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MyNewProjectName.Application/Behaviors/LoggingBehavior.cs

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+using System.Diagnostics;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace MyNewProjectName.Application.Behaviors;
+
+/// <summary>
+/// Logging behavior for MediatR pipeline
+/// </summary>
+public class LoggingBehavior<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : notnull
+{
+    private readonly ILogger<LoggingBehavior<TRequest, TResponse>> _logger;
+
+    public LoggingBehavior(ILogger<LoggingBehavior<TRequest, TResponse>> logger)
+    {
+        _logger = logger;
+    }
+
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        var requestName = typeof(TRequest).Name;
+
+        _logger.LogInformation("Handling {RequestName}", requestName);
+
+        var stopwatch = Stopwatch.StartNew();
+
+        try
+        {
+            var response = await next();
+
+            stopwatch.Stop();
+
+            _logger.LogInformation("Handled {RequestName} in {ElapsedMilliseconds}ms",
+                requestName, stopwatch.ElapsedMilliseconds);
+
+            return response;
+        }
+        catch (Exception ex)
+        {
+            stopwatch.Stop();
+
+            _logger.LogError(ex, "Error handling {RequestName} after {ElapsedMilliseconds}ms",
+                requestName, stopwatch.ElapsedMilliseconds);
+
+            throw;
+        }
+    }
+}