Class ProtobufVarint32LengthFieldPrepender
java.lang.Object
org.jboss.netty.handler.codec.oneone.OneToOneEncoder
org.jboss.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender
- All Implemented Interfaces:
ChannelDownstreamHandler
,ChannelHandler
An encoder that prepends the the Google Protocol Buffers
Base
128 Varints integer length field. For example:
BEFORE DECODE (300 bytes) AFTER DECODE (302 bytes) +---------------+ +--------+---------------+ | Protobuf Data |-------------->| Length | Protobuf Data | | (300 bytes) | | 0xAC02 | (300 bytes) | +---------------+ +--------+---------------+*
- See Also:
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CodedOutputStream
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Nested Class Summary
Nested classes/interfaces inherited from interface org.jboss.netty.channel.ChannelHandler
ChannelHandler.Sharable
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected Object
encode
(ChannelHandlerContext ctx, Channel channel, Object msg) Transforms the specified message into another message and return the transformed message.Methods inherited from class org.jboss.netty.handler.codec.oneone.OneToOneEncoder
doEncode, handleDownstream
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Constructor Details
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ProtobufVarint32LengthFieldPrepender
public ProtobufVarint32LengthFieldPrepender()
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Method Details
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encode
Description copied from class:OneToOneEncoder
Transforms the specified message into another message and return the transformed message. Note that you can not returnnull
, unlike you can inOneToOneDecoder.decode(ChannelHandlerContext, Channel, Object)
; you must return something, at leastChannelBuffers.EMPTY_BUFFER
.- Specified by:
encode
in classOneToOneEncoder
- Throws:
Exception
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