com.alipay.remoting.codec

类 ProtocolCodeBasedDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

com.alipay.remoting.codec.AbstractBatchDecoder

com.alipay.remoting.codec.ProtocolCodeBasedDecoder

所有已实现的接口:

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

直接已知子类:

RpcProtocolDecoder

public class ProtocolCodeBasedDecoder
extends AbstractBatchDecoder

Protocol code based decoder, the main decoder for a certain protocol, which is lead by one or multi bytes (magic code). Notice: this is not stateless, can not be noted as ChannelHandler.Sharable

嵌套类概要

从类继承的嵌套类/接口 com.alipay.remoting.codec.AbstractBatchDecoder

AbstractBatchDecoder.Cumulator

从接口继承的嵌套类/接口 io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_ILLEGAL_PROTOCOL_VERSION_LENGTH protocol version should be a positive number, we use -1 to represent illegal
static int	DEFAULT_PROTOCOL_VERSION_LENGTH by default, suggest design a single byte for protocol version.
protected int	protocolCodeLength the length of protocol code

从类继承的字段 com.alipay.remoting.codec.AbstractBatchDecoder

COMPOSITE_CUMULATOR, MERGE_CUMULATOR

构造器概要

构造器

构造器和说明
ProtocolCodeBasedDecoder(int protocolCodeLength)

方法概要

方法

限定符和类型	方法和说明
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.buffer.ByteBuf in, List<Object> out) Decode the from one ByteBuf to an other.
protected ProtocolCode	decodeProtocolCode(io.netty.buffer.ByteBuf in) decode the protocol code
protected byte	decodeProtocolVersion(io.netty.buffer.ByteBuf in) decode the protocol version

从类继承的方法 com.alipay.remoting.codec.AbstractBatchDecoder

actualReadableBytes, callDecode, channelInactive, channelRead, channelReadComplete, decodeLast, discardSomeReadBytes, handlerRemoved, handlerRemoved0, internalBuffer, isSingleDecode, setCumulator, setDiscardAfterReads, setSingleDecode

从类继承的方法 io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

从类继承的方法 io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, isSharable

从类继承的方法 java.lang.Object

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

从接口继承的方法 io.netty.channel.ChannelHandler

handlerAdded

字段详细资料

DEFAULT_PROTOCOL_VERSION_LENGTH

public static final int DEFAULT_PROTOCOL_VERSION_LENGTH

by default, suggest design a single byte for protocol version.

另请参阅:

常量字段值

DEFAULT_ILLEGAL_PROTOCOL_VERSION_LENGTH

public static final int DEFAULT_ILLEGAL_PROTOCOL_VERSION_LENGTH

protocol version should be a positive number, we use -1 to represent illegal

另请参阅:

常量字段值

protocolCodeLength

protected int protocolCodeLength

the length of protocol code

构造器详细资料

ProtocolCodeBasedDecoder

public ProtocolCodeBasedDecoder(int protocolCodeLength)

方法详细资料

decodeProtocolCode

protected ProtocolCode decodeProtocolCode(io.netty.buffer.ByteBuf in)

decode the protocol code

参数:

in - input byte buf

返回:

an instance of ProtocolCode

decodeProtocolVersion

protected byte decodeProtocolVersion(io.netty.buffer.ByteBuf in)

decode the protocol version

参数:

in - input byte buf

返回:

a byte to represent protocol version

decode

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

从类复制的说明: AbstractBatchDecoder

Decode the from one ByteBuf to an other. This method will be called till either the input ByteBuf has nothing to read when return from this method or till nothing was read from the input ByteBuf.

指定者:

decode 在类中 AbstractBatchDecoder

参数:

ctx - the ChannelHandlerContext which this ByteToMessageDecoder belongs to

in - the ByteBuf from which to read data

out - the List to which decoded messages should be added

抛出:

Exception - is thrown if an error accour