Package hudson.util

Class HeadBufferingStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

hudson.util.HeadBufferingStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class HeadBufferingStream
extends FilterInputStream

FilterInputStream that buffers the first N bytes to a byte array on the side. This byte array can be then accessed later.

Useful for sniffing the content of the stream after the error is discovered.

Author:

Kohsuke Kawaguchi

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
HeadBufferingStream(InputStream in, int sideBufferSize)

Method Summary

Modifier and Type	Method	Description
void	fillSide()	Read until we fill up the side buffer.
byte[]	getSideBuffer()	Gets the side buffer content.
int	read()
int	read(byte[] b, int off, int len)

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

HeadBufferingStream

public HeadBufferingStream(InputStream in,
                           int sideBufferSize)

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

fillSide

public void fillSide()
              throws IOException

Read until we fill up the side buffer.

Throws:

IOException

getSideBuffer

public byte[] getSideBuffer()

Gets the side buffer content.