Package com.backblaze.b2.util

Class B2FlushAndSyncFileOnCloseOutputStream

java.lang.Object

java.io.OutputStream

com.backblaze.b2.util.B2FlushAndSyncFileOnCloseOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class B2FlushAndSyncFileOnCloseOutputStream
extends java.io.OutputStream

Wrap your FileOutputStreams with a B2FlushAndSyncFileOnCloseOutputStream to ensure that your files are always sync'd before being closed. See http://www.pointsoftware.ch/en/4-ext4-vs-ext3-filesystem-and-why-delayed-allocation-is-bad/

Method Summary

Modifier and Type	Method	Description
void	close()
static B2FlushAndSyncFileOnCloseOutputStream	create(java.io.File outputFile)
static B2FlushAndSyncFileOnCloseOutputStream	create(java.io.FileOutputStream out)
void	flush()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Method Detail

write

public void write(byte[] b)
           throws java.io.IOException

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Overrides:

write in class java.io.OutputStream

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

write

public void write(int b)
           throws java.io.IOException

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

create

public static B2FlushAndSyncFileOnCloseOutputStream create(java.io.FileOutputStream out)

Parameters:

out - the stream to wrap

Returns:

a new stream which will carefully finish the file on disk when it's closed.

create

public static B2FlushAndSyncFileOnCloseOutputStream create(java.io.File outputFile)
                                                    throws java.io.FileNotFoundException

Parameters:

outputFile - the file to write to. will be wrapped by a new FileOutputStream.

Returns:

a new stream which will carefully finish the file on disk when it's closed.

Throws:

java.io.FileNotFoundException