eu.clarussecure.proxy.protocol.plugins.pgsql.message

Class PgsqlMessageHandler<T extends PgsqlMessage>

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<PgsqlRawMessage>

eu.clarussecure.proxy.protocol.plugins.pgsql.message.PgsqlMessageHandler<T>

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

Direct Known Subclasses:

AuthenticationRequestHandler, AuthenticationResponseHandler, QueryRequestHandler, QueryResponseHandler, SessionInitializationRequestHandler, SessionInitializationResponseHandler

public abstract class PgsqlMessageHandler<T extends PgsqlMessage>
extends io.netty.handler.codec.MessageToMessageDecoder<PgsqlRawMessage>

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 Map<Byte,Class<? extends T>>	msgTypes
protected int	numberOfPeerChannels
protected int	preferredPeerChannel

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PgsqlMessageHandler(Class<? extends T>... msgTypes)

Method Summary

Modifier and Type	Method and Description
boolean	acceptInboundMessage(Object msg)
protected io.netty.buffer.ByteBuf	allocate(io.netty.channel.ChannelHandlerContext ctx, T msg, io.netty.buffer.ByteBuf buffer)
void	channelRead(io.netty.channel.ChannelHandlerContext ctx, Object msg)
protected T	decode(io.netty.channel.ChannelHandlerContext ctx, byte type, io.netty.buffer.ByteBuf content)
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, PgsqlRawMessage rawMsg, List<Object> out)
protected void	decodeStream(io.netty.channel.ChannelHandlerContext ctx, byte type, MutableByteBufInputStream in)
protected void	decodeStream(io.netty.channel.ChannelHandlerContext ctx, PgsqlRawMessage rawMsg)
protected List<DirectedMessage<T>>	directedProcess(io.netty.channel.ChannelHandlerContext ctx, T msg)
protected io.netty.buffer.ByteBuf	encode(io.netty.channel.ChannelHandlerContext ctx, T msg)
protected io.netty.buffer.ByteBuf	encode(io.netty.channel.ChannelHandlerContext ctx, T msg, io.netty.buffer.ByteBuf buffer)
protected EventProcessor	getEventProcessor(io.netty.channel.ChannelHandlerContext ctx)
protected int	getNumberOfPeerChannels(io.netty.channel.ChannelHandlerContext ctx)
protected <M extends T> PgsqlMessageParser<M>	getParser(io.netty.channel.ChannelHandlerContext ctx, Class<? extends T> msgType)
protected PgsqlSession	getPgsqlSession(io.netty.channel.ChannelHandlerContext ctx)
protected int	getPreferredPeerChannel(io.netty.channel.ChannelHandlerContext ctx)
protected PgsqlConfiguration	getPsqlConfiguration(io.netty.channel.ChannelHandlerContext ctx)
protected SQLSession	getSqlSession(io.netty.channel.ChannelHandlerContext ctx)
protected <M extends PgsqlMessage> PgsqlMessageWriter<M>	getWriter(io.netty.channel.ChannelHandlerContext ctx, Class<? extends PgsqlMessage> msgType)
protected boolean	isStreamingSupported(byte type)
protected T	process(io.netty.channel.ChannelHandlerContext ctx, T msg)
protected void	sendErrorResponse(io.netty.channel.ChannelHandlerContext ctx, Map<Byte,CString> errorDetails)
protected <M extends PgsqlMessage> void	sendRequest(io.netty.channel.ChannelHandlerContext ctx, M msg, int backend)
protected <M extends PgsqlMessage> void	sendResponse(io.netty.channel.ChannelHandlerContext ctx, M msg)

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

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

msgTypes

protected final Map<Byte,Class<? extends T extends PgsqlMessage>> msgTypes

numberOfPeerChannels

protected int numberOfPeerChannels

preferredPeerChannel

protected int preferredPeerChannel

Constructor Detail

PgsqlMessageHandler

@SafeVarargs
protected PgsqlMessageHandler(Class<? extends T>... msgTypes)

Method Detail

acceptInboundMessage

public boolean acceptInboundMessage(Object msg)
                             throws Exception

