2. 程式人生 > >Netty系列-使用Google Protobuf編解碼

Netty系列-使用Google Protobuf編解碼

阿新 • • 發佈：2019-01-22

什麼是編解碼

通常我們也習慣將編碼（Encode）稱為序列化（serialization），它將物件序列化為位元組陣列，用於網路傳輸、資料持久化或者其它用途。
反之，解碼（Decode）/反序列化（deserialization）把從網路、磁碟等讀取的位元組陣列還原成原始物件（通常是原始物件的拷貝），以方便後續的業務邏輯操作。
進行遠端跨程序服務呼叫時（例如RPC呼叫），需要使用特定的編解碼技術，對需要進行網路傳輸的物件做編碼或者解碼，以便完成遠端呼叫。

簡單介紹完了概念，那常用的編解碼工具有哪些呢？java序列化、Google的Protobuf、JBoss Marshalling等，Protobuf效率比較高，這裡介紹Protobuf的簡單入門用法。

例子演示的場景是：圖書訂購，客戶端傳送訂購圖書的請求，服務端都使用者名稱校驗後應答訊息返回客戶端。

1.首先下載protoc-2.5.0-win32

下載完成之後會看到protoc.exe

2.編寫資料檔案

package netty;
option java_package = "com.netty.codes.protobuf";
option java_outer_classname = "SubscribeReqProto";

message SubscribeReq{
	required int32 subReqID = 1;
	required string userName = 2;
	required string productName = 3;
	repeated string address = 4;
}

 

package netty;
option java_package = "com.netty.codes.protobuf";
option java_outer_classname = "SubscribeRespProto";

message SubscribeResp{
	required int32 subReqID = 1;
	required int32 respCode = 2;
	required string desc = 3;
}
命令列中執行生成java檔案 
E:\tools\protoc-2.5.0-win32>protoc.exe --java_out=./ SubscribeReq.proto

E:\tools\protoc-2.5.0-win32>protoc.exe --java_out=./ SubscribeResp.proto

3.在專案中引入pom依賴 
<dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>2.5.0</version>
        </dependency>

4.編寫server端 
package com.netty.subscribe;

import com.netty.codes.protobuf.SubscribeReqProto;
import com.netty.codes.protobuf.SubscribeRespProto;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.protobuf.ProtobufDecoder;
import io.netty.handler.codec.protobuf.ProtobufEncoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;


/**
 * Created by lcq on 12/12/2016.
 */
public class SubReqServer {


    public static void main(String[] args) throws InterruptedException {
        int port = 8080;
        new SubReqServer().bind(port);
    }

    private void bind(int port) throws InterruptedException {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 100)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel sc) throws Exception {
                            sc.pipeline().addLast(new ProtobufVarint32FrameDecoder());
                            sc.pipeline().addLast(new ProtobufDecoder(SubscribeReqProto.SubscribeReq.getDefaultInstance()));
                            sc.pipeline().addLast(new ProtobufVarint32LengthFieldPrepender());
                            sc.pipeline().addLast(new ProtobufEncoder());
                            sc.pipeline().addLast(new SubReqServerHandler());
                        }
                    });
            ChannelFuture f = b.bind(port).sync();
            f.channel().closeFuture().sync();
        }finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    private class SubReqServerHandler extends ChannelHandlerAdapter {
        @Override
        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
            SubscribeReqProto.SubscribeReq req = (SubscribeReqProto.SubscribeReq) msg;
            if("lcq".equalsIgnoreCase(req.getUserName())){
                System.out.println("service accept client subscribe req : [" + req.toString() + "]");
                ctx.writeAndFlush(resp(req.getSubReqID()));
            }
        }

        private SubscribeRespProto.SubscribeResp resp(int subReqID) {
            SubscribeRespProto.SubscribeResp.Builder builder = SubscribeRespProto.SubscribeResp.newBuilder();
            builder.setSubReqID(subReqID);
            builder.setRespCode(0);
            builder.setDesc("netty book order succeed,3 days later sent to the designated address");
            return builder.build();
        }

        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
            ctx.close();
        }
    }
}
客戶端程式碼 
package com.netty.subscribe;

import com.netty.codes.protobuf.SubscribeReqProto;
import com.netty.codes.protobuf.SubscribeRespProto;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.protobuf.ProtobufDecoder;
import io.netty.handler.codec.protobuf.ProtobufEncoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by lcq on 12/12/2016.
 */
public class SubReqClient {
    public static void main(String[] args) throws InterruptedException {
        int port = 8080;
        new SubReqClient().connect(port,"127.0.0.1");
    }

    private void connect(int port, String host) throws InterruptedException {
        EventLoopGroup group = new NioEventLoopGroup();

        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel sc) throws Exception {
                            sc.pipeline().addLast(new ProtobufVarint32FrameDecoder());
                            sc.pipeline().addLast(new ProtobufDecoder(SubscribeRespProto.SubscribeResp.getDefaultInstance()));
                            sc.pipeline().addLast(new ProtobufVarint32LengthFieldPrepender());
                            sc.pipeline().addLast(new ProtobufEncoder());
                            sc.pipeline().addLast(new SubReqClientHandler());
                        }
                    });
            ChannelFuture f = b.connect(host, port).sync();
            f.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully();
        }

