/*
* Created on 16 May 2006
* Created by Paul Gardner
* Copyright (C) 2006 Aelitis, All Rights Reserved.
*
* 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, or (at your option) any later version.
* 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.
* 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.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.plugins.extseed.impl;
import java.util.List;
import org.gudy.azureus2.plugins.peers.PeerReadRequest;
import com.aelitis.azureus.plugins.extseed.ExternalSeedException;
import com.aelitis.azureus.plugins.extseed.util.ExternalSeedHTTPDownloaderListener;
public class
ExternalSeedReaderRequest
implements ExternalSeedHTTPDownloaderListener
{
private ExternalSeedReaderImpl reader;
private List<PeerReadRequest> requests;
private int start_piece_number;
private int start_piece_offset;
private int length;
private int current_request_index = 0;
private PeerReadRequest current_request;
private byte[] current_buffer;
private int current_position;
protected
ExternalSeedReaderRequest(
ExternalSeedReaderImpl _reader,
List<PeerReadRequest> _requests )
{
reader = _reader;
requests = _requests;
for (int i=0;i<requests.size();i++){
PeerReadRequest req = (PeerReadRequest)requests.get(i);
if ( i == 0 ){
start_piece_number = req.getPieceNumber();
start_piece_offset = req.getOffset();
}
length += req.getLength();
}
}
public int
getStartPieceNumber()
{
return( start_piece_number );
}
public int
getStartPieceOffset()
{
return( start_piece_offset );
}
public int
getLength()
{
return( length );
}
public byte[]
getBuffer()
throws ExternalSeedException
{
if ( current_request_index >= requests.size()){
throw( new ExternalSeedException( "Insufficient buffers to satisfy request" ));
}
current_request = (PeerReadRequest)requests.get(current_request_index++);
current_buffer = new byte[ current_request.getLength()];
current_position = 0;
return( current_buffer );
}
public boolean
isCancelled()
{
for (int i=0;i<requests.size();i++){
PeerReadRequest req = requests.get(i);
if ( req.isCancelled()){
return( true );
}
}
return( false );
}
public void
done()
{
reader.informComplete( current_request, current_buffer );
}
protected void
cancel()
{
for (int i=0;i<requests.size();i++){
PeerReadRequest req = requests.get(i);
if ( !req.isCancelled()){
req.cancel();
}
}
}
public void
failed()
{
for (int i=current_request_index;i<requests.size();i++){
PeerReadRequest request = requests.get(i);
reader.informFailed( request );
}
}
public void
setBufferPosition(
int pos )
{
current_position = pos;
}
public int
getBufferPosition()
{
return( current_position );
}
public int
getBufferLength()
{
return( current_buffer.length );
}
public int
getPercentDoneOfCurrentIncomingRequest()
{
PeerReadRequest req = current_request;
if ( req == null ){
return( 0 );
}
return(( 100 * current_position ) / req.getLength() );
}
public int
getPermittedBytes()
throws ExternalSeedException
{
PeerReadRequest req = current_request;
if ( req == null ){
req = requests.get(0);
}
if ( req.isCancelled()){
throw( new ExternalSeedException( "Request cancelled" ));
}
return( reader.getPermittedBytes());
}
public int
getPermittedTime()
{
return( 0 ); // no timeout
}
public void
reportBytesRead(
int num )
{
reader.reportBytesRead( num );
}
}