Merge pull request #3334 from abpframework/exception-notification

Implemented: Allow to subscribe to exceptions handled by the abp framework

docs/en/Exception-Handling.md

@@ -291,6 +291,26 @@ services.Configure<AbpExceptionHttpStatusCodeOptions>(options =>
 });
 ````
 
+## Subscribing to the Exceptions
+
+It is possible to be informed when the ABP Framework **handles an exception**. It automatically **logs** all the exceptions to the standard [logger](Logging.md), but you may want to do more.
+
+In this case, create a class derived from the `ExceptionSubscriber` class in your application:
+
+````csharp
+public class MyExceptionSubscriber : ExceptionSubscriber
+{
+    public override async Task HandleAsync(ExceptionNotificationContext context)
+    {
+        //TODO...
+    }
+}
+````
+
+The `context` object contains necessary information about the exception occurred.
+
+> You can have multiple subscribers, each gets a copy of the exception. Exceptions thrown by your subscriber is ignored (but still logged).
+
 ## Built-In Exceptions
 
 Some exception types are automatically thrown by the framework:

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/Controllers/ErrorController.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Localization.Resources.AbpUi;
 using Microsoft.AspNetCore.Diagnostics;
 using Microsoft.AspNetCore.Mvc;
@@ -7,6 +8,7 @@ using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Options;
 using Volo.Abp.AspNetCore.ExceptionHandling;
 using Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared.Views.Error;
+using Volo.Abp.ExceptionHandling;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared.Controllers
 {
@@ -16,20 +18,23 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared.Controllers
         private readonly IHttpExceptionStatusCodeFinder _statusCodeFinder;
         private readonly IStringLocalizer<AbpUiResource> _localizer;
         private readonly AbpErrorPageOptions _abpErrorPageOptions;
+        private readonly IExceptionNotifier _exceptionNotifier;
 
         public ErrorController(
             IExceptionToErrorInfoConverter exceptionToErrorInfoConverter,
             IHttpExceptionStatusCodeFinder httpExceptionStatusCodeFinder,
             IOptions<AbpErrorPageOptions> abpErrorPageOptions,
-            IStringLocalizer<AbpUiResource> localizer)
+            IStringLocalizer<AbpUiResource> localizer, 
+            IExceptionNotifier exceptionNotifier)
         {
             _errorInfoConverter = exceptionToErrorInfoConverter;
             _statusCodeFinder = httpExceptionStatusCodeFinder;
             _localizer = localizer;
+            _exceptionNotifier = exceptionNotifier;
             _abpErrorPageOptions = abpErrorPageOptions.Value;
         }
 
-        public IActionResult Index(int httpStatusCode)
+        public async Task<IActionResult> Index(int httpStatusCode)
         {
             var exHandlerFeature = HttpContext.Features.Get<IExceptionHandlerFeature>();
 
@@ -37,6 +42,8 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared.Controllers
                 ? exHandlerFeature.Error
                 : new Exception(_localizer["UnhandledException"]);
 
+            await _exceptionNotifier.NotifyAsync(new ExceptionNotificationContext(exception));
+
             var errorInfo = _errorInfoConverter.Convert(exception);
 
             if (httpStatusCode == 0)

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs

@@ -1,18 +1,21 @@
 using System;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Abstractions;
 using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Volo.Abp.AspNetCore.ExceptionHandling;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Http;
 using Volo.Abp.Json;
 
 namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
 {
-    public class AbpExceptionFilter : IExceptionFilter, ITransientDependency
+    public class AbpExceptionFilter : IAsyncExceptionFilter, ITransientDependency
     {
         public ILogger<AbpExceptionFilter> Logger { get; set; }
 
@@ -32,14 +35,14 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
             Logger = NullLogger<AbpExceptionFilter>.Instance;
         }
 
-        public virtual void OnException(ExceptionContext context)
+        public async Task OnExceptionAsync(ExceptionContext context)
         {
             if (!ShouldHandleException(context))
             {
                 return;
             }
 
-            HandleAndWrapException(context);
+            await HandleAndWrapException(context);
         }
 
         protected virtual bool ShouldHandleException(ExceptionContext context)
@@ -65,7 +68,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
             return false;
         }
 
-        protected virtual void HandleAndWrapException(ExceptionContext context)
+        protected virtual async Task HandleAndWrapException(ExceptionContext context)
         {
             //TODO: Trigger an AbpExceptionHandled event or something like that.