    }

    private class SubReqClientHandler extends ChannelHandlerAdapter {
        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            for (int i = 0;i < 10;i++){
                ctx.write(subReq(i));
            }
            ctx.flush();
        }

        private SubscribeReqProto.SubscribeReq subReq(int i) {
            SubscribeReqProto.SubscribeReq.Builder builder = SubscribeReqProto.SubscribeReq.newBuilder();
            builder.setSubReqID(i);
            builder.setUserName("lcq");
            builder.setProductName("netty book for protobuf");
            List<String> address = new ArrayList<String>();
            address.add("beijing");
            address.add("qingdao");
            builder.addAllAddress(address);
            return builder.build();
        }

        @Override
        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
            System.out.println("receive server resp : [" + msg + "]");
        }

        @Override
        public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
            ctx.flush();
        }

        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
            ctx.close();
        }
    }
}

啟動服務端然後執行客戶端後可以看到輸出：

server輸出

service accept client subscribe req : [subReqID: 0
userName: "lcq"
productName: "netty book for protobuf"
address: "beijing"
address: "qingdao"
]
service accept client subscribe req : [subReqID: 1
userName: "lcq"
productName: "netty book for protobuf"
address: "beijing"
address: "qingdao"
]
service accept client subscribe req : [subReqID: 2
userName: "lcq"
productName: "netty book for protobuf"
address: "beijing"
address: "qingdao"
]
...
service accept client subscribe req : [subReqID: 8
userName: "lcq"
productName: "netty book for protobuf"
address: "beijing"
address: "qingdao"
]
service accept client subscribe req : [subReqID: 9
userName: "lcq"
productName: "netty book for protobuf"
address: "beijing"
address: "qingdao"
]

cilent端 
receive server resp : [subReqID: 0
respCode: 0
desc: "netty book order succeed,3 days later sent to the designated address"
]
receive server resp : [subReqID: 1
respCode: 0
desc: "netty book order succeed,3 days later sent to the designated address"
]
...
receive server resp : [subReqID: 8
respCode: 0
desc: "netty book order succeed,3 days later sent to the designated address"
]
receive server resp : [subReqID: 9
respCode: 0
desc: "netty book order succeed,3 days later sent to the designated address"
]
重點看編解碼的程式碼，在server端可以看到ProtobufDecoder傳入的引數是SubscribeReqProto.SubscribeReq.getDefaultInstance()，而在client中是new ProtobufDecoder(SubscribeRespProto.SubscribeResp.getDefaultInstance())，是相互對應的。
關於解碼器和編碼器以及業務處理器的呼叫順序可以參考下圖


從網路讀取的inbound訊息，需要經過解碼，將二進位制的資料報轉換成應用層協議訊息或者業務訊息，才能夠被上層的應用邏輯識別和處理；同理，使用者傳送到網路的outbound業務訊息，需要經過編碼轉換成二進位制位元組陣列（對於Netty就是ByteBuf）才能夠傳送到網路對端。編碼和解碼功能是NIO框架的有機組成部分，無論是由業務定製擴充套件實現，還是NIO框架內建編解碼能力，該功能是必不可少的。

這一部分是看到網上其他作者的分析，具體Netty底層實現還是需要看原始碼。

參考文章：

http://www.infoq.com/cn/articles/netty-codec-framework-analyse/ 點選開啟連結


同時附上生成兩個檔案程式碼

SubscribeReqProto.java檔案

// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: SubscribeReq.proto

package com.netty.codes.protobuf;

public final class SubscribeReqProto {
  private SubscribeReqProto() {}
  public static void registerAllExtensions(
      com.google.protobuf.ExtensionRegistry registry) {
  }
  public interface SubscribeReqOrBuilder
      extends com.google.protobuf.MessageOrBuilder {

    // required int32 subReqID = 1;
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    boolean hasSubReqID();
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    int getSubReqID();

    // required string userName = 2;
    /**
     * <code>required string userName = 2;</code>
     */
    boolean hasUserName();
    /**
     * <code>required string userName = 2;</code>
     */
    String getUserName();
    /**
     * <code>required string userName = 2;</code>
     */
    com.google.protobuf.ByteString
        getUserNameBytes();

    // required string productName = 3;
    /**
     * <code>required string productName = 3;</code>
     */
    boolean hasProductName();
    /**
     * <code>required string productName = 3;</code>
     */
    String getProductName();
    /**
     * <code>required string productName = 3;</code>
     */
    com.google.protobuf.ByteString
        getProductNameBytes();

    // repeated string address = 4;
    /**
     * <code>repeated string address = 4;</code>
     */
    java.util.List<String>
    getAddressList();
    /**
     * <code>repeated string address = 4;</code>
     */
    int getAddressCount();
    /**
     * <code>repeated string address = 4;</code>
     */
    String getAddress(int index);
    /**
     * <code>repeated string address = 4;</code>
     */
    com.google.protobuf.ByteString
        getAddressBytes(int index);
  }
  /**
   * Protobuf type {@code netty.SubscribeReq}
   */
  public static final class SubscribeReq extends
      com.google.protobuf.GeneratedMessage
      implements SubscribeReqOrBuilder {
    // Use SubscribeReq.newBuilder() to construct.
    private SubscribeReq(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
      super(builder);
      this.unknownFields = builder.getUnknownFields();
    }
    private SubscribeReq(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }

