Merge branch 'master' into feature/measure-traffic

# Conflicts:
#	backend/src/Squidex.Web/Pipeline/RequestExceptionMiddleware.cs

backend/extensions/Squidex.Extensions/Actions/Kafka/KafkaProducer.cs

@@ -8,7 +8,6 @@
 using System.Threading.Tasks;
 using Confluent.Kafka;
 using Microsoft.Extensions.Options;
-using Squidex.Infrastructure;
 using Squidex.Infrastructure.Log;
 
 namespace Squidex.Extensions.Actions.Kafka
@@ -65,10 +64,10 @@ namespace Squidex.Extensions.Actions.Kafka
                     break;
             }
 
-            log.Log<None>(level, default, (_, w) => w
-                .WriteProperty("action", "KafkaAction")
-                .WriteProperty("name", message.Name)
-                .WriteProperty("message", message.Message));
+            log.Log(level, null, w => w
+                 .WriteProperty("action", "KafkaAction")
+                 .WriteProperty("name", message.Name)
+                 .WriteProperty("message", message.Message));
         }
 
         private static void LogError(ISemanticLog log, Error error)

backend/src/Squidex.Infrastructure/Log/Adapter/SemanticLogLogger.cs

@@ -49,9 +49,20 @@ namespace Squidex.Infrastructure.Log.Adapter
                     break;
             }
 
+            if (state is IReadOnlyList<KeyValuePair<string, object>> parameters)
+            {
+                foreach (var (key, value) in parameters)
+                {
+                    if (value is Exception ex && exception == null)
+                    {
+                        exception = ex;
+                    }
+                }
+            }
+
             var context = (eventId, state, exception, formatter);
 
-            semanticLog.Log(semanticLogLevel, context, (ctx, writer) =>
+            semanticLog.Log(semanticLogLevel, context, exception, (ctx, writer) =>
             {
                 var message = ctx.formatter(ctx.state, ctx.exception);
 
@@ -73,26 +84,23 @@ namespace Squidex.Infrastructure.Log.Adapter
                     });
                 }
 
-                if (ctx.state is IReadOnlyList<KeyValuePair<string, object>> parameters)
+                if (ctx.state is IReadOnlyList<KeyValuePair<string, object>> parameters2)
                 {
-                    foreach (var (key, value) in parameters)
+                    foreach (var (key, value) in parameters2)
                     {
                         if (value != null)
                         {
                             var trimmedName = key.Trim('{', '}', ' ');
 
-                            if (trimmedName.Length > 2 && !string.Equals(trimmedName, "originalFormat", StringComparison.OrdinalIgnoreCase))
+                            if (trimmedName.Length > 2 &&
+                                !string.Equals(trimmedName, "exception", StringComparison.OrdinalIgnoreCase) &&
+                                !string.Equals(trimmedName, "originalFormat", StringComparison.OrdinalIgnoreCase))
                             {
                                 writer.WriteProperty(trimmedName.ToCamelCase(), value.ToString());
                             }
                         }
                     }
                 }
-
-                if (ctx.exception != null)
-                {
-                    writer.WriteException(ctx.exception);
-                }
             });
         }
 

backend/src/Squidex.Infrastructure/Log/ApplicationInfoLogAppender.cs

@@ -30,7 +30,7 @@ namespace Squidex.Infrastructure.Log
             applicationSessionId = applicationSession.ToString();
         }
 
-        public void Append(IObjectWriter writer, SemanticLogLevel logLevel)
+        public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception)
         {
             writer.WriteObject("app", w => w
                 .WriteProperty("name", applicationName)

backend/src/Squidex.Infrastructure/Log/ConstantsLogWriter.cs

@@ -20,7 +20,7 @@ namespace Squidex.Infrastructure.Log
             this.objectWriter = objectWriter;
         }
 
