package com.acme.bean;

import com.acme.bean.RemoteLocation;
import com.sun.mail.iap.ByteArray;

import javax.servlet.jsp.JspWriter;
import java.util.Hashtable;
import java.rmi.Remote;
import java.net.URL;
import java.io.*;

/**
 * @author morphie
 *         Date: 2005-feb-16
 *         Time: 06:54:28
 */

public class RemoteLocationManager implements Serializable
{
  private Hashtable entries=new Hashtable();

  public byte[] getLocation(String location, long timeout) throws IOException
  {
    RemoteLocation remote=(RemoteLocation)entries.get(location);
    if(remote==null)
      remote=new RemoteLocation();

   if(remote.expired())
       remote.setData(getRemoteData(location));

    remote.setTimeout(timeout);

    if(!entries.contains(location))
      entries.put(location,remote);
    return remote.getData();
  }

  private byte[] getRemoteData(String location) throws IOException
  {
    URL resource = new URL(location);
    BufferedReader in = new BufferedReader(new InputStreamReader(resource.openStream()));
    ByteArrayOutputStream data=new ByteArrayOutputStream();
    PrintWriter writer=new PrintWriter(data);
    String inputLine;
    while ((inputLine = in.readLine()) != null)
      writer.write(inputLine);
    in.close();
    return data.toByteArray();
  }

}