    private static final SubscribeReq defaultInstance;
    public static SubscribeReq getDefaultInstance() {
      return defaultInstance;
    }

    public SubscribeReq getDefaultInstanceForType() {
      return defaultInstance;
    }

    private final com.google.protobuf.UnknownFieldSet unknownFields;
    @Override
    public final com.google.protobuf.UnknownFieldSet
        getUnknownFields() {
      return this.unknownFields;
    }
    private SubscribeReq(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      initFields();
      int mutable_bitField0_ = 0;
      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
          com.google.protobuf.UnknownFieldSet.newBuilder();
      try {
        boolean done = false;
        while (!done) {
          int tag = input.readTag();
          switch (tag) {
            case 0:
              done = true;
              break;
            default: {
              if (!parseUnknownField(input, unknownFields,
                                     extensionRegistry, tag)) {
                done = true;
              }
              break;
            }
            case 8: {
              bitField0_ |= 0x00000001;
              subReqID_ = input.readInt32();
              break;
            }
            case 18: {
              bitField0_ |= 0x00000002;
              userName_ = input.readBytes();
              break;
            }
            case 26: {
              bitField0_ |= 0x00000004;
              productName_ = input.readBytes();
              break;
            }
            case 34: {
              if (!((mutable_bitField0_ & 0x00000008) == 0x00000008)) {
                address_ = new com.google.protobuf.LazyStringArrayList();
                mutable_bitField0_ |= 0x00000008;
              }
              address_.add(input.readBytes());
              break;
            }
          }
        }
      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
        throw e.setUnfinishedMessage(this);
      } catch (java.io.IOException e) {
        throw new com.google.protobuf.InvalidProtocolBufferException(
            e.getMessage()).setUnfinishedMessage(this);
      } finally {
        if (((mutable_bitField0_ & 0x00000008) == 0x00000008)) {
          address_ = new com.google.protobuf.UnmodifiableLazyStringList(address_);
        }
        this.unknownFields = unknownFields.build();
        makeExtensionsImmutable();
      }
    }
    public static final com.google.protobuf.Descriptors.Descriptor
        getDescriptor() {
      return SubscribeReqProto.internal_static_netty_SubscribeReq_descriptor;
    }

    protected FieldAccessorTable
        internalGetFieldAccessorTable() {
      return SubscribeReqProto.internal_static_netty_SubscribeReq_fieldAccessorTable
          .ensureFieldAccessorsInitialized(
              SubscribeReq.class, Builder.class);
    }

    public static com.google.protobuf.Parser<SubscribeReq> PARSER =
        new com.google.protobuf.AbstractParser<SubscribeReq>() {
      public SubscribeReq parsePartialFrom(
          com.google.protobuf.CodedInputStream input,
          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
          throws com.google.protobuf.InvalidProtocolBufferException {
        return new SubscribeReq(input, extensionRegistry);
      }
    };

    @Override
    public com.google.protobuf.Parser<SubscribeReq> getParserForType() {
      return PARSER;
    }

    private int bitField0_;
    // required int32 subReqID = 1;
    public static final int SUBREQID_FIELD_NUMBER = 1;
    private int subReqID_;
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    public boolean hasSubReqID() {
      return ((bitField0_ & 0x00000001) == 0x00000001);
    }
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    public int getSubReqID() {
      return subReqID_;
    }

    // required string userName = 2;
    public static final int USERNAME_FIELD_NUMBER = 2;
    private Object userName_;
    /**
     * <code>required string userName = 2;</code>
     */
    public boolean hasUserName() {
      return ((bitField0_ & 0x00000002) == 0x00000002);
    }
    /**
     * <code>required string userName = 2;</code>
     */
    public String getUserName() {
      Object ref = userName_;
      if (ref instanceof String) {
        return (String) ref;
      } else {
        com.google.protobuf.ByteString bs = 
            (com.google.protobuf.ByteString) ref;
        String s = bs.toStringUtf8();
        if (bs.isValidUtf8()) {
          userName_ = s;
        }
        return s;
      }
    }
    /**
     * <code>required string userName = 2;</code>
     */
    public com.google.protobuf.ByteString
        getUserNameBytes() {
      Object ref = userName_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b = 
            com.google.protobuf.ByteString.copyFromUtf8(
                (String) ref);
        userName_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    // required string productName = 3;
    public static final int PRODUCTNAME_FIELD_NUMBER = 3;
    private Object productName_;
    /**
     * <code>required string productName = 3;</code>
     */
    public boolean hasProductName() {
      return ((bitField0_ & 0x00000004) == 0x00000004);
    }
    /**
     * <code>required string productName = 3;</code>
     */
    public String getProductName() {
      Object ref = productName_;
      if (ref instanceof String) {
        return (String) ref;
      } else {
        com.google.protobuf.ByteString bs = 
            (com.google.protobuf.ByteString) ref;
        String s = bs.toStringUtf8();
        if (bs.isValidUtf8()) {
          productName_ = s;
        }
        return s;
      }
    }
    /**
     * <code>required string productName = 3;</code>
     */
    public com.google.protobuf.ByteString
        getProductNameBytes() {
      Object ref = productName_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b = 
            com.google.protobuf.ByteString.copyFromUtf8(
                (String) ref);
        productName_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    // repeated string address = 4;
    public static final int ADDRESS_FIELD_NUMBER = 4;
    private com.google.protobuf.LazyStringList address_;
    /**
     * <code>repeated string address = 4;</code>
     */
    public java.util.List<String>
        getAddressList() {
      return address_;
    }
    /**
     * <code>repeated string address = 4;</code>
     */
    public int getAddressCount() {
      return address_.size();
    }
    /**
     * <code>repeated string address = 4;</code>
     */
    public String getAddress(int index) {
      return address_.get(index);
    }
    /**
     * <code>repeated string address = 4;</code>
     */
    public com.google.protobuf.ByteString
        getAddressBytes(int index) {
      return address_.getByteString(index);
    }

