package com.ard.work.component.netty;
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import com.ard.work.component.netty.command.register.HeartbeatCmd;
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import com.ard.work.component.netty.handler.ClientHandler;
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import com.ard.work.component.netty.handler.MessageProtocolDecoder;
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import com.ard.work.component.netty.handler.MessageProtocolEncoder;
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import com.ard.work.component.netty.cache.TyTcpServerCache;
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import com.ard.work.domain.entity.ArdServerInfo;
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import com.ard.work.service.IArdServerInfoService;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.channel.*;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioSocketChannel;
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import io.netty.handler.timeout.IdleStateHandler;
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import io.netty.util.AttributeKey;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.scheduling.annotation.Scheduled;
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import org.springframework.stereotype.Component;
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import javax.annotation.PostConstruct;
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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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@Slf4j
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public class TyTcpClientManager {
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private final EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
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@Resource
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private IArdServerInfoService ardServerService; // ← 从数据库读取边缘服务器配置
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@Resource
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private ClientHandler clientHandler;
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/**
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* 初始化 Bootstrap
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*/
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private Bootstrap getBootstrap() {
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Bootstrap bootstrap = new Bootstrap();
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bootstrap.group(eventLoopGroup)
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.channel(NioSocketChannel.class)
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.option(ChannelOption.TCP_NODELAY, true)
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.option(ChannelOption.SO_KEEPALIVE, true)
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.handler(new ChannelInitializer<SocketChannel>() {
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@Override
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protected void initChannel(SocketChannel socketChannel) {
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ChannelPipeline pipeline = socketChannel.pipeline();
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pipeline.addLast("heart", new IdleStateHandler(0, 3, 0, TimeUnit.SECONDS));
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pipeline.addLast("encoder", new MessageProtocolEncoder());
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pipeline.addLast("decoder", new MessageProtocolDecoder());
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pipeline.addLast("handler", clientHandler);
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}
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});
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return bootstrap;
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}
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/**
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* 新增或重连服务器
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*/
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public void connectServer(ArdServerInfo serverInfo) {
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String serverId = serverInfo.getId();
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String host = serverInfo.getHost();
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Integer port = serverInfo.getTcpPort();
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// 如果已有旧连接，先断开
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disconnectServer(serverId);
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Bootstrap bootstrap = getBootstrap();
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bootstrap.connect(host, port).addListener((ChannelFuture f) -> {
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if (f.isSuccess()) {
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log.info("✅ 服务器 [{}] 连接成功", serverId);
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Channel channel = f.channel();
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channel.attr(AttributeKey.valueOf("serverId")).set(serverId);
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TyTcpServerCache.putTcpServerCache(serverId, true);
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// 断开服务器，修改状态为： 0 - 在线
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ardServerService.updateServerStatus(serverId, "1");
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// 成功后再加入 channels
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TyTcpServerCache.putChannel(serverId, channel);
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} else {
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log.warn("❌ 服务器 [{}] 连接失败", serverId);
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TyTcpServerCache.putTcpServerCache(serverId, false);
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// 断开服务器，修改状态为： 0 - 离线
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ardServerService.updateServerStatus(serverId, "0");
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}
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});
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}
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/**
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* 断开服务器连接
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*/
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public void disconnectServer(String serverId) {
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Channel channel = TyTcpServerCache.getChannel(serverId);
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if (channel != null) {
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channel.close();
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log.info("断开服务器 [{}] 连接", serverId);
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// 断开服务器，修改状态为： 0 - 离线
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ardServerService.updateServerStatus(serverId, "0");
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TyTcpServerCache.removeChannel(serverId);
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}
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TyTcpServerCache.removeTcpServerCache(serverId);
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}
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/**
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* 启动时从数据库加载所有边缘服务器并建立 TCP 连接
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*/
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@PostConstruct
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public void initConnectServers() {
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try {
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var serverList = ardServerService.selectArdServerInfoList(new ArdServerInfo()); // ← 从数据库查询所有服务器配置
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if (serverList == null || serverList.isEmpty()) {
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log.warn("未在数据库中找到边缘服务器配置，跳过连接初始化");
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return;
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}
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for (ArdServerInfo serverInfo : serverList) {
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connectServer(serverInfo);
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}
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log.info("共初始化 {} 个边缘服务器连接", serverList.size());
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} catch (Exception e) {
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log.error("创建边缘服务器连接异常：{}", e.getMessage(), e);
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}
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}
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@Scheduled(fixedDelay = 10000) // 每 10 秒检查一次
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public void reconnectFailedServers() {
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TyTcpServerCache.getTcpServerCacheMap().forEach((key, state) -> {
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if (Boolean.FALSE.equals(state)) { // 连接失败的服务器
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ArdServerInfo serverInfo = ardServerService.selectArdServerInfoById(key);
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if (serverInfo != null) {
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log.warn("服务器 [{}] 连接失败，尝试重连", key);
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connectServer(serverInfo);
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}
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}
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});
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}
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/**
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* 定时向所有已连接的六合服务器发送心跳
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*/
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@Scheduled(fixedRate = 5000) // 每5秒执行一次
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public void sendHeartBeat() {
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long timestamp = System.currentTimeMillis();
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TyTcpServerCache.getChannels().stream()
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// 过滤出仍然活跃的连接
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.filter(channel -> channel != null && channel.isActive())
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.forEach(channel -> {
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String serverId = (String) channel.attr(AttributeKey.valueOf("serverId")).get();
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HeartbeatCmd heartbeat = new HeartbeatCmd(timestamp);
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channel.writeAndFlush(heartbeat);
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log.info("→ 向边缘服务器 [{}]发送心跳，时间戳={}", serverId, timestamp);
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});
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}
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}
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