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A RMI-like distributed computing framework

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package org.sapia.ubik.mcast;

import java.io.*;

import java.net.DatagramPacket;


/**
 * @author Yanick Duchesne
 * 
 * Copyright:
Copyright © 2002-2003 Sapia Open Source Software. All Rights Reserved.
 * License:
Read the license.txt file of the jar or visit the
 *        license page at the Sapia OSS web site
 * 
 */
public class Util {
  public static Object fromDatagram(DatagramPacket pack)
    throws IOException, ClassNotFoundException {
    ByteArrayInputStream bis = new ByteArrayInputStream(pack.getData(),
        pack.getOffset(), pack.getLength());
    ObjectInputStream    ois = null;
    

    try {
      ois = new ObjectInputStream(bis);

      Object o = ois.readObject();

      return o;
    } finally {
      if (ois != null) {
        ois.close();
      }
    }
  }

  public static byte[] toBytes(Object o, int bufsize) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream(bufsize);
    ObjectOutputStream    ous = new ObjectOutputStream(bos);

    ous.writeObject(o);
    ous.flush();
    ous.close();

    return bos.toByteArray();
  }

  public static int getSizeInBytes(Object o) throws IOException {
    return toBytes(o, 1000).length;
  }
}