-        public void Append(IObjectWriter writer, SemanticLogLevel logLevel)
+        public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception)
         {
             objectWriter(writer);
         }

backend/src/Squidex.Infrastructure/Log/ILogAppender.cs

@@ -5,10 +5,12 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
+
 namespace Squidex.Infrastructure.Log
 {
     public interface ILogAppender
     {
-        void Append(IObjectWriter writer, SemanticLogLevel logLevel);
+        void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception);
     }
 }

backend/src/Squidex.Infrastructure/Log/ISemanticLog.cs

@@ -9,9 +9,15 @@ using System;
 
 namespace Squidex.Infrastructure.Log
 {
+    public delegate void LogFormatter(IObjectWriter writer);
+
+    public delegate void LogFormatter<T>(T context, IObjectWriter writer);
+
     public interface ISemanticLog
     {
-        void Log<T>(SemanticLogLevel logLevel, T context, Action<T, IObjectWriter> action);
+        void Log<T>(SemanticLogLevel logLevel, T context, Exception? exception, LogFormatter<T> action);
+
+        void Log(SemanticLogLevel logLevel, Exception? exception, LogFormatter action);
 
         ISemanticLog CreateScope(Action<IObjectWriter> objectWriter);
     }

backend/src/Squidex.Infrastructure/Log/SemanticLog.cs

@@ -30,13 +30,13 @@ namespace Squidex.Infrastructure.Log
             Guard.NotNull(appenders);
             Guard.NotNull(writerFactory);
 
+            this.options = options;
             this.channels = channels.ToArray();
             this.appenders = appenders.ToArray();
-            this.options = options;
             this.writerFactory = writerFactory;
         }
 
-        public void Log<T>(SemanticLogLevel logLevel, T context, Action<T, IObjectWriter> action)
+        public void Log<T>(SemanticLogLevel logLevel, T context, Exception? exception, LogFormatter<T> action)
         {
             Guard.NotNull(action);
 
@@ -45,7 +45,21 @@ namespace Squidex.Infrastructure.Log
                 return;
             }
 
-            var formattedText = FormatText(logLevel, context, action);
+            var formattedText = FormatText(logLevel, context, exception, action);
+
+            LogFormattedText(logLevel, formattedText);
+        }
+
+        public void Log(SemanticLogLevel logLevel, Exception? exception, LogFormatter action)
+        {
+            Guard.NotNull(action);
+
+            if (logLevel < options.Value.Level)
+            {
+                return;
+            }
+
+            var formattedText = FormatText(logLevel, exception, action);
 
             LogFormattedText(logLevel, formattedText);
         }
@@ -77,7 +91,7 @@ namespace Squidex.Infrastructure.Log
             }
         }
 
-        private string FormatText<T>(SemanticLogLevel logLevel, T context, Action<T, IObjectWriter> objectWriter)
+        private string FormatText(SemanticLogLevel logLevel, Exception? exception, LogFormatter action)
         {
             var writer = writerFactory.Create();
 
@@ -85,13 +99,40 @@ namespace Squidex.Infrastructure.Log
             {
                 writer.WriteProperty(nameof(logLevel), logLevel.ToString());
 
-                objectWriter(context, writer);
+                action(writer);
 
                 for (var i = 0; i < appenders.Length; i++)
                 {
-                    appenders[i].Append(writer, logLevel);
+                    appenders[i].Append(writer, logLevel, exception);
                 }
 
+                writer.WriteException(exception);
+
+                return writer.ToString();
+            }
+            finally
+            {
+                writerFactory.Release(writer);
+            }
+        }
+
+        private string FormatText<T>(SemanticLogLevel logLevel, T context, Exception? exception, LogFormatter<T> action)
+        {
+            var writer = writerFactory.Create();
+
+            try
+            {
+                writer.WriteProperty(nameof(logLevel), logLevel.ToString());
+
+                action(context, writer);
+
+                for (var i = 0; i < appenders.Length; i++)
+                {
+                    appenders[i].Append(writer, logLevel, exception);
+                }
+
+                writer.WriteException(exception);
+
                 return writer.ToString();
             }
             finally
@@ -102,7 +143,9 @@ namespace Squidex.Infrastructure.Log
 
         public ISemanticLog CreateScope(Action<IObjectWriter> objectWriter)
         {
-            return new SemanticLog(options, channels, appenders.Union(new ILogAppender[] { new ConstantsLogWriter(objectWriter) }).ToArray(), writerFactory);
+            var newAppenders = appenders.Union(Enumerable.Repeat(new ConstantsLogWriter(objectWriter), 1));
+
+            return new SemanticLog(options, channels, newAppenders, writerFactory);
         }
     }
 }

backend/src/Squidex.Infrastructure/Log/SemanticLogExtensions.cs

@@ -11,114 +11,94 @@ namespace Squidex.Infrastructure.Log
 {
     public static class SemanticLogExtensions
     {
-        public static void LogTrace(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogTrace(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Trace, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Trace, null, action);
         }
 
