Merge pull request #25023 from abpframework/issue-24918-event-bus

String-Based Event Publishing with Dynamic Payload

.claude/settings.local.json

@@ -2,7 +2,8 @@
   "permissions": {
     "allow": [
       "Bash(yarn nx g:*)",
-      "Bash(npx vitest:*)"
+      "Bash(npx vitest:*)",
+      "Bash(git show:*)"
     ]
   }
 }

docs/en/Community-Articles/2026-03-23-Dynamic-Events-in-ABP/POST.md

@@ -0,0 +1,203 @@
+# Dynamic Events in ABP
+
+ABP's Event Bus is a core infrastructure piece. The **Local Event Bus** handles in-process communication between services. The **Distributed Event Bus** handles cross-service communication over message brokers like RabbitMQ, Kafka, Azure Service Bus, and Rebus.
+
+Both are fully type-safe — you define event types at compile time, register handlers via DI, and everything is wired up automatically. This works great, but it has one assumption: **you know all your event types at compile time**.
+
+In practice, that assumption breaks down in several scenarios:
+
+- You're building a **plugin system** where third-party modules register their own event types at runtime — you can't pre-define an `IDistributedEventHandler<TEvent>` for every possible plugin event
+- Your system receives events from **external systems** (webhooks, IoT devices, partner APIs) where the event schema is defined by the external party, not by your codebase
+- You're building a **low-code platform** where end users define event-driven workflows through a visual designer — the event names and payloads are entirely determined at runtime
+
+ABP's **Dynamic Events** extend the existing `IEventBus` and `IDistributedEventBus` interfaces with string-based publishing and subscription. You can publish events by name, subscribe to events by name, and handle payloads without any compile-time type binding — all while coexisting seamlessly with the existing typed event system.
+
+## Publishing Events by Name
+
+The most straightforward use case: publish an event using a string name and an arbitrary payload.
+
+```csharp
+public class OrderAppService : ApplicationService
+{
+    private readonly IDistributedEventBus _eventBus;
+
+    public OrderAppService(IDistributedEventBus eventBus)
+    {
+        _eventBus = eventBus;
+    }
+
+    public async Task PlaceOrderAsync(PlaceOrderInput input)
+    {
+        // Business logic...
+
+        // Publish a dynamic event — no event class needed
+        await _eventBus.PublishAsync(
+            "OrderPlaced",
+            new { OrderId = input.Id, CustomerEmail = input.Email }
+        );
+    }
+}
+```
+
+The payload can be any serializable object — an anonymous type, a `Dictionary<string, object>`, or even an existing typed class. The event bus serializes the payload and sends it to the broker with the string name as the routing key.
+
+### What If a Typed Event Already Exists?
+
+If the string name matches an existing typed event (via `EventNameAttribute`), the framework automatically converts the payload to the typed class and routes it through the **typed pipeline**. Both typed handlers and dynamic handlers are triggered.
+
+```csharp
+[EventName("OrderPlaced")]
+public class OrderPlacedEto
+{
+    public Guid OrderId { get; set; }
+    public string CustomerEmail { get; set; }
+}
+
+// This handler will still receive the event, with auto-converted data
+public class OrderEmailHandler : IDistributedEventHandler<OrderPlacedEto>
+{
+    public Task HandleEventAsync(OrderPlacedEto eventData)
+    {
+        // eventData.OrderId and eventData.CustomerEmail are populated
+        return Task.CompletedTask;
+    }
+}
+```
+
+Publishing by name with `new { OrderId = ..., CustomerEmail = ... }` triggers this typed handler — the framework handles the serialization round-trip. This is especially useful for scenarios where a service needs to emit events without taking a dependency on the project that defines the event type.
+
+## Subscribing to Dynamic Events
+
+Dynamic subscription lets you register event handlers at runtime, using a string event name.
+
+```csharp
+public override async Task OnApplicationInitializationAsync(
+    ApplicationInitializationContext context)
+{
+    var eventBus = context.ServiceProvider
+        .GetRequiredService<IDistributedEventBus>();
+
+    // Subscribe to a dynamic event — no event class needed
+    eventBus.Subscribe("PartnerOrderReceived",
+        new PartnerOrderHandler(context.ServiceProvider));
+}
+```
+
+The handler implements `IDistributedEventHandler<DynamicEventData>`:
+
+```csharp
+public class PartnerOrderHandler : IDistributedEventHandler<DynamicEventData>
+{
+    private readonly IServiceProvider _serviceProvider;
+
+    public PartnerOrderHandler(IServiceProvider serviceProvider)
+    {
+        _serviceProvider = serviceProvider;
+    }
+
+    public async Task HandleEventAsync(DynamicEventData eventData)
+    {
+        // eventData.EventName = "PartnerOrderReceived"
+        // eventData.Data = the raw payload from the broker
+
+        var orderProcessor = _serviceProvider
+            .GetRequiredService<IPartnerOrderProcessor>();
+
+        await orderProcessor.ProcessAsync(eventData.EventName, eventData.Data);
+    }
+}
+```
+
+`DynamicEventData` is a simple POCO with two properties:
+
+- **`EventName`** — the string name that identifies the event
+- **`Data`** — the raw event data payload (the deserialized `object` from the broker)
+
+> `Subscribe` returns an `IDisposable`. Call `Dispose()` to unsubscribe the handler at runtime.
+
+## Mixed Typed and Dynamic Handlers
+
+Typed and dynamic handlers coexist naturally. When both are registered for the same event name, **both are triggered** — the framework automatically converts the data to the appropriate format for each handler.
+
+```csharp
+// Typed handler — receives OrderPlacedEto
+eventBus.Subscribe<OrderPlacedEto, OrderEmailHandler>();
+
+// Dynamic handler — receives DynamicEventData for the same event
+eventBus.Subscribe("OrderPlaced", new AuditLogHandler());
+```
+
+When `OrderPlacedEto` is published (by type or by name), both handlers fire. The typed handler receives a fully deserialized `OrderPlacedEto` object. The dynamic handler receives a `DynamicEventData` wrapping the raw payload.
+
+This enables a powerful pattern: the core business logic uses typed handlers for safety, while infrastructure concerns (auditing, logging, plugin hooks) use dynamic handlers for flexibility.
+
+## Outbox Support
+
+Dynamic events go through the same **outbox/inbox pipeline** as typed events. If you have outbox configured, dynamic events benefit from the same reliability guarantees — they are stored in the outbox table within the same database transaction as your business data, then reliably delivered to the broker by the background worker.
+
+No additional configuration is needed. The outbox works transparently for both typed and dynamic events:
+
+```csharp
+// This dynamic event goes through the outbox if configured
+using var uow = _unitOfWorkManager.Begin();
+await _eventBus.PublishAsync(
+    "OrderPlaced",
+    new { OrderId = orderId },
+    onUnitOfWorkComplete: true,
+    useOutbox: true
+);
+await uow.CompleteAsync();
+```
+
+## Local Event Bus
+
+Dynamic events work on the local event bus too, not just the distributed bus. The API is the same:
+
+```csharp
+var localEventBus = context.ServiceProvider
+    .GetRequiredService<ILocalEventBus>();
+
+// Subscribe dynamically
+localEventBus.Subscribe("UserActivityTracked",
+    new SingleInstanceHandlerFactory(
+        new ActionEventHandler<DynamicEventData>(eventData =>
+        {
+            // Handle the event
+            return Task.CompletedTask;
+        })));
+
+// Publish dynamically
+await localEventBus.PublishAsync("UserActivityTracked", new
+{
+    UserId = currentUser.Id,
+    Action = "PageView",
+    Url = "/products/42"
+});
+```
+
+## Provider Support
+
+Dynamic events work with all distributed event bus providers:
+
+| Provider | Dynamic Subscribe | Dynamic Publish |
+|---|---|---|
+| LocalDistributedEventBus (default) | ✅ | ✅ |
+| RabbitMQ | ✅ | ✅ |
+| Kafka | ✅ | ✅ |
+| Rebus | ✅ | ✅ |
+| Azure Service Bus | ✅ | ✅ |
+| Dapr | ❌ | ❌ |
+
+Dapr requires topic subscriptions to be declared at application startup and cannot add subscriptions at runtime. Calling `Subscribe(string, ...)` on the Dapr provider throws an `AbpException`.