    private void initFields() {
      subReqID_ = 0;
      userName_ = "";
      productName_ = "";
      address_ = com.google.protobuf.LazyStringArrayList.EMPTY;
    }
    private byte memoizedIsInitialized = -1;
    public final boolean isInitialized() {
      byte isInitialized = memoizedIsInitialized;
      if (isInitialized != -1) return isInitialized == 1;

      if (!hasSubReqID()) {
        memoizedIsInitialized = 0;
        return false;
      }
      if (!hasUserName()) {
        memoizedIsInitialized = 0;
        return false;
      }
      if (!hasProductName()) {
        memoizedIsInitialized = 0;
        return false;
      }
      memoizedIsInitialized = 1;
      return true;
    }

    public void writeTo(com.google.protobuf.CodedOutputStream output)
                        throws java.io.IOException {
      getSerializedSize();
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        output.writeInt32(1, subReqID_);
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        output.writeBytes(2, getUserNameBytes());
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        output.writeBytes(3, getProductNameBytes());
      }
      for (int i = 0; i < address_.size(); i++) {
        output.writeBytes(4, address_.getByteString(i));
      }
      getUnknownFields().writeTo(output);
    }

    private int memoizedSerializedSize = -1;
    public int getSerializedSize() {
      int size = memoizedSerializedSize;
      if (size != -1) return size;

      size = 0;
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        size += com.google.protobuf.CodedOutputStream
          .computeInt32Size(1, subReqID_);
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBytesSize(2, getUserNameBytes());
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBytesSize(3, getProductNameBytes());
      }
      {
        int dataSize = 0;
        for (int i = 0; i < address_.size(); i++) {
          dataSize += com.google.protobuf.CodedOutputStream
            .computeBytesSizeNoTag(address_.getByteString(i));
        }
        size += dataSize;
        size += 1 * getAddressList().size();
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSerializedSize = size;
      return size;
    }

    private static final long serialVersionUID = 0L;
    @Override
    protected Object writeReplace()
        throws java.io.ObjectStreamException {
      return super.writeReplace();
    }

    public static SubscribeReq parseFrom(
        com.google.protobuf.ByteString data)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static SubscribeReq parseFrom(
        com.google.protobuf.ByteString data,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static SubscribeReq parseFrom(byte[] data)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static SubscribeReq parseFrom(
        byte[] data,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static SubscribeReq parseFrom(java.io.InputStream input)
        throws java.io.IOException {
      return PARSER.parseFrom(input);
    }
    public static SubscribeReq parseFrom(
        java.io.InputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseFrom(input, extensionRegistry);
    }
    public static SubscribeReq parseDelimitedFrom(java.io.InputStream input)
        throws java.io.IOException {
      return PARSER.parseDelimitedFrom(input);
    }
    public static SubscribeReq parseDelimitedFrom(
        java.io.InputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseDelimitedFrom(input, extensionRegistry);
    }
    public static SubscribeReq parseFrom(
        com.google.protobuf.CodedInputStream input)
        throws java.io.IOException {
      return PARSER.parseFrom(input);
    }
    public static SubscribeReq parseFrom(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseFrom(input, extensionRegistry);
    }

    public static Builder newBuilder() { return Builder.create(); }
    public Builder newBuilderForType() { return newBuilder(); }
    public static Builder newBuilder(SubscribeReq prototype) {
      return newBuilder().mergeFrom(prototype);
    }
    public Builder toBuilder() { return newBuilder(this); }

    @Override
    protected Builder newBuilderForType(
        BuilderParent parent) {
      Builder builder = new Builder(parent);
      return builder;
    }
    /**
     * Protobuf type {@code netty.SubscribeReq}
     */
    public static final class Builder extends
        com.google.protobuf.GeneratedMessage.Builder<Builder>
       implements SubscribeReqOrBuilder {
      public static final com.google.protobuf.Descriptors.Descriptor
          getDescriptor() {
        return SubscribeReqProto.internal_static_netty_SubscribeReq_descriptor;
      }

      protected FieldAccessorTable
          internalGetFieldAccessorTable() {
        return SubscribeReqProto.internal_static_netty_SubscribeReq_fieldAccessorTable
            .ensureFieldAccessorsInitialized(
                SubscribeReq.class, Builder.class);
      }