Overrides:

acceptInboundMessage in class io.netty.handler.codec.MessageToMessageDecoder<PgsqlRawMessage>

Throws:

Exception

channelRead

public void channelRead(io.netty.channel.ChannelHandlerContext ctx,
                        Object msg)
                 throws Exception

Specified by:

channelRead in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class io.netty.handler.codec.MessageToMessageDecoder<PgsqlRawMessage>

Throws:

Exception

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
                      PgsqlRawMessage rawMsg,
                      List<Object> out)
               throws Exception

Specified by:

decode in class io.netty.handler.codec.MessageToMessageDecoder<PgsqlRawMessage>

Throws:

Exception

decodeStream

protected void decodeStream(io.netty.channel.ChannelHandlerContext ctx,
                            PgsqlRawMessage rawMsg)
                     throws IOException

Throws:

IOException

isStreamingSupported

protected boolean isStreamingSupported(byte type)

decodeStream

protected void decodeStream(io.netty.channel.ChannelHandlerContext ctx,
                            byte type,
                            MutableByteBufInputStream in)
                     throws IOException

Throws:

IOException

decode

protected T decode(io.netty.channel.ChannelHandlerContext ctx,
                   byte type,
                   io.netty.buffer.ByteBuf content)
            throws IOException

Throws:

IOException

directedProcess

protected List<DirectedMessage<T>> directedProcess(io.netty.channel.ChannelHandlerContext ctx,
                                                   T msg)
                                            throws IOException

Throws:

IOException

process

protected T process(io.netty.channel.ChannelHandlerContext ctx,
                    T msg)
             throws IOException

Throws:

IOException

allocate

protected io.netty.buffer.ByteBuf allocate(io.netty.channel.ChannelHandlerContext ctx,
                                           T msg,
                                           io.netty.buffer.ByteBuf buffer)

encode

protected io.netty.buffer.ByteBuf encode(io.netty.channel.ChannelHandlerContext ctx,
                                         T msg)
                                  throws IOException

Throws:

IOException

encode

protected io.netty.buffer.ByteBuf encode(io.netty.channel.ChannelHandlerContext ctx,
                                         T msg,
                                         io.netty.buffer.ByteBuf buffer)
                                  throws IOException

Throws:

IOException

getParser

protected <M extends T> PgsqlMessageParser<M> getParser(io.netty.channel.ChannelHandlerContext ctx,
                                                        Class<? extends T> msgType)

getWriter

protected <M extends PgsqlMessage> PgsqlMessageWriter<M> getWriter(io.netty.channel.ChannelHandlerContext ctx,
                                                                   Class<? extends PgsqlMessage> msgType)

getNumberOfPeerChannels

protected int getNumberOfPeerChannels(io.netty.channel.ChannelHandlerContext ctx)

getPreferredPeerChannel

protected int getPreferredPeerChannel(io.netty.channel.ChannelHandlerContext ctx)

getPsqlConfiguration

protected PgsqlConfiguration getPsqlConfiguration(io.netty.channel.ChannelHandlerContext ctx)

getPgsqlSession

protected PgsqlSession getPgsqlSession(io.netty.channel.ChannelHandlerContext ctx)

getSqlSession

protected SQLSession getSqlSession(io.netty.channel.ChannelHandlerContext ctx)

getEventProcessor

protected EventProcessor getEventProcessor(io.netty.channel.ChannelHandlerContext ctx)

sendErrorResponse

protected void sendErrorResponse(io.netty.channel.ChannelHandlerContext ctx,
                                 Map<Byte,CString> errorDetails)
                          throws IOException

Throws:

IOException

sendResponse

protected <M extends PgsqlMessage> void sendResponse(io.netty.channel.ChannelHandlerContext ctx,
                                                     M msg)
                                              throws IOException

Throws:

IOException

sendRequest

protected <M extends PgsqlMessage> void sendRequest(io.netty.channel.ChannelHandlerContext ctx,
                                                    M msg,
                                                    int backend)
                                             throws IOException

Throws:

IOException