reactor.netty

Interface Connection

All Superinterfaces:

Disposable, DisposableChannel

All Known Subinterfaces:

QuicConnection

All Known Implementing Classes:

ChannelOperations, HttpOperations

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Connection
extends DisposableChannel

Hold contextual information for the underlying Channel

Since:

0.8

Author:

Stephane Maldini

Nested Class Summary

Nested classes/interfaces inherited from interface reactor.core.Disposable

Disposable.Composite, Disposable.Swap

Method Summary

Modifier and Type	Method and Description
default Connection	addHandler(io.netty.channel.ChannelHandler handler) Deprecated. as of 1.0.17. Use addHandlerFirst(ChannelHandler) or addHandlerLast(ChannelHandler). This method will be removed in version 1.2.0.
default Connection	addHandler(String name, io.netty.channel.ChannelHandler handler) Deprecated. as of 1.0.17. Use addHandlerFirst(String, ChannelHandler) or addHandlerLast(String, ChannelHandler). This method will be removed in version 1.2.0.
default Connection	addHandlerFirst(io.netty.channel.ChannelHandler handler) Add a ChannelHandler to the beginning of the "user" ChannelPipeline, that is just after the reactor-added codecs.
default Connection	addHandlerFirst(String name, io.netty.channel.ChannelHandler handler) Add a ChannelHandler to the beginning of the "user" ChannelPipeline, that is just after the reactor-added codecs.
default Connection	addHandlerLast(io.netty.channel.ChannelHandler handler) Add a ChannelHandler to the end of the "user" ChannelPipeline, that is just before the reactor-added handlers like NettyPipeline.ReactiveBridge.
default Connection	addHandlerLast(String name, io.netty.channel.ChannelHandler handler) Add a ChannelHandler to the end of the "user" ChannelPipeline, that is just before the reactor-added handlers like NettyPipeline.ReactiveBridge.
default <T extends Connection> T	as(Class<T> clazz) Return an existing Connection that must match the given type wrapper or null.
default Connection	bind() Bind the Connection to the channel scope via an attribute.
static Connection	from(io.netty.channel.Channel channel) Return an existing Connection wrapper or create a simple new one
default NettyInbound	inbound() Return the NettyInbound read API from this connection.
default boolean	isPersistent() Return false if it will force a close on terminal protocol events thus defeating any pooling strategy Return true (default) if it will release on terminal protocol events thus keeping alive the channel if possible.
default Connection	markPersistent(boolean persist) Mark the underlying channel as persistent or not.
default Connection	onDispose(Disposable onDispose) Assigns a Disposable to be invoked when the channel is closed.
default Connection	onReadIdle(long idleTimeout, Runnable onReadIdle) Assign a Runnable to be invoked when reads have become idle for the given timeout.
default Mono<Void>	onTerminate() Return a Mono succeeding when a Connection is not used anymore by any current operations.
default Connection	onWriteIdle(long idleTimeout, Runnable onWriteIdle) Assign a Runnable to be invoked when writes have become idle for the given timeout.
default NettyOutbound	outbound() Return the NettyOutbound write API from this connection.
default boolean	rebind(Connection connection) Bind a new Connection reference or null to the channel attributes only if this instance is currently bound.
default Connection	removeHandler(String name) Remove a named handler if present and return this context
default Connection	replaceHandler(String name, io.netty.channel.ChannelHandler handler) Replace a named handler if present and return this context.

Methods inherited from interface reactor.netty.DisposableChannel

address, channel, dispose, disposeNow, disposeNow, disposeSubscriber, isDisposed, onDispose

Method Detail

from

static Connection from(io.netty.channel.Channel channel)

Return an existing Connection wrapper or create a simple new one

Parameters:

channel - channel to retrieve the connection reference from

Returns:

an existing Connection wrapper or create a simple new one

as

@Nullable
default <T extends Connection> T as(Class<T> clazz)

Return an existing Connection that must match the given type wrapper or null.

Parameters:

clazz - connection type to match to

Returns:

a matching Connection reference or null

addHandler

@Deprecated
default Connection addHandler(io.netty.channel.ChannelHandler handler)

Deprecated. as of 1.0.17. Use addHandlerFirst(ChannelHandler) or addHandlerLast(ChannelHandler). This method will be removed in version 1.2.0.

Add a ChannelHandler with addHandlerFirst(io.netty.channel.ChannelHandler) if of type of ChannelOutboundHandler otherwise with addHandlerLast(io.netty.channel.ChannelHandler). Implementation may add more auto handling in particular HTTP based context will prepend an HttpContent body extractor.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ]

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

handler - handler instance

Returns:

this Connection

addHandler

@Deprecated
default Connection addHandler(String name,
                                          io.netty.channel.ChannelHandler handler)

Deprecated. as of 1.0.17. Use addHandlerFirst(String, ChannelHandler) or addHandlerLast(String, ChannelHandler). This method will be removed in version 1.2.0.

