Working on BackgroundService for Seq Logging

Core/Configurations/IAppConfiguration.cs

@@ -0,0 +1,9 @@
+namespace Core.Configurations
+{
+    /// <summary>
+    /// Marker interface for application configurations that should be automatically registered in the DI container.
+    /// Classes implementing this interface will be loaded from configuration and registered as singletons.
+    /// </summary>
+    public interface IAppConfiguration { }
+
+}

Core/ModuleRegistry/SeqBackgroundServiceModule.cs

@@ -0,0 +1,20 @@
+using Autofac;
+using Core.Telemetry;
+
+namespace Core.ModuleRegistry
+{
+    public class SeqBackgroundServiceModule : Module
+    {
+        protected override void Load(ContainerBuilder builder)
+        {
+
+            builder.RegisterType<MessageChannel>()
+           .As<IMessageChannel>()
+           .SingleInstance();
+
+            builder.RegisterType<SeqBackgroundService>()
+                .As<Microsoft.Extensions.Hosting.IHostedService>()
+                .SingleInstance();
+        }
+    }
+}

Core/Telemetry/IMessageChannel.cs

@@ -0,0 +1,9 @@
+using System.Threading.Channels;
+namespace Core.Telemetry
+{
+    public interface IMessageChannel : IDisposable
+    {
+        ChannelWriter<HttpRequestMessage> Writer { get; }
+        ChannelReader<HttpRequestMessage> Reader { get; }
+    }
+}

Core/Telemetry/MessageChannel.cs

@@ -0,0 +1,22 @@
+using System.Threading.Channels;
+
+namespace Core.Telemetry
+{
+    public class MessageChannel : IMessageChannel
+    {
+        private readonly Channel<HttpRequestMessage> _channel;
+
+        public MessageChannel()
+        {
+            _channel = Channel.CreateUnbounded<HttpRequestMessage>();
+        }
+
+        public ChannelWriter<HttpRequestMessage> Writer => _channel.Writer;
+        public ChannelReader<HttpRequestMessage> Reader => _channel.Reader;
+
+        public void Dispose()
+        {
+            _channel.Writer.Complete();
+        }
+    }
+}

Core/Telemetry/SeqBackgroundService.cs

@@ -1,55 +1,63 @@
 using Microsoft.ApplicationInsights;
 using Microsoft.Extensions.Hosting;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Channels;
-using System.Threading.Tasks;
 
 namespace Core.Telemetry
 {
     public class SeqBackgroundService : BackgroundService
     {
-        private readonly Channel<string> _channel;
-        private readonly HttpClient _client;
-        private readonly string _url;
+        private readonly IMessageChannel _messageChannel;
         private readonly TelemetryClient _telemetryClient;
+        private readonly HttpClient _httpClient;
 
-        public SeqBackgroundService(TelemetryClient telemetryClient, Configurations.IConfiguration configuration)
+        public SeqBackgroundService(
+                                    TelemetryClient telemetryClient,
+                                    IMessageChannel messageChannel,
+                                    HttpClient httpClient)
         {
             _telemetryClient = telemetryClient;
-            _url = configuration["Seq:Url"]; // eller hvor din Seq URL kommer fra
-            _client = new HttpClient();
-            _channel = Channel.CreateUnbounded<string>();
-        }
-
-        public void EnqueueMessage(string message)
-        {
-            _channel.Writer.TryWrite(message);
+            _messageChannel = messageChannel;
+            _httpClient = httpClient;
         }
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
-            while (!stoppingToken.IsCancellationRequested)
+            try
             {
-                try
-                {
-                    await foreach (var message in _channel.Reader.ReadAllAsync(stoppingToken))
+                while (!stoppingToken.IsCancellationRequested)
+                    await foreach (var message in _messageChannel.Reader.ReadAllAsync(stoppingToken))
                     {
-                        await _client.PostAsync(_url, new StringContent(message), stoppingToken);
+
+                        try
+                        {
+                            //using var response = await _httpClient.SendAsync(message, stoppingToken);
+                            //if (!response.IsSuccessStatusCode)
+                            //{
+                            //    _telemetryClient.TrackTrace($"HTTP kald fejlede med status {response.StatusCode}", Microsoft.ApplicationInsights.DataContracts.SeverityLevel.Warning);
+                            //    continue;
+                            //}
+                        }
+                        catch (Exception ex)
+                        {
+                            _telemetryClient.TrackException(ex);
+                        }
                     }
-                }
-                catch (Exception ex)
+            }
+            catch (Exception ex)
+            {
+                if (ex is not OperationCanceledException)
                 {
                     _telemetryClient.TrackException(ex);
+                    throw;
                 }
+
+                _telemetryClient.TrackTrace("Service shutdown påbegyndt");
             }
         }
 
         public override async Task StopAsync(CancellationToken cancellationToken)
         {
-            _channel.Writer.Complete();
+
+            _messageChannel.Dispose();
             await base.StopAsync(cancellationToken);
         }
     }