rpdownload.java

这是一个基于java编写的torrent的P2P源码

/*
 * File    : PRDownload.java
 * Created : 28-Jan-2004
 * By      : parg
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.pluginsimpl.remote.download;

/**
 * @author parg
 *
 */

import java.io.File;
import java.util.Map;

import org.gudy.azureus2.plugins.disk.DiskManager;
import org.gudy.azureus2.plugins.disk.DiskManagerFileInfo;
import org.gudy.azureus2.plugins.download.*;
import org.gudy.azureus2.plugins.download.session.SessionAuthenticator;
import org.gudy.azureus2.plugins.peers.PeerManager;
import org.gudy.azureus2.plugins.torrent.*;

import org.gudy.azureus2.pluginsimpl.remote.*;
import org.gudy.azureus2.pluginsimpl.remote.disk.RPDiskManagerFileInfo;
import org.gudy.azureus2.pluginsimpl.remote.ipfilter.RPIPRange;
import org.gudy.azureus2.pluginsimpl.remote.torrent.*;


public class 
RPDownload
	extends		RPObject
	implements 	Download
{
	protected transient Download		delegate;

		// don't change these field names as they are visible on XML serialisation
	
	public RPTorrent				torrent;
	public RPDownloadStats			stats;
	public RPDownloadAnnounceResult	announce_result;
	public RPDownloadScrapeResult	scrape_result;
	
	public int						position;
	public boolean					force_start;
	
	public static RPDownload
	create(
		Download		_delegate )
	{
		RPDownload	res =(RPDownload)_lookupLocal( _delegate );
		
		if ( res == null ){
			
			res = new RPDownload( _delegate );
		}
			
		return( res );
	}
	
	protected
	RPDownload(
		Download		_delegate )
	{
		super( _delegate );
			
			// torrent can be null if broken
		
		if ( delegate.getTorrent() != null ){
			
			torrent = (RPTorrent)_lookupLocal( delegate.getTorrent());
		
			if ( torrent == null ){
				
				torrent = RPTorrent.create( delegate.getTorrent());
			}
		}
		
		stats = (RPDownloadStats)_lookupLocal( delegate.getStats());
		
		if ( stats == null ){
			
			stats = RPDownloadStats.create( delegate.getStats());
		}
		
		announce_result = (RPDownloadAnnounceResult)_lookupLocal( delegate.getLastAnnounceResult());
		
		if ( announce_result == null ){
			
			announce_result = RPDownloadAnnounceResult.create( delegate.getLastAnnounceResult());
		}
		
		scrape_result = (RPDownloadScrapeResult)_lookupLocal( delegate.getLastScrapeResult());
		
		if ( scrape_result == null ){
			
			scrape_result = RPDownloadScrapeResult.create( delegate.getLastScrapeResult());
		}
	}
	
	protected void
	_setDelegate(
		Object		_delegate )
	{
		delegate = (Download)_delegate;
		
		position	= delegate.getPosition();
		force_start	= delegate.isForceStart();
	}
	
	public Object
	_setLocal()
	
		throws RPException
	{
		Object res = _fixupLocal();
		
		if ( torrent != null ){
			
			torrent._setLocal();
		}
		
		stats._setLocal();
		
		announce_result._setLocal();
		
		scrape_result._setLocal();
		
		return( res );
	}
	
	public void
	_setRemote(
		RPRequestDispatcher		dispatcher )
	{
		super._setRemote( dispatcher );
		
		if ( torrent != null ){
			
			torrent._setRemote( dispatcher );
		}
		
		stats._setRemote( dispatcher );
		
		announce_result._setRemote( dispatcher );
		
		scrape_result._setRemote( dispatcher );
	}
	
	public RPReply
	_process(
		RPRequest	request	)
	{
		String	method = request.getMethod();
		
		if ( method.equals( "initialize")){
			
			try{
				delegate.initialize();
				
			}catch( DownloadException e ){
				
				return( new RPReply(e));
			}
			
			return( null );
			
		}else if ( method.equals( "start")){
			
			try{
				delegate.start();
				
			}catch( DownloadException e ){
				
				return( new RPReply(e));
			}
			
			return( null );
			
		}else if ( method.equals( "restart")){
			
			try{
				delegate.restart();
				
			}catch( DownloadException e ){
				
				return( new RPReply(e));
			}
			
			return( null );
			
		}else if ( method.equals( "stop")){
			
			try{
				delegate.stop();
				
			}catch( DownloadException e ){
				
				return( new RPReply(e));
			}
			
			return( null );
			
		}else if ( method.equals( "remove")){
			
			try{
				delegate.remove();
				