+
+## Summary
+
+`IEventBus.PublishAsync(string, object)` and `IEventBus.Subscribe(string, handler)` let you publish and subscribe to events by name at runtime — no compile-time types required. If the event name matches a typed event, the framework auto-converts the payload and triggers both typed and dynamic handlers. Dynamic events go through the same outbox/inbox pipeline as typed events, so reliability guarantees are preserved. This works across all providers except Dapr, and coexists seamlessly with the existing typed event system.
+
+## References
+
+- [Local Event Bus](https://abp.io/docs/latest/framework/infrastructure/event-bus/local)
+- [Distributed Event Bus](https://abp.io/docs/latest/framework/infrastructure/event-bus/distributed)
+- [RabbitMQ Integration](https://abp.io/docs/latest/framework/infrastructure/event-bus/distributed/rabbitmq)
+- [Kafka Integration](https://abp.io/docs/latest/framework/infrastructure/event-bus/distributed/kafka)
+- [Dynamic Distributed Events Sample](https://github.com/abpframework/abp-samples/tree/master/DynamicDistributedEvents)

docs/en/framework/infrastructure/event-bus/distributed/index.md

@@ -721,6 +721,82 @@ Configure<AbpDistributedEventBusOptions>(options =>
 });
 ````
 
+## Dynamic (String-Based) Events
+
+In addition to the type-safe event system described above, ABP also supports **dynamic events** that are identified by a string name rather than a CLR type. This is useful for scenarios where event types are not known at compile time, such as integrating with external systems or building plugin architectures.
+
+> **Note:** Dynamic event subscriptions are supported by RabbitMQ, Kafka, Azure Service Bus, and Rebus providers. The **Dapr provider does not support dynamic events** because Dapr requires topic subscriptions to be declared at application startup and cannot add subscriptions at runtime. Attempting to call `Subscribe(string, ...)` on the Dapr provider will throw an `AbpException`.
+
+### Publishing Dynamic Events
+
+Use the `PublishAsync` overload that accepts a string event name:
+
+````csharp
+await distributedEventBus.PublishAsync(
+    "MyDynamicEvent",
+    new Dictionary<string, object>
+    {
+        ["UserId"] = 42,
+        ["Name"] = "John"
+    }
+);
+````
+
+If a typed event exists with the given name (via `EventNameAttribute` or convention), the data is automatically deserialized and routed to the typed handler. Otherwise, it is delivered as a `DynamicEventData` to dynamic handlers.
+
+You can also control `onUnitOfWorkComplete` and `useOutbox` parameters:
+
+````csharp
+await distributedEventBus.PublishAsync(
+    "MyDynamicEvent",
+    new { UserId = 42, Name = "John" },
+    onUnitOfWorkComplete: true,
+    useOutbox: true
+);
+````
+
+### Subscribing to Dynamic Events
+
+Use the `Subscribe` overload that accepts a string event name:
+
+````csharp
+var subscription = distributedEventBus.Subscribe(
+    "MyDynamicEvent",
+    new SingleInstanceHandlerFactory(
+        new ActionEventHandler<DynamicEventData>(eventData =>
+        {
+            // Access the event name and raw data
+            var name = eventData.EventName;
+            var data = eventData.Data;
+
+            return Task.CompletedTask;
+        })));
+
+// Unsubscribe when done
+subscription.Dispose();
+````
+
+You can also subscribe using a typed distributed event handler:
+
+````csharp
+distributedEventBus.Subscribe("MyDynamicEvent", myDistributedEventHandler);
+````
+
+Where `myDistributedEventHandler` implements `IDistributedEventHandler<DynamicEventData>`.
+
+### Mixed Typed and Dynamic Handlers
+
+When both a typed handler and a dynamic handler are registered for the same event name, **both** handlers are triggered. The typed handler receives the converted typed data, while the dynamic handler receives a `DynamicEventData` wrapper.
+
+### DynamicEventData Class
+
+The `DynamicEventData` class is a simple data object that wraps the event payload:
+
+- **`EventName`**: The string name that identifies the event.
+- **`Data`**: The raw event data payload.
+
+> If a typed handler exists for the same event name, the framework automatically converts the data to the expected type using the event bus serialization pipeline. Dynamic handlers receive the raw `Data` as-is.
+
 ## See Also
 
 * [Local Event Bus](../local)

docs/en/framework/infrastructure/event-bus/local/index.md

@@ -249,6 +249,59 @@ If you set it to `false`, the `EntityUpdatedEventData<T>` will not be published
 
 > This option is only used for the EF Core.
 
+## Dynamic (String-Based) Events
+
+In addition to the type-safe event system described above, ABP also supports **dynamic events** that are identified by a string name rather than a CLR type. This is useful for scenarios where event types are not known at compile time.
+
+### Publishing Dynamic Events
+
+Use the `PublishAsync` overload that accepts a string event name:
+
+````csharp
+await localEventBus.PublishAsync(
+    "MyDynamicEvent",
+    new Dictionary<string, object>
+    {
+        ["UserId"] = 42,
+        ["Name"] = "John"
+    }
+);
+````
+
+If a typed event exists with the given name (via `EventNameAttribute` or convention), the data is automatically converted and routed to the typed handler. Otherwise, it is delivered as a `DynamicEventData` to dynamic handlers.
+
+### Subscribing to Dynamic Events
+
+Use the `Subscribe` overload that accepts a string event name:
+
+````csharp
+var subscription = localEventBus.Subscribe(
+    "MyDynamicEvent",
+    new SingleInstanceHandlerFactory(
+        new ActionEventHandler<DynamicEventData>(eventData =>
+        {
+            // Access the event name and raw data
+            var name = eventData.EventName;
+            var data = eventData.Data;
+
+            return Task.CompletedTask;
+        })));
+
+// Unsubscribe when done
+subscription.Dispose();
+````
+
+The `DynamicEventData` class is a simple data object with two properties:
+
+- **`EventName`**: The string name that identifies the event.
+- **`Data`**: The raw event data payload.
+
+> If a typed handler exists for the same event name, the framework automatically converts the data to the expected type. Dynamic handlers receive the raw `Data` as-is.
+
+### Mixed Typed and Dynamic Handlers
+
+When both a typed handler and a dynamic handler are registered for the same event name, **both** handlers are triggered. The typed handler receives the converted typed data, while the dynamic handler receives a `DynamicEventData` wrapper.
+
 ## See Also
 
 * [Distributed Event Bus](../distributed)

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Distributed/IDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading.Tasks;
 
 namespace Volo.Abp.EventBus.Distributed;
@@ -14,15 +14,55 @@ public interface IDistributedEventBus : IEventBus
     IDisposable Subscribe<TEvent>(IDistributedEventHandler<TEvent> handler)
         where TEvent : class;
 
+    /// <summary>
+    /// Triggers an event.
+    /// </summary>
+    /// <typeparam name="TEvent">Event type</typeparam>
+    /// <param name="eventData">Related data for the event</param>
+    /// <param name="onUnitOfWorkComplete">True, to publish the event at the end of the current unit of work, if available</param>
+    /// <param name="useOutbox">True, to use the outbox pattern for reliable event publishing</param>
+    /// <returns>The task to handle async operation</returns>
     Task PublishAsync<TEvent>(
         TEvent eventData,
         bool onUnitOfWorkComplete = true,
         bool useOutbox = true)
         where TEvent : class;
 
+    /// <summary>
+    /// Triggers an event.
+    /// </summary>
+    /// <param name="eventType">Event type</param>
+    /// <param name="eventData">Related data for the event</param>
+    /// <param name="onUnitOfWorkComplete">True, to publish the event at the end of the current unit of work, if available</param>
+    /// <param name="useOutbox">True, to use the outbox pattern for reliable event publishing</param>
+    /// <returns>The task to handle async operation</returns>
     Task PublishAsync(
         Type eventType,
         object eventData,
         bool onUnitOfWorkComplete = true,
         bool useOutbox = true);
+
+    /// <summary>
+    /// Registers to an event by its string-based event name.