 
@@ -82,6 +85,13 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
             Logger.LogWithLevel(logLevel, _jsonSerializer.Serialize(remoteServiceErrorInfo, indented: true));
             Logger.LogException(context.Exception, logLevel);
 
+            await context.HttpContext
+                .RequestServices
+                .GetRequiredService<IExceptionNotifier>()
+                .NotifyAsync(
+                    new ExceptionNotificationContext(context.Exception)
+                );
+
             context.Exception = null; //Handled!
         }
     }

framework/src/Volo.Abp.AspNetCore/Volo/Abp/AspNetCore/ExceptionHandling/AbpExceptionHandlingMiddleware.cs

@@ -7,6 +7,7 @@ using Microsoft.Net.Http.Headers;
 using Volo.Abp.AspNetCore.Mvc;
 using Volo.Abp.AspNetCore.Uow;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Http;
 using Volo.Abp.Json;
 
@@ -73,6 +74,13 @@ namespace Volo.Abp.AspNetCore.ExceptionHandling
                     )
                 )
             );
+
+            await httpContext
+                .RequestServices
+                .GetRequiredService<IExceptionNotifier>()
+                .NotifyAsync(
+                    new ExceptionNotificationContext(exception)
+                );
         }
 
         private Task ClearCacheHeaders(object state)

framework/src/Volo.Abp.BackgroundJobs.Abstractions/Volo/Abp/BackgroundJobs/BackgroundJobExecuter.cs

@@ -3,7 +3,9 @@ using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
 using System;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 
 namespace Volo.Abp.BackgroundJobs
 {
@@ -51,6 +53,10 @@ namespace Volo.Abp.BackgroundJobs
             {
                 Logger.LogException(ex);
 
+                await context.ServiceProvider
+                    .GetRequiredService<IExceptionNotifier>()
+                    .NotifyAsync(new ExceptionNotificationContext(ex));
+
                 throw new BackgroundJobExecutionException("A background job execution is failed. See inner exception for details.", ex)
                 {
                     JobType = context.JobType.AssemblyQualifiedName,

framework/src/Volo.Abp.BackgroundJobs.RabbitMQ/Volo/Abp/BackgroundJobs/RabbitMQ/JobQueue.cs

@@ -9,6 +9,7 @@ using Microsoft.Extensions.Options;
 using Nito.AsyncEx;
 using RabbitMQ.Client;
 using RabbitMQ.Client.Events;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.RabbitMQ;
 using Volo.Abp.Threading;
 
@@ -31,6 +32,7 @@ namespace Volo.Abp.BackgroundJobs.RabbitMQ
         protected IRabbitMqSerializer Serializer { get; }
         protected IBackgroundJobExecuter JobExecuter { get; }
         protected IServiceScopeFactory ServiceScopeFactory { get; }
+        protected IExceptionNotifier ExceptionNotifier { get; }
 
         protected SemaphoreSlim SyncObj = new SemaphoreSlim(1, 1);
         protected bool IsDiposed { get; private set; }
@@ -41,13 +43,15 @@ namespace Volo.Abp.BackgroundJobs.RabbitMQ
             IChannelPool channelPool,
             IRabbitMqSerializer serializer,
             IBackgroundJobExecuter jobExecuter,
-            IServiceScopeFactory serviceScopeFactory)
+            IServiceScopeFactory serviceScopeFactory,
+            IExceptionNotifier exceptionNotifier)
         {
             AbpBackgroundJobOptions = backgroundJobOptions.Value;
             AbpRabbitMqBackgroundJobOptions = rabbitMqAbpBackgroundJobOptions.Value;
             Serializer = serializer;
             JobExecuter = jobExecuter;
             ServiceScopeFactory = serviceScopeFactory;
+            ExceptionNotifier = exceptionNotifier;
             ChannelPool = channelPool;
 
             JobConfiguration = AbpBackgroundJobOptions.GetJob(typeof(TArgs));

framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/AsyncPeriodicBackgroundWorkerBase.cs

@@ -3,6 +3,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundWorkers
@@ -35,18 +36,24 @@ namespace Volo.Abp.BackgroundWorkers
 
         private void Timer_Elapsed(object sender, System.EventArgs e)
         {
-            try
+            using (var scope = ServiceScopeFactory.CreateScope())
             {
-                using (var scope = ServiceScopeFactory.CreateScope())
+                try
                 {
                     AsyncHelper.RunSync(
                         () => DoWorkAsync(new PeriodicBackgroundWorkerContext(scope.ServiceProvider))
                     );
                 }
-            }
-            catch (Exception ex)
-            {
-                Logger.LogException(ex);
+                catch (Exception ex)
+                {
+                    AsyncHelper.RunSync(
+                        () => scope.ServiceProvider
+                            .GetRequiredService<IExceptionNotifier>()
+                            .NotifyAsync(new ExceptionNotificationContext(ex))
