io.micronaut.http.netty.reactive

Class HandlerSubscriber<T>

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.micronaut.http.netty.reactive.HandlerSubscriber<T>

Type Parameters:

T - The subscriber type

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler, io.netty.channel.ChannelOutboundHandler, Subscriber<T>

@Internal
public class HandlerSubscriber<T>
extends io.netty.channel.ChannelDuplexHandler
implements Subscriber<T>

Subscriber that publishes received messages to the handler pipeline.

Since:

1.0

Author:

Graeme Rocher

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
protected io.netty.channel.ChannelFuture	lastWriteFuture

Constructor Summary

Constructors

Constructor and Description
HandlerSubscriber(io.netty.util.concurrent.EventExecutor executor) Create a new handler subscriber with the default low and high watermarks.

Method Summary

Modifier and Type	Method and Description
void	channelActive(io.netty.channel.ChannelHandlerContext ctx)
void	channelInactive(io.netty.channel.ChannelHandlerContext ctx)
void	channelRegistered(io.netty.channel.ChannelHandlerContext ctx)
void	channelWritabilityChanged(io.netty.channel.ChannelHandlerContext ctx)
protected void	complete() Override for custom completion handling.
protected void	error(Throwable error) Override for custom error handling.
void	exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause)
void	handlerAdded(io.netty.channel.ChannelHandlerContext ctx)
void	handlerRemoved(io.netty.channel.ChannelHandlerContext ctx)
void	onComplete()
void	onError(Throwable error)
void	onNext(T t)
protected void	onNext(T t, io.netty.channel.ChannelPromise promise) Write the message with the supplied promise.
void	onSubscribe(Subscription subscription)

Methods inherited from class io.netty.channel.ChannelDuplexHandler

bind, close, connect, deregister, disconnect, flush, read, write

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelRead, channelReadComplete, channelUnregistered, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, isSharable

Methods inherited from class java.lang.Object

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

Field Detail

lastWriteFuture

protected io.netty.channel.ChannelFuture lastWriteFuture

Constructor Detail

HandlerSubscriber

public HandlerSubscriber(io.netty.util.concurrent.EventExecutor executor)

Create a new handler subscriber with the default low and high watermarks.

The supplied executor must be the same event loop as the event loop that this handler is eventually registered with, if not, an exception will be thrown when the handler is registered.

Parameters:

executor - The executor to execute asynchronous events from the publisher on.

Method Detail

error

protected void error(Throwable error)

Override for custom error handling. By default, it closes the channel.

Parameters:

error - The error to handle.

complete

protected void complete()

Override for custom completion handling. By default, it closes the channel.

handlerAdded

public void handlerAdded(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

handlerAdded in interface io.netty.channel.ChannelHandler

Overrides:

handlerAdded in class io.netty.channel.ChannelHandlerAdapter

channelRegistered

public void channelRegistered(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

channelRegistered in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRegistered in class io.netty.channel.ChannelInboundHandlerAdapter

channelWritabilityChanged

public void channelWritabilityChanged(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

channelWritabilityChanged in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelWritabilityChanged in class io.netty.channel.ChannelInboundHandlerAdapter

channelActive

public void channelActive(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

channelActive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelActive in class io.netty.channel.ChannelInboundHandlerAdapter

channelInactive

public void channelInactive(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

channelInactive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelInactive in class io.netty.channel.ChannelInboundHandlerAdapter

handlerRemoved

public void handlerRemoved(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

handlerRemoved in interface io.netty.channel.ChannelHandler

Overrides:

handlerRemoved in class io.netty.channel.ChannelHandlerAdapter

exceptionCaught

public void exceptionCaught(io.netty.channel.ChannelHandlerContext ctx,
                            Throwable cause)

Specified by:

exceptionCaught in interface io.netty.channel.ChannelHandler

Specified by:

exceptionCaught in interface io.netty.channel.ChannelInboundHandler

Overrides:

exceptionCaught in class io.netty.channel.ChannelInboundHandlerAdapter

onSubscribe

public void onSubscribe(Subscription subscription)

Specified by:

onSubscribe in interface Subscriber<T>

onNext

public void onNext(T t)

Specified by:

onNext in interface Subscriber<T>

onNext

protected void onNext(T t,
                      io.netty.channel.ChannelPromise promise)

Write the message with the supplied promise.

Parameters:

t - The message

promise - The promise

onError

public void onError(Throwable error)

Specified by:

onError in interface Subscriber<T>

onComplete

public void onComplete()

Specified by:

onComplete in interface Subscriber<T>