+    /// Same (given) instance of the handler is used for all event occurrences.
+    /// Wraps the handler as <see cref="IDistributedEventHandler{DynamicEventData}"/>.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="handler">Object to handle the event</param>
+    IDisposable Subscribe(string eventName, IDistributedEventHandler<DynamicEventData> handler);
+
+    /// <summary>
+    /// Triggers an event by its string-based event name.
+    /// Used for dynamic (type-less) event publishing over distributed event bus.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="eventData">Related data for the event</param>
+    /// <param name="onUnitOfWorkComplete">True, to publish the event at the end of the current unit of work, if available</param>
+    /// <param name="useOutbox">True, to use the outbox pattern for reliable event publishing</param>
+    /// <returns>The task to handle async operation</returns>
+    Task PublishAsync(
+        string eventName,
+        object eventData,
+        bool onUnitOfWorkComplete = true,
+        bool useOutbox = true);
 }

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/DynamicEventData.cs

@@ -0,0 +1,17 @@
+namespace Volo.Abp.EventBus;
+
+/// <summary>
+/// Wraps arbitrary event data with a string-based event name for dynamic (type-less) event handling.
+/// </summary>
+public class DynamicEventData
+{
+    public string EventName { get; }
+
+    public object Data { get; }
+
+    public DynamicEventData(string eventName, object data)
+    {
+        EventName = Check.NotNullOrWhiteSpace(eventName, nameof(eventName));
+        Data = Check.NotNull(data, nameof(data));
+    }
+}

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/IEventBus.cs

@@ -23,6 +23,16 @@ public interface IEventBus
     /// <param name="onUnitOfWorkComplete">True, to publish the event at the end of the current unit of work, if available</param>
     /// <returns>The task to handle async operation</returns>
     Task PublishAsync(Type eventType, object eventData, bool onUnitOfWorkComplete = true);
+    
+    /// <summary>
+    /// Triggers an event by its string-based event name.
+    /// Used for dynamic (type-less) event publishing.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="eventData">Related data for the event</param>
+    /// <param name="onUnitOfWorkComplete">True, to publish the event at the end of the current unit of work, if available</param>
+    /// <returns>The task to handle async operation</returns>
+    Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true);
 
     /// <summary>
     /// Registers to an event.
@@ -50,6 +60,22 @@ public interface IEventBus
     /// <param name="eventType">Event type</param>
     /// <param name="handler">Object to handle the event</param>
     IDisposable Subscribe(Type eventType, IEventHandler handler);
+    
+    /// <summary>
+    /// Registers to an event by its string-based event name.
+    /// Same (given) instance of the handler is used for all event occurrences.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="handler">Object to handle the event</param>
+    IDisposable Subscribe(string eventName, IEventHandler handler);
+
+    /// <summary>
+    /// Registers to an event by its string-based event name.
+    /// Given factory is used to create/release handlers.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="handler">A factory to create/release handlers</param>
+    IDisposable Subscribe(string eventName, IEventHandlerFactory handler);
 
     /// <summary>
     /// Registers to an event.
@@ -104,6 +130,20 @@ public interface IEventBus
     /// <param name="eventType">Event type</param>
     /// <param name="factory">Factory object that is registered before</param>
     void Unsubscribe(Type eventType, IEventHandlerFactory factory);
+    
+    /// <summary>
+    /// Unregisters from an event by its string-based event name.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="factory">Factory object that is registered before</param>
+    void Unsubscribe(string eventName, IEventHandlerFactory factory);
+
+    /// <summary>
+    /// Unregisters from an event by its string-based event name.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <param name="handler">Handler object that is registered before</param>
+    void Unsubscribe(string eventName, IEventHandler handler);
 
     /// <summary>
     /// Unregisters all event handlers of given event type.
@@ -117,4 +157,10 @@ public interface IEventBus
     /// </summary>
     /// <param name="eventType">Event type</param>
     void UnsubscribeAll(Type eventType);
+
+    /// <summary>
+    /// Unregisters all event handlers of given string-based event name.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    void UnsubscribeAll(string eventName);
 }

framework/src/Volo.Abp.EventBus.Abstractions/Volo/Abp/EventBus/Local/ILocalEventBus.cs

@@ -23,4 +23,11 @@ public interface ILocalEventBus : IEventBus
     /// <param name="eventType">Event type</param>
     /// <returns></returns>
      List<EventTypeWithEventHandlerFactories> GetEventHandlerFactories(Type eventType);
+    
+    /// <summary>
+    /// Gets the list of event handler factories for the given string-based event name.
+    /// </summary>
+    /// <param name="eventName">Name of the event</param>
+    /// <returns>List of event handler factories registered for the given event name</returns>
+    List<EventTypeWithEventHandlerFactories> GetDynamicEventHandlerFactories(string eventName);
 }

framework/src/Volo.Abp.EventBus.Azure/Volo/Abp/EventBus/Azure/AzureDistributedEventBus.cs

@@ -29,6 +29,7 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     protected IAzureServiceBusSerializer Serializer { get; }
     protected ConcurrentDictionary<Type, List<IEventHandlerFactory>> HandlerFactories { get; }
     protected ConcurrentDictionary<string, Type> EventTypes  { get; }
+    protected ConcurrentDictionary<string, List<IEventHandlerFactory>> DynamicHandlerFactories { get; }
     protected IAzureServiceBusMessageConsumer Consumer { get; private set; } = default!;
 
     public AzureDistributedEventBus(
@@ -61,6 +62,7 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         PublisherPool = publisherPool;
         HandlerFactories = new ConcurrentDictionary<Type, List<IEventHandlerFactory>>();
         EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicHandlerFactories = new ConcurrentDictionary<string, List<IEventHandlerFactory>>();
     }
 
     public void Initialize()
@@ -81,14 +83,25 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         {
             return;
         }
+
         var eventType = EventTypes.GetOrDefault(eventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(message.Body.ToArray(), eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(eventName))
+        {
+            var rawBytes = message.Body.ToArray();
+            eventData = new DynamicEventData(eventName, Serializer.Deserialize<object>(rawBytes));
+            eventType = typeof(DynamicEventData);
+        }
+        else
         {
             return;
         }
 
-        var eventData = Serializer.Deserialize(message.Body.ToArray(), eventType);
-
         if (await AddToInboxAsync(message.MessageId, eventName, eventType, eventData, message.CorrelationId))
         {
             return;
@@ -100,6 +113,113 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         }
     }
 
+    public override IDisposable Subscribe(Type eventType, IEventHandlerFactory factory)
+    {
+        var handlerFactories = GetOrCreateHandlerFactories(eventType);
+
+        if (factory.IsInFactories(handlerFactories))
+        {
+            return NullDisposable.Instance;
+        }
+
+        handlerFactories.Add(factory);
+
+        return new EventHandlerFactoryUnregistrar(this, eventType, factory);
+    }
+
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        var handlerFactories = GetOrCreateDynamicHandlerFactories(eventName);
+
+        if (handler.IsInFactories(handlerFactories))
+        {
+            return NullDisposable.Instance;
+        }
+
+        handlerFactories.Add(handler);
+
+        return new DynamicEventHandlerFactoryUnregistrar(this, eventName, handler);
+    }
+
+    public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
+    {
+        Check.NotNull(action, nameof(action));
+
+        GetOrCreateHandlerFactories(typeof(TEvent))
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                    {
+                        var singleInstanceFactory = factory as SingleInstanceHandlerFactory;
+                        if (singleInstanceFactory == null)
+                        {
+                            return false;
+                        }
+
+                        var actionHandler = singleInstanceFactory.HandlerInstance as ActionEventHandler<TEvent>;
+                        if (actionHandler == null)
+                        {
+                            return false;
+                        }
+
+                        return actionHandler.Action == action;
+                    });
+            });
+    }
+
+    public override void Unsubscribe(Type eventType, IEventHandler handler)
+    {
+        GetOrCreateHandlerFactories(eventType)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory handlerFactory &&
+                        handlerFactory.HandlerInstance == handler
+                );
+            });
+    }
+
+    public override void Unsubscribe(Type eventType, IEventHandlerFactory factory)
+    {
+        GetOrCreateHandlerFactories(eventType)
+            .Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(Type eventType)
+    {
+        GetOrCreateHandlerFactories(eventType)
+            .Locking(factories => factories.Clear());
+    }
+
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete);
+    }
+
+    protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
+    {
+        var (eventName, resolvedData) = ResolveEventForPublishing(eventType, eventData);
+        await PublishAsync(eventName, resolvedData);
+    }
+
+    protected override void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord)
+    {
+        unitOfWork.AddOrReplaceDistributedEvent(eventRecord);
+    }