+                    );
+
+                    Logger.LogException(ex);
+                }
             }
         }
 

framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/PeriodicBackgroundWorkerBase.cs

@@ -3,6 +3,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundWorkers
@@ -38,16 +39,21 @@ namespace Volo.Abp.BackgroundWorkers
 
         private void Timer_Elapsed(object sender, System.EventArgs e)
         {
-            try
+            using (var scope = ServiceScopeFactory.CreateScope())
             {
-                using (var scope = ServiceScopeFactory.CreateScope())
+                try
                 {
+
                     DoWork(new PeriodicBackgroundWorkerContext(scope.ServiceProvider));
                 }
-            }
-            catch (Exception ex)
-            {
-                Logger.LogException(ex);
+                catch (Exception ex)
+                {
+                    scope.ServiceProvider
+                        .GetRequiredService<IExceptionNotifier>()
+                        .NotifyAsync(new ExceptionNotificationContext(ex));
+
+                    Logger.LogException(ex);
+                }
             }
         }
 

framework/src/Volo.Abp.Caching/Volo/Abp/Caching/DistributedCache.cs

@@ -2,10 +2,13 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Caching.Distributed;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
 using Nito.AsyncEx;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.MultiTenancy;
 using Volo.Abp.Threading;
 
@@ -23,12 +26,14 @@ namespace Volo.Abp.Caching
             IDistributedCache cache,
             ICancellationTokenProvider cancellationTokenProvider,
             IDistributedCacheSerializer serializer,
-            IDistributedCacheKeyNormalizer keyNormalizer) : base(
+            IDistributedCacheKeyNormalizer keyNormalizer,
+            IHybridServiceScopeFactory serviceScopeFactory) : base(
                 distributedCacheOption: distributedCacheOption,
                 cache: cache,
                 cancellationTokenProvider: cancellationTokenProvider,
                 serializer: serializer,
-                keyNormalizer: keyNormalizer)
+                keyNormalizer: keyNormalizer,
+                serviceScopeFactory: serviceScopeFactory)
         {
         }
 
@@ -56,6 +61,8 @@ namespace Volo.Abp.Caching
 
         protected IDistributedCacheKeyNormalizer KeyNormalizer { get; }
 
+        protected IHybridServiceScopeFactory ServiceScopeFactory { get; }
+
         protected SemaphoreSlim SyncSemaphore { get; }
 
         protected DistributedCacheEntryOptions DefaultCacheOptions;
@@ -67,7 +74,8 @@ namespace Volo.Abp.Caching
             IDistributedCache cache,
             ICancellationTokenProvider cancellationTokenProvider,
             IDistributedCacheSerializer serializer,
-            IDistributedCacheKeyNormalizer keyNormalizer)
+            IDistributedCacheKeyNormalizer keyNormalizer,
+            IHybridServiceScopeFactory serviceScopeFactory)
         {
             _distributedCacheOption = distributedCacheOption.Value;
             Cache = cache;
@@ -75,6 +83,7 @@ namespace Volo.Abp.Caching
             Logger = NullLogger<DistributedCache<TCacheItem, TCacheKey>>.Instance;
             Serializer = serializer;
             KeyNormalizer = keyNormalizer;
+            ServiceScopeFactory = serviceScopeFactory;
 
             SyncSemaphore = new SemaphoreSlim(1, 1);
 
@@ -139,7 +148,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    AsyncHelper.RunSync(() => HandleExceptionAsync(ex));
                     return null;
                 }
 
@@ -181,7 +190,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    await HandleExceptionAsync(ex);
                     return null;
                 }
 
@@ -298,7 +307,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    AsyncHelper.RunSync(() => HandleExceptionAsync(ex));
                     return;
                 }
 
@@ -337,7 +346,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    await HandleExceptionAsync(ex);
                     return;
                 }
 
@@ -364,7 +373,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    AsyncHelper.RunSync(() => HandleExceptionAsync(ex));
                     return;
                 }
 
@@ -393,7 +402,7 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    await HandleExceptionAsync(ex);
                     return;
                 }
 
@@ -420,7 +429,8 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    AsyncHelper.RunSync(() => HandleExceptionAsync(ex));
+                    return;
                 }
 
                 throw;
@@ -449,12 +459,24 @@ namespace Volo.Abp.Caching
             {
                 if (hideErrors == true)
                 {
-                    Logger.LogException(ex, LogLevel.Warning);
