com.facebook.drift.transport.netty.codec

Class ZlibTransformer

java.lang.Object

com.facebook.drift.transport.netty.codec.ZlibTransformer

public class ZlibTransformer
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static ZlibTransformer	ZLIB_TRANSFORMER

Constructor Summary

Constructors

Constructor and Description
ZlibTransformer(int zipBlockSize)

Method Summary

Modifier and Type	Method and Description
io.netty.buffer.ByteBuf	transform(io.netty.buffer.ByteBufAllocator bufAllocator, io.netty.buffer.ByteBuf input) Encode raw input into encoded message.
io.netty.buffer.ByteBuf	tryUntransform(io.netty.buffer.ByteBufAllocator bufAllocator, io.netty.buffer.ByteBuf input, int byteLimit) Will try to un-transform until get at least minimumSize of byte of output or full output.
io.netty.buffer.ByteBuf	untransform(io.netty.buffer.ByteBufAllocator bufAllocator, io.netty.buffer.ByteBuf input) Decode encoded input into original message.

Methods inherited from class java.lang.Object

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

Field Detail

ZLIB_TRANSFORMER

public static final ZlibTransformer ZLIB_TRANSFORMER

Constructor Detail

ZlibTransformer

public ZlibTransformer(int zipBlockSize)

Method Detail

transform

public io.netty.buffer.ByteBuf transform(io.netty.buffer.ByteBufAllocator bufAllocator,
                                         io.netty.buffer.ByteBuf input)

Encode raw input into encoded message. Old input will be de-referenced. Throws RuntimeException when encode failed.

Parameters:

bufAllocator - allocator to allocate output byteBuf

input - raw byteBuf input

Returns:

encoded message

untransform

public io.netty.buffer.ByteBuf untransform(io.netty.buffer.ByteBufAllocator bufAllocator,
                                           io.netty.buffer.ByteBuf input)

Decode encoded input into original message. Old input will be de-referenced. Throws RuntimeException when decode failed.

Parameters:

bufAllocator - allocator to allocate output byteBuf

input - encoded input

Returns:

decoded message

tryUntransform

public io.netty.buffer.ByteBuf tryUntransform(io.netty.buffer.ByteBufAllocator bufAllocator,
                                              io.netty.buffer.ByteBuf input,
                                              int byteLimit)

Will try to un-transform until get at least minimumSize of byte of output or full output. Old input will be de-referenced.

Parameters:

bufAllocator - allocator to allocate output byteBuf

input - encoded input

byteLimit - try decode at least minimumSize of byte before stop.

Returns:

partially decoded message