1111

2026-11-11 16:11:41 +08:00
parent 3ca90c4cf3
commit 61e25175db
39 changed files with 2176 additions and 31 deletions
@@ -0,0 +1,63 @@
+using MQTTnet;
+using MQTTnet.Client;
+using MQTTnet.Formatter;
+using MQTTnet.Protocol;
+
+namespace Evergreen.Health.Application.Health.Integrations.Ib43;
+
+public interface IIb43MqttTransport : IDisposable
+{
+    bool IsConnected { get; }
+    event Func<string, string, bool, Task> Message;
+    event Action<string> OversizedMessage;
+    Task ConnectAndSubscribeAsync(Ib43Options options, CancellationToken cancellationToken);
+}
+
+public interface IIb43MqttTransportFactory
+{
+    IIb43MqttTransport Create();
+}
+
+public sealed class Ib43MqttTransportFactory : IIb43MqttTransportFactory
+{
+    public IIb43MqttTransport Create() => new Ib43MqttTransport();
+}
+
+public sealed class Ib43MqttTransport : IIb43MqttTransport
+{
+    private readonly IMqttClient _client = new MqttFactory().CreateMqttClient();
+    public bool IsConnected => _client.IsConnected;
+    public event Func<string, string, bool, Task> Message;
+    public event Action<string> OversizedMessage;
+
+    public Ib43MqttTransport()
+    {
+        _client.ApplicationMessageReceivedAsync += async e =>
+        {
+            var m = e.ApplicationMessage;
+            // 在解码前限制长度；不要将大包全部复制进诊断缓存。
+            if (m.PayloadSegment.Count > Ib43StateStore.MaxPayloadBytes)
+                OversizedMessage?.Invoke(m.Topic);
+            else if (Message != null) await Message.Invoke(m.Topic, m.ConvertPayloadToString(), m.Retain);
+        };
+    }
+
+    public async Task ConnectAndSubscribeAsync(Ib43Options options, CancellationToken cancellationToken)
+    {
+        var builder = new MqttClientOptionsBuilder().WithTcpServer(options.Host, options.Port)
+            .WithClientId(options.ClientId).WithCredentials(options.Username, options.Password)
+            .WithProtocolVersion(MqttProtocolVersion.V311).WithCleanSession()
+            .WithKeepAlivePeriod(TimeSpan.FromSeconds(30)).WithTimeout(TimeSpan.FromSeconds(10));
+        if (options.UseTls) builder.WithTlsOptions(t => t.UseTls());
+        await _client.ConnectAsync(builder.Build(), cancellationToken);
+        var subscription = new MqttClientSubscribeOptionsBuilder();
+        foreach (var device in options.Devices)
+            subscription.WithTopicFilter(f => f.WithTopic(device.PostTopic)
+                .WithQualityOfServiceLevel(MqttQualityOfServiceLevel.AtLeastOnce));
+        var result = await _client.SubscribeAsync(subscription.Build(), cancellationToken);
+        if (result.Items.Count != options.Devices.Count || result.Items.Any(i => (int)i.ResultCode >= 128))
+            throw new InvalidOperationException("IB43 subscription rejected");
+    }
+
+    public void Dispose() => _client.Dispose();
+}