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https://codeup.aliyun.com/67c68d4e484ca2f0a13ac3c1/ydc/jsowell-charger-web.git
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package com.jsowell.netty.server.yunkuaichong;
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import com.jsowell.common.constant.Constants;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import io.netty.handler.logging.LogLevel;
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import io.netty.handler.logging.LoggingHandler;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.boot.CommandLineRunner;
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import org.springframework.core.annotation.Order;
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import org.springframework.stereotype.Component;
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import javax.annotation.Resource;
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import java.net.InetSocketAddress;
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@Slf4j
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@Component
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public class NettyServer implements CommandLineRunner {
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@Resource
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private NettyServerChannelInitializer nettyServerChannelInitializer;
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@Order(value = 1)
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@Override
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public void run(String... args) throws Exception {
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InetSocketAddress address = new InetSocketAddress(Constants.SOCKET_IP, Constants.SOCKET_PORT);
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this.start(address);
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}
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public void start(InetSocketAddress address) {
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// log.info("========NettyServer.start order 1");
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//配置服务端的NIO线程组
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EventLoopGroup bossGroup = new NioEventLoopGroup(1);
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EventLoopGroup workerGroup = new NioEventLoopGroup();
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try {
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ServerBootstrap bootstrap = new ServerBootstrap() // //启动NIO服务的辅助启动类
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.group(bossGroup, workerGroup) // 绑定线程池
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.channel(NioServerSocketChannel.class) // 启动服务时, 通过反射创建一个NioServerSocketChannel对象
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/*
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===> 服务器初始化时执行, 属于AbstracBootstrap的方法
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*/
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.handler(new LoggingHandler(LogLevel.DEBUG)) // handler在初始化时就会执行，可以设置打印日志级别
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// 设置tcp缓冲区, 可连接队列大小
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.option(ChannelOption.SO_BACKLOG, 128) //服务端接受连接的队列长度，如果队列已满，客户端连接将被拒绝
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.option(ChannelOption.SO_REUSEADDR, true) //允许重复使用本地地址和端口
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/*
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===> 客户端连接成功之后执行, 属于ServerBootstrap的方法,继承自AbstractBootstrap
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*/
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.childOption(ChannelOption.SO_KEEPALIVE, true) //两小时没有数据通信时, 启用心跳保活机制探测客户端是否连接有效
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.childOption(ChannelOption.SO_REUSEADDR, true)
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.childHandler(nettyServerChannelInitializer)//编码解码
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// 地址
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.localAddress(address);
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// 绑定端口，开始接收进来的连接
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ChannelFuture future = bootstrap.bind(address.getPort()).sync();
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if (future.isSuccess()) {
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log.info("NettyServer启动成功, 开始监听端口:{}", address.getPort());
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} else {
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log.error("NettyServer启动失败", future.cause());
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}
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//关闭channel和块，直到它被关闭
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future.channel().closeFuture().sync();
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} catch (Exception e) {
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log.error("NettyServer.start error", e);
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bossGroup.shutdownGracefully();
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workerGroup.shutdownGracefully();
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}
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}
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}
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@@ -0,0 +1,32 @@
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package com.jsowell.netty.server.yunkuaichong;
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import com.jsowell.netty.decoder.StartAndLengthFieldFrameDecoder;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelPipeline;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.handler.codec.bytes.ByteArrayDecoder;
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import io.netty.handler.timeout.IdleStateHandler;
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import org.springframework.stereotype.Component;
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import javax.annotation.Resource;
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import java.util.concurrent.TimeUnit;
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@Component
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public class NettyServerChannelInitializer extends ChannelInitializer<SocketChannel> {
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@Resource
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NettyServerHandler nettyServerHandler;
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@Override
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protected void initChannel(SocketChannel channel) throws Exception {
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ChannelPipeline pipeline = channel.pipeline();
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// pipeline.addLast("decoder",new CustomDecoder());
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pipeline.addLast("frameDecoder", new StartAndLengthFieldFrameDecoder(0x68));
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pipeline.addLast("decoder", new ByteArrayDecoder());
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pipeline.addLast("encoder", new ByteArrayDecoder());
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//读超时时间设置为10s，0表示不监控
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pipeline.addLast(new IdleStateHandler(60, 0, 0, TimeUnit.SECONDS));
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pipeline.addLast("handler", nettyServerHandler);
