Package org.jgroups.raft.filelog

Class FileStorage

java.lang.Object

org.jgroups.raft.filelog.FileStorage

All Implemented Interfaces:

Closeable, AutoCloseable

public final class FileStorage
extends Object
implements Closeable

Base class to store data in a file.

Since:

0.5.4

Author:

Pedro Ruivo

Constructor Summary

Constructors

Constructor	Description
FileStorage(File storageFile)
FileStorage(File storageFile, int writeAheadBytes)

Method Summary

Modifier and Type	Method	Description
void	close()
void	delete()
void	flush()
long	getCachedFileSize()
File	getStorageFile()
ByteBuffer	ioBufferWith(int requiredCapacity)
boolean	isOpened()
void	open()
ByteBuffer	read(long position, int expectedLength)
void	truncateFrom(long position)
void	truncateTo(long size)
int	write(long position)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FileStorage

public FileStorage(File storageFile)

FileStorage

public FileStorage(File storageFile,
 int writeAheadBytes)

Method Details

ioBufferWith

public ByteBuffer ioBufferWith(int requiredCapacity)

getCachedFileSize

public long getCachedFileSize()

getStorageFile

public File getStorageFile()

open

public void open()
          throws IOException

Throws:

IOException

write

public int write(long position)
          throws IOException

Throws:

IOException

read

public ByteBuffer read(long position,
 int expectedLength)
                throws IOException

Throws:

IOException

isOpened

public boolean isOpened()

flush

public void flush()
           throws IOException

Throws:

IOException

truncateTo

public void truncateTo(long size)
                throws IOException

Throws:

IOException

truncateFrom

public void truncateFrom(long position)
                  throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

delete

public void delete()
            throws IOException

Throws:

IOException