update .net, setup modern logging

packages/backend/Program.cs

@@ -1,8 +1,7 @@
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.HttpOverrides;
 using Microsoft.EntityFrameworkCore;
-using Serilog;
-using Serilog.Events;
+using OpenTelemetry.Logs;
 using YaleAccess.Data;
 using YaleAccess.Models.Options;
 using YaleAccess.Services;
@@ -10,15 +9,25 @@ using YaleAccess.Services.Interfaces;
 
 var builder = WebApplication.CreateBuilder(args);
 
-// Create the bootstraper logger
-Log.Logger = new LoggerConfiguration()
-            .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
-            .Enrich.FromLogContext()
-            .WriteTo.Console()
-            .CreateLogger();
-
 try
 {
+    var useOtlpExporter = !string.IsNullOrWhiteSpace(builder.Configuration["OTEL_EXPORTER_OTLP_ENDPOINT"]);
+
+    builder.Logging.AddOpenTelemetry(logging =>
+    {
+        logging.IncludeFormattedMessage = true;
+        logging.IncludeScopes = true;
+
+        if (useOtlpExporter)
+        {
+            logging.AddOtlpExporter();
+        }
+        else
+        {
+            Console.WriteLine("OTEL_EXPORTER_OTLP_ENDPOINT is not set. Skipping OTLP exporter configuration.");
+        }
+    });
+
     // Add services to the container.
     builder.Services.AddControllers();
 
@@ -41,13 +50,6 @@ try
 
     // Get a copy of the configuration
     IConfiguration configuration = builder.Configuration;
-    string logLocation = configuration["LogLocation"] ?? "Log.txt";
-
-    // Setup the application logger
-    Log.Logger = new LoggerConfiguration()
-                .WriteTo.Console(restrictedToMinimumLevel: LogEventLevel.Error)
-                .WriteTo.File(logLocation, rollingInterval: RollingInterval.Day)
-                .CreateLogger();
 
     // Configure the DI services
     builder.Services.AddScoped<SMSService>();
@@ -100,9 +102,6 @@ try
             };
         });
 
-    // Setup logging flow
-    builder.Host.UseSerilog();
-
     var app = builder.Build();
 
     // Create the database if it doesn't exist
@@ -144,11 +143,7 @@ catch (Exception ex)
     // Ignore host aborted exceptions caused by build checks
     if (ex is not HostAbortedException)
     {
-        Log.Fatal(ex, "Host terminated unexpectedly");
+       Console.WriteLine("Host terminated unexpectedly");
         throw;
     }
 }
-finally
-{
-    Log.CloseAndFlush();
-}