+                    await HandleExceptionAsync(ex);
                     return;
                 }
 
                 throw;
             }
         }
+
+        protected virtual async Task HandleExceptionAsync(Exception ex)
+        {
+            Logger.LogException(ex, LogLevel.Warning);
+
+            using (var scope = ServiceScopeFactory.CreateScope())
+            {
+                await scope.ServiceProvider
+                    .GetRequiredService<IExceptionNotifier>()
+                    .NotifyAsync(new ExceptionNotificationContext(ex, LogLevel.Warning));
+            }
+        }
     }
 }

framework/src/Volo.Abp.Core/Volo/Abp/DependencyInjection/ExposedServiceExplorer.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Reflection;
 
 namespace Volo.Abp.DependencyInjection
 {
@@ -17,10 +16,11 @@ namespace Volo.Abp.DependencyInjection
         public static List<Type> GetExposedServices(Type type)
         {
             return type
-                .GetCustomAttributes()
+                .GetCustomAttributes(true)
                 .OfType<IExposedServiceTypesProvider>()
                 .DefaultIfEmpty(DefaultExposeServicesAttribute)
                 .SelectMany(p => p.GetExposedServiceTypes(type))
+                .Distinct()
                 .ToList();
         }
     }

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/ExceptionNotificationContext.cs

@@ -0,0 +1,32 @@
+using System;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Logging;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    public class ExceptionNotificationContext
+    {
+        /// <summary>
+        /// The exception object.
+        /// </summary>
+        [NotNull]
+        public Exception Exception { get; }
+
+        public LogLevel LogLevel { get; }
+
+        /// <summary>
+        /// True, if it is handled.
+        /// </summary>
+        public bool Handled { get; }
+        
+        public ExceptionNotificationContext(
+            [NotNull] Exception exception,
+            LogLevel? logLevel = null,
+            bool handled = true)
+        {
+            Exception = Check.NotNull(exception, nameof(exception));
+            LogLevel = logLevel ?? exception.GetLogLevel();
+            Handled = handled;
+        }
+    }
+}

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/ExceptionNotifier.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    public class ExceptionNotifier : IExceptionNotifier, ITransientDependency
+    {
+        public ILogger<ExceptionNotifier> Logger { get; set; }
+
+        protected IEnumerable<IExceptionSubscriber> ExceptionSubscribers { get; }
+
+        public ExceptionNotifier(IEnumerable<IExceptionSubscriber> exceptionSubscribers)
+        {
+            ExceptionSubscribers = exceptionSubscribers;
+            Logger = NullLogger<ExceptionNotifier>.Instance;
+        }
+
+        public virtual async Task NotifyAsync([NotNull] ExceptionNotificationContext context)
+        {
+            Check.NotNull(context, nameof(context));
+
+            foreach (var exceptionSubscriber in ExceptionSubscribers)
+            {
+                try
+                {
+                    await exceptionSubscriber.HandleAsync(context);
+                }
+                catch (Exception e)
+                {
+                    Logger.LogWarning($"Exception subscriber of type {exceptionSubscriber.GetType().AssemblyQualifiedName} has thrown an exception!");
+                    Logger.LogException(e, LogLevel.Warning);
+                }
+            }
+        }
+    }
+}

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/ExceptionNotifierExtensions.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Logging;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    public static class ExceptionNotifierExtensions
+    {
+        public static Task NotifyAsync(
+            [NotNull] this IExceptionNotifier exceptionNotifier, 
+            [NotNull] Exception exception,
+            LogLevel? logLevel = null,
+            bool handled = true)
+        {
+            Check.NotNull(exceptionNotifier, nameof(exceptionNotifier));
+
+            return exceptionNotifier.NotifyAsync(
+                new ExceptionNotificationContext(
+                    exception,
+                    logLevel,
+                    handled
+                )
+            );
+        }
+    }
+}

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/ExceptionSubscriber.cs

@@ -0,0 +1,11 @@
+using System.Threading.Tasks;
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    [ExposeServices(typeof(IExceptionSubscriber))]
+    public abstract class ExceptionSubscriber : IExceptionSubscriber, ITransientDependency
+    {
+        public abstract Task HandleAsync(ExceptionNotificationContext context);
