Package io.netty.contrib.handler.codec.protobuf

Class ProtobufVarint32LengthFieldPrepender

java.lang.Object

io.netty5.channel.ChannelHandlerAdapter

io.netty5.handler.codec.MessageToByteEncoder<io.netty5.buffer.Buffer>

io.netty.contrib.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender

All Implemented Interfaces:

io.netty5.channel.ChannelHandler

public class ProtobufVarint32LengthFieldPrepender
extends io.netty5.handler.codec.MessageToByteEncoder<io.netty5.buffer.Buffer>

An encoder that prepends the Google Protocol Buffers Base 128 Varints integer length field. For example:

 BEFORE ENCODE (300 bytes)       AFTER ENCODE (302 bytes)
 +---------------+               +--------+---------------+
 | Protobuf Data |-------------->| Length | Protobuf Data |
 |  (300 bytes)  |               | 0xAC02 |  (300 bytes)  |
 +---------------+               +--------+---------------+
 

See Also:

CodedOutputStream, CodedOutputByteBufferNano

Constructor Summary

Constructors

Constructor	Description
ProtobufVarint32LengthFieldPrepender()

Method Summary

Modifier and Type	Method	Description
protected io.netty5.buffer.Buffer	allocateBuffer(io.netty5.channel.ChannelHandlerContext ctx, io.netty5.buffer.Buffer buffer)
protected void	encode(io.netty5.channel.ChannelHandlerContext ctx, io.netty5.buffer.Buffer msg, io.netty5.buffer.Buffer out)
boolean	isSharable()

Methods inherited from class io.netty5.handler.codec.MessageToByteEncoder

acceptOutboundMessage, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty5.channel.ChannelHandler

bind, channelActive, channelExceptionCaught, channelInactive, channelInboundEvent, channelRead, channelReadComplete, channelRegistered, channelShutdown, channelUnregistered, channelWritabilityChanged, close, connect, deregister, disconnect, flush, handlerAdded, handlerRemoved, pendingOutboundBytes, read, register, sendOutboundEvent, shutdown

Constructor Detail

ProtobufVarint32LengthFieldPrepender

public ProtobufVarint32LengthFieldPrepender()

Method Detail

allocateBuffer

protected io.netty5.buffer.Buffer allocateBuffer(io.netty5.channel.ChannelHandlerContext ctx,
                                                 io.netty5.buffer.Buffer buffer)

Specified by:

allocateBuffer in class io.netty5.handler.codec.MessageToByteEncoder<io.netty5.buffer.Buffer>

encode

protected void encode(io.netty5.channel.ChannelHandlerContext ctx,
                      io.netty5.buffer.Buffer msg,
                      io.netty5.buffer.Buffer out)

Specified by:

encode in class io.netty5.handler.codec.MessageToByteEncoder<io.netty5.buffer.Buffer>

isSharable

public boolean isSharable()