-        public static void LogTrace<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogTrace<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Trace, context, objectWriter);
+            log.Log(SemanticLogLevel.Trace, context, null, action);
         }
 
-        public static void LogDebug(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogDebug(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Debug, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Debug, null, action);
         }
 
-        public static void LogDebug<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogDebug<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Debug, context, objectWriter);
+            log.Log(SemanticLogLevel.Debug, context, null, action);
         }
 
-        public static void LogInformation(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogInformation(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Information, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Information, null, action);
         }
 
-        public static void LogInformation<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogInformation<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Information, context, objectWriter);
+            log.Log(SemanticLogLevel.Information, context, null, action);
         }
 
-        public static void LogWarning(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogWarning(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Warning, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Warning, null, action);
         }
 
-        public static void LogWarning<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogWarning<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Warning, context, objectWriter);
+            log.Log(SemanticLogLevel.Warning, context, null, action);
         }
 
-        public static void LogWarning(this ISemanticLog log, Exception exception, Action<IObjectWriter>? objectWriter = null)
+        public static void LogWarning(this ISemanticLog log, Exception exception, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Warning, None.Value, (_, w) => w.WriteException(exception, objectWriter));
+            log.Log(SemanticLogLevel.Warning, exception, action);
         }
 
-        public static void LogWarning<T>(this ISemanticLog log, Exception exception, T context, Action<T, IObjectWriter>? objectWriter = null)
+        public static void LogWarning<T>(this ISemanticLog log, Exception exception, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Warning, context, (ctx, w) => w.WriteException(exception, ctx, objectWriter));
+            log.Log(SemanticLogLevel.Warning, context, exception, action);
         }
 
-        public static void LogError(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogError(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Error, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Error, null, action);
         }
 
-        public static void LogError<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogError<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Error, context, objectWriter);
+            log.Log(SemanticLogLevel.Error, context, null, action);
         }
 
-        public static void LogError(this ISemanticLog log, Exception exception, Action<IObjectWriter>? objectWriter = null)
+        public static void LogError(this ISemanticLog log, Exception exception, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Error, None.Value, (_, w) => w.WriteException(exception, objectWriter));
+            log.Log(SemanticLogLevel.Error, exception, action);
         }
 
-        public static void LogError<T>(this ISemanticLog log, Exception exception, T context, Action<T, IObjectWriter>? objectWriter = null)
+        public static void LogError<T>(this ISemanticLog log, Exception exception, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Error, context, (ctx, w) => w.WriteException(exception, ctx, objectWriter));
+            log.Log(SemanticLogLevel.Error, context, exception, action);
         }
 
-        public static void LogFatal(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static void LogFatal(this ISemanticLog log, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Fatal, None.Value, (_, w) => objectWriter(w));
+            log.Log(SemanticLogLevel.Fatal, null, action);
         }
 
-        public static void LogFatal<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static void LogFatal<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Fatal, context, objectWriter);
+            log.Log(SemanticLogLevel.Fatal, context, null, action);
         }
 
-        public static void LogFatal(this ISemanticLog log, Exception? exception, Action<IObjectWriter>? objectWriter = null)
+        public static void LogFatal(this ISemanticLog log, Exception? exception, LogFormatter action)
         {
-            log.Log(SemanticLogLevel.Fatal, None.Value, (_, w) => w.WriteException(exception, objectWriter));
+            log.Log(SemanticLogLevel.Fatal, exception, action);
         }
 