      // Construct using com.netty.codes.protobuf.SubscribeReqProto.SubscribeReq.newBuilder()
      private Builder() {
        maybeForceBuilderInitialization();
      }

      private Builder(
          BuilderParent parent) {
        super(parent);
        maybeForceBuilderInitialization();
      }
      private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
        }
      }
      private static Builder create() {
        return new Builder();
      }

      public Builder clear() {
        super.clear();
        subReqID_ = 0;
        bitField0_ = (bitField0_ & ~0x00000001);
        userName_ = "";
        bitField0_ = (bitField0_ & ~0x00000002);
        productName_ = "";
        bitField0_ = (bitField0_ & ~0x00000004);
        address_ = com.google.protobuf.LazyStringArrayList.EMPTY;
        bitField0_ = (bitField0_ & ~0x00000008);
        return this;
      }

      public Builder clone() {
        return create().mergeFrom(buildPartial());
      }

      public com.google.protobuf.Descriptors.Descriptor
          getDescriptorForType() {
        return SubscribeReqProto.internal_static_netty_SubscribeReq_descriptor;
      }

      public SubscribeReq getDefaultInstanceForType() {
        return SubscribeReq.getDefaultInstance();
      }

      public SubscribeReq build() {
        SubscribeReq result = buildPartial();
        if (!result.isInitialized()) {
          throw newUninitializedMessageException(result);
        }
        return result;
      }

      public SubscribeReq buildPartial() {
        SubscribeReq result = new SubscribeReq(this);
        int from_bitField0_ = bitField0_;
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
          to_bitField0_ |= 0x00000001;
        }
        result.subReqID_ = subReqID_;
        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
          to_bitField0_ |= 0x00000002;
        }
        result.userName_ = userName_;
        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
          to_bitField0_ |= 0x00000004;
        }
        result.productName_ = productName_;
        if (((bitField0_ & 0x00000008) == 0x00000008)) {
          address_ = new com.google.protobuf.UnmodifiableLazyStringList(
              address_);
          bitField0_ = (bitField0_ & ~0x00000008);
        }
        result.address_ = address_;
        result.bitField0_ = to_bitField0_;
        onBuilt();
        return result;
      }

      public Builder mergeFrom(com.google.protobuf.Message other) {
        if (other instanceof SubscribeReq) {
          return mergeFrom((SubscribeReq)other);
        } else {
          super.mergeFrom(other);
          return this;
        }
      }

      public Builder mergeFrom(SubscribeReq other) {
        if (other == SubscribeReq.getDefaultInstance()) return this;
        if (other.hasSubReqID()) {
          setSubReqID(other.getSubReqID());
        }
        if (other.hasUserName()) {
          bitField0_ |= 0x00000002;
          userName_ = other.userName_;
          onChanged();
        }
        if (other.hasProductName()) {
          bitField0_ |= 0x00000004;
          productName_ = other.productName_;
          onChanged();
        }
        if (!other.address_.isEmpty()) {
          if (address_.isEmpty()) {
            address_ = other.address_;
            bitField0_ = (bitField0_ & ~0x00000008);
          } else {
            ensureAddressIsMutable();
            address_.addAll(other.address_);
          }
          onChanged();
        }
        this.mergeUnknownFields(other.getUnknownFields());
        return this;
      }

      public final boolean isInitialized() {
        if (!hasSubReqID()) {
          
          return false;
        }
        if (!hasUserName()) {
          
          return false;
        }
        if (!hasProductName()) {
          
          return false;
        }
        return true;
      }

      public Builder mergeFrom(
          com.google.protobuf.CodedInputStream input,
          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
          throws java.io.IOException {
        SubscribeReq parsedMessage = null;
        try {
          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
          parsedMessage = (SubscribeReq) e.getUnfinishedMessage();
          throw e;
        } finally {
          if (parsedMessage != null) {
            mergeFrom(parsedMessage);
          }
        }
        return this;
      }
      private int bitField0_;

      // required int32 subReqID = 1;
      private int subReqID_ ;
      /**
       * <code>required int32 subReqID = 1;</code>
       */
      public boolean hasSubReqID() {
        return ((bitField0_ & 0x00000001) == 0x00000001);
      }
      /**
       * <code>required int32 subReqID = 1;</code>
       */
      public int getSubReqID() {
        return subReqID_;
      }
      /**
       * <code>required int32 subReqID = 1;</code>
       */
      public Builder setSubReqID(int value) {
        bitField0_ |= 0x00000001;
        subReqID_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>required int32 subReqID = 1;</code>
       */
      public Builder clearSubReqID() {
        bitField0_ = (bitField0_ & ~0x00000001);
        subReqID_ = 0;
        onChanged();
        return this;
      }

      // required string userName = 2;
      private Object userName_ = "";
      /**
       * <code>required string userName = 2;</code>
       */
      public boolean hasUserName() {
        return ((bitField0_ & 0x00000002) == 0x00000002);
      }
      /**
       * <code>required string userName = 2;</code>
       */
      public String getUserName() {
        Object ref = userName_;
        if (!(ref instanceof String)) {
          String s = ((com.google.protobuf.ByteString) ref)
              .toStringUtf8();
          userName_ = s;
          return s;
        } else {
          return (String) ref;
        }
      }
      /**
       * <code>required string userName = 2;</code>
       */
      public com.google.protobuf.ByteString
          getUserNameBytes() {
        Object ref = userName_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b = 
              com.google.protobuf.ByteString.copyFromUtf8(
                  (String) ref);
          userName_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
      /**
       * <code>required string userName = 2;</code>
       */
      public Builder setUserName(
          String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  bitField0_ |= 0x00000002;
        userName_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>required string userName = 2;</code>
       */
      public Builder clearUserName() {
        bitField0_ = (bitField0_ & ~0x00000002);
        userName_ = getDefaultInstance().getUserName();
        onChanged();
        return this;
      }
      /**
       * <code>required string userName = 2;</code>
       */
      public Builder setUserNameBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) {
    throw new NullPointerException();
  }
  bitField0_ |= 0x00000002;
        userName_ = value;
        onChanged();
        return this;
      }