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}
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}
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@@ -0,0 +1,203 @@
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package com.jsowell.netty.server.yunkuaichong;
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import com.google.common.collect.Lists;
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import com.jsowell.common.enums.ykc.PileChannelEntity;
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import com.jsowell.common.util.BytesUtil;
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import com.jsowell.common.util.YKCUtils;
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import com.jsowell.netty.service.yunkuaichong.YKCBusinessService;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelHandler;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelId;
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import io.netty.channel.ChannelInboundHandlerAdapter;
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import io.netty.handler.timeout.IdleState;
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import io.netty.handler.timeout.IdleStateEvent;
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import io.netty.handler.timeout.ReadTimeoutException;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.collections4.CollectionUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import javax.xml.bind.DatatypeConverter;
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import java.net.InetSocketAddress;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Objects;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* netty服务端处理类
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*/
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@ChannelHandler.Sharable
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@Slf4j
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@Component
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public class NettyServerHandler extends ChannelInboundHandlerAdapter {
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@Autowired
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private YKCBusinessService ykcService;
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/**
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* 管理一个全局map，保存连接进服务端的通道数量
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*/
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private static final ConcurrentHashMap<ChannelId, ChannelHandlerContext> CHANNEL_MAP = new ConcurrentHashMap<>();
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private final List<String> notPrintFrameTypeList = Lists.newArrayList("0x03");
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/**
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* 有客户端连接服务器会触发此函数
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* 连接被建立并且准备进行通信时被调用
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*/
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@Override
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public void channelActive(ChannelHandlerContext ctx) {
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InetSocketAddress insocket = (InetSocketAddress) ctx.channel().remoteAddress();
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String clientIp = insocket.getAddress().getHostAddress();
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int clientPort = insocket.getPort();
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//获取连接通道唯一标识
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ChannelId channelId = ctx.channel().id();
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//如果map中不包含此连接，就保存连接
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if (CHANNEL_MAP.containsKey(channelId)) {
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log.info("客户端【{}】是连接状态，连接通道数量: {}", channelId, CHANNEL_MAP.size());
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} else {
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//保存连接
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CHANNEL_MAP.put(channelId, ctx);
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log.info("客户端【{}】, 连接netty服务器[IP:{}--->PORT:{}], 连接通道数量: {}", channelId, clientIp, clientPort, CHANNEL_MAP.size());
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}
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}
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/**
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* 有客户端发消息会触发此函数
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*/
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@Override
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public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
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// log.info("加载客户端报文=== channelId:" + ctx.channel().id() + ", msg:" + msg);
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// 下面可以解析数据，保存数据，生成返回报文，将需要返回报文写入write函数
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byte[] arr = (byte[]) msg;
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// 获取帧类型
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String frameType = YKCUtils.frameType2Str(BytesUtil.copyBytes(arr, 5, 1));
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// 获取序列号域
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int serialNumber = BytesUtil.bytesToIntLittle(BytesUtil.copyBytes(arr, 2, 2));
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// new
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String hexString = DatatypeConverter.printHexBinary(arr);
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// 心跳包0x03日志太多，造成日志文件过大，改为不打印
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if (!CollectionUtils.containsAny(notPrintFrameTypeList, frameType)) {
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log.info("【<<<<<平台收到消息<<<<<】channel:{}, 帧类型:{}, 序列号域:{}, 报文:{}, new报文:{}, msg:{}",
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ctx.channel().id(), frameType, serialNumber, BytesUtil.binary(arr, 16), hexString, Arrays.toString(arr));
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}
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// 处理数据
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byte[] result = ykcService.process(arr, ctx.channel());
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if (Objects.nonNull(result)) {
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// 响应客户端
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ByteBuf buffer = ctx.alloc().buffer().writeBytes(result);
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this.channelWrite(ctx.channel().id(), buffer);
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if (!CollectionUtils.containsAny(notPrintFrameTypeList, frameType)) {
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log.info("【>>>>>平台响应消息>>>>>】:{}", BytesUtil.binary(result, 16));
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}
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}
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}
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/**
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* 有客户端终止连接服务器会触发此函数
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*/
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@Override
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public void channelInactive(ChannelHandlerContext ctx) {