+    }
+}

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/IExceptionNotifier.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    public interface IExceptionNotifier
+    {
+        Task NotifyAsync([NotNull] ExceptionNotificationContext context);
+    }
+}

framework/src/Volo.Abp.Core/Volo/Abp/ExceptionHandling/IExceptionSubscriber.cs

@@ -0,0 +1,10 @@
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+
+namespace Volo.Abp.ExceptionHandling
+{
+    public interface IExceptionSubscriber
+    {
+        Task HandleAsync([NotNull] ExceptionNotificationContext context);
+    }
+}

framework/src/Volo.Abp.Ldap/Volo/Abp/Ldap/LdapManager.cs

@@ -3,7 +3,9 @@ using Microsoft.Extensions.Options;
 using Novell.Directory.Ldap;
 using System.Collections.Generic;
 using System.Text;
+using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Ldap.Exceptions;
 using Volo.Abp.Ldap.Modeling;
 
@@ -13,6 +15,7 @@ namespace Volo.Abp.Ldap
     {
         private readonly string _searchBase;
         private readonly AbpLdapOptions _ldapOptions;
+        private readonly IHybridServiceScopeFactory _hybridServiceScopeFactory;
 
         private readonly string[] _attributes =
         {
@@ -21,8 +24,9 @@ namespace Volo.Abp.Ldap
             "sAMAccountName", "userPrincipalName", "telephoneNumber", "mail"
         };
 
-        public LdapManager(IOptions<AbpLdapOptions> ldapSettingsOptions)
+        public LdapManager(IOptions<AbpLdapOptions> ldapSettingsOptions, IHybridServiceScopeFactory hybridServiceScopeFactory)
         {
+            _hybridServiceScopeFactory = hybridServiceScopeFactory;
             _ldapOptions = ldapSettingsOptions.Value;
             _searchBase = _ldapOptions.SearchBase;
         }
@@ -231,8 +235,15 @@ namespace Volo.Abp.Ldap
                     return true;
                 }
             }
-            catch (Exception )
+            catch (Exception ex)
             {
+                using (var scope = _hybridServiceScopeFactory.CreateScope())
+                {
+                    scope.ServiceProvider
+                        .GetRequiredService<IExceptionNotifier>()
+                        .NotifyAsync(ex);
+                }
+
                 return false;
             }
         }

framework/src/Volo.Abp.RabbitMQ/Volo/Abp/RabbitMQ/RabbitMqMessageConsumer.cs

@@ -7,6 +7,7 @@ using System;
 using System.Collections.Concurrent;
 using System.Threading.Tasks;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.RabbitMQ
@@ -17,6 +18,8 @@ namespace Volo.Abp.RabbitMQ
 
         protected IConnectionPool ConnectionPool { get; }
 
+        protected IExceptionNotifier ExceptionNotifier { get; }
+
         protected AbpTimer Timer { get; }
 
         protected ExchangeDeclareConfiguration Exchange { get; private set; }
@@ -35,10 +38,12 @@ namespace Volo.Abp.RabbitMQ
 
         public RabbitMqMessageConsumer(
             IConnectionPool connectionPool,
-            AbpTimer timer)
+            AbpTimer timer, 
+            IExceptionNotifier exceptionNotifier)
         {
             ConnectionPool = connectionPool;
             Timer = timer;
+            ExceptionNotifier = exceptionNotifier;
             Logger = NullLogger<RabbitMqMessageConsumer>.Instance;
 
             QueueBindCommands = new ConcurrentQueue<QueueBindCommand>();
@@ -114,6 +119,7 @@ namespace Volo.Abp.RabbitMQ
             catch (Exception ex)
             {
                 Logger.LogException(ex, LogLevel.Warning);
+                AsyncHelper.RunSync(() => ExceptionNotifier.NotifyAsync(ex, logLevel: LogLevel.Warning));
             }
         }
 
@@ -180,6 +186,7 @@ namespace Volo.Abp.RabbitMQ
             catch (Exception ex)
             {
                 Logger.LogException(ex, LogLevel.Warning);
+                AsyncHelper.RunSync(() => ExceptionNotifier.NotifyAsync(ex, logLevel: LogLevel.Warning));
             }
         }
 
@@ -197,6 +204,7 @@ namespace Volo.Abp.RabbitMQ
             catch (Exception ex)
             {
                 Logger.LogException(ex);
+                await ExceptionNotifier.NotifyAsync(ex);
             }
         }
 
@@ -214,6 +222,7 @@ namespace Volo.Abp.RabbitMQ
             catch (Exception ex)
             {
                 Logger.LogException(ex, LogLevel.Warning);
+                AsyncHelper.RunSync(() => ExceptionNotifier.NotifyAsync(ex, logLevel: LogLevel.Warning));
             }
         }
 

framework/src/Volo.Abp.Threading/Volo/Abp/Threading/AbpTimer.cs

@@ -3,11 +3,12 @@ using System.Threading;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.ExceptionHandling;
 
 namespace Volo.Abp.Threading
 {
     /// <summary>
-    /// A roboust timer implementation that ensures no overlapping occurs. It waits exactly specified <see cref="Period"/> between ticks.