      // required string productName = 3;
      private Object productName_ = "";
      /**
       * <code>required string productName = 3;</code>
       */
      public boolean hasProductName() {
        return ((bitField0_ & 0x00000004) == 0x00000004);
      }
      /**
       * <code>required string productName = 3;</code>
       */
      public String getProductName() {
        Object ref = productName_;
        if (!(ref instanceof String)) {
          String s = ((com.google.protobuf.ByteString) ref)
              .toStringUtf8();
          productName_ = s;
          return s;
        } else {
          return (String) ref;
        }
      }
      /**
       * <code>required string productName = 3;</code>
       */
      public com.google.protobuf.ByteString
          getProductNameBytes() {
        Object ref = productName_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b = 
              com.google.protobuf.ByteString.copyFromUtf8(
                  (String) ref);
          productName_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
      /**
       * <code>required string productName = 3;</code>
       */
      public Builder setProductName(
          String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  bitField0_ |= 0x00000004;
        productName_ = value;
        onChanged();
        return this;
      }
      /**
       * <code>required string productName = 3;</code>
       */
      public Builder clearProductName() {
        bitField0_ = (bitField0_ & ~0x00000004);
        productName_ = getDefaultInstance().getProductName();
        onChanged();
        return this;
      }
      /**
       * <code>required string productName = 3;</code>
       */
      public Builder setProductNameBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) {
    throw new NullPointerException();
  }
  bitField0_ |= 0x00000004;
        productName_ = value;
        onChanged();
        return this;
      }

      // repeated string address = 4;
      private com.google.protobuf.LazyStringList address_ = com.google.protobuf.LazyStringArrayList.EMPTY;
      private void ensureAddressIsMutable() {
        if (!((bitField0_ & 0x00000008) == 0x00000008)) {
          address_ = new com.google.protobuf.LazyStringArrayList(address_);
          bitField0_ |= 0x00000008;
         }
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public java.util.List<String>
          getAddressList() {
        return java.util.Collections.unmodifiableList(address_);
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public int getAddressCount() {
        return address_.size();
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public String getAddress(int index) {
        return address_.get(index);
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public com.google.protobuf.ByteString
          getAddressBytes(int index) {
        return address_.getByteString(index);
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public Builder setAddress(
          int index, String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  ensureAddressIsMutable();
        address_.set(index, value);
        onChanged();
        return this;
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public Builder addAddress(
          String value) {
        if (value == null) {
    throw new NullPointerException();
  }
  ensureAddressIsMutable();
        address_.add(value);
        onChanged();
        return this;
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public Builder addAllAddress(
          Iterable<String> values) {
        ensureAddressIsMutable();
        super.addAll(values, address_);
        onChanged();
        return this;
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public Builder clearAddress() {
        address_ = com.google.protobuf.LazyStringArrayList.EMPTY;
        bitField0_ = (bitField0_ & ~0x00000008);
        onChanged();
        return this;
      }
      /**
       * <code>repeated string address = 4;</code>
       */
      public Builder addAddressBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) {
    throw new NullPointerException();
  }
  ensureAddressIsMutable();
        address_.add(value);
        onChanged();
        return this;
      }

      // @@protoc_insertion_point(builder_scope:netty.SubscribeReq)
    }

    static {
      defaultInstance = new SubscribeReq(true);
      defaultInstance.initFields();
    }

    // @@protoc_insertion_point(class_scope:netty.SubscribeReq)
  }

  private static com.google.protobuf.Descriptors.Descriptor
    internal_static_netty_SubscribeReq_descriptor;
  private static
    com.google.protobuf.GeneratedMessage.FieldAccessorTable
      internal_static_netty_SubscribeReq_fieldAccessorTable;

  public static com.google.protobuf.Descriptors.FileDescriptor
      getDescriptor() {
    return descriptor;
  }
  private static com.google.protobuf.Descriptors.FileDescriptor
      descriptor;
  static {
    String[] descriptorData = {
      "\n\022SubscribeReq.proto\022\005netty\"X\n\014Subscribe" +
      "Req\022\020\n\010subReqID\030\001 \002(\005\022\020\n\010userName\030\002 \002(\t\022" +
      "\023\n\013productName\030\003 \002(\t\022\017\n\007address\030\004 \003(\tB-\n" +
      "\030com.netty.codes.protobufB\021SubscribeReqP" +
      "roto"
    };
    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
      new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
        public com.google.protobuf.ExtensionRegistry assignDescriptors(
            com.google.protobuf.Descriptors.FileDescriptor root) {
          descriptor = root;
          internal_static_netty_SubscribeReq_descriptor =
            getDescriptor().getMessageTypes().get(0);
          internal_static_netty_SubscribeReq_fieldAccessorTable = new
            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
              internal_static_netty_SubscribeReq_descriptor,
              new String[] { "SubReqID", "UserName", "ProductName", "Address", });
          return null;
        }
      };
    com.google.protobuf.Descriptors.FileDescriptor
      .internalBuildGeneratedFileFrom(descriptorData,
        new com.google.protobuf.Descriptors.FileDescriptor[] {
        }, assigner);
  }