-        public static void LogFatal<T>(this ISemanticLog log, Exception? exception, T context, Action<T, IObjectWriter>? objectWriter = null)
+        public static void LogFatal<T>(this ISemanticLog log, Exception? exception, T context, LogFormatter<T> action)
         {
-            log.Log(SemanticLogLevel.Fatal, context, (ctx, w) => w.WriteException(exception, ctx, objectWriter));
-        }
-
-        private static void WriteException(this IObjectWriter writer, Exception? exception, Action<IObjectWriter>? objectWriter)
-        {
-            objectWriter?.Invoke(writer);
-
-            if (exception != null)
-            {
-                writer.WriteException(exception);
-            }
-        }
-
-        private static void WriteException<T>(this IObjectWriter writer, Exception? exception, T context, Action<T, IObjectWriter>? objectWriter)
-        {
-            objectWriter?.Invoke(context, writer);
-
-            if (exception != null)
-            {
-                writer.WriteException(exception);
-            }
+            log.Log(SemanticLogLevel.Fatal, context, exception, action);
         }
 
         public static IObjectWriter WriteException(this IObjectWriter writer, Exception? exception)
@@ -144,37 +124,37 @@ namespace Squidex.Infrastructure.Log
             });
         }
 
-        public static IDisposable MeasureTrace(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static IDisposable MeasureTrace(this ISemanticLog log, LogFormatter action)
         {
-            return log.Measure(SemanticLogLevel.Trace, None.Value, (_, w) => objectWriter(w));
+            return log.Measure(SemanticLogLevel.Trace, None.Value, (_, w) => action(w));
         }
 
-        public static IDisposable MeasureTrace<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static IDisposable MeasureTrace<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            return log.Measure(SemanticLogLevel.Trace, context, objectWriter);
+            return log.Measure(SemanticLogLevel.Trace, context, action);
         }
 
-        public static IDisposable MeasureDebug(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static IDisposable MeasureDebug(this ISemanticLog log, LogFormatter action)
         {
-            return log.Measure(SemanticLogLevel.Debug, None.Value, (_, w) => objectWriter(w));
+            return log.Measure(SemanticLogLevel.Debug, None.Value, (_, w) => action(w));
         }
 
-        public static IDisposable MeasureDebug<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static IDisposable MeasureDebug<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            return log.Measure(SemanticLogLevel.Debug, context, objectWriter);
+            return log.Measure(SemanticLogLevel.Debug, context, action);
         }
 
-        public static IDisposable MeasureInformation(this ISemanticLog log, Action<IObjectWriter> objectWriter)
+        public static IDisposable MeasureInformation(this ISemanticLog log, LogFormatter action)
         {
-            return log.Measure(SemanticLogLevel.Information, None.Value, (_, w) => objectWriter(w));
+            return log.Measure(SemanticLogLevel.Information, None.Value, (_, w) => action(w));
         }
 
-        public static IDisposable MeasureInformation<T>(this ISemanticLog log, T context, Action<T, IObjectWriter> objectWriter)
+        public static IDisposable MeasureInformation<T>(this ISemanticLog log, T context, LogFormatter<T> action)
         {
-            return log.Measure(SemanticLogLevel.Information, context, objectWriter);
+            return log.Measure(SemanticLogLevel.Information, context, action);
         }
 
-        private static IDisposable Measure<T>(this ISemanticLog log, SemanticLogLevel logLevel, T context, Action<T, IObjectWriter> objectWriter)
+        private static IDisposable Measure<T>(this ISemanticLog log, SemanticLogLevel logLevel, T context, LogFormatter<T> action)
         {
             var watch = ValueStopwatch.StartNew();
 
@@ -182,9 +162,9 @@ namespace Squidex.Infrastructure.Log
             {
                 var elapsedMs = watch.Stop();
 
-                log.Log(logLevel, (Context: context, elapsedMs), (ctx, w) =>
+                log.Log(logLevel, (Context: context, elapsedMs), null, (ctx, w) =>
                 {
-                    objectWriter?.Invoke(ctx.Context, w);
+                    action?.Invoke(ctx.Context, w);
 
                     w.WriteProperty("elapsedMs", elapsedMs);
                 });

backend/src/Squidex.Infrastructure/Log/TimestampLogAppender.cs

@@ -5,6 +5,7 @@
 //  All rights reserved. Licensed under the MIT license.
 // ==========================================================================
 
+using System;
 using NodaTime;
 
 namespace Squidex.Infrastructure.Log
@@ -18,7 +19,7 @@ namespace Squidex.Infrastructure.Log
             this.clock = clock ?? SystemClock.Instance;
         }
 
