com.twitter.distributedlog.io

Class LZ4CompressionCodec

java.lang.Object

com.twitter.distributedlog.io.LZ4CompressionCodec

All Implemented Interfaces:

CompressionCodec

public class LZ4CompressionCodec
extends Object
implements CompressionCodec

All functions are thread safe.

Nested Class Summary

Nested classes/interfaces inherited from interface com.twitter.distributedlog.io.CompressionCodec

CompressionCodec.Type

Constructor Summary

Constructors

Constructor and Description
LZ4CompressionCodec()

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	compress(byte[] data, int offset, int length, org.apache.bookkeeper.stats.OpStatsLogger compressionStat) Return the compressed data as a byte array.
byte[]	decompress(byte[] data, int offset, int length, int decompressedSize, org.apache.bookkeeper.stats.OpStatsLogger decompressionStat) Return the decompressed data as a byte array.
byte[]	decompress(byte[] data, int offset, int length, org.apache.bookkeeper.stats.OpStatsLogger decompressionStat) Return the decompressed data as a byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

LZ4CompressionCodec

public LZ4CompressionCodec()

Method Detail

compress

public byte[] compress(byte[] data,
              int offset,
              int length,
              org.apache.bookkeeper.stats.OpStatsLogger compressionStat)

Description copied from interface: CompressionCodec

Return the compressed data as a byte array.

Specified by:

compress in interface CompressionCodec

Parameters:

data - The data to be compressed

offset - The offset in the bytes of data to compress

length - The number of bytes of data to compress

compressionStat - The stat to use for timing the compression operation

Returns:

The compressed data The returned byte array is sized to the length of the compressed data

decompress

public byte[] decompress(byte[] data,
                int offset,
                int length,
                org.apache.bookkeeper.stats.OpStatsLogger decompressionStat)

Description copied from interface: CompressionCodec

Return the decompressed data as a byte array.

Specified by:

decompress in interface CompressionCodec

Parameters:

data - The data to be decompressed

offset - The offset in the bytes of data to decompress

length - The number of bytes of data to decompress

decompressionStat - The stat to use for timing the decompression operation

Returns:

The decompressed data

decompress

public byte[] decompress(byte[] data,
                int offset,
                int length,
                int decompressedSize,
                org.apache.bookkeeper.stats.OpStatsLogger decompressionStat)

Description copied from interface: CompressionCodec

Return the decompressed data as a byte array.

Specified by:

decompress in interface CompressionCodec

Parameters:

data - The data to the decompressed

offset - The offset in the bytes of data to decompress

length - The number of bytes of data to decompress

decompressedSize - The exact size of the decompressed data

decompressionStat - The stat to use for timing the decompression operation

Returns:

The decompressed data