluster = names[ 1 ] ;
 124                                 site = names[ 2 ] ;
 125
 126                                 /* Insertion of the node in its cluster */
 127                                 boolean trouve = false ;
 128
 129                                 for( int j = 0 ; j < clusters.size() ; j++ )
 130                                 {
 131                                         if( clusters.get( j ).getName().equals( cluster ) && clusters.get( j ).getSite().equals( site ))
 132                                         {
 133                                                 _an.get( i ).setInCluster( true ) ;
 134                                                 _an.get( i ).setMapped( false ) ;
 135                                                 _an.get( i ).setSite( clusters.get( j ).getSite() ) ;
 136                                                 _an.get( i ).setCluster( clusters.get( j ).getName() ) ;
 137                                                 clusters.get( j ).addGNode( _an.get( i ) ) ;
 138                                                 trouve  = true ;
 139
 140                                                 break ;
 141                                         }
 142                                 }
 143
 144                                 if( ! trouve )
 145                                 {
 146                                         Cluster cl = new Cluster() ;
 147
 148                                         cl.setName( cluster ) ;
 149                                         cl.setSite( site ) ;
 150
 151                                         _an.get( i ).setInCluster( true ) ;
 152                                         _an.get( i ).setMapped( false ) ;
 153                                         _an.get( i ).setSite( site ) ;
 154                                         _an.get( i ).setCluster( cluster ) ;
 155
 156                                         cl.addGNode( _an.get( i ) ) ;
 157
 158                                         clusters.add( cl ) ;
 159                                 }
 160                         }
 161
 162                         gr.addClusters( clusters ) ;
 163
 164                 }
 165
 166                 return gr ;
 167         }
 168
 169
 170         /**
 171          * Return the three parts of the name of a node on Grid'5000.
 172          * @param _name The full name of the G5K node
 173          * @return The three parts of the name
 174          */
 175         protected static String[] decodeG5Knames( String _name )
 176         {
 177                 String temp = "" ;
 178                 String tab[] = new String[ 5 ] ;
 179                 String ret[] = new String[ 3 ] ;
 180
 181                 temp = _name.replace('.', '!' ) ;
 182
 183                 tab = temp.split( "!" ) ;
 184
 185                 ret[0] = tab[ 0 ] ;
 186                 ret[2] = tab[ 1 ] ;
 187
 188                 tab = ret[0].split( "-" ) ;
 189
 190                 ret[ 1 ] = tab[ 0 ] ;
 191
 192                 return ret ;
 193         }
 194
 195
 196         /**
 197          * Write the Grid object in an XML file.
 198          * @param _gl Grid graph to be write
 199          * @param _path File's path
 200          * @param _file File's name
 201          */
 202         public static void writeGrid( Grid _gl, String _path, String _file )
 203         {
 204                 if( _file.equals( "" ) )
 205                 {
 206                         System.err.println( "No file's name !\n" ) ;
 207                         return ;
 208                 }
 209
 210                 if ( ! _file.endsWith( ".xml" ) )
 211                 {
 212                         _file = _file + ".xml"; // Adding xml extension to file
 213                 }
 214
 215                 if( ! _file.equals( "" ) )
 216                 {
 217                         String path = "" ;
 218
 219                         if( _path.length() != 0 )
 220                         {
 221                                 path = _path+"/"+_file ;
 222                         } else {
 223                                 path = new String( "./" + _file ) ;
 224                         }
 225
 226                         XStream xstream = new XStream( new DomDriver() ) ;
 227
 228                         String xml = xstream.toXML( _gl ) ;
 229
 230                         PrintWriter ecrivain = null ;
 231
 232                         try {
 233                                 ecrivain = new PrintWriter( new OutputStreamWriter( new FileOutputStream( path ), "UTF8" ) ) ;
 234
 235                                 ecrivain.println( "<?xml version=\"1.0\" encoding=\"UTF8\"?>" ) ;
 236                                 ecrivain.println( xml ) ;
 237
 238                                 ecrivain.close() ;
 239                         } catch( Exception e ) {
 240                                 System.err.println( "\nError during the write opération !\n" ) ;
 241                                 e.printStackTrace() ;
 242                         }
 243                 }
 244         }
 245
 246         /**
 247          * Write an application Graph in a file.