-        public void Append(IObjectWriter writer, SemanticLogLevel logLevel)
+        public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception)
         {
             writer.WriteProperty("timestamp", clock.GetCurrentInstant());
         }

backend/src/Squidex.Web/ApiExceptionFilterAttribute.cs

@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Filters;
 using Microsoft.Extensions.DependencyInjection;
-using Squidex.Web.Pipeline;
+using Squidex.Infrastructure.Log;
 
 namespace Squidex.Web
 {
@@ -33,9 +33,9 @@ namespace Squidex.Web
 
             if (!wellKnown)
             {
-                var exceptionHandler = context.HttpContext.RequestServices.GetService<IExceptionHandler>();
+                var log = context.HttpContext.RequestServices.GetService<ISemanticLog>();
 
-                exceptionHandler.Handle(context.Exception, context.HttpContext);
+                log.LogError(context.Exception, w => w.WriteProperty("messag", "An unexpected exception has occurred."));
             }
 
             context.Result = GetResult(error);

backend/src/Squidex.Web/Pipeline/ActionContextLogAppender.cs

@@ -29,7 +29,7 @@ namespace Squidex.Web.Pipeline
             this.httpContextAccessor = httpContextAccessor;
         }
 
-        public void Append(IObjectWriter writer, SemanticLogLevel logLevel)
+        public void Append(IObjectWriter writer, SemanticLogLevel logLevel, Exception? exception)
         {
             var httpContext = httpContextAccessor.HttpContext;
 

backend/src/Squidex.Web/Pipeline/DefaultExceptionHandler.cs

@@ -1,31 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschraenkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using System;
-using Microsoft.AspNetCore.Http;
-using Squidex.Infrastructure;
-using Squidex.Infrastructure.Log;
-
-namespace Squidex.Web.Pipeline
-{
-    public class DefaultExceptionHandler : IExceptionHandler
-    {
-        private readonly ISemanticLog log;
-
-        public DefaultExceptionHandler(ISemanticLog log)
-        {
-            Guard.NotNull(log);
-
-            this.log = log;
-        }
-
-        public virtual void Handle(Exception exception, HttpContext? httpContext = null)
-        {
-            log.LogError(exception, w => w.WriteProperty("status", "UnhandledException"));
-        }
-    }
-}

backend/src/Squidex.Web/Pipeline/IExceptionHandler.cs

@@ -1,17 +0,0 @@
-// ==========================================================================
-//  Squidex Headless CMS
-// ==========================================================================
-//  Copyright (c) Squidex UG (haftungsbeschraenkt)
-//  All rights reserved. Licensed under the MIT license.
-// ==========================================================================
-
-using System;
-using Microsoft.AspNetCore.Http;
-
-namespace Squidex.Web.Pipeline
-{
-    public interface IExceptionHandler
-    {
-        void Handle(Exception exception, HttpContext? httpContext = null);
-    }
-}

backend/src/Squidex.Web/Pipeline/RequestExceptionMiddleware.cs

@@ -9,18 +9,19 @@ using System;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Log;
 
 namespace Squidex.Web.Pipeline
 {
     public sealed class RequestExceptionMiddleware : IMiddleware
     {
-        private readonly IExceptionHandler exceptionHandler;
+        private readonly ISemanticLog log;
 
-        public RequestExceptionMiddleware(IExceptionHandler exceptionHandler)
+        public RequestExceptionMiddleware(ISemanticLog log)
         {
-            Guard.NotNull(exceptionHandler);
+            Guard.NotNull(log);
 
-            this.exceptionHandler = exceptionHandler;
+            this.log = log;
         }
 
         public async Task InvokeAsync(HttpContext context, RequestDelegate next)
@@ -31,7 +32,7 @@ namespace Squidex.Web.Pipeline
             }
             catch (Exception ex)
             {
-                exceptionHandler.Handle(ex, context);
+                log.LogError(ex, w => w.WriteProperty("messag", "An unexpected exception has occurred."));
 
                 context.Response.StatusCode = 500;
             }

backend/src/Squidex/Config/Web/WebServices.cs

@@ -67,9 +67,6 @@ namespace Squidex.Config.Web
             services.AddSingletonAs<ActionContextAccessor>()
                 .As<IActionContextAccessor>();
 
