org.mpisws.p2p.filetransfer
Interface FileAllocationStrategy

All Known Implementing Classes:

TempFileAllocationStrategy

public interface FileAllocationStrategy

Tells FileTransfer where to store the bytes of a file, usually a temp file.

Author:

Jeff Hoye

Method Summary

void	fileCancelled(ByteBuffer metadata, File f, long offset, long downloadedLength, long requestedLength, Exception reason) Notification of a cancelled transfer.
File	getFile(ByteBuffer metadata, long offset, long length)

Method Detail

getFile

File getFile(ByteBuffer metadata,
             long offset,
             long length)
             throws IOException

Parameters:

metadata - application specific, often the file name

size - the total file size

start - the first byte intended to transfer

finish - the last byte intended to transfer

Returns:

Throws:

IOException

fileCancelled

void fileCancelled(ByteBuffer metadata,
                   File f,
                   long offset,
                   long downloadedLength,
                   long requestedLength,
                   Exception reason)

Notification of a cancelled transfer.

Parameters:

metadata - application specific, often the file name

f - the file that was given by this strategy before

offset - the beginning point in the file of this file transfer

downloadedLength - the actual "valid" downloaded length

requestedLength - the length of the original file transfer request