Package org.apache.bookkeeper.util

Class IOUtils

java.lang.Object

org.apache.bookkeeper.util.IOUtils

public class IOUtils
extends Object

An utility class for I/O related functionality.

Constructor Summary

Constructors

Constructor	Description
IOUtils()

Method Summary

Modifier and Type	Method	Description
static void	close(org.slf4j.Logger log, Closeable closeable)	Close the Closeable object and ignore any IOException or null pointers.
static void	close(org.slf4j.Logger log, Closeable... closeables)	Close the Closeable objects and ignore any IOException or null pointers.
static boolean	confirmPrompt(String prompt)	Confirm prompt for the console operations.
static File	createTempDir(String prefix, String suffix)	Create a temp directory with given prefix and suffix.
static File	createTempDir(String prefix, String suffix, File dir)	Create a temp directory with given prefix and suffix in the specified dir.
static File	createTempFileAndDeleteOnExit(String prefix, String suffix)	Create a temp directory with given prefix and suffix.
static void	writeFully(WritableByteChannel bc, ByteBuffer buf)	Write a ByteBuffer to a WritableByteChannel, handling short writes.

Methods inherited from class java.lang.Object

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

Constructor Details

IOUtils

public IOUtils()

Method Details

close

public static void close(org.slf4j.Logger log,
 Closeable... closeables)

Close the Closeable objects and ignore any IOException or null pointers. Must only be used for cleanup in exception handlers.

Parameters:

log - the log to record problems to at debug level. Can be null.

closeables - the objects to close

close

public static void close(org.slf4j.Logger log,
 Closeable closeable)

Close the Closeable object and ignore any IOException or null pointers. Must only be used for cleanup in exception handlers.

Parameters:

log - the log to record problems to at debug level. Can be null.

closeable - the objects to close

confirmPrompt

public static boolean confirmPrompt(String prompt)
                             throws IOException

Confirm prompt for the console operations.

Parameters:

prompt - Prompt message to be displayed on console

Returns:

Returns true if confirmed as 'Y', returns false if confirmed as 'N'

Throws:

IOException

writeFully

public static void writeFully(WritableByteChannel bc,
 ByteBuffer buf)
                       throws IOException

Write a ByteBuffer to a WritableByteChannel, handling short writes.

Parameters:

bc - The WritableByteChannel to write to

buf - The input buffer

Throws:

IOException - On I/O error

createTempDir

public static File createTempDir(String prefix,
 String suffix)
                          throws IOException

Create a temp directory with given prefix and suffix.

Parameters:

prefix - prefix of the directory name

suffix - suffix of the directory name

Returns:

directory created

Throws:

IOException

createTempDir

public static File createTempDir(String prefix,
 String suffix,
 File dir)
                          throws IOException

Create a temp directory with given prefix and suffix in the specified dir.

Parameters:

prefix - prefix of the directory name

suffix - suffix of the directory name

dir - The directory in which the file is to be created, or null if the default temporary-file directory is to be used

Returns:

directory created

Throws:

IOException

createTempFileAndDeleteOnExit

public static File createTempFileAndDeleteOnExit(String prefix,
 String suffix)
                                          throws IOException

Create a temp directory with given prefix and suffix.

Parameters:

prefix - prefix of the directory name

suffix - suffix of the directory name

Returns:

directory created

Throws:

IOException