Added Elmah, Serilog to Server, improved logging

src/Server/Program.cs

@@ -1,3 +1,6 @@
+using ElmahCore;
+using ElmahCore.Mvc;
+using Serilog;
 using Server;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -8,16 +11,49 @@ builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
-
+Log.Logger = new LoggerConfiguration()
+    .ReadFrom.Configuration(builder.Configuration)
+    .CreateLogger();
+builder.Logging.AddSerilog();
 builder.Services.AddSingleton<SearchdomainManager>();
 
+builder.Services.AddElmah<XmlFileErrorLog>(Options =>
+{
+    Options.LogPath = builder.Configuration.GetValue<string>("Embeddingsearch:Elmah:LogFolder") ?? "~/logs";
+});
+
 var app = builder.Build();
 
+List<string>? allowedIps = builder.Configuration.GetSection("Embeddingsearch:Elmah:AllowedHosts")
+    .Get<List<string>>();
+
+app.Use(async (context, next) =>
+{
+    if (context.Request.Path.StartsWithSegments("/elmah"))
+    {
+        var remoteIp = context.Connection.RemoteIpAddress?.ToString();
+        bool blockRequest = allowedIps is null
+            || remoteIp is null
+            || !allowedIps.Contains(remoteIp);
+        if (blockRequest)
+        {
+            context.Response.StatusCode = 403;
+            await context.Response.WriteAsync("Forbidden");
+            return;
+        }
+    }
+
+    await next();
+});
+
+app.UseElmah();
+
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment())
 {
     app.UseSwagger();
     app.UseSwaggerUI();
+    //app.UseElmahExceptionPage(); // Messes with JSON response for API calls. Leaving this here so I don't accidentally put this in again later on.
 }
 else
 {