			}catch( Throwable e ){
				
				return( new RPReply(e));
			}
			
			return( null );
			
		}else if ( method.equals( "setForceStart[boolean]")){
			
			boolean	b = ((Boolean)request.getParams()[0]).booleanValue();
			
			delegate.setForceStart( b );
			
			return( null );
			
		}else if ( method.equals( "setPosition[int]")){
			
			int	p = ((Integer)request.getParams()[0]).intValue();
			
			delegate.setPosition( p );
			
			return( null );
			
		}else if ( method.equals( "moveUp")){
						
			delegate.moveUp();
			
			return( null );
			
		}else if ( method.equals( "moveDown")){
			
			delegate.moveDown();
			
			return( null );
	
		}else if ( method.equals( "moveTo[int]")){
			
			int	p = ((Integer)request.getParams()[0]).intValue();
			
			delegate.setPosition( p );
			
			return( null );
			
		}else if ( method.equals( "setPriority[int]")){
			
			delegate.setPriority(((Integer)request.getParams()[0]).intValue());
			
			return( null );
			
		}else if ( method.equals( "requestTrackerAnnounce")){
			
			delegate.requestTrackerAnnounce();
			
			return( null );
		
		}else if ( method.equals( "getDiskManagerFileInfo")){
			
			DiskManagerFileInfo[] info = delegate.getDiskManagerFileInfo();
					
			RPDiskManagerFileInfo[] rp_info = new RPDiskManagerFileInfo[info.length];
			
			for (int i=0;i<rp_info.length;i++){
				
				rp_info[i] = RPDiskManagerFileInfo.create( info[i] );
			}
			
			return( new RPReply( rp_info ));
		}
		
		throw( new RPException( "Unknown method: " + method ));
	}
	
		// ***************************************************
	
	public int
	getState()
	{
		notSupported();
		
		return(0);
	}
	
	public int
	getSubState()
	{
		notSupported();
		
		return(0);
	}

	public String
	getErrorStateDetails()
	{
		notSupported();
		
		return( null );
	}
	
	public boolean
	getFlag(
		long	flag )
	{
		notSupported();
		
		return( false );
	}
	
	public int
	getIndex()
	{
		notSupported();
		
		return( 0 );
	}
	
	public Torrent
	getTorrent()
	{
		return( torrent );
	}
	
  
  public byte[] getDownloadPeerId() {
    return delegate.getDownloadPeerId();
  }
  
  
  public boolean isMessagingEnabled() {  return delegate.isMessagingEnabled();  }

  public void setMessagingEnabled( boolean enabled ) {
    delegate.setMessagingEnabled( enabled );
  }
  
  
  
	public void
	initialize()
	
		throws DownloadException	
	{
		try{
			_dispatcher.dispatch( new RPRequest( this, "initialize", null )).getResponse();
			
		}catch( RPException e ){
			
			if ( e.getCause() instanceof DownloadException ){
				
				throw((DownloadException)e.getCause());
			}
			
			throw( e );
		}
	}
	
	public void
	start()
	
		throws DownloadException
	{
		try{
			_dispatcher.dispatch( new RPRequest( this, "start", null )).getResponse();
			
		}catch( RPException e ){
			
			if ( e.getCause() instanceof DownloadException ){
				
				throw((DownloadException)e.getCause());
			}
			
			throw( e );
		}
	}
	
	public void
	stop()
	
		throws DownloadException
	{
		try{
			_dispatcher.dispatch( new RPRequest( this, "stop", null )).getResponse();
			
		}catch( RPException e ){
			
			if ( e.getCause() instanceof DownloadException ){
				
				throw((DownloadException)e.getCause());
			}
			
			throw( e );
		}
	}
	
	public void
	restart()
	
		throws DownloadException
	{
		try{
			_dispatcher.dispatch( new RPRequest( this, "restart", null )).getResponse();
			
		}catch( RPException e ){
			
			if ( e.getCause() instanceof DownloadException ){
				
				throw((DownloadException)e.getCause());
			}
			
			throw( e );
		}
	}
	
	public boolean
	isStartStopLocked()
	{
		notSupported();
		
		return( false );
	}
	
	public boolean
	isPaused()
	{
		notSupported();
		
		return( false );
	}
	
	public void
	pause()
	{
		notSupported();
	}
	
	public void
	resume()
	{
		notSupported();
	}
	
	public int
	getPriority()
	{
		//do nothing deprecated
	  return 0;
	}
	
	public void
	setPriority(
		int		priority )
	{
		//Do nothing, deprecated
	}
	
	/**
	 * @deprecated
	 */
	
	public boolean
	isPriorityLocked()
	{
	  	//	Do nothing, deprecated
		
		return( false );
	}