Add a ChannelHandler with addHandlerFirst(io.netty.channel.ChannelHandler) if of type of ChannelOutboundHandler otherwise with addHandlerLast(io.netty.channel.ChannelHandler). Implementation may add more auto handling in particular HTTP based context will prepend an HttpContent body extractor.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ]

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

name - handler name

handler - handler instance

Returns:

this Connection

addHandlerLast

default Connection addHandlerLast(io.netty.channel.ChannelHandler handler)

Add a ChannelHandler to the end of the "user" ChannelPipeline, that is just before the reactor-added handlers like NettyPipeline.ReactiveBridge. If a handler with a similar name already exists, this operation is skipped.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ]

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

handler - handler instance

Returns:

this Connection

addHandlerLast

default Connection addHandlerLast(String name,
                                  io.netty.channel.ChannelHandler handler)

Add a ChannelHandler to the end of the "user" ChannelPipeline, that is just before the reactor-added handlers like NettyPipeline.ReactiveBridge. If a handler with a similar name already exists, this operation is skipped.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ]

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

name - handler name

handler - handler instance

Returns:

this Connection

addHandlerFirst

default Connection addHandlerFirst(io.netty.channel.ChannelHandler handler)

Add a ChannelHandler to the beginning of the "user" ChannelPipeline, that is just after the reactor-added codecs. If a handler with a similar name already exists, this operation is skipped.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ].

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

handler - handler instance

Returns:

this Connection

addHandlerFirst

default Connection addHandlerFirst(String name,
                                   io.netty.channel.ChannelHandler handler)

Add a ChannelHandler to the beginning of the "user" ChannelPipeline, that is just after the reactor-added codecs. If a handler with a similar name already exists, this operation is skipped.

[ [reactor codecs], [<- user FIRST HANDLERS added here, user LAST HANDLERS added here ->], [reactor handlers] ]

If effectively added, the handler will be safely removed when the channel is made inactive (pool release). As the Connection object is available once the channel is in active state, events prior this state will not be available (i.e. channelRegistered, initChannel, channelActive, etc.)

Parameters:

name - handler name

handler - handler instance

Returns:

this Connection

bind

default Connection bind()

Bind the Connection to the channel scope via an attribute. Can be retrieved later by from(io.netty.channel.Channel). If a previous reference Connection was bound, this instance will take precedence.

Returns:

this Connection.

inbound

default NettyInbound inbound()

Return the NettyInbound read API from this connection. If Connection has not been configured with a supporting bridge, receive operations will be unavailable.

Returns:

the NettyInbound read API from this connection.

isPersistent

default boolean isPersistent()

Return false if it will force a close on terminal protocol events thus defeating any pooling strategy Return true (default) if it will release on terminal protocol events thus keeping alive the channel if possible.

Returns:

whether the underlying Connection will be disposed on terminal handler event

markPersistent

default Connection markPersistent(boolean persist)

Mark the underlying channel as persistent or not. If false, it will force a close on terminal protocol events thus defeating any pooling strategy if true (default), it will release on terminal protocol events thus keeping alive the channel if possible.

Parameters:

persist - the boolean flag to mark the Channel as fully disposable or reusable when a user handler has terminated

Returns:

this Connection

onDispose

default Connection onDispose(Disposable onDispose)

Description copied from interface: DisposableChannel

Assigns a Disposable to be invoked when the channel is closed.

Specified by:

onDispose in interface DisposableChannel

Parameters:

onDispose - the close event handler

Returns:

this

onReadIdle

default Connection onReadIdle(long idleTimeout,
                              Runnable onReadIdle)

Assign a Runnable to be invoked when reads have become idle for the given timeout. This replaces any previously set idle callback.

Parameters:

idleTimeout - the idle timeout

onReadIdle - the idle timeout handler

Returns:

this

onTerminate

default Mono<Void> onTerminate()

Return a Mono succeeding when a Connection is not used anymore by any current operations. A typical example is when a pooled connection is released or an operations bridge has terminated.

Returns:

a Mono succeeding when a Connection has been terminated

onWriteIdle

default Connection onWriteIdle(long idleTimeout,
                               Runnable onWriteIdle)

Assign a Runnable to be invoked when writes have become idle for the given timeout. This replaces any previously set idle callback.

Parameters:

idleTimeout - the idle timeout

onWriteIdle - the idle timeout handler

Returns:

this

outbound

default NettyOutbound outbound()

Return the NettyOutbound write API from this connection. If Connection has not been configured with a supporting bridge, send operations will be unavailable.

Returns:

the NettyOutbound read API from this connection.

rebind

default boolean rebind(@Nullable
                       Connection connection)

Bind a new Connection reference or null to the channel attributes only if this instance is currently bound.

Parameters:

connection - a new connection reference

Returns:

true if bound

See Also:

bind()

removeHandler

default Connection removeHandler(String name)

Remove a named handler if present and return this context

Parameters:

name - handler name

Returns:

this Connection

replaceHandler

default Connection replaceHandler(String name,
                                  io.netty.channel.ChannelHandler handler)

Replace a named handler if present and return this context. If handler wasn't present, an RuntimeException will be thrown.

Note: if the new handler is of different type, dependent handling like the "extractor" introduced via HTTP-based addHandler(io.netty.channel.ChannelHandler) might not expect/support the new messages type.

Parameters:

name - handler name

Returns:

this Connection