Package org.apache.hugegraph.computer.core.network.netty

Class NettyProtocol

java.lang.Object

org.apache.hugegraph.computer.core.network.netty.NettyProtocol

public class NettyProtocol
extends java.lang.Object

Defines the server and client channel handlers, i.e. the protocol.

Field Summary

Fields

Modifier and Type	Field	Description
protected static java.lang.String	CLIENT_HANDLER_NAME
protected static java.lang.String	SERVER_HANDLER_NAME

Constructor Summary

Constructors

Constructor	Description
NettyProtocol(TransportConf conf)

Method Summary

Modifier and Type	Method	Description
protected void	initializeClientPipeline(io.netty.channel.Channel channel)	Initialize the client channel handlers.
protected void	initializeServerPipeline(io.netty.channel.Channel channel, MessageHandler handler)	Initialize the server channel handlers.
protected void	replaceClientHandler(io.netty.channel.Channel channel, NettyTransportClient client)

Methods inherited from class java.lang.Object

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

Field Detail

CLIENT_HANDLER_NAME

protected static final java.lang.String CLIENT_HANDLER_NAME

See Also:

Constant Field Values

SERVER_HANDLER_NAME

protected static final java.lang.String SERVER_HANDLER_NAME

See Also:

Constant Field Values

Constructor Detail

NettyProtocol

public NettyProtocol(TransportConf conf)

Method Detail

initializeServerPipeline

protected void initializeServerPipeline(io.netty.channel.Channel channel,
                                        MessageHandler handler)

Initialize the server channel handlers.

     +----------------------+
     | File / Local Buffer  |
     +-----------+----------+
                /|\ (2) zero-copy
 +---------------+---------------------------------------------------+
 |               |        SERVER CHANNEL PIPELINE                    |
 |               |                                                   |
 |    +----------+----------+ (3)write ack +----------------------+  |
 |    | ServerHandler       |------------->| MessageEncoder       |  |
 |    +----------+----------+              +-----------+----------+  |
 |              /|\                                 \|/              |
 |               |                                   |               |
 |    +----------+----------+                        |               |
 |    | MessageDecoder      |                        |               |
 |    +----------+----------+                        |               |
 |              /|\                                  |               |
 |               |                                   |               |
 |   +-----------+-----------+                       |               |
 |   | PreciseFrameDecoder   |                       |               |
 |   +-----------+-----------+                       |               |
 |              /|\                                  |               |
 +---------------+-----------------------------------+---------------+
 |               | (1) read request                 \|/              |
 +---------------+-----------------------------------+---------------+
 |               |                                   |               |
 |       [ Socket.read() ]                    [ Socket.write() ]     |
 |                                                                   |
 |  Netty Internal I/O Threads (Transport Implementation)            |
 +-------------------------------------------------------------------+
 

initializeClientPipeline

protected void initializeClientPipeline(io.netty.channel.Channel channel)

Initialize the client channel handlers.

                                         +----------------------+
                                         | request client       |
                                         +-----------+----------+
                                                     | (1) send message
 +-------------------------------------------------------------------+
 |                        CLIENT CHANNEL PIPELINE    |               |
 |                                                  \|/              |
 |    +---------------------+            +----------------------+    |
 |    | ClientHandler       |            | MessageEncoder       |    |
 |    +----------+----------+            +-----------+----------+    |
 |              /|\                                 \|/              |
 |               |                                   |               |
 |    +----------+----------+                        |               |
 |    | MessageDecoder      |                        |               |
 |    +----------+----------+                        |               |
 |              /|\                                  |               |
 |               |                                   |               |
 |   +-----------+-----------+                       |               |
 |   | FrameDecoder          |                       |               |
 |   +-----------+-----------+                       |               |
 |              /|\                                  |               |
 +---------------+-----------------------------------+---------------+
 |               | (3) server response              \|/ (2) client request
 +---------------+-----------------------------------+---------------+
 |               |                                   |               |
 |       [ Socket.read() ]                    [ Socket.write() ]     |
 |                                                                   |
 |  Netty Internal I/O Threads (Transport Implementation)            |
 +-------------------------------------------------------------------+
 

replaceClientHandler

protected void replaceClientHandler(io.netty.channel.Channel channel,
                                    NettyTransportClient client)