fix synapse use mqtt

Synapse/EventClient.cs

@@ -1,31 +1,25 @@
-using System;
-using System.Text;
-using System.Text.Encodings.Web;
 using System.Text.Json;
-using System.Text.Unicode;
+using System.Threading;
 using Microsoft.Extensions.Logging;
+using MQTTnet;
 using SimApi.Helpers;
 
 namespace SimApi;
 
 public partial class Synapse
 {
-    private void RunEventClient()
-    {
-        EventClientChannel = CreateChannel(0, "EventClient");
-    }
-
-    private void FireEvent(string eventName, object param)
+    private bool FireEvent(string eventName, object param, bool retain = false)
     {
         var paramJson = JsonSerializer.Serialize(param, SimApiUtil.JsonOption);
-        var router = $"event.{Options.AppName}.{eventName}";
-        var props = EventClientChannel.CreateBasicProperties();
-        props.AppId = Options.AppId;
-        props.MessageId = Guid.NewGuid().ToString();
-        props.ReplyTo = Options.AppName;
-        props.Type = eventName;
-        EventClientChannel.BasicPublish(Options.SysName, router, false, props, Encoding.UTF8.GetBytes(paramJson));
-        Logger.LogDebug("Event Publish: {OptionsAppName}.{EventName}\n{ParamJson}", Options.AppName, eventName,
-            paramJson);
+        var topic = $"{Options.SysName}/{Options.AppName}/event/{eventName}";
+        var message = new MqttApplicationMessageBuilder()
+            .WithTopic(topic)
+            .WithPayload(paramJson)
+            .WithRetainFlag(retain)
+            .Build();
+        if (!Client!.IsConnected) return false;
+        Client!.PublishAsync(message, CancellationToken.None).Wait();
+        logger.LogDebug("Event Publish: {Event}@{App} {Json}", eventName, Options.AppName, paramJson);
+        return true;
     }
 }