Adds Generic CommandHandlerDecorator

PlanTempus.Components/Users/Create/CommandHandlerDecorator.cs

@@ -0,0 +1,46 @@
+using System.Diagnostics;
+using Microsoft.ApplicationInsights;
+using Microsoft.ApplicationInsights.DataContracts;
+using PlanTempus.Core.CommandQueries;
+
+namespace PlanTempus.Components.Users.Create;
+
+public class CommandHandlerDecorator<TCommand>(
+    ICommandHandler<TCommand> decoratedHandler,
+    TelemetryClient telemetryClient) : ICommandHandler<TCommand>, ICommandHandlerDecorator where TCommand : ICommand
+{
+    public async Task<CommandResponse> Handle(TCommand command)
+    {
+        // var correlationId = Activity.Current?.RootId ?? command.CorrelationId;
+
+        using (var operation =
+               telemetryClient.StartOperation<RequestTelemetry>($"Handle {decoratedHandler.GetType().FullName}",
+                   command.CorrelationId.ToString()))
+        {
+            try
+            {
+                operation.Telemetry.Properties["CorrelationId"] = command.CorrelationId.ToString();
+                operation.Telemetry.Properties["TransactionId"] = command.TransactionId.ToString();
+
+                var result = await decoratedHandler.Handle(command);
+
+                operation.Telemetry.Properties["RequestId"] = result.RequestId.ToString();
+                operation.Telemetry.Success = true;
+
+                return result;
+            }
+            catch (Exception ex)
+            {
+                operation.Telemetry.Success = false;
+
+                telemetryClient.TrackException(ex, new Dictionary<string, string>
+                {
+                    ["CorrelationId"] = command.CorrelationId.ToString(),
+                    ["Command"] = command.GetType().Name,
+                    ["CommandHandler"] = decoratedHandler.GetType().FullName
+                });
+                throw;
+            }
+        }
+    }
+}