Package org.apache.nifi.remote.io

Class CompressionInputStream

java.lang.Object

java.io.InputStream

org.apache.nifi.remote.io.CompressionInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class CompressionInputStream
extends InputStream

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	allDataRead
private byte[]	buffer
private int	bufferIndex
private byte[]	compressedBuffer
private boolean	eos
private final byte[]	fourByteBuffer
private final InputStream	in
private final Inflater	inflater

Constructor Summary

Constructors

Constructor	Description
CompressionInputStream(InputStream in)

Method Summary

Modifier and Type	Method	Description
protected void	bufferAndDecompress()
void	close()	Calls Inflater.end() to free acquired memory to prevent OutOfMemory error.
private void	fillBuffer(byte[] buffer)
private boolean	isBufferEmpty()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
protected void	readChunkHeader()
private String	toHex(byte[] array)
private int	toInt(byte[] data)

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Details

in

private final InputStream in

inflater

private final Inflater inflater

compressedBuffer

private byte[] compressedBuffer

buffer

private byte[] buffer

bufferIndex

private int bufferIndex

eos

private boolean eos

allDataRead

private boolean allDataRead

fourByteBuffer

private final byte[] fourByteBuffer

Constructor Details

CompressionInputStream

public CompressionInputStream(InputStream in)

Method Details

toHex

private String toHex(byte[] array)

readChunkHeader

protected void readChunkHeader()
                        throws IOException

Throws:

IOException

toInt

private int toInt(byte[] data)

bufferAndDecompress

protected void bufferAndDecompress()
                            throws IOException

Throws:

IOException

fillBuffer

private void fillBuffer(byte[] buffer)
                 throws IOException

Throws:

IOException

isBufferEmpty

private boolean isBufferEmpty()

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Calls Inflater.end() to free acquired memory to prevent OutOfMemory error. However, does NOT close underlying InputStream.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException - for any issues closing underlying stream