src/InGuest.java

   1 import java.io.BufferedReader;
   2 import java.io.BufferedWriter;
   3 import java.io.FileNotFoundException;
   4 import java.io.FileReader;
   5 import java.io.IOException;
   6 import java.io.OutputStreamWriter;
   7 import java.io.PrintWriter;
   8 import java.net.InetAddress;
   9 import java.net.Socket;
  10 import java.net.UnknownHostException;
  11
  12
  13 public class InGuest
  14 {
  15
  16         private static String name ;
  17         private static String IP ;
  18         private static String path = "/tmp/vm_host_ip" ;
  19         private static FileReader fr ;
  20         private static String host_ip ;
  21         private static String host_port ;
  22
  23         public static void main( String argv[] )
  24         {
  25                 System.out.println( "Running information program for HpcVm ..." ) ;
  26
  27                 /** Retrieving informations **/
  28                 try {
  29                         InetAddress ia = InetAddress.getLocalHost() ;
  30                         name = ia.getCanonicalHostName() ;
  31                         IP = ia.getHostAddress() ;
  32                 } catch( Exception e ) {
  33                         System.err.println( "Error: Unknown Host: " + e ) ;
  34                 }
  35
  36                 /** Retrieving host informations **/
  37                 try {
  38                         fr = new FileReader( path ) ;
  39                 } catch( FileNotFoundException e ) {
  40                         e.printStackTrace() ;
  41                 }
  42                 BufferedReader bf = new BufferedReader( fr ) ;
  43
  44                 String line = null ;
  45
  46                 try {
  47                         line = bf.readLine() ;
  48                 } catch( IOException e ) {
  49                         e.printStackTrace() ;
  50                 }
  51
  52                 String[] infos = line.split( " " ) ;
  53
  54                 try {
  55                         host_ip = infos[0] ;
  56                         host_port = infos[1] ;
  57                 } catch( Exception e ) {
  58                         e.printStackTrace() ;
  59                 }
  60
  61                 /* Close file */
  62                 try {
  63                         bf.close() ;
  64                         fr.close() ;
  65                 } catch( IOException e ) {
  66                         e.printStackTrace() ;
  67                 }
  68
  69
  70                 /** Sending informations to host **/
  71                 try {
  72                         Socket socket = new Socket( host_ip, Integer.parseInt( host_port ) ) ;
  73
  74                         PrintWriter pw = new PrintWriter( new BufferedWriter(
  75                                         new OutputStreamWriter( socket.getOutputStream() ) ), true ) ;
  76
  77                         pw.print( "infos" ) ;
  78
  79                         /* Sending name */
  80                         pw.print( name ) ;
  81
  82                         /* Sending IP */
  83                         pw.print( IP ) ;
  84
  85
  86                         /* Close streams */
  87                         pw.close() ;
  88                         socket.close() ;
  89
  90
  91                 } catch( NumberFormatException e ) {
  92                         e.printStackTrace();
  93                 } catch( UnknownHostException e ) {
  94                         e.printStackTrace() ;
  95                 } catch( IOException e ) {
  96                         e.printStackTrace() ;
  97                 }
  98
  99                 System.out.println( "... Ok" ) ;
 100         }
 101 }