Added logging.

JSMR.Api/JSMR.Api.csproj

@@ -9,6 +9,10 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.10" />
+    <PackageReference Include="Serilog" Version="4.3.0" />
+    <PackageReference Include="Serilog.AspNetCore" Version="9.0.0" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="9.0.0" />
+    <PackageReference Include="Serilog.Sinks.Seq" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>

JSMR.Api/Program.cs

@@ -7,6 +7,9 @@ using JSMR.Infrastructure.Data;
 using JSMR.Infrastructure.DI;
 using Microsoft.AspNetCore.Http.Json;
 using Microsoft.EntityFrameworkCore;
+using Serilog;
+using Serilog.Events;
+using System.Diagnostics;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
@@ -37,6 +40,15 @@ builder.Services.Configure<JsonOptions>(options =>
         new JsonStringEnumConverter(JsonNamingPolicy.CamelCase)); // or null for exact names
 });
 
+// Serilog bootstrap (before Build)
+Log.Logger = new LoggerConfiguration()
+    .ReadFrom.Configuration(builder.Configuration)
+    .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
+    .Enrich.WithProperty("Service", "JSMR.Api")
+    .Enrich.WithProperty("Environment", builder.Environment.EnvironmentName)
+    .CreateLogger();
+builder.Host.UseSerilog();
+
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
@@ -51,6 +63,25 @@ app.UseAuthorization();
 
 app.MapControllers();
 
+// Request logging with latency, status, path
+app.UseSerilogRequestLogging(opts =>
+{
+    opts.MessageTemplate = "HTTP {RequestMethod} {RequestPath} responded {StatusCode} in {Elapsed:0.0000} ms";
+});
+
+// Correlation: ensure every log has traceId and return it to clients
+app.Use(async (ctx, next) =>
+{
+    // Use current Activity if present (W3C trace context), else fall back
+    var traceId = Activity.Current?.TraceId.ToString() ?? ctx.TraceIdentifier;
+    using (Serilog.Context.LogContext.PushProperty("TraceId", traceId))
+    {
+        ctx.Response.Headers["x-trace-id"] = traceId;
+        await next();
+    }
+});
+
+
 // Health check
 app.MapGet("/health", () => Results.Ok(new { status = "ok" }));
 
@@ -62,9 +93,16 @@ app.MapPost("/api/circles/search", async (
     SearchCirclesHandler handler,
     CancellationToken cancallationToken) =>
 {
-    var result = await handler.HandleAsync(request, cancallationToken);
+    try
+    {
+        SearchCirclesResponse result = await handler.HandleAsync(request, cancallationToken);
 
-    return Results.Ok(result);
+        return Results.Ok(result);
+    }
+    catch (OperationCanceledException) when (cancallationToken.IsCancellationRequested)
+    {
+        return Results.StatusCode(StatusCodes.Status499ClientClosedRequest);
+    }
 });
 
 // Voice Works Search

JSMR.Api/Properties/launchSettings.json

@@ -7,7 +7,8 @@
       "launchBrowser": false,
       "applicationUrl": "http://localhost:5226",
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "SEQ_URL": "http://localhost:5341"
       }
     },
     "https": {
@@ -16,7 +17,8 @@
       "launchBrowser": false,
       "applicationUrl": "https://localhost:7277;http://localhost:5226",
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "SEQ_URL": "http://localhost:5341"
       }
     }
   }

JSMR.Api/appsettings.json

@@ -5,5 +5,22 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "Serilog": {
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "System": "Warning"
+      }
+    },
+    "Enrich": [ "FromLogContext", "WithMachineName", "WithProcessId", "WithThreadId" ],
+    "WriteTo": [
+      { "Name": "Console" },
+      {
+        "Name": "Seq",
+        "Args": { "serverUrl": "%SEQ_URL%" }
+      }
+    ]
+  }
 }