Package com.linkedin.venice.router.streaming

Class VeniceChunkedWriteHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

com.linkedin.venice.router.streaming.NettyChunkedWriteHandler

com.linkedin.venice.router.streaming.VeniceChunkedWriteHandler

All Implemented Interfaces:

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

public class VeniceChunkedWriteHandler
extends NettyChunkedWriteHandler

This class is the wrapper of ChunkedWriteHandler, and essentially it will introduce the following logic: 1. Register the ChannelHandlerContext and VeniceChunkedWriteHandler in the request since those objects are not available to Venice directly when using DDS lib; 2. Intercept all the writes to delegate the pre-processing to VeniceChunkedResponse before proceeding;

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	VeniceChunkedWriteHandler.WriteMessageCallback

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

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field	Description
static io.netty.util.AttributeKey<io.netty.channel.ChannelHandlerContext>	CHANNEL_HANDLER_CONTEXT_ATTRIBUTE_KEY
static io.netty.util.AttributeKey<VeniceChunkedWriteHandler>	CHUNKED_WRITE_HANDLER_ATTRIBUTE_KEY

Constructor Summary

Constructors

Constructor	Description
VeniceChunkedWriteHandler()

Method Summary

Modifier and Type	Method	Description
void	channelRead(io.netty.channel.ChannelHandlerContext ctx, java.lang.Object msg)
void	setWriteMessageCallback(VeniceChunkedWriteHandler.WriteMessageCallback callback)
void	write(io.netty.channel.ChannelHandlerContext ctx, java.lang.Object msg, io.netty.channel.ChannelPromise promise)

Methods inherited from class com.linkedin.venice.router.streaming.NettyChunkedWriteHandler

channelInactive, channelWritabilityChanged, flush, handlerAdded, resumeTransfer

Methods inherited from class io.netty.channel.ChannelDuplexHandler

bind, close, connect, deregister, disconnect, read

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelReadComplete, channelRegistered, channelUnregistered, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerRemoved, 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

handlerRemoved

Field Detail

CHUNKED_WRITE_HANDLER_ATTRIBUTE_KEY

public static final io.netty.util.AttributeKey<VeniceChunkedWriteHandler> CHUNKED_WRITE_HANDLER_ATTRIBUTE_KEY

CHANNEL_HANDLER_CONTEXT_ATTRIBUTE_KEY

public static final io.netty.util.AttributeKey<io.netty.channel.ChannelHandlerContext> CHANNEL_HANDLER_CONTEXT_ATTRIBUTE_KEY

Constructor Detail

VeniceChunkedWriteHandler

public VeniceChunkedWriteHandler()

Method Detail

channelRead

public void channelRead(io.netty.channel.ChannelHandlerContext ctx,
                        java.lang.Object msg)
                 throws java.lang.Exception

Specified by:

channelRead in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

java.lang.Exception

setWriteMessageCallback

public void setWriteMessageCallback(VeniceChunkedWriteHandler.WriteMessageCallback callback)

write

public void write(io.netty.channel.ChannelHandlerContext ctx,
                  java.lang.Object msg,
                  io.netty.channel.ChannelPromise promise)

Specified by:

write in interface io.netty.channel.ChannelOutboundHandler

Overrides:

write in class NettyChunkedWriteHandler