97 lines
3.4 KiB
C#
97 lines
3.4 KiB
C#
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using Microsoft.Extensions.Hosting;
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using NetMQ;
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using NetMQ.Sockets;
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using Newtonsoft.Json;
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using SHH.CameraSdk;
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using System.Text;
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namespace SHH.CameraService;
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public class CommandClientWorker : BackgroundService
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{
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private readonly ServiceConfig _config;
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public CommandClientWorker(ServiceConfig config)
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{
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_config = config;
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}
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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// 1. 如果不是主动/混合模式，不需要连接
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if (!_config.ShouldConnect) return;
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// ★★★ 核心修正：直接读取解析好的指令地址列表 ★★★
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// 这些地址来自参数 --uris "IP,VideoPort&CommandPort" 中的 CommandPort 部分
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var cmdUris = _config.CommandEndpoints;
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if (cmdUris.Count == 0)
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{
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Console.WriteLine("[指令] 未在参数中找到指令通道地址(位于&符号右侧)，跳过连接。");
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return;
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}
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// 2. 初始化 Dealer Socket
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using var dealer = new DealerSocket();
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// 设置身份 (Identity)，让 Dashboard 知道我是 "CameraApp_01"
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string myIdentity = _config.AppId;
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dealer.Options.Identity = Encoding.UTF8.GetBytes(myIdentity);
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// 3. 连接所有目标 (支持多点控制)
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foreach (var uri in cmdUris)
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{
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Console.WriteLine($"[指令] 连接控制端: {uri}");
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dealer.Connect(uri);
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}
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// 4. 发送登录包 (握手)
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// 构造心跳包
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var heartbeat = new
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{
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Type = "Login",
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Id = myIdentity,
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Time = DateTime.Now
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};
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string loginJson = JsonConvert.SerializeObject(heartbeat);
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// 注意：Dealer Socket 发送是负载均衡的 (Round-Robin)。
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// 如果连接了多个 Dashboard，SendFrame 一次只会发给其中一个。
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// 为了确保所有 Dashboard 都能收到上线通知，我们根据连接数循环发送几次。
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// (注：这只是初始化时的权宜之计，心跳包后续可以定时发送)
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for (int i = 0; i < cmdUris.Count; i++)
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{
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dealer.SendFrame(loginJson);
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await Task.Delay(10); // 稍微间隔，给 ZMQ 内部调度一点时间
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}
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Console.WriteLine($"[指令] 已发送登录包 (ID: {myIdentity})，进入监听循环...");
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// 5. 监听循环
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while (!stoppingToken.IsCancellationRequested)
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{
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try
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{
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// 非阻塞接收 (500ms 超时)，避免卡死线程
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if (dealer.TryReceiveFrameString(TimeSpan.FromMilliseconds(500), out string msg))
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{
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Console.WriteLine($"[指令] 收到: {msg}");
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// TODO: 在这里解析 JSON 并调用 CameraSDK 执行业务
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// var cmd = JsonConvert.DeserializeObject<CommandModel>(msg);
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// if (cmd.Action == "Reboot") ...
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// 回复 ACK (确认收到)
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// Dealer 会自动根据 Router 发来的 RoutingID 路由回去
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dealer.SendFrame($"ACK: {msg} (From {myIdentity})");
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"[指令] 通信异常: {ex.Message}");
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// 防止异常死循环刷屏
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await Task.Delay(1000, stoppingToken);
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}
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}
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}
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}
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