Package org.apache.drill.exec.rpc

Class ProtobufLengthDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.ByteToMessageDecoder

org.apache.drill.exec.rpc.ProtobufLengthDecoder

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

Direct Known Subclasses:

ControlProtobufLengthDecoder, DataProtobufLengthDecoder.Client, DataProtobufLengthDecoder.Server, UserProtobufLengthDecoder

public class ProtobufLengthDecoder
extends io.netty.handler.codec.ByteToMessageDecoder

Modified version of ProtobufVarint32FrameDecoder that avoids bytebuf copy. See the documentation there.

Nested Class Summary

Nested classes/interfaces inherited from class io.netty.handler.codec.ByteToMessageDecoder

io.netty.handler.codec.ByteToMessageDecoder.Cumulator

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields inherited from class io.netty.handler.codec.ByteToMessageDecoder

COMPOSITE_CUMULATOR, MERGE_CUMULATOR

Constructor Summary

Constructors

Constructor	Description
ProtobufLengthDecoder(BufferAllocator allocator, OutOfMemoryHandler outOfMemoryHandler)

Method Summary

Modifier and Type	Method	Description
void	channelReadComplete(io.netty.channel.ChannelHandlerContext ctx)
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf in, List<Object> out)

Methods inherited from class io.netty.handler.codec.ByteToMessageDecoder

actualReadableBytes, callDecode, channelInactive, channelRead, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode, userEventTriggered

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, isSharable

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelHandler

handlerAdded

Constructor Details

ProtobufLengthDecoder

public ProtobufLengthDecoder(BufferAllocator allocator,
 OutOfMemoryHandler outOfMemoryHandler)

Method Details

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
 io.netty.buffer.ByteBuf in,
 List<Object> out)
               throws Exception

Specified by:

decode in class io.netty.handler.codec.ByteToMessageDecoder

Throws:

Exception

channelReadComplete

public void channelReadComplete(io.netty.channel.ChannelHandlerContext ctx)
                         throws Exception

Specified by:

channelReadComplete in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelReadComplete in class io.netty.handler.codec.ByteToMessageDecoder

Throws:

Exception