 248          * @param _gr Application Graph to be write
 249          * @param _path File's path
 250          * @param _file File's name
 251          */
 252         public static void writeGraph( Graph _gr, String _path, String _file )
 253         {
 254                 if( _file.equals( "" ) )
 255                 {
 256                         System.err.println( "No file's name !\n" ) ;
 257                         return ;
 258                 }
 259
 260                 if ( ! _file.endsWith( ".xml" ) )
 261                 {
 262                         _file = _file + ".xml"; // Adding xml extension to file
 263                 }
 264
 265                 if( ! _file.equals( "" ) )
 266                 {
 267                         String path = "" ;
 268
 269                         if( _path.length() != 0 )
 270                         {
 271                                 path = _path+"/"+_file ;
 272                         } else {
 273                                 path = new String( "./" + _file ) ;
 274                         }
 275
 276                         XStream xstream = new XStream( new DomDriver() ) ;
 277
 278                         String xml = xstream.toXML( _gr ) ;
 279
 280                         PrintWriter ecrivain = null ;
 281
 282                         try {
 283                                 ecrivain = new PrintWriter( new OutputStreamWriter( new FileOutputStream( path ), "UTF8" ) ) ;
 284
 285                                 ecrivain.println( "<?xml version=\"1.0\" encoding=\"UTF8\"?>" ) ;
 286                                 ecrivain.println( xml ) ;
 287
 288                                 ecrivain.close() ;
 289                         } catch( Exception e ) {
 290                                 System.err.println( "\nError during the write opération !\n" ) ;
 291                                 e.printStackTrace() ;
 292                         }
 293                 }
 294         }
 295
 296
 297         /**
 298          * Write a mapping done in a file.
 299          * @param _mp The mapping done to be write
 300          * @param _path File's path
 301          * @param _file File's name
 302          */
 303         public static void writeMapping( Mapping _mp, String _path, String _file )
 304         {
 305                 if( _file.equals( "" ) )
 306                 {
 307                         System.err.println( "No file's name !\n" ) ;
 308                         return ;
 309                 }
 310
 311                 if ( ! _file.endsWith( ".xml" ) )
 312                 {
 313                         _file = _file + ".xml"; // Adding xml extension to file
 314                 }
 315
 316                 if( ! _file.equals( "" ) )
 317                 {
 318                         String path = "" ;
 319
 320                         if( _path.length() != 0 )
 321                         {
 322                                 path = _path+"/"+_file ;
 323                         } else {
 324                                 path = new String( "./" + _file ) ;
 325                         }
 326
 327                         XStream xstream = new XStream( new DomDriver() ) ;
 328
 329                         String xml = xstream.toXML( _mp ) ;
 330
 331                         PrintWriter ecrivain = null ;
 332
 333                         try {
 334                                 ecrivain = new PrintWriter( new OutputStreamWriter( new FileOutputStream( path ), "UTF8" ) ) ;
 335
 336                                 ecrivain.println( "<?xml version=\"1.0\" encoding=\"UTF8\"?>" ) ;
 337                                 ecrivain.println( xml ) ;
 338
 339                                 ecrivain.close() ;
 340                         } catch( Exception e ) {
 341                                 System.err.println( "\nError during the write opération !\n" ) ;
 342                                 e.printStackTrace() ;
 343                         }
 344                 }
 345         }
 346
 347
 348         /**
 349          * Read an application Graph from a file.