+
     public async override Task PublishFromOutboxAsync(OutgoingEventInfo outgoingEvent, OutboxConfig outboxConfig)
     {
         await PublishAsync(outgoingEvent.EventName, outgoingEvent.EventData, outgoingEvent.GetCorrelationId(), outgoingEvent.Id);
@@ -162,12 +282,21 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     public async override Task ProcessFromInboxAsync(IncomingEventInfo incomingEvent, InboxConfig inboxConfig)
     {
         var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(incomingEvent.EventName))
+        {
+            eventData = new DynamicEventData(incomingEvent.EventName, Serializer.Deserialize<object>(incomingEvent.EventData));
+            eventType = typeof(DynamicEventData);
+        }
+        else
         {
             return;
         }
-
-        var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -184,82 +313,6 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         return Serializer.Serialize(eventData);
     }
 
-    public override IDisposable Subscribe(Type eventType, IEventHandlerFactory factory)
-    {
-        var handlerFactories = GetOrCreateHandlerFactories(eventType);
-
-        if (factory.IsInFactories(handlerFactories))
-        {
-            return NullDisposable.Instance;
-        }
-
-        handlerFactories.Add(factory);
-
-        return new EventHandlerFactoryUnregistrar(this, eventType, factory);
-    }
-
-    public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
-    {
-        Check.NotNull(action, nameof(action));
-
-        GetOrCreateHandlerFactories(typeof(TEvent))
-            .Locking(factories =>
-            {
-                factories.RemoveAll(
-                    factory =>
-                    {
-                        var singleInstanceFactory = factory as SingleInstanceHandlerFactory;
-                        if (singleInstanceFactory == null)
-                        {
-                            return false;
-                        }
-
-                        var actionHandler = singleInstanceFactory.HandlerInstance as ActionEventHandler<TEvent>;
-                        if (actionHandler == null)
-                        {
-                            return false;
-                        }
-
-                        return actionHandler.Action == action;
-                    });
-            });
-    }
-
-    public override void Unsubscribe(Type eventType, IEventHandler handler)
-    {
-        GetOrCreateHandlerFactories(eventType)
-            .Locking(factories =>
-            {
-                factories.RemoveAll(
-                    factory =>
-                        factory is SingleInstanceHandlerFactory handlerFactory &&
-                        handlerFactory.HandlerInstance == handler
-                );
-            });
-    }
-
-    public override void Unsubscribe(Type eventType, IEventHandlerFactory factory)
-    {
-        GetOrCreateHandlerFactories(eventType)
-            .Locking(factories => factories.Remove(factory));
-    }
-
-    public override void UnsubscribeAll(Type eventType)
-    {
-        GetOrCreateHandlerFactories(eventType)
-            .Locking(factories => factories.Clear());
-    }
-
-    protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
-    {
-        await PublishAsync(EventNameAttribute.GetNameOrDefault(eventType), eventData);
-    }
-
-    protected override void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord)
-    {
-        unitOfWork.AddOrReplaceDistributedEvent(eventRecord);
-    }
-
     protected virtual Task PublishAsync(string eventName, object eventData)
     {
         var body = Serializer.Serialize(eventData);
@@ -292,23 +345,12 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         await publisher.SendMessageAsync(message);
     }
 
-    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
-    {
-        return HandlerFactories
-            .Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key))
-            .Select(handlerFactory =>
-                new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value))
-            .ToArray();
-    }
-
-    private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
-    {
-        return handlerEventType == targetEventType || handlerEventType.IsAssignableFrom(targetEventType);
-    }
-
     protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
     {
-        EventTypes.GetOrAdd(eventName, eventType);
+        if (typeof(DynamicEventData) != eventType)
+        {
+            EventTypes.GetOrAdd(eventName, eventType);
+        }
         return base.OnAddToOutboxAsync(eventName, eventType, eventData);
     }
 
@@ -324,4 +366,83 @@ public class AzureDistributedEventBus : DistributedEventBusBase, ISingletonDepen
             }
         );
     }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
+    {
+        var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        var eventNames = EventTypes.Where(x => ShouldTriggerEventForHandler(eventType, x.Value)).Select(x => x.Key).ToList();
+
+        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
+        }
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(aehf => eventNames.Contains(aehf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return handlerFactoryList.ToArray();
+    }
+
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory singleFactory &&
+                        singleFactory.HandlerInstance == handler
+                );
+            });
+    }
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories => factories.Clear());
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var eventType = GetEventTypeByEventName(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        var result = new List<EventTypeWithEventHandlerFactories>();
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(hf => hf.Key == eventName))
+        {
+            result.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return result;
+    }
+
+    private List<IEventHandlerFactory> GetOrCreateDynamicHandlerFactories(string eventName)
+    {
+        return DynamicHandlerFactories.GetOrAdd(eventName, _ => new List<IEventHandlerFactory>());
+    }
+
+    private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
+    {
+        return handlerEventType == targetEventType || handlerEventType.IsAssignableFrom(targetEventType);
+    }
 }

framework/src/Volo.Abp.EventBus.Dapr/Volo/Abp/EventBus/Dapr/DaprDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
@@ -79,6 +79,15 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
         return new EventHandlerFactoryUnregistrar(this, eventType, factory);
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        throw new AbpException(
+            "Dapr distributed event bus does not support dynamic event subscriptions. " +
+            "Dapr requires topic subscriptions to be declared at startup and cannot add subscriptions at runtime. " +
+            "Use a typed event handler (IDistributedEventHandler<T>) instead.");
+    }
+
     public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
     {
         Check.NotNull(action, nameof(action));
@@ -129,37 +138,43 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
         GetOrCreateHandlerFactories(eventType).Locking(factories => factories.Clear());
     }
 
-    protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
     {
-        await PublishToDaprAsync(eventType, eventData, null, CorrelationIdProvider.Get());
+        var eventType = EventTypes.GetOrDefault(eventName);
+        if (eventType != null)
+        {
+            var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
+        }
+
+        throw new AbpException(
+            "Dapr distributed event bus does not support dynamic event publishing. " +
+            "Dapr requires topic subscriptions to be declared at startup. " +
+            "Use a typed event (PublishAsync<TEvent>) or ensure the event name matches a registered typed event.");
     }
 
-    protected override void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord)
+    protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
     {
-        unitOfWork.AddOrReplaceDistributedEvent(eventRecord);
+        var (eventName, resolvedData) = ResolveEventForPublishing(eventType, eventData);
+        await PublishToDaprAsync(eventName, resolvedData, null, CorrelationIdProvider.Get());
     }
 
-    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
+    protected override void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord)
     {
-        var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        unitOfWork.AddOrReplaceDistributedEvent(eventRecord);
-
-        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
-        {
-            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
-        }
-
-        return handlerFactoryList.ToArray();
     }
 
     public async override Task PublishFromOutboxAsync(OutgoingEventInfo outgoingEvent, OutboxConfig outboxConfig)
     {
-        var eventType = GetEventType(outgoingEvent.EventName);
+        var eventType = EventTypes.GetOrDefault(outgoingEvent.EventName);
         if (eventType == null)
         {
             return;
         }
 
-        await PublishToDaprAsync(outgoingEvent.EventName, Serializer.Deserialize(outgoingEvent.EventData, eventType), outgoingEvent.Id, outgoingEvent.GetCorrelationId());
+        var eventData = Serializer.Deserialize(outgoingEvent.EventData, eventType);
+        await PublishToDaprAsync(outgoingEvent.EventName, eventData, outgoingEvent.Id, outgoingEvent.GetCorrelationId());
 
         using (CorrelationIdProvider.Change(outgoingEvent.GetCorrelationId()))
         {
@@ -182,7 +197,7 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
 
     public virtual async Task TriggerHandlersAsync(Type eventType, object eventData, string? messageId = null, string? correlationId = null)
     {
-        if (await AddToInboxAsync(messageId, EventNameAttribute.GetNameOrDefault(eventType), eventType, eventData, correlationId))
+        if (await AddToInboxAsync(messageId, GetEventName(eventType, eventData), eventType, eventData, correlationId))
         {
             return;
         }
