/*
* Created on 02-Nov-2004
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 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.core.diskmanager.cache.impl;
/**
* @author parg
*
*/
import java.io.File;
import org.gudy.azureus2.core3.torrent.TOTorrentFile;
import org.gudy.azureus2.core3.util.DirectByteBuffer;
import com.aelitis.azureus.core.diskmanager.cache.*;
import com.aelitis.azureus.core.diskmanager.file.FMFile;
import com.aelitis.azureus.core.diskmanager.file.FMFileManagerException;
public class
CacheFileWithoutCache
implements CacheFile
{
protected CacheFileManagerImpl manager;
protected FMFile file;
protected TOTorrentFile torrent_file;
private long bytes_written;
private long bytes_read;
protected
CacheFileWithoutCache(
CacheFileManagerImpl _manager,
FMFile _file,
TOTorrentFile _torrent_file )
{
manager = _manager;
file = _file;
torrent_file = _torrent_file;
// System.out.println( "without cache = " + file.getFile().toString());
}
public TOTorrentFile
getTorrentFile()
{
return( torrent_file );
}
public boolean
exists()
{
return( file.exists());
}
public void
moveFile(
File new_file )
throws CacheFileManagerException
{
try{
file.moveFile( new_file );
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
renameFile(
String new_file )
throws CacheFileManagerException
{
try{
file.renameFile( new_file );
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
setAccessMode(
int mode )
throws CacheFileManagerException
{
try{
file.setAccessMode( mode==CF_READ?FMFile.FM_READ:FMFile.FM_WRITE );
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public int
getAccessMode()
{
return( file.getAccessMode()==FMFile.FM_READ?CF_READ:CF_WRITE );
}
public void
setStorageType(
int type )
throws CacheFileManagerException
{
try{
file.setStorageType( CacheFileManagerImpl.convertCacheToFileType( type ));
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public int
getStorageType()
{
return( CacheFileManagerImpl.convertFileToCacheType( file.getStorageType()));
}
public long
getLength()
throws CacheFileManagerException
{
try{
return( file.exists() ? file.getLength() : 0);
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
return( 0 );
}
}
public long
compareLength(
long compare_to )
throws CacheFileManagerException
{
return( getLength() - compare_to );
}
public void
setLength(
long length )
throws CacheFileManagerException
{
try{
file.setLength( length );
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
setPieceComplete(
int piece_number,
DirectByteBuffer piece_data )
throws CacheFileManagerException
{
try{
file.setPieceComplete( piece_number, piece_data );
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
read(
DirectByteBuffer[] buffers,
long position,
short policy )
throws CacheFileManagerException
{
int read_length = 0;
for (int i=0;i<buffers.length;i++){
read_length += buffers[i].remaining(DirectByteBuffer.SS_CACHE);
}
try{
file.read( buffers, position );
manager.fileBytesRead( read_length );
bytes_read += read_length;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
read(
DirectByteBuffer buffer,
long position,
short policy )
throws CacheFileManagerException
{
int read_length = buffer.remaining(DirectByteBuffer.SS_CACHE);
try{
file.read( buffer, position );
manager.fileBytesRead( read_length );
bytes_read += read_length;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
write(
DirectByteBuffer buffer,
long position )
throws CacheFileManagerException
{
int write_length = buffer.remaining(DirectByteBuffer.SS_CACHE);
try{
file.write( buffer, position );
manager.fileBytesWritten( write_length );
bytes_written += write_length;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
write(
DirectByteBuffer[] buffers,
long position )
throws CacheFileManagerException
{
int write_length = 0;
for (int i=0;i<buffers.length;i++){
write_length += buffers[i].remaining(DirectByteBuffer.SS_CACHE);
}
try{
file.write( buffers, position );
manager.fileBytesWritten( write_length );
bytes_written += write_length;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
writeAndHandoverBuffer(
DirectByteBuffer buffer,
long position )
throws CacheFileManagerException
{
int write_length = buffer.remaining(DirectByteBuffer.SS_CACHE);
boolean write_ok = false;
try{
file.write( buffer, position );
manager.fileBytesWritten( write_length );
bytes_written += write_length;
write_ok = true;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}finally{
if ( write_ok ){
buffer.returnToPool();
}
}
}
public void
writeAndHandoverBuffers(
DirectByteBuffer[] buffers,
long position )
throws CacheFileManagerException
{
int write_length = 0;
for (int i=0;i<buffers.length;i++){
write_length += buffers[i].remaining(DirectByteBuffer.SS_CACHE);
}
boolean write_ok = false;
try{
file.write( buffers, position );
manager.fileBytesWritten( write_length );
bytes_written += write_length;
write_ok = true;
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}finally{
if ( write_ok ){
for (int i=0;i<buffers.length;i++){
buffers[i].returnToPool();
}
}
}
}
public void
flushCache()
throws CacheFileManagerException
{
try{
file.flush();
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public void
clearCache()
throws CacheFileManagerException
{
}
public void
close()
throws CacheFileManagerException
{
try{
file.close();
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
public boolean
isOpen()
{
return( file.isOpen());
}
public long
getSessionBytesRead()
{
return( bytes_read );
}
public long
getSessionBytesWritten()
{
return( bytes_written );
}
public void
delete()
throws CacheFileManagerException
{
try{
file.delete();
}catch( FMFileManagerException e ){
manager.rethrow(this,e);
}
}
}