org.apache.tinkerpop.gremlin.driver

Interface Channelizer

All Superinterfaces:

io.netty.channel.ChannelHandler

All Known Implementing Classes:

Channelizer.AbstractChannelizer, Channelizer.NioChannelizer, Channelizer.WebSocketChannelizer

public interface Channelizer
extends io.netty.channel.ChannelHandler

Client-side channel initializer interface. It is responsible for constructing the Netty ChannelPipeline used by the client to connect and send message to Gremlin Server.

Author:

Stephen Mallette (http://stephen.genoprime.com)

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Channelizer.AbstractChannelizer Base implementation of the client side Channelizer.
static class	Channelizer.NioChannelizer NIO Channelizer implementation.
static class	Channelizer.WebSocketChannelizer WebSocket Channelizer implementation.

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

io.netty.channel.ChannelHandler.Sharable

Method Summary

Modifier and Type	Method and Description
void	close(io.netty.channel.Channel channel) Called on Connection.close() to perform an Channelizer specific functions.
default void	connected() Called after the channel connects.
default Object	createKeepAliveMessage() Create a message for the driver to use as a "keep-alive" for the connection.
void	init(org.apache.tinkerpop.gremlin.driver.Connection connection) Initializes the Channelizer.
default boolean	supportsKeepAlive() Determines if the channelizer supports a method for keeping the connection to the server alive.

Methods inherited from interface io.netty.channel.ChannelHandler

exceptionCaught, handlerAdded, handlerRemoved

Method Detail

init

void init(org.apache.tinkerpop.gremlin.driver.Connection connection)

Initializes the Channelizer. Called just after construction.

close

void close(io.netty.channel.Channel channel)

Called on Connection.close() to perform an Channelizer specific functions. Note that the Connection already calls Channel.close() so there is no need to call that method here. An implementation will typically use this method to send a Channelizer specific message to the server to notify of shutdown coming from the client side (e.g. a "close" websocket frame).

createKeepAliveMessage

default Object createKeepAliveMessage()

Create a message for the driver to use as a "keep-alive" for the connection. This method will only be used if supportsKeepAlive() is true.

supportsKeepAlive

default boolean supportsKeepAlive()

Determines if the channelizer supports a method for keeping the connection to the server alive.

connected

default void connected()

Called after the channel connects. The Channelizer may need to perform some functions, such as a handshake.