@@ -195,13 +210,16 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
 
     public async override Task ProcessFromInboxAsync(IncomingEventInfo incomingEvent, InboxConfig inboxConfig)
     {
-        var eventType = GetEventType(incomingEvent.EventName);
+        var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
+        object eventData;
+
         if (eventType == null)
         {
             return;
         }
 
-        var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+        eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -218,6 +236,18 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
         return Serializer.Serialize(eventData);
     }
 
+    protected virtual async Task PublishToDaprAsync(Type eventType, object eventData, Guid? messageId = null, string? correlationId = null)
+    {
+        await PublishToDaprAsync(EventNameAttribute.GetNameOrDefault(eventType), eventData, messageId, correlationId);
+    }
+
+    protected virtual async Task PublishToDaprAsync(string eventName, object eventData, Guid? messageId = null, string? correlationId = null)
+    {
+        var client = await DaprClientFactory.CreateAsync();
+        var data = new AbpDaprEventData(DaprEventBusOptions.PubSubName, eventName, (messageId ?? GuidGenerator.Create()).ToString("N"), Serializer.SerializeToString(eventData), correlationId);
+        await client.PublishEventAsync(pubsubName: DaprEventBusOptions.PubSubName, topicName: eventName, data: data);
+    }
+
     protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
     {
         EventTypes.GetOrAdd(eventName, eventType);
@@ -237,21 +267,55 @@ public class DaprDistributedEventBus : DistributedEventBusBase, ISingletonDepend
         );
     }
 
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
+    {
+        var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+
+        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
+        }
+
+        return handlerFactoryList.ToArray();
+    }
+
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
     public Type? GetEventType(string eventName)
     {
         return EventTypes.GetOrDefault(eventName);
     }
 
-    protected virtual async Task PublishToDaprAsync(Type eventType, object eventData, Guid? messageId = null, string? correlationId = null)
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
     {
-        await PublishToDaprAsync(EventNameAttribute.GetNameOrDefault(eventType), eventData, messageId, correlationId);
+        throw new AbpException("Dapr distributed event bus does not support dynamic event subscriptions.");
     }
 
-    protected virtual async Task PublishToDaprAsync(string eventName, object eventData, Guid? messageId = null, string? correlationId = null)
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
     {
-        var client = await DaprClientFactory.CreateAsync();
+        throw new AbpException("Dapr distributed event bus does not support dynamic event subscriptions.");
-        var data = new AbpDaprEventData(DaprEventBusOptions.PubSubName, eventName, (messageId ?? GuidGenerator.Create()).ToString("N"), Serializer.SerializeToString(eventData), correlationId);
+    }
-        await client.PublishEventAsync(pubsubName: DaprEventBusOptions.PubSubName, topicName: eventName, data: data);
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        throw new AbpException("Dapr distributed event bus does not support dynamic event subscriptions.");
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var eventType = GetEventTypeByEventName(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        return Array.Empty<EventTypeWithEventHandlerFactories>();
     }
 
     private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)

framework/src/Volo.Abp.EventBus.Kafka/Volo/Abp/EventBus/Kafka/KafkaDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
@@ -29,6 +29,7 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     protected IProducerPool ProducerPool { get; }
     protected ConcurrentDictionary<Type, List<IEventHandlerFactory>> HandlerFactories { get; }
     protected ConcurrentDictionary<string, Type> EventTypes { get; }
+    protected ConcurrentDictionary<string, List<IEventHandlerFactory>> DynamicHandlerFactories { get; }
     protected IKafkaMessageConsumer Consumer { get; private set; } = default!;
 
     public KafkaDistributedEventBus(
@@ -63,6 +64,7 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 
         HandlerFactories = new ConcurrentDictionary<Type, List<IEventHandlerFactory>>();
         EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicHandlerFactories = new ConcurrentDictionary<string, List<IEventHandlerFactory>>();
     }
 
     public void Initialize()
@@ -80,14 +82,24 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     {
         var eventName = message.Key;
         var eventType = EventTypes.GetOrDefault(eventName);
-        if (eventType == null)
-        {
-            return;
-        }
 
         var messageId = message.GetMessageId();
-        var eventData = Serializer.Deserialize(message.Value, eventType);
         var correlationId = message.GetCorrelationId();
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(message.Value, eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(eventName))
+        {
+            eventData = new DynamicEventData(eventName, Serializer.Deserialize<object>(message.Value));
+            eventType = typeof(DynamicEventData);
+        }
+        else
+        {
+            return;
+        }
 
         if (await AddToInboxAsync(messageId, eventName, eventType, eventData, correlationId))
         {
@@ -114,6 +126,21 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         return new EventHandlerFactoryUnregistrar(this, eventType, factory);
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        var handlerFactories = GetOrCreateDynamicHandlerFactories(eventName);
+
+        if (handler.IsInFactories(handlerFactories))
+        {
+            return NullDisposable.Instance;
+        }
+
+        handlerFactories.Add(handler);
+
+        return new DynamicEventHandlerFactoryUnregistrar(this, eventName, handler);
+    }
+
     /// <inheritdoc/>
     public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
     {
@@ -168,6 +195,20 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         GetOrCreateHandlerFactories(eventType).Locking(factories => factories.Clear());
     }
 
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete);
+    }
+
     protected override async Task PublishToEventBusAsync(Type eventType, object eventData)
     {
         var headers = new Headers
@@ -278,12 +319,21 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         InboxConfig inboxConfig)
     {
         var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(incomingEvent.EventName))
+        {
+            eventData = new DynamicEventData(incomingEvent.EventName, Serializer.Deserialize<object>(incomingEvent.EventData));
+            eventType = typeof(DynamicEventData);
+        }
+        else
         {
             return;
         }
-
-        var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -302,8 +352,8 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 
     private async Task PublishAsync(string topicName, Type eventType, object eventData, Headers headers)
     {
-        var eventName = EventNameAttribute.GetNameOrDefault(eventType);
+        var (eventName, resolvedData) = ResolveEventForPublishing(eventType, eventData);
-        var body = Serializer.Serialize(eventData);
+        var body = Serializer.Serialize(resolvedData);
 
         var result = await PublishAsync(topicName, eventName, body, headers);
         if (result.Status != PersistenceStatus.Persisted)
@@ -332,7 +382,10 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 
     protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
     {
-        EventTypes.GetOrAdd(eventName, eventType);
+        if (typeof(DynamicEventData) != eventType)
+        {
+            EventTypes.GetOrAdd(eventName, eventType);
+        }
         return base.OnAddToOutboxAsync(eventName, eventType, eventData);
     }
 
@@ -352,17 +405,75 @@ public class KafkaDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
     {
         var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        var eventNames = EventTypes.Where(x => ShouldTriggerEventForHandler(eventType, x.Value)).Select(x => x.Key).ToList();
 
-        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key))
+        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
-        )
         {
-            handlerFactoryList.Add(
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
-                new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
+        }
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(aehf => eventNames.Contains(aehf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
         }
 
         return handlerFactoryList.ToArray();
     }
 
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory singleFactory &&
+                        singleFactory.HandlerInstance == handler
+                );
+            });
+    }
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Clear());
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var eventType = GetEventTypeByEventName(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        var result = new List<EventTypeWithEventHandlerFactories>();
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(hf => hf.Key == eventName))
+        {
+            result.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return result;
+    }
+
+    private List<IEventHandlerFactory> GetOrCreateDynamicHandlerFactories(string eventName)
+    {
+        return DynamicHandlerFactories.GetOrAdd(eventName, _ => new List<IEventHandlerFactory>());
+    }
+
     private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
     {
         //Should trigger same type

framework/src/Volo.Abp.EventBus.RabbitMQ/Volo/Abp/EventBus/RabbitMq/RabbitMqDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
@@ -33,6 +33,7 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
     //TODO: Accessing to the List<IEventHandlerFactory> may not be thread-safe!
