fix: OnExceptionCreate as multicast delegate

Author: mt89vein

Sstv.DomainExceptions.Extensions.DependencyInjection/InitHostedService.cs

@@ -15,12 +15,11 @@ internal sealed class InitHostedService : BackgroundService
     /// <param name="configure">User provided configure action.</param>
     public InitHostedService(IServiceProvider sp, Action<IServiceProvider, DomainExceptionSettings>? configure)
     {
-        var instance = DomainExceptionSettings.Instance;
-        configure?.Invoke(sp, instance);
+        configure?.Invoke(sp, DomainExceptionSettings.Instance);
 
-        if (instance.CollectErrorCodesMetricAutomatically)
+        if (DomainExceptionSettings.Instance.CollectErrorCodesMetricAutomatically)
         {
-            instance.OnExceptionCreated = ErrorCodesMeter.Measure;
+            DomainExceptionSettings.Instance.OnExceptionCreated += ErrorCodesMeter.Measure;
         }
 
         DomainExceptionSettings.ErrorDescriptionSourceGetter =

Sstv.DomainExceptions/DomainException.cs

@@ -73,13 +73,12 @@ protected DomainException(
             }
         }
 
-        var instance = DomainExceptionSettings.Instance;
-        if (instance.GenerateExceptionIdAutomatically)
+        if (DomainExceptionSettings.Instance.GenerateExceptionIdAutomatically)
         {
             WithErrorId();
         }
 
-        instance.OnExceptionCreated?.Invoke(this);
+        DomainExceptionSettings.Instance.OnExceptionCreated?.Invoke(this);
     }
 
     /// <summary>

Sstv.Host/Program.cs

@@ -39,6 +39,11 @@
         settings.ErrorCodesDescriptionSource = null;          // manually set your own error description source instance
         settings.DefaultErrorDescriptionProvider =            // override default error description func
             errorCode => new ErrorDescription(errorCode, "N/A"); // default func
+
+        settings.OnExceptionCreated += exception =>
+        {
+            Console.WriteLine(exception.ToString());
+        };
     };
 });