Package org.apache.plc4x.java.s7.readwrite.connection

Class S7HMuxImpl

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

io.netty.handler.codec.MessageToMessageCodec<io.netty.buffer.ByteBuf,io.netty.buffer.ByteBuf>

org.apache.plc4x.java.s7.readwrite.connection.S7HMuxImpl

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler, io.netty.channel.ChannelOutboundHandler, S7HMux

@Sharable
public class S7HMuxImpl
extends io.netty.handler.codec.MessageToMessageCodec<io.netty.buffer.ByteBuf,io.netty.buffer.ByteBuf>
implements S7HMux

Implementation of a multiplexing channel, from an embedded channel to two possible TCP connections, primary and secondary. The objective is to allow connections to individual systems with a two CP (PN CPUs, CP343-1, CP443-1 or similar), or H-type systems (S7-400H or S7-1500H).

The user App must be in charge of restoring the requests or subscriptions that it is requesting.

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	Description
protected io.netty.channel.Channel	embeded_channel
static io.netty.util.AttributeKey<Boolean>	IS_CONNECTED
static io.netty.util.AttributeKey<Boolean>	IS_PING_ACTIVE
static io.netty.util.AttributeKey<Boolean>	IS_PRIMARY
static io.netty.util.AttributeKey<Integer>	PING_TIME
protected io.netty.channel.Channel	primary_channel
static io.netty.util.AttributeKey<Integer>	READ_TIME_OUT
static io.netty.util.AttributeKey<Integer>	RETRY_TIME
protected io.netty.channel.Channel	secondary_channel
protected io.netty.channel.Channel	tcp_channel

Constructor Summary

Constructors

Constructor	Description
S7HMuxImpl()

Method Summary

Modifier and Type	Method	Description
void	channelActive(io.netty.channel.ChannelHandlerContext ctx)
void	channelInactive(io.netty.channel.ChannelHandlerContext ctx)
void	channelReadComplete(io.netty.channel.ChannelHandlerContext ctx)
void	channelRegistered(io.netty.channel.ChannelHandlerContext ctx)
void	channelUnregistered(io.netty.channel.ChannelHandlerContext ctx)
void	channelWritabilityChanged(io.netty.channel.ChannelHandlerContext ctx)
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf inbb, List<Object> list)
protected void	encode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf outbb, List<Object> list)
void	exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause)
void	setEmbeddedChannel(io.netty.channel.Channel embeded_channel)
void	setPrimaryChannel(io.netty.channel.Channel primary_channel)
void	setSecondaryChannel(io.netty.channel.Channel secondary_channel)
void	userEventTriggered(io.netty.channel.ChannelHandlerContext ctx, Object evt)

Methods inherited from class io.netty.handler.codec.MessageToMessageCodec

acceptInboundMessage, acceptOutboundMessage, channelRead, write

Methods inherited from class io.netty.channel.ChannelDuplexHandler

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

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, 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

handlerAdded, handlerRemoved

Field Detail

IS_CONNECTED

public static final io.netty.util.AttributeKey<Boolean> IS_CONNECTED

IS_PRIMARY

public static final io.netty.util.AttributeKey<Boolean> IS_PRIMARY

READ_TIME_OUT

public static final io.netty.util.AttributeKey<Integer> READ_TIME_OUT

IS_PING_ACTIVE

public static final io.netty.util.AttributeKey<Boolean> IS_PING_ACTIVE

PING_TIME

public static final io.netty.util.AttributeKey<Integer> PING_TIME

RETRY_TIME

public static final io.netty.util.AttributeKey<Integer> RETRY_TIME

embeded_channel

protected io.netty.channel.Channel embeded_channel

tcp_channel

protected io.netty.channel.Channel tcp_channel

primary_channel

protected io.netty.channel.Channel primary_channel

secondary_channel

protected io.netty.channel.Channel secondary_channel

Constructor Detail

S7HMuxImpl

public S7HMuxImpl()

Method Detail

encode

protected void encode(io.netty.channel.ChannelHandlerContext ctx,
                      io.netty.buffer.ByteBuf outbb,
                      List<Object> list)
               throws Exception

Specified by:

encode in class io.netty.handler.codec.MessageToMessageCodec<io.netty.buffer.ByteBuf,io.netty.buffer.ByteBuf>

Throws:

Exception

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
                      io.netty.buffer.ByteBuf inbb,
                      List<Object> list)
               throws Exception

Specified by:

decode in class io.netty.handler.codec.MessageToMessageCodec<io.netty.buffer.ByteBuf,io.netty.buffer.ByteBuf>

Throws:

Exception

channelRegistered

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

Specified by:

channelRegistered in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRegistered in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

exceptionCaught

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

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

Throws:

Exception

channelWritabilityChanged

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

Specified by:

channelWritabilityChanged in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelWritabilityChanged in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

userEventTriggered

public void userEventTriggered(io.netty.channel.ChannelHandlerContext ctx,
                               Object evt)
                        throws Exception

Specified by:

userEventTriggered in interface io.netty.channel.ChannelInboundHandler

Overrides:

userEventTriggered in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

channelReadComplete

public void channelReadComplete(io.netty.channel.ChannelHandlerContext ctx)
                         throws Exception

Specified by:

channelReadComplete in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelReadComplete in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

channelInactive

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

Specified by:

channelInactive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelInactive in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

channelActive

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

Specified by:

channelActive in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelActive in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

channelUnregistered

public void channelUnregistered(io.netty.channel.ChannelHandlerContext ctx)
                         throws Exception

Specified by:

channelUnregistered in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelUnregistered in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

Exception

setEmbeddedChannel

public void setEmbeddedChannel(io.netty.channel.Channel embeded_channel)

Specified by:

setEmbeddedChannel in interface S7HMux

setPrimaryChannel

public void setPrimaryChannel(io.netty.channel.Channel primary_channel)

Specified by:

setPrimaryChannel in interface S7HMux

setSecondaryChannel

public void setSecondaryChannel(io.netty.channel.Channel secondary_channel)

Specified by:

setSecondaryChannel in interface S7HMux