     protected ConcurrentDictionary<Type, List<IEventHandlerFactory>> HandlerFactories { get; }
     protected ConcurrentDictionary<string, Type> EventTypes { get; }
+    protected ConcurrentDictionary<string, List<IEventHandlerFactory>> DynamicHandlerFactories { get; }
     protected IRabbitMqMessageConsumerFactory MessageConsumerFactory { get; }
     protected IRabbitMqMessageConsumer Consumer { get; private set; } = default!;
 
@@ -70,6 +71,7 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
 
         HandlerFactories = new ConcurrentDictionary<Type, List<IEventHandlerFactory>>();
         EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicHandlerFactories = new ConcurrentDictionary<string, List<IEventHandlerFactory>>();
     }
 
     public virtual void Initialize()
@@ -101,13 +103,23 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
     {
         var eventName = ea.RoutingKey;
         var eventType = EventTypes.GetOrDefault(eventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(ea.Body.ToArray(), eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(eventName))
+        {
+            var rawBytes = ea.Body.ToArray();
+            eventType = typeof(DynamicEventData);
+            eventData = new DynamicEventData(eventName, Serializer.Deserialize<object>(rawBytes));
+        }
+        else
         {
             return;
         }
 
-        var eventData = Serializer.Deserialize(ea.Body.ToArray(), eventType);
-
         var correlationId = ea.BasicProperties.CorrelationId;
         if (await AddToInboxAsync(ea.BasicProperties.MessageId, eventName, eventType, eventData, correlationId))
         {
@@ -139,6 +151,26 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
         return new EventHandlerFactoryUnregistrar(this, eventType, factory);
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        var handlerFactories = GetOrCreateDynamicHandlerFactories(eventName);
+        
+        if (handler.IsInFactories(handlerFactories))
+        {
+            return NullDisposable.Instance;
+        }
+        
+        handlerFactories.Add(handler);
+        
+        if (handlerFactories.Count == 1) //TODO: Multi-threading!
+        {
+            Consumer.BindAsync(eventName);
+        }
+
+        return new DynamicEventHandlerFactoryUnregistrar(this, eventName, handler);
+    }
+
     /// <inheritdoc/>
     public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
     {
@@ -193,6 +225,20 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
         GetOrCreateHandlerFactories(eventType).Locking(factories => factories.Clear());
     }
 
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete);
+    }
+
     protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
     {
         await PublishAsync(eventType, eventData, correlationId: CorrelationIdProvider.Get());
@@ -256,12 +302,21 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
         InboxConfig inboxConfig)
     {
         var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(incomingEvent.EventName))
+        {
+            eventData = new DynamicEventData(incomingEvent.EventName, Serializer.Deserialize<object>(incomingEvent.EventData));
+            eventType = typeof(DynamicEventData);
+        }
+        else
         {
             return;
         }
-
-        var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -285,8 +340,8 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
         Guid? eventId = null,
         string? correlationId = null)
     {
-        var eventName = EventNameAttribute.GetNameOrDefault(eventType);
+        var (eventName, resolvedData) = ResolveEventForPublishing(eventType, eventData);
-        var body = Serializer.Serialize(eventData);
+        var body = Serializer.Serialize(resolvedData);
 
         return PublishAsync(eventName, body, headersArguments, eventId, correlationId);
     }
@@ -382,7 +437,10 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
 
     protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
     {
-        EventTypes.GetOrAdd(eventName, eventType);
+        if (typeof(DynamicEventData) != eventType)
+        {
+            EventTypes.GetOrAdd(eventName, eventType);
+        }
         return base.OnAddToOutboxAsync(eventName, eventType, eventData);
     }
 
@@ -398,21 +456,79 @@ public class RabbitMqDistributedEventBus : DistributedEventBusBase, IRabbitMqDis
             }
         );
     }
-
+    
     protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
     {
         var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        var eventNames = EventTypes.Where(x => ShouldTriggerEventForHandler(eventType, x.Value)).Select(x => x.Key).ToList();
+
+        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
+        }
 
-        foreach (var handlerFactory in
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(aehf => eventNames.Contains(aehf.Key)))
-                 HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
         {
-            handlerFactoryList.Add(
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
-                new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
         }
 
         return handlerFactoryList.ToArray();
     }
 
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory singleFactory &&
+                        singleFactory.HandlerInstance == handler
+                );
+            });
+    }
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Clear());
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var result = new List<EventTypeWithEventHandlerFactories>();
+
+        var eventType = GetEventTypeByEventName(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(hf => hf.Key == eventName))
+        {
+            result.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return result;
+    }
+
+    private List<IEventHandlerFactory> GetOrCreateDynamicHandlerFactories(string eventName)
+    {
+        return DynamicHandlerFactories.GetOrAdd(eventName, _ => new List<IEventHandlerFactory>());
+    }
+
     private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
     {
         //Should trigger same type

framework/src/Volo.Abp.EventBus.Rebus/Volo/Abp/EventBus/Rebus/RebusDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
@@ -31,6 +31,7 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     //TODO: Accessing to the List<IEventHandlerFactory> may not be thread-safe!
     protected ConcurrentDictionary<Type, List<IEventHandlerFactory>> HandlerFactories { get; }
     protected ConcurrentDictionary<string, Type> EventTypes { get; }
+    protected ConcurrentDictionary<string, List<IEventHandlerFactory>> DynamicHandlerFactories { get; }
     protected AbpRebusEventBusOptions AbpRebusEventBusOptions { get; }
 
     public RebusDistributedEventBus(
@@ -63,6 +64,7 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 
         HandlerFactories = new ConcurrentDictionary<Type, List<IEventHandlerFactory>>();
         EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicHandlerFactories = new ConcurrentDictionary<string, List<IEventHandlerFactory>>();
     }
 
     public void Initialize()
@@ -70,6 +72,31 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         SubscribeHandlers(AbpDistributedEventBusOptions.Handlers);
     }
 
+    public async Task ProcessEventAsync(Type eventType, object eventData)
+    {
+        var messageId = MessageContext.Current.TransportMessage.GetMessageId();
+        string eventName;
+        if (eventType == typeof(DynamicEventData) && eventData is DynamicEventData dynamicEventData)
+        {
+            eventName = dynamicEventData.EventName;
+        }
+        else
+        {
+            eventName = EventNameAttribute.GetNameOrDefault(eventType);
+        }
+        var correlationId = MessageContext.Current.Headers.GetOrDefault(EventBusConsts.CorrelationIdHeaderName);
+
+        if (await AddToInboxAsync(messageId, eventName, eventType, eventData, correlationId))
+        {
+            return;
+        }
+
+        using (CorrelationIdProvider.Change(correlationId))
+        {
+            await TriggerHandlersDirectAsync(eventType, eventData);
+        }
+    }
+
     public override IDisposable Subscribe(Type eventType, IEventHandlerFactory factory)
     {
         var handlerFactories = GetOrCreateHandlerFactories(eventType);
@@ -89,6 +116,26 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         return new EventHandlerFactoryUnregistrar(this, eventType, factory);
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        var handlerFactories = GetOrCreateDynamicHandlerFactories(eventName);
+
+        if (handler.IsInFactories(handlerFactories))
+        {
+            return NullDisposable.Instance;
+        }
+
+        handlerFactories.Add(handler);
+        
+        if (DynamicHandlerFactories.Count == 1) //TODO: Multi-threading!