 350          * @param _file File's name
 351          * @param _path File's path
 352          * @return The application Graph read
 353          */
 354         public static Graph readGraph( String _path, String _file )
 355         {
 356                 if ( _file.equals( "" ) )
 357                 {
 358                         System.err.println( "No file's name !\n" ) ;
 359                         return null ;
 360                 }
 361
 362                 if ( ! _file.endsWith( ".xml" ) )
 363                 {
 364                         _file = _file + ".xml"; // Adding xml extension to file
 365                 }
 366
 367                 String path = "" ;
 368
 369                 if( _path.length() != 0 )
 370                 {
 371                         path = _path+"/"+_file ;
 372                 } else {
 373                         path = new String( "./" + _file ) ;
 374                 }
 375
 376                 Graph gr = null ;
 377
 378                 XStream xstream = new XStream( new DomDriver() ) ;
 379
 380                 try {
 381                         gr = (Graph) xstream.fromXML( new FileInputStream( path ) ) ;
 382                 } catch( FileNotFoundException e ) {
 383                         System.err.println( "File not found !\n" ) ;
 384                         e.printStackTrace();
 385                         return null ;
 386                 } catch( ClassCastException e ) {
 387                         System.err.println( "The file does not contain a valid Graph" ) ;
 388                         e.printStackTrace() ;
 389                         return null ;
 390                 }
 391
 392                 return gr ;
 393         }
 394
 395
 396         /**
 397          * Read a Grid graph from a file.
 398          * @param _file File's name
 399          * @param _path File's path
 400          * @return The Grid graph read
 401          */
 402         public static Grid readGrid( String _path, String _file )
 403         {
 404                 if ( _file.equals( "" ) )
 405                 {
 406                         System.err.println( "No file's name !\n" ) ;
 407                         return null ;
 408                 }
 409
 410                 if ( ! _file.endsWith( ".xml" ) )
 411                 {
 412                         _file = _file + ".xml"; // Adding xml extension to file
 413                 }
 414
 415                 String path = "" ;
 416
 417                 if( _path.length() != 0 )
 418                 {
 419                         path = _path+"/"+_file ;
 420                 } else {
 421                         path = new String( "./" + _file ) ;
 422                 }
 423
 424                 Grid gr = null ;
 425
 426                 XStream xstream = new XStream( new DomDriver() ) ;
 427
 428                 try {
 429                         gr = (Grid) xstream.fromXML( new FileInputStream( path ) ) ;
 430                 } catch( FileNotFoundException e ) {
 431                         System.err.println( "File not found !\n" ) ;
 432                         e.printStackTrace();
 433                         return null ;
 434                 } catch( ClassCastException e ) {
 435                         System.err.println( "The file does not contain a valid Grid" ) ;
 436                         e.printStackTrace() ;
 437                         return null ;
 438                 }
 439
 440                 return gr ;
 441         }
 442
 443
 444         /**
 445          * Read a Mapping done from a file.
 446          * @param _file File's name
 447          * @param _path File's path
 448          * @return The Mapping read
 449          */
 450         public static Mapping readMapping( String _path, String _file )
 451         {
 452                 if ( _file.equals( "" ) )
 453                 {
 454                         System.err.println( "No file's name !\n" ) ;
 455                         return null ;
 456                 }
 457
 458                 if ( ! _file.endsWith( ".xml" ) )
 459                 {
 460                         _file = _file + ".xml"; // Adding xml extension to file
 461                 }
 462
 463                 String path = "" ;
 464
 465                 if( _path.length() != 0 )
 466                 {
 467                         path = _path+"/"+_file ;
 468                 } else {
 469                         path = new String( "./" + _file ) ;
 470                 }
 471
 472                 Mapping mp = null ;
 473
 474                 XStream xstream = new XStream( new DomDriver() ) ;
 475
 476                 try {
 477                         mp = (Mapping) xstream.fromXML( new FileInputStream( path ) ) ;
 478                 } catch( FileNotFoundException e ) {
 479                         System.err.println( "File not found !\n" ) ;
 480                         e.printStackTrace();
 481                         return null ;
 482                 } catch( ClassCastException e ) {
 483                         System.err.println( "The file does not contain a valid Grid" ) ;
 484                         e.printStackTrace() ;
 485                         return null ;
 486                 }
 487
 488                 return mp ;
 489         }
 490
 491 }
 492
 493
 494 /** La programmation est un art, respectons ceux qui la pratiquent !! **/