  // @@protoc_insertion_point(outer_class_scope)
}

SubscribeRespProto.java檔案

// Generated by the protocol buffer compiler.  DO NOT EDIT!
// source: SubscribeResp.proto

package com.netty.codes.protobuf;

public final class SubscribeRespProto {
  private SubscribeRespProto() {}
  public static void registerAllExtensions(
      com.google.protobuf.ExtensionRegistry registry) {
  }
  public interface SubscribeRespOrBuilder
      extends com.google.protobuf.MessageOrBuilder {

    // required int32 subReqID = 1;
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    boolean hasSubReqID();
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    int getSubReqID();

    // required int32 respCode = 2;
    /**
     * <code>required int32 respCode = 2;</code>
     */
    boolean hasRespCode();
    /**
     * <code>required int32 respCode = 2;</code>
     */
    int getRespCode();

    // required string desc = 3;
    /**
     * <code>required string desc = 3;</code>
     */
    boolean hasDesc();
    /**
     * <code>required string desc = 3;</code>
     */
    String getDesc();
    /**
     * <code>required string desc = 3;</code>
     */
    com.google.protobuf.ByteString
        getDescBytes();
  }
  /**
   * Protobuf type {@code netty.SubscribeResp}
   */
  public static final class SubscribeResp extends
      com.google.protobuf.GeneratedMessage
      implements SubscribeRespOrBuilder {
    // Use SubscribeResp.newBuilder() to construct.
    private SubscribeResp(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
      super(builder);
      this.unknownFields = builder.getUnknownFields();
    }
    private SubscribeResp(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }

    private static final SubscribeResp defaultInstance;
    public static SubscribeResp getDefaultInstance() {
      return defaultInstance;
    }

    public SubscribeResp getDefaultInstanceForType() {
      return defaultInstance;
    }

    private final com.google.protobuf.UnknownFieldSet unknownFields;
    @Override
    public final com.google.protobuf.UnknownFieldSet
        getUnknownFields() {
      return this.unknownFields;
    }
    private SubscribeResp(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      initFields();
      int mutable_bitField0_ = 0;
      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
          com.google.protobuf.UnknownFieldSet.newBuilder();
      try {
        boolean done = false;
        while (!done) {
          int tag = input.readTag();
          switch (tag) {
            case 0:
              done = true;
              break;
            default: {
              if (!parseUnknownField(input, unknownFields,
                                     extensionRegistry, tag)) {
                done = true;
              }
              break;
            }
            case 8: {
              bitField0_ |= 0x00000001;
              subReqID_ = input.readInt32();
              break;
            }
            case 16: {
              bitField0_ |= 0x00000002;
              respCode_ = input.readInt32();
              break;
            }
            case 26: {
              bitField0_ |= 0x00000004;
              desc_ = input.readBytes();
              break;
            }
          }
        }
      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
        throw e.setUnfinishedMessage(this);
      } catch (java.io.IOException e) {
        throw new com.google.protobuf.InvalidProtocolBufferException(
            e.getMessage()).setUnfinishedMessage(this);
      } finally {
        this.unknownFields = unknownFields.build();
        makeExtensionsImmutable();
      }
    }
    public static final com.google.protobuf.Descriptors.Descriptor
        getDescriptor() {
      return SubscribeRespProto.internal_static_netty_SubscribeResp_descriptor;
    }

    protected FieldAccessorTable
        internalGetFieldAccessorTable() {
      return SubscribeRespProto.internal_static_netty_SubscribeResp_fieldAccessorTable
          .ensureFieldAccessorsInitialized(
              SubscribeResp.class, Builder.class);
    }

    public static com.google.protobuf.Parser<SubscribeResp> PARSER =
        new com.google.protobuf.AbstractParser<SubscribeResp>() {
      public SubscribeResp parsePartialFrom(
          com.google.protobuf.CodedInputStream input,
          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
          throws com.google.protobuf.InvalidProtocolBufferException {
        return new SubscribeResp(input, extensionRegistry);
      }
    };

    @Override
    public com.google.protobuf.Parser<SubscribeResp> getParserForType() {
      return PARSER;
    }

    private int bitField0_;
    // required int32 subReqID = 1;
    public static final int SUBREQID_FIELD_NUMBER = 1;
    private int subReqID_;
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    public boolean hasSubReqID() {
      return ((bitField0_ & 0x00000001) == 0x00000001);
    }
    /**
     * <code>required int32 subReqID = 1;</code>
     */
    public int getSubReqID() {
      return subReqID_;
    }

    // required int32 respCode = 2;
    public static final int RESPCODE_FIELD_NUMBER = 2;
    private int respCode_;
    /**
     * <code>required int32 respCode = 2;</code>
     */
    public boolean hasRespCode() {
      return ((bitField0_ & 0x00000002) == 0x00000002);
    }
    /**
     * <code>required int32 respCode = 2;</code>
     */
    public int getRespCode() {
      return respCode_;
    }