-            services.AddSingletonAs<DefaultExceptionHandler>()
-                .AsOptional<IExceptionHandler>();
-
             services.Configure<ApiBehaviorOptions>(options =>
             {
                 options.SuppressModelStateInvalidFilter = true;

backend/tests/Squidex.Domain.Apps.Entities.Tests/Apps/Invitation/Notifications/NotificationEmailEventConsumerTests.cs

@@ -153,7 +153,7 @@ namespace Squidex.Domain.Apps.Entities.Apps.Invitation.Notifications
 
         private void MustLogWarning()
         {
-            A.CallTo(() => log.Log(SemanticLogLevel.Warning, A<None>._, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
 

backend/tests/Squidex.Domain.Apps.Entities.Tests/Apps/Invitation/Notifications/NotificationEmailSenderTests.cs

@@ -11,7 +11,6 @@ using System.Security.Claims;
 using System.Threading.Tasks;
 using FakeItEasy;
 using Microsoft.Extensions.Options;
-using Squidex.Infrastructure;
 using Squidex.Infrastructure.Email;
 using Squidex.Infrastructure.Log;
 using Squidex.Shared.Identity;
@@ -137,7 +136,7 @@ namespace Squidex.Domain.Apps.Entities.Apps.Invitation.Notifications
 
         private void MustLogWarning()
         {
-            A.CallTo(() => log.Log(SemanticLogLevel.Warning, A<None>._, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
     }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Assets/RecursiveDeleterTests.cs

@@ -103,7 +103,7 @@ namespace Squidex.Domain.Apps.Entities.Assets
             A.CallTo(() => commandBus.PublishAsync(A<DeleteAsset>.That.Matches(x => x.AssetId == childId2)))
                 .MustHaveHappened();
 
-            A.CallTo(() => log.Log(SemanticLogLevel.Error, None.Value, A<Action<None, IObjectWriter>>.Ignored))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
     }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Rules/RuleDequeuerTests.cs

@@ -53,7 +53,7 @@ namespace Squidex.Domain.Apps.Entities.Rules
 
             await sut.QueryAsync();
 
-            A.CallTo(() => log.Log(SemanticLogLevel.Error, None.Value, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
 
@@ -67,7 +67,7 @@ namespace Squidex.Domain.Apps.Entities.Rules
 
             await sut.HandleAsync(@event);
 
-            A.CallTo(() => log.Log(SemanticLogLevel.Error, None.Value, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
 

backend/tests/Squidex.Domain.Apps.Entities.Tests/Search/SearchManagerTests.cs

@@ -94,7 +94,7 @@ namespace Squidex.Domain.Apps.Entities.Search
 
             result.Should().BeEquivalentTo(result2);
 
-            A.CallTo(() => log.Log(SemanticLogLevel.Error, query, A<Action<string, IObjectWriter>>._))
+            A.CallTo(() => log.Log<string>(A<SemanticLogLevel>._, A<string>._, A<Exception?>._, A<LogFormatter<string>>._!))
                 .MustHaveHappened();
         }
     }

backend/tests/Squidex.Infrastructure.Tests/Commands/LogCommandMiddlewareTests.cs

@@ -25,7 +25,12 @@ namespace Squidex.Infrastructure.Commands
         {
             public Dictionary<SemanticLogLevel, int> LogLevels { get; } = new Dictionary<SemanticLogLevel, int>();
 
-            public void Log<T>(SemanticLogLevel logLevel, T context, Action<T, IObjectWriter> action)
+            public void Log<T>(SemanticLogLevel logLevel, T context, Exception? exception, LogFormatter<T> action)
+            {
+                LogLevels[logLevel] = LogLevels.GetOrDefault(logLevel) + 1;
+            }
+
+            public void Log(SemanticLogLevel logLevel, Exception? exception, LogFormatter action)
             {
                 LogLevels[logLevel] = LogLevels.GetOrDefault(logLevel) + 1;
             }

backend/tests/Squidex.Infrastructure.Tests/Log/SemanticLogAdapterTests.cs

@@ -126,14 +126,33 @@ namespace Squidex.Infrastructure.Log
 
             var logger = sut.CreateLogger("my-category");
 
