org.apache.hadoop.hbase.io.asyncfs

Class ProtobufDecoder

java.lang.Object

org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerAdapter

org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandlerAdapter

org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToMessageDecoder<org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf>

org.apache.hadoop.hbase.io.asyncfs.ProtobufDecoder

All Implemented Interfaces:

org.apache.hbase.thirdparty.io.netty.channel.ChannelHandler, org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandler

@InterfaceAudience.Private
public class ProtobufDecoder
extends org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToMessageDecoder<org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf>

Modified based on io.netty.handler.codec.protobuf.ProtobufDecoder. The Netty's ProtobufDecode supports unshaded protobuf messages (com.google.protobuf). Hadoop 3.3.0 and above relocates protobuf classes to a shaded jar (hadoop-thirdparty), and so we must use reflection to detect which one (relocated or not) to use. Do not use this to process HBase's shaded protobuf messages. This is meant to process the protobuf messages in HDFS for the asyncfs use case.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hbase.thirdparty.io.netty.channel.ChannelHandler

org.apache.hbase.thirdparty.io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
private Object	builder
private Method	buildMethod
private static Method	getParserForTypeMethod
private static boolean	HAS_PARSER
private static org.slf4j.Logger	LOG
private Method	mergeFromMethod
private static Method	newBuilderForTypeMethod
private Method	parseFromMethod
private Object	parser
private static Class<?>	protobufMessageLiteBuilderClass
private static Class<?>	protobufMessageLiteClass

Constructor Summary

Constructors

Constructor and Description
ProtobufDecoder(Object prototype)

Method Summary

Modifier and Type	Method and Description
protected void	decode(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx, org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf msg, List<Object> out)

Methods inherited from class org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToMessageDecoder

acceptInboundMessage, channelRead

Methods inherited from class org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandlerAdapter

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

Methods inherited from class org.apache.hbase.thirdparty.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 org.apache.hbase.thirdparty.io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

Field Detail

LOG

private static final org.slf4j.Logger LOG

protobufMessageLiteClass

private static Class<?> protobufMessageLiteClass

protobufMessageLiteBuilderClass

private static Class<?> protobufMessageLiteBuilderClass

HAS_PARSER

private static final boolean HAS_PARSER

getParserForTypeMethod

private static Method getParserForTypeMethod

newBuilderForTypeMethod

private static Method newBuilderForTypeMethod

parseFromMethod

private Method parseFromMethod

mergeFromMethod

private Method mergeFromMethod

buildMethod

private Method buildMethod

parser

private Object parser

builder

private Object builder

Constructor Detail

ProtobufDecoder

public ProtobufDecoder(Object prototype)

Method Detail

decode

protected void decode(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx,
                      org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf msg,
                      List<Object> out)
               throws Exception

Specified by:

decode in class org.apache.hbase.thirdparty.io.netty.handler.codec.MessageToMessageDecoder<org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf>

Throws:

Exception