+        {
+            Rebus.Subscribe(typeof(DynamicEventData));
+        }
+
+        return new DynamicEventHandlerFactoryUnregistrar(this, eventName, handler);
+    }
+
     public override void Unsubscribe<TEvent>(Func<TEvent, Task> action)
     {
         Check.NotNull(action, nameof(action));
@@ -143,21 +190,18 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         Rebus.Unsubscribe(eventType);
     }
 
-    public async Task ProcessEventAsync(Type eventType, object eventData)
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
     {
-        var messageId = MessageContext.Current.TransportMessage.GetMessageId();
+        var eventType = EventTypes.GetOrDefault(eventName);
-        var eventName = EventNameAttribute.GetNameOrDefault(eventType);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
-        var correlationId = MessageContext.Current.Headers.GetOrDefault(EventBusConsts.CorrelationIdHeaderName);
 
-        if (await AddToInboxAsync(messageId, eventName, eventType, eventData, correlationId))
+        if (eventType != null)
         {
-            return;
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
         }
 
-        using (CorrelationIdProvider.Change(correlationId))
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete);
-        {
-            await TriggerHandlersDirectAsync(eventType, eventData);
-        }
     }
 
     protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
@@ -170,94 +214,32 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         await PublishAsync(eventType, eventData, headersArguments: headers);
     }
 
-    protected virtual async Task PublishAsync(
-        Type eventType,
-        object eventData,
-        Guid? eventId = null,
-        Dictionary<string, string>? headersArguments = null)
-    {
-        if (AbpRebusEventBusOptions.Publish != null)
-        {
-            await AbpRebusEventBusOptions.Publish(Rebus, eventType, eventData);
-            return;
-        }
-
-        headersArguments ??= new Dictionary<string, string>();
-        if (!headersArguments.ContainsKey(Headers.MessageId))
-        {
-            headersArguments[Headers.MessageId] = (eventId ?? GuidGenerator.Create()).ToString("N");
-        }
-
-        await Rebus.Publish(eventData, headersArguments);
-    }
-
     protected override void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord)
     {
         unitOfWork.AddOrReplaceDistributedEvent(eventRecord);
     }
 
-    protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
+    public async override Task PublishFromOutboxAsync(
-    {
+        OutgoingEventInfo outgoingEvent,
-        EventTypes.GetOrAdd(eventName, eventType);
+        OutboxConfig outboxConfig)
-        return base.OnAddToOutboxAsync(eventName, eventType, eventData);
-    }
-
-    private List<IEventHandlerFactory> GetOrCreateHandlerFactories(Type eventType)
-    {
-        return HandlerFactories.GetOrAdd(
-            eventType,
-            type =>
-            {
-                var eventName = EventNameAttribute.GetNameOrDefault(type);
-                EventTypes.GetOrAdd(eventName, eventType);
-                return new List<IEventHandlerFactory>();
-            }
-        );
-    }
-
-    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
     {
-        var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        var eventType = EventTypes.GetOrDefault(outgoingEvent.EventName);
+        object eventData;
 
-        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key))
+        if (eventType != null)
-        )
         {
-            handlerFactoryList.Add(
+            eventData = Serializer.Deserialize(outgoingEvent.EventData, eventType);
-                new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
         }
-
+        else if (DynamicHandlerFactories.ContainsKey(outgoingEvent.EventName))
-        return handlerFactoryList.ToArray();
-    }
-
-    private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
-    {
-        //Should trigger same type
-        if (handlerEventType == targetEventType)
         {
-            return true;
+            eventData = new DynamicEventData(outgoingEvent.EventName, Serializer.Deserialize(outgoingEvent.EventData, typeof(object)));
+            eventType = typeof(DynamicEventData);
         }
-
+        else
-        //Should trigger for inherited types
-        if (handlerEventType.IsAssignableFrom(targetEventType))
-        {
-            return true;
-        }
-
-        return false;
-    }
-
-    public async override Task PublishFromOutboxAsync(
-        OutgoingEventInfo outgoingEvent,
-        OutboxConfig outboxConfig)
-    {
-        var eventType = EventTypes.GetOrDefault(outgoingEvent.EventName);
-        if (eventType == null)
         {
             return;
         }
 
-        var eventData = Serializer.Deserialize(outgoingEvent.EventData, eventType);
-
         var headers = new Dictionary<string, string>();
         if (outgoingEvent.GetCorrelationId() != null)
         {
@@ -306,12 +288,21 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         InboxConfig inboxConfig)
     {
         var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
-        if (eventType == null)
+        object eventData;
+
+        if (eventType != null)
+        {
+            eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
+        }
+        else if (DynamicHandlerFactories.ContainsKey(incomingEvent.EventName))
+        {
+            eventData = new DynamicEventData(incomingEvent.EventName, Serializer.Deserialize(incomingEvent.EventData, typeof(object)));
+            eventType = typeof(DynamicEventData);
+        }
+        else
         {
             return;
         }
-
-        var eventData = Serializer.Deserialize(incomingEvent.EventData, eventType);
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -327,4 +318,136 @@ public class RebusDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     {
         return Serializer.Serialize(eventData);
     }
+
+    protected virtual async Task PublishAsync(
+        Type eventType,
+        object eventData,
+        Guid? eventId = null,
+        Dictionary<string, string>? headersArguments = null)
+    {
+        if (AbpRebusEventBusOptions.Publish != null)
+        {
+            await AbpRebusEventBusOptions.Publish(Rebus, eventType, eventData);
+            return;
+        }
+
+        headersArguments ??= new Dictionary<string, string>();
+        if (!headersArguments.ContainsKey(Headers.MessageId))
+        {
+            headersArguments[Headers.MessageId] = (eventId ?? GuidGenerator.Create()).ToString("N");
+        }
+
+        await Rebus.Publish(eventData, headersArguments);
+    }
+
+    protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
+    {
+        if (typeof(DynamicEventData) != eventType)
+        {
+            EventTypes.GetOrAdd(eventName, eventType);
+        }
+        return base.OnAddToOutboxAsync(eventName, eventType, eventData);
+    }
+
+    private List<IEventHandlerFactory> GetOrCreateHandlerFactories(Type eventType)
+    {
+        return HandlerFactories.GetOrAdd(
+            eventType,
+            type =>
+            {
+                var eventName = EventNameAttribute.GetNameOrDefault(type);
+                EventTypes.GetOrAdd(eventName, eventType);
+                return new List<IEventHandlerFactory>();
+            }
+        );
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
+    {
+        var handlerFactoryList = new List<EventTypeWithEventHandlerFactories>();
+        var eventNames = EventTypes.Where(x => ShouldTriggerEventForHandler(eventType, x.Value)).Select(x => x.Key).ToList();
+
+        foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(handlerFactory.Key, handlerFactory.Value));
+        }
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(aehf => eventNames.Contains(aehf.Key)))
+        {
+            handlerFactoryList.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return handlerFactoryList.ToArray();
+    }
+
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory singleFactory &&
+                        singleFactory.HandlerInstance == handler
+                );
+            });
+    }
+
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Clear());
+    }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var eventType = GetEventTypeByEventName(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        var result = new List<EventTypeWithEventHandlerFactories>();
+
+        foreach (var handlerFactory in DynamicHandlerFactories.Where(hf => hf.Key == eventName))
+        {
+            result.Add(new EventTypeWithEventHandlerFactories(typeof(DynamicEventData), handlerFactory.Value));
+        }
+
+        return result;
+    }
+
+    private List<IEventHandlerFactory> GetOrCreateDynamicHandlerFactories(string eventName)
+    {
+        return DynamicHandlerFactories.GetOrAdd(eventName, _ => new List<IEventHandlerFactory>());
+    }
+
+    private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
+    {
+        //Should trigger same type
+        if (handlerEventType == targetEventType)
+        {
+            return true;
+        }
+
+        //Should trigger for inherited types
+        if (handlerEventType.IsAssignableFrom(targetEventType))
+        {
+            return true;
+        }
+
+        return false;
+    }
 }

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/DistributedEventBusBase.cs

@@ -43,16 +43,25 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