-            logger.Log(LogLevel.Debug, new EventId(0), 1, exception, (x, e) => "my-message");
+            logger.Log(LogLevel.Debug, new EventId(0), exception, "my-message");
 
             var expected =
                 MakeTestCall(w => w
                     .WriteProperty("logLevel", "Debug")
                     .WriteProperty("message", "my-message")
-                    .WriteException(exception)
-                    .WriteProperty("category", "my-category"));
+                    .WriteProperty("category", "my-category")
+                    .WriteException(exception));
+
+            Assert.Equal(expected, output);
+        }
+
+        [Fact]
+        public void Should_log_message_with_integrated_exception()
+        {
+            var exception = new InvalidOperationException();
+
+            var logger = sut.CreateLogger("my-category");
+
+            logger.Log(LogLevel.Debug, new EventId(0), "exception: {exception}", exception);
+
+            var expected =
+                MakeTestCall(w => w
+                    .WriteProperty("logLevel", "Debug")
+                    .WriteProperty("message", $"exception: {exception}")
+                    .WriteProperty("category", "my-category")
+                    .WriteException(exception));
 
             Assert.Equal(expected, output);
         }

backend/tests/Squidex.Infrastructure.Tests/Log/SemanticLogTests.cs

@@ -49,8 +49,8 @@ namespace Squidex.Infrastructure.Log
         [Fact]
         public void Should_log_multiple_lines()
         {
-            Log.Log(SemanticLogLevel.Error, None.Value, (_, w) => w.WriteProperty("logMessage", "Msg1"));
-            Log.Log(SemanticLogLevel.Error, None.Value, (_, w) => w.WriteProperty("logMessage", "Msg2"));
+            Log.Log(SemanticLogLevel.Error, null, w => w.WriteProperty("logMessage", "Msg1"));
+            Log.Log(SemanticLogLevel.Error, null, w => w.WriteProperty("logMessage", "Msg2"));
 
             var expected1 =
                 LogTest(w => w
@@ -229,7 +229,7 @@ namespace Squidex.Infrastructure.Log
         {
             var exception = new InvalidOperationException();
 
-            Log.LogWarning(exception);
+            Log.LogWarning(exception, w => { });
 
             var expected =
                 LogTest(w => w
@@ -286,7 +286,7 @@ namespace Squidex.Infrastructure.Log
         {
             var exception = new InvalidOperationException();
 
-            Log.LogError(exception);
+            Log.LogError(exception, w => { });
 
             var expected =
                 LogTest(w => w
@@ -343,7 +343,7 @@ namespace Squidex.Infrastructure.Log
         {
             var exception = new InvalidOperationException();
 
-            Log.LogFatal(exception);
+            Log.LogFatal(exception, w => { });
 
             var expected =
                 LogTest(w => w
@@ -369,18 +369,6 @@ namespace Squidex.Infrastructure.Log
             Assert.Equal(expected, output);
         }
 
-        [Fact]
-        public void Should_log_nothing_when_exception_is_null()
-        {
-            Log.LogFatal((Exception?)null);
-
-            var expected =
-                LogTest(w => w
-                    .WriteProperty("logLevel", "Fatal"));
-
-            Assert.Equal(expected, output);
-        }
-
         [Fact]
         public void Should_measure_trace()
         {
@@ -484,8 +472,8 @@ namespace Squidex.Infrastructure.Log
                     .WriteObject("eventId", e => e
                         .WriteProperty("id", 123)
                         .WriteProperty("name", "EventName"))
-                    .WriteException(exception)
-                    .WriteProperty("category", "Squidex.Infrastructure.Log.SemanticLogTests"));
+                    .WriteProperty("category", "Squidex.Infrastructure.Log.SemanticLogTests")
+                    .WriteException(exception));
 
             Assert.Equal(expected, output);
         }
@@ -506,7 +494,7 @@ namespace Squidex.Infrastructure.Log
 
             try
             {
-                sut.Log(SemanticLogLevel.Debug, None.Value, (_, w) => w.WriteProperty("should", "throw"));
+                sut.Log(SemanticLogLevel.Debug, null, w => w.WriteProperty("should", "throw"));
 