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InetSocketAddress insocket = (InetSocketAddress) ctx.channel().remoteAddress();
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String clientIp = insocket.getAddress().getHostAddress();
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ChannelId channelId = ctx.channel().id();
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//包含此客户端才去删除
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if (CHANNEL_MAP.containsKey(channelId)) {
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ykcService.exit(channelId);
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//删除连接
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CHANNEL_MAP.remove(channelId);
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log.info("客户端【{}】, 退出netty服务器[IP:{}--->PORT:{}], 连接通道数量: {}", channelId, clientIp, insocket.getPort(), CHANNEL_MAP.size());
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}
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}
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@Override
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public void handlerAdded(ChannelHandlerContext ctx) throws Exception { // (2)
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// Channel incoming = ctx.channel();
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// log.info("handlerAdded: handler被添加到channel的pipeline connect:" + incoming.remoteAddress());
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}
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@Override
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public void handlerRemoved(ChannelHandlerContext ctx) throws Exception { // (3)
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// Channel incoming = ctx.channel();
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// log.info("handlerRemoved: handler从channel的pipeline中移除 connect:" + incoming.remoteAddress());
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// ChannelMapByEntity.removeChannel(incoming);
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// ChannelMap.removeChannel(incoming);
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}
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
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Channel channel = ctx.channel();
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// log.info("channel:【{}】读数据完成", channel.id());
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super.channelReadComplete(ctx);
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}
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/**
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* 服务端给客户端发送消息
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*
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* @param channelId 连接通道唯一id
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* @param msg 需要发送的消息内容
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*/
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public void channelWrite(ChannelId channelId, Object msg) throws Exception {
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ChannelHandlerContext ctx = CHANNEL_MAP.get(channelId);
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if (ctx == null) {
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log.info("通道【{}】不存在", channelId);
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return;
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}
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if (msg == null || msg == "") {
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log.info("服务端响应空的消息");
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return;
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}
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//将客户端的信息直接返回写入ctx
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ctx.write(msg);
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//刷新缓存区
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ctx.flush();
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}
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@Override
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public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
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String socketString = ctx.channel().remoteAddress().toString();
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ChannelId channelId = ctx.channel().id();
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String pileSn = PileChannelEntity.getPileSnByChannelId(channelId.asLongText());
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if (evt instanceof IdleStateEvent) { // 超时事件
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IdleStateEvent event = (IdleStateEvent) evt;
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boolean flag = false;
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if (event.state() == IdleState.READER_IDLE) { // 读
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flag = true;
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log.info("Client-IP:【{}】, channelId:【{}】, pileSn:【{}】, READER_IDLE 读超时", socketString, channelId, pileSn);
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} else if (event.state() == IdleState.WRITER_IDLE) { // 写
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flag = true;
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log.info("Client-IP:【{}】, channelId:【{}】, pileSn:【{}】, WRITER_IDLE 写超时", socketString, channelId, pileSn);
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} else if (event.state() == IdleState.ALL_IDLE) { // 全部
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flag = true;
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log.info("Client-IP:【{}】, channelId:【{}】, pileSn:【{}】, ALL_IDLE 总超时", socketString, channelId, pileSn);
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}
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// if (flag) {
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// ctx.channel().close();
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// }
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}
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}
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/**
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* 发生异常会触发此函数
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*/
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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ChannelId channelId = ctx.channel().id();
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log.error("发生异常 channelId:{}", channelId.asShortText(), cause);
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cause.printStackTrace();
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// 如果桩连到平台，在1分钟内没有发送数据过来，会报ReadTimeoutException异常
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if (cause instanceof ReadTimeoutException) {
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if (log.isTraceEnabled()) {
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log.trace("Connection timeout 【{}】", ctx.channel().remoteAddress());
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}
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log.info("【{}】发生了错误, 此连接被关闭, 此时连通数量: {}", channelId, CHANNEL_MAP.size());
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ctx.channel().close();
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}
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}
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}
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Reference in New Issue
Block a user