         CorrelationIdProvider = correlationIdProvider;
     }
 
+    /// <inheritdoc/>
     public virtual IDisposable Subscribe<TEvent>(IDistributedEventHandler<TEvent> handler) where TEvent : class
     {
         return Subscribe(typeof(TEvent), handler);
     }
 
+    /// <inheritdoc/>
+    public virtual IDisposable Subscribe(string eventName, IDistributedEventHandler<DynamicEventData> handler)
+    {
+        return Subscribe(eventName, (IEventHandler)handler);
+    }
+
+    /// <inheritdoc/>
     public override Task PublishAsync(Type eventType, object eventData, bool onUnitOfWorkComplete = true)
     {
         return PublishAsync(eventType, eventData, onUnitOfWorkComplete, useOutbox: true);
     }
 
+    /// <inheritdoc/>
     public virtual Task PublishAsync<TEvent>(
         TEvent eventData,
         bool onUnitOfWorkComplete = true,
@@ -62,6 +71,7 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
         return PublishAsync(typeof(TEvent), eventData, onUnitOfWorkComplete, useOutbox);
     }
 
+    /// <inheritdoc/>
     public virtual async Task PublishAsync(
         Type eventType,
         object eventData,
@@ -90,11 +100,29 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
         await TriggerDistributedEventSentAsync(new DistributedEventSent()
         {
             Source = DistributedEventSource.Direct,
-            EventName = EventNameAttribute.GetNameOrDefault(eventType),
+            EventName = GetEventName(eventType, eventData),
-            EventData = eventData
+            EventData = GetEventData(eventData)
         });
     }
 
+    /// <inheritdoc/>
+    public virtual Task PublishAsync(
+        string eventName,
+        object eventData,
+        bool onUnitOfWorkComplete = true,
+        bool useOutbox = true)
+    {
+        var eventType = GetEventTypeByEventName(eventName);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete, useOutbox);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete, useOutbox);
+    }
+
     public abstract Task PublishFromOutboxAsync(
         OutgoingEventInfo outgoingEvent,
         OutboxConfig outboxConfig
@@ -124,7 +152,7 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
             if (outboxConfig.Selector == null || outboxConfig.Selector(eventType))
             {
                 var eventOutbox = (IEventOutbox)unitOfWork.ServiceProvider.GetRequiredService(outboxConfig.ImplementationType);
-                var eventName = EventNameAttribute.GetNameOrDefault(eventType);
+                (var eventName, eventData) = ResolveEventForPublishing(eventType, eventData);
 
                 await OnAddToOutboxAsync(eventName, eventType, eventData);
 
@@ -181,12 +209,12 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
                     {
                         if (await eventInbox.ExistsByMessageIdAsync(messageId!))
                         {
-                            // Message already exists in the inbox, no need to add again.
-                            // This can happen in case of retries from the sender side.
                             addToInbox = true;
                             continue;
                         }
                     }
+                    
+                    eventData = GetEventData(eventData);
 
                     var incomingEventInfo = new IncomingEventInfo(
                         GuidGenerator.Create(),
@@ -212,8 +240,8 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
         await TriggerDistributedEventReceivedAsync(new DistributedEventReceived
         {
             Source = DistributedEventSource.Direct,
-            EventName = EventNameAttribute.GetNameOrDefault(eventType),
+            EventName = GetEventName(eventType, eventData),
-            EventData = eventData
+            EventData = GetEventData(eventData)
         });
 
         await TriggerHandlersAsync(eventType, eventData);
@@ -224,8 +252,8 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
         await TriggerDistributedEventReceivedAsync(new DistributedEventReceived
         {
             Source = DistributedEventSource.Inbox,
-            EventName = EventNameAttribute.GetNameOrDefault(eventType),
+            EventName = GetEventName(eventType, eventData),
-            EventData = eventData
+            EventData = GetEventData(eventData)
         });
 
         await TriggerHandlersAsync(eventType, eventData, exceptions, inboxConfig);
@@ -254,4 +282,29 @@ public abstract class DistributedEventBusBase : EventBusBase, IDistributedEventB
             // ignored
         }
     }
+
+    protected virtual string GetEventName(Type eventType, object eventData)
+    {
+        if (eventData is DynamicEventData dynamicEventData)
+        {
+            return dynamicEventData.EventName;
+        }
+
+        return EventNameAttribute.GetNameOrDefault(eventType);
+    }
+
+    protected virtual object GetEventData(object eventData)
+    {
+        if (eventData is DynamicEventData dynamicEventData)
+        {
+            return dynamicEventData.Data;
+        }
+
+        return eventData;
+    }
+
+    protected virtual (string EventName, object EventData) ResolveEventForPublishing(Type eventType, object eventData)
+    {
+        return (GetEventName(eventType, eventData), GetEventData(eventData));
+    }
 }

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/LocalDistributedEventBus.cs

@@ -3,9 +3,7 @@ using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
-using System.Text;
 using System.Text.Json;
-using System.Text.Unicode;
 using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
@@ -26,6 +24,8 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 {
     protected ConcurrentDictionary<string, Type> EventTypes { get; }
 
+    protected ConcurrentDictionary<string, bool> DynamicEventNames { get; }
+
     public LocalDistributedEventBus(
         IServiceScopeFactory serviceScopeFactory,
         ICurrentTenant currentTenant,
@@ -47,6 +47,7 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
             correlationIdProvider)
     {
         EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicEventNames = new ConcurrentDictionary<string, bool>();
         Subscribe(abpDistributedEventBusOptions.Value.Handlers);
     }
 
@@ -71,6 +72,14 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         }
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        DynamicEventNames.GetOrAdd(eventName, true);
+        return LocalEventBus.Subscribe(eventName, handler);
+    }
+
+    /// <inheritdoc/>
     public override IDisposable Subscribe(Type eventType, IEventHandlerFactory factory)
     {
         var eventName = EventNameAttribute.GetNameOrDefault(eventType);
@@ -93,11 +102,31 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         LocalEventBus.Unsubscribe(eventType, factory);
     }
 
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        LocalEventBus.Unsubscribe(eventName, factory);
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        LocalEventBus.Unsubscribe(eventName, handler);
+    }
+
+    /// <inheritdoc/>
     public override void UnsubscribeAll(Type eventType)
     {
         LocalEventBus.UnsubscribeAll(eventType);
     }
 
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        LocalEventBus.UnsubscribeAll(eventName);
+    }
+
+    /// <inheritdoc/>
     public async override Task PublishAsync(Type eventType, object eventData, bool onUnitOfWorkComplete = true, bool useOutbox = true)
     {
         if (onUnitOfWorkComplete && UnitOfWorkManager.Current != null)
@@ -120,23 +149,43 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         await TriggerDistributedEventSentAsync(new DistributedEventSent()
         {
             Source = DistributedEventSource.Direct,
-            EventName = EventNameAttribute.GetNameOrDefault(eventType),
+            EventName = GetEventName(eventType, eventData),
-            EventData = eventData
+            EventData = GetEventData(eventData)
         });
 
         await TriggerDistributedEventReceivedAsync(new DistributedEventReceived
         {
             Source = DistributedEventSource.Direct,
-            EventName = EventNameAttribute.GetNameOrDefault(eventType),
+            EventName = GetEventName(eventType, eventData),
-            EventData = eventData
+            EventData = GetEventData(eventData)
         });
 
         await PublishToEventBusAsync(eventType, eventData);
     }
 
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        return PublishAsync(eventName, eventData, onUnitOfWorkComplete, useOutbox: true);
+    }
+
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true, bool useOutbox = true)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete, useOutbox);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete, useOutbox);
+    }
+
     protected async override Task PublishToEventBusAsync(Type eventType, object eventData)
     {
-        if (await AddToInboxAsync(Guid.NewGuid().ToString(), EventNameAttribute.GetNameOrDefault(eventType), eventType, eventData, null))
+        if (await AddToInboxAsync(Guid.NewGuid().ToString(), GetEventName(eventType, eventData), eventType, eventData, null))
         {
             return;
         }
@@ -168,10 +217,27 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         var eventType = EventTypes.GetOrDefault(outgoingEvent.EventName);
         if (eventType == null)
         {
-            return;
+            var isDynamic = DynamicEventNames.ContainsKey(outgoingEvent.EventName);