                 Assert.False(true);
             }

backend/tests/Squidex.Infrastructure.Tests/Migrations/MigratorTests.cs

@@ -131,7 +131,7 @@ namespace Squidex.Infrastructure.Migrations
 
             await Assert.ThrowsAsync<MigrationFailedException>(() => sut.MigrateAsync());
 
-            A.CallTo(() => log.Log(SemanticLogLevel.Fatal, None.Value, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(SemanticLogLevel.Fatal, ex, A<LogFormatter>._!))
                 .MustHaveHappened();
 
             A.CallTo(() => migrator_1_2.UpdateAsync())

backend/tests/Squidex.Infrastructure.Tests/Orleans/LoggingFilterTests.cs

@@ -31,7 +31,7 @@ namespace Squidex.Infrastructure.Orleans
         {
             await sut.Invoke(context);
 
-            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<None>._, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -43,7 +43,7 @@ namespace Squidex.Infrastructure.Orleans
 
             await Assert.ThrowsAsync<ValidationException>(() => sut.Invoke(context));
 
-            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<None>._, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -55,7 +55,7 @@ namespace Squidex.Infrastructure.Orleans
 
             await Assert.ThrowsAsync<InvalidOperationException>(() => sut.Invoke(context));
 
-            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<None>._, A<Action<None, IObjectWriter>>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
     }

backend/tests/Squidex.Web.Tests/ApiExceptionFilterAttributeTests.cs

@@ -17,15 +17,15 @@ using Microsoft.AspNetCore.Mvc.Abstractions;
 using Microsoft.AspNetCore.Mvc.Filters;
 using Microsoft.AspNetCore.Routing;
 using Squidex.Infrastructure;
+using Squidex.Infrastructure.Log;
 using Squidex.Infrastructure.Validation;
-using Squidex.Web.Pipeline;
 using Xunit;
 
 namespace Squidex.Web
 {
     public class ApiExceptionFilterAttributeTests
     {
-        private readonly IExceptionHandler exceptionHandler = A.Fake<IExceptionHandler>();
+        private readonly ISemanticLog log = A.Fake<ISemanticLog>();
         private readonly ApiExceptionFilterAttribute sut = new ApiExceptionFilterAttribute();
 
         [Fact]
@@ -49,7 +49,7 @@ namespace Squidex.Web
 
             Assert.Equal(new[] { "Error1", "P: Error2", "P1, P2: Error3" }, ((ErrorDto)result.Value).Details);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -62,7 +62,7 @@ namespace Squidex.Web
 
             Assert.IsType<NotFoundResult>(context.Result);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -75,7 +75,7 @@ namespace Squidex.Web
 
             Validate(500, context.Result, null);
 
-            A.CallTo(() => exceptionHandler.Handle(context.Exception, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, context.Exception, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
 
@@ -88,7 +88,7 @@ namespace Squidex.Web
 
             Validate(400, context.Result, context.Exception);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -101,7 +101,7 @@ namespace Squidex.Web
 
             Validate(400, context.Result, context.Exception);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -114,7 +114,7 @@ namespace Squidex.Web
 
             Validate(412, context.Result, context.Exception);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -127,7 +127,7 @@ namespace Squidex.Web
 
             Validate(403, context.Result, context.Exception);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -140,7 +140,7 @@ namespace Squidex.Web
 
             Validate(403, context.Result, null);
 
-            A.CallTo(() => exceptionHandler.Handle(context.Exception, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, context.Exception, A<LogFormatter>._!))
                 .MustHaveHappened();
         }
 
@@ -153,7 +153,7 @@ namespace Squidex.Web
 
             Validate(403, context.Result, null);
 
-            A.CallTo(() => exceptionHandler.Handle(A<Exception>._, A<HttpContext>._))
+            A.CallTo(() => log.Log(A<SemanticLogLevel>._, A<Exception?>._, A<LogFormatter>._!))
                 .MustNotHaveHappened();
         }
 
@@ -189,8 +189,8 @@ namespace Squidex.Web
         {
             var services = A.Fake<IServiceProvider>();
 
-            A.CallTo(() => services.GetService(typeof(IExceptionHandler)))
-                .Returns(exceptionHandler);
+            A.CallTo(() => services.GetService(typeof(ISemanticLog)))
+                .Returns(log);
 
             var httpContext = new DefaultHttpContext
             {