Add controller + action filter logger

Author: andrewlock

SerilogRequestLogging/Controllers/ApiController.cs

@@ -0,0 +1,15 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace SerilogRequestLogging.Controllers
+{
+    [ApiController]
+    public class ApiController
+    {
+        [HttpGet("api")]
+        public string SomeApiMethod()
+        {
+            return "Api called ok";
+        }
+
+    }
+}

SerilogRequestLogging/SerilogLoggingActionFilter.cs

@@ -0,0 +1,24 @@
+using Microsoft.AspNetCore.Mvc.Filters;
+using Serilog;
+
+namespace SerilogRequestLogging
+{
+    public class SerilogLoggingActionFilter : IActionFilter
+    {
+        private readonly IDiagnosticContext _diagnosticContext;
+        public SerilogLoggingActionFilter(IDiagnosticContext diagnosticContext)
+        {
+            _diagnosticContext = diagnosticContext;
+        }
+
+        public void OnActionExecuting(ActionExecutingContext context)
+        {
+            _diagnosticContext.Set("RouteData", context.ActionDescriptor.RouteValues);
+            _diagnosticContext.Set("ActionName", context.ActionDescriptor.DisplayName);
+            _diagnosticContext.Set("ActionId", context.ActionDescriptor.Id);
+            _diagnosticContext.Set("ValidationState", context.ModelState.IsValid);
+        }
+
+        public void OnActionExecuted(ActionExecutedContext context){}
+    }
+}

SerilogRequestLogging/Startup.cs

@@ -24,6 +24,10 @@ public Startup(IConfiguration configuration)
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddControllers(opts =>
+            {
+                opts.Filters.Add<SerilogLoggingActionFilter>();
+            });
             services.AddRazorPages();
         }
 
@@ -53,6 +57,7 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
 
             app.UseEndpoints(endpoints =>
             {
+                endpoints.MapControllers();
                 endpoints.MapRazorPages();
             });
         }