    // required string desc = 3;
    public static final int DESC_FIELD_NUMBER = 3;
    private Object desc_;
    /**
     * <code>required string desc = 3;</code>
     */
    public boolean hasDesc() {
      return ((bitField0_ & 0x00000004) == 0x00000004);
    }
    /**
     * <code>required string desc = 3;</code>
     */
    public String getDesc() {
      Object ref = desc_;
      if (ref instanceof String) {
        return (String) ref;
      } else {
        com.google.protobuf.ByteString bs = 
            (com.google.protobuf.ByteString) ref;
        String s = bs.toStringUtf8();
        if (bs.isValidUtf8()) {
          desc_ = s;
        }
        return s;
      }
    }
    /**
     * <code>required string desc = 3;</code>
     */
    public com.google.protobuf.ByteString
        getDescBytes() {
      Object ref = desc_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b = 
            com.google.protobuf.ByteString.copyFromUtf8(
                (String) ref);
        desc_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    private void initFields() {
      subReqID_ = 0;
      respCode_ = 0;
      desc_ = "";
    }
    private byte memoizedIsInitialized = -1;
    public final boolean isInitialized() {
      byte isInitialized = memoizedIsInitialized;
      if (isInitialized != -1) return isInitialized == 1;

      if (!hasSubReqID()) {
        memoizedIsInitialized = 0;
        return false;
      }
      if (!hasRespCode()) {
        memoizedIsInitialized = 0;
        return false;
      }
      if (!hasDesc()) {
        memoizedIsInitialized = 0;
        return false;
      }
      memoizedIsInitialized = 1;
      return true;
    }

    public void writeTo(com.google.protobuf.CodedOutputStream output)
                        throws java.io.IOException {
      getSerializedSize();
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        output.writeInt32(1, subReqID_);
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        output.writeInt32(2, respCode_);
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        output.writeBytes(3, getDescBytes());
      }
      getUnknownFields().writeTo(output);
    }

    private int memoizedSerializedSize = -1;
    public int getSerializedSize() {
      int size = memoizedSerializedSize;
      if (size != -1) return size;

      size = 0;
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        size += com.google.protobuf.CodedOutputStream
          .computeInt32Size(1, subReqID_);
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        size += com.google.protobuf.CodedOutputStream
          .computeInt32Size(2, respCode_);
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBytesSize(3, getDescBytes());
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSerializedSize = size;
      return size;
    }

    private static final long serialVersionUID = 0L;
    @Override
    protected Object writeReplace()
        throws java.io.ObjectStreamException {
      return super.writeReplace();
    }

    public static SubscribeResp parseFrom(
        com.google.protobuf.ByteString data)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static SubscribeResp parseFrom(
        com.google.protobuf.ByteString data,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static SubscribeResp parseFrom(byte[] data)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data);
    }
    public static SubscribeResp parseFrom(
        byte[] data,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws com.google.protobuf.InvalidProtocolBufferException {
      return PARSER.parseFrom(data, extensionRegistry);
    }
    public static SubscribeResp parseFrom(java.io.InputStream input)
        throws java.io.IOException {
      return PARSER.parseFrom(input);
    }
    public static SubscribeResp parseFrom(
        java.io.InputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseFrom(input, extensionRegistry);
    }
    public static SubscribeResp parseDelimitedFrom(java.io.InputStream input)
        throws java.io.IOException {
      return PARSER.parseDelimitedFrom(input);
    }
    public static SubscribeResp parseDelimitedFrom(
        java.io.InputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseDelimitedFrom(input, extensionRegistry);
    }
    public static SubscribeResp parseFrom(
        com.google.protobuf.CodedInputStream input)
        throws java.io.IOException {
      return PARSER.parseFrom(input);
    }
    public static SubscribeResp parseFrom(
        com.google.protobuf.CodedInputStream input,
        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
        throws java.io.IOException {
      return PARSER.parseFrom(input, extensionRegistry);
    }

    public static Builder newBuilder() { return Builder.create(); }
    public Builder newBuilderForType() { return newBuilder(); }
    public static Builder newBuilder(SubscribeResp prototype) {
      return newBuilder().mergeFrom(prototype);
    }
    public Builder toBuilder() { return newBuilder(this); }

    @Override
    protected Builder newBuilderForType(
        BuilderParent parent) {
      Builder builder = new Builder(parent);
      return builder;
    }
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     * Protobuf type {@code netty.SubscribeResp}
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      private Builder() {
        maybeForceBuilderInitialization();
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      private Builder(
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        bitField0_ = (bitField0_ & ~0x00000001);
        respCode_ = 0;
        bitField0_ = (bitField0_ & ~0x00000002);
        desc_ = "";
        bitField0_ = (bitField0_ & ~0x00000004);
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        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
          parsedMessage = (SubscribeResp) e.getUnfinishedMessage();
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      }
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        subReqID_ = value;
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      /**
       * <code>required int32 subReqID = 1;</code>
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        subReqID_ = 0;
        onChanged();
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      // required int32 respCode = 2;
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      }
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       * <code>required int32 respCode = 2;</code>
       */
      public Builder setRespCode(int value) {
        bitField0_ |= 0x00000002;
        respCode_ = value;
        onChanged();
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      }
      /**
       * <code>required int32 respCode = 2;</code>
       */
      public Builder clearRespCode() {
        bitField0_ = (bitField0_ & ~0x00000002);
        respCode_ = 0;
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    static {
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