+    /// A robust timer implementation that ensures no overlapping occurs. It waits exactly specified <see cref="Period"/> between ticks.
     /// </summary>
     public class AbpTimer : ITransientDependency
     {
@@ -29,15 +30,23 @@ namespace Volo.Abp.Threading
 
         public ILogger<AbpTimer> Logger { get; set; }
 
+        protected IExceptionNotifier ExceptionNotifier { get; }
+
         private readonly Timer _taskTimer;
         private volatile bool _performingTasks;
         private volatile bool _isRunning;
 
-        public AbpTimer()
+        public AbpTimer(IExceptionNotifier exceptionNotifier)
         {
+            ExceptionNotifier = exceptionNotifier;
             Logger = NullLogger<AbpTimer>.Instance;
 
-            _taskTimer = new Timer(TimerCallBack, null, Timeout.Infinite, Timeout.Infinite);
+            _taskTimer = new Timer(
+                TimerCallBack,
+                null,
+                Timeout.Infinite,
+                Timeout.Infinite
+            );
         }
 
         public void Start(CancellationToken cancellationToken = default)
@@ -89,9 +98,10 @@ namespace Volo.Abp.Threading
             {
                 Elapsed.InvokeSafely(this, new EventArgs());
             }
-            catch
+            catch(Exception ex)
             {
-
+                Logger.LogException(ex);
+                AsyncHelper.RunSync(() => ExceptionNotifier.NotifyAsync(ex));
             }
             finally
             {

framework/test/Volo.Abp.AspNetCore.Mvc.Tests/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/ExceptionTestController_Tests.cs

@@ -1,6 +1,10 @@
 using System.Net;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using NSubstitute;
 using Shouldly;
+using Volo.Abp.ExceptionHandling;
 using Volo.Abp.Http;
 using Xunit;
 
@@ -8,12 +12,27 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
 {
     public class ExceptionTestController_Tests : AspNetCoreMvcTestBase
     {
+        private IExceptionSubscriber _fakeExceptionSubscriber;
+
+        protected override void ConfigureServices(HostBuilderContext context, IServiceCollection services)
+        {
+            base.ConfigureServices(context, services);
+
+            _fakeExceptionSubscriber = Substitute.For<IExceptionSubscriber>();
+
+            services.AddSingleton(_fakeExceptionSubscriber);
+        }
+
         [Fact]
         public async Task Should_Return_RemoteServiceErrorResponse_For_UserFriendlyException_For_Void_Return_Value()
         {
             var result = await GetResponseAsObjectAsync<RemoteServiceErrorResponse>("/api/exception-test/UserFriendlyException1", HttpStatusCode.Forbidden);
             result.Error.ShouldNotBeNull();
             result.Error.Message.ShouldBe("This is a sample exception!");
+
+            _fakeExceptionSubscriber
+                .Received()
+                .HandleAsync(Arg.Any<ExceptionNotificationContext>());
         }
 
         [Fact]
@@ -24,6 +43,10 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
                     "/api/exception-test/UserFriendlyException2"
                 )
             );
+
+            _fakeExceptionSubscriber
+                .DidNotReceive()
+                .HandleAsync(Arg.Any<ExceptionNotificationContext>());
         }
     }
 }