Package org.apache.pekko.stream.scaladsl

Class Compression

java.lang.Object

org.apache.pekko.stream.scaladsl.Compression

public class Compression
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
Compression()

Method Summary

Modifier and Type	Method	Description
static Flow<ByteString,ByteString,NotUsed>	deflate()	Creates a flow that deflate-compresses a stream of ByteString.
static Flow<ByteString,ByteString,NotUsed>	deflate(int level, boolean nowrap)	Same as deflate() with configurable level and nowrap
static Flow<ByteString,ByteString,NotUsed>	deflate(int level, boolean nowrap, boolean autoFlush)	Same as deflate() with configurable level, nowrap and autoFlush.
static Flow<ByteString,ByteString,NotUsed>	gunzip(int maxBytesPerChunk)	Deprecated. Use gzipDecompress instead.
static int	gunzip$default$1()
static Flow<ByteString,ByteString,NotUsed>	gzip()	Creates a flow that gzip-compresses a stream of ByteStrings.
static Flow<ByteString,ByteString,NotUsed>	gzip(int level)	Same as gzip() with a custom level.
static Flow<ByteString,ByteString,NotUsed>	gzip(int level, boolean autoFlush)	Same as gzip() with a custom level and configurable flush mode.
static Flow<ByteString,ByteString,NotUsed>	gzipDecompress(int maxBytesPerChunk)	Creates a Flow that decompresses a gzip-compressed stream of data.
static int	gzipDecompress$default$1()
static Flow<ByteString,ByteString,NotUsed>	inflate(int maxBytesPerChunk)	Creates a Flow that decompresses a deflate-compressed stream of data.
static Flow<ByteString,ByteString,NotUsed>	inflate(int maxBytesPerChunk, boolean nowrap)	Creates a Flow that decompresses a deflate-compressed stream of data.
static int	inflate$default$1()
static int	MaxBytesPerChunkDefault()

Methods inherited from class java.lang.Object

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

Constructor Detail

Compression

public Compression()

Method Detail

MaxBytesPerChunkDefault

public static final int MaxBytesPerChunkDefault()

gzip

public static Flow<ByteString,ByteString,NotUsed> gzip()

Creates a flow that gzip-compresses a stream of ByteStrings. Note that the compressor will flush after every single element in stream so that it is guaranteed that every pekko.util.ByteString coming out of the flow can be fully decompressed without waiting for additional data. This may come at a compression performance cost for very small chunks.

gzip

public static Flow<ByteString,ByteString,NotUsed> gzip(int level)

Same as gzip() with a custom level.

Parameters:

level - Compression level (0-9)

gzip

public static Flow<ByteString,ByteString,NotUsed> gzip(int level,
                                                                   boolean autoFlush)

Same as gzip() with a custom level and configurable flush mode.

Parameters:

level - Compression level (0-9)

autoFlush - If true will automatically flush after every single element in the stream.

Since:

1.3.0

gzipDecompress

public static Flow<ByteString,ByteString,NotUsed> gzipDecompress(int maxBytesPerChunk)

Creates a Flow that decompresses a gzip-compressed stream of data.

Parameters:

maxBytesPerChunk - Maximum length of an output pekko.util.ByteString chunk.

Since:

1.3.0

gzipDecompress$default$1

public static int gzipDecompress$default$1()

gunzip

public static Flow<ByteString,ByteString,NotUsed> gunzip(int maxBytesPerChunk)

Deprecated.

Use gzipDecompress instead. Since Pekko 1.3.0.

Creates a Flow that decompresses a gzip-compressed stream of data.

Parameters:

maxBytesPerChunk - Maximum length of an output pekko.util.ByteString chunk.

gunzip$default$1

public static int gunzip$default$1()

deflate

public static Flow<ByteString,ByteString,NotUsed> deflate()

Creates a flow that deflate-compresses a stream of ByteString. Note that the compressor will flush after every single element in stream so that it is guaranteed that every pekko.util.ByteString coming out of the flow can be fully decompressed without waiting for additional data. This may come at a compression performance cost for very small chunks.

deflate

public static Flow<ByteString,ByteString,NotUsed> deflate(int level,
                                                                      boolean nowrap)

Same as deflate() with configurable level and nowrap

Parameters:

level - Compression level (0-9)

nowrap - if true then use GZIP compatible compression

deflate

public static Flow<ByteString,ByteString,NotUsed> deflate(int level,
                                                                      boolean nowrap,
                                                                      boolean autoFlush)

Same as deflate() with configurable level, nowrap and autoFlush.

Parameters:

level - Compression level (0-9)

nowrap - if true then use GZIP compatible compression

autoFlush - If true will automatically flush after every single element in the stream.

Since:

1.3.0

inflate

public static Flow<ByteString,ByteString,NotUsed> inflate(int maxBytesPerChunk)

Creates a Flow that decompresses a deflate-compressed stream of data.

Parameters:

maxBytesPerChunk - Maximum length of an output pekko.util.ByteString chunk.

inflate

public static Flow<ByteString,ByteString,NotUsed> inflate(int maxBytesPerChunk,
                                                                      boolean nowrap)

Creates a Flow that decompresses a deflate-compressed stream of data.

Parameters:

maxBytesPerChunk - Maximum length of an output pekko.util.ByteString chunk.

nowrap - if true then use GZIP compatible decompression

inflate$default$1

public static int inflate$default$1()