More work on SeqBackgroundService, next step is tests for it.

Core/Telemetry/SeqLoggingTelemetryChannel.cs

@@ -0,0 +1,52 @@
+using Microsoft.ApplicationInsights.Channel;
+using System.Net.Http.Headers;
+
+namespace Core.Telemetry
+{
+    public class SeqLoggingTelemetryChannel : InMemoryChannel, ITelemetryChannel
+    {
+        private readonly string _filePath;
+        public ITelemetryChannel _defaultChannel;
+        static HttpClient _client = new HttpClient();
+
+        static SeqLoggingTelemetryChannel()
+        {
+            _client = new HttpClient()
+            {
+                BaseAddress = new Uri("http://localhost:5341"),
+                Timeout = TimeSpan.FromSeconds(30)
+            };
+
+            _client.DefaultRequestHeaders.Accept.Clear();
+            _client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+        }
+
+
+        public SeqLoggingTelemetryChannel(string filePath)
+        {
+            _filePath = filePath;
+        }
+        public new void Send(ITelemetry telemetry)
+        {
+            //var l = new SeqLogger(_client, "", "");
+
+            //l.LogToSeq(
+            //       "Bruger {UserId} loggede ind",
+            //       "Debug",
+            //       new Dictionary<string, object> { { "UserId", "12345" }, { "Counter", "i++" } }
+            //   );
+
+
+            //if (telemetry is Microsoft.ApplicationInsights.DataContracts.TraceTelemetry trace)
+            //{
+            //    var severity = trace.SeverityLevel;
+            //    Console.WriteLine($"Trace severity: {severity}, Message: {trace.Message}");
+            //}
+
+
+            base.Send(telemetry);
+            var logEntry = $"{DateTime.UtcNow:u}|{telemetry.Context.Operation.Name}|{telemetry.Context.Operation.Id}";
+            //File.AppendAllText(_filePath, logEntry + Environment.NewLine);
+        }
+    }
+}