Esempio n. 1
0
  // function to do the join use case
  public static void share() throws Exception {
    HttpPost method = new HttpPost(url + "/share");
    String ipAddress = null;

    Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();
    while (en.hasMoreElements()) {
      NetworkInterface ni = (NetworkInterface) en.nextElement();
      if (ni.getName().equals("eth0")) {
        Enumeration<InetAddress> en2 = ni.getInetAddresses();
        while (en2.hasMoreElements()) {
          InetAddress ip = (InetAddress) en2.nextElement();
          if (ip instanceof Inet4Address) {
            ipAddress = ip.getHostAddress();
            break;
          }
        }
        break;
      }
    }

    method.setEntity(new StringEntity(username + ';' + ipAddress, "UTF-8"));
    try {
      ResponseHandler<String> responseHandler = new BasicResponseHandler();
      connIp = client.execute(method, responseHandler);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }

    // get present time
    date = new Date();
    long start = date.getTime();

    // Execute the vishwa share process
    Process p = Runtime.getRuntime().exec("java -jar vishwa/JVishwa.jar " + connIp);

    String ch = "alive";
    System.out.println("Type kill to unjoin from the grid");

    while (!ch.equals("kill")) {
      BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
      ch = in.readLine();
    }

    p.destroy();

    date = new Date();
    long end = date.getTime();
    long durationInt = end - start;

    String duration = String.valueOf(durationInt);
    method = new HttpPost(url + "/shareAck");
    method.setEntity(new StringEntity(username + ";" + duration, "UTF-8"));
    try {
      client.execute(method);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }
  }
Esempio n. 2
0
  // function to do the compute use case
  public static void compute() throws Exception {
    HttpPost method = new HttpPost(url + "/compute");

    method.setEntity(new StringEntity(username, "UTF-8"));

    try {
      ResponseHandler<String> responseHandler = new BasicResponseHandler();
      connIp = client.execute(method, responseHandler);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }

    System.out.println("Give the file name which has to be put in the grid for computation");

    // input of the file name to be computed
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    String name = in.readLine();

    // get the absolute path of the current working directory
    File directory = new File(".");
    String pwd = directory.getAbsolutePath();

    // get present time
    date = new Date();
    long start = date.getTime();

    String cmd = "java -classpath " + pwd + "/vishwa/JVishwa.jar:. " + name + " " + connIp;
    System.out.println(cmd);

    // Execute the vishwa compute process
    Process p = Runtime.getRuntime().exec(cmd);

    // wait till the compute process is completed
    // check for the status code (0 for successful termination)
    int status = p.waitFor();

    if (status == 0) {
      System.out.println("Compute operation successful. Check the directory for results");
    }

    date = new Date();
    long end = date.getTime();
    long durationInt = end - start;

    String duration = String.valueOf(durationInt);
    method = new HttpPost(url + "/computeAck");
    method.setEntity(new StringEntity(username + ";" + duration, "UTF-8"));
    try {
      client.execute(method);
    } catch (IOException e) {
      System.err.println("Fatal transport error: " + e.getMessage());
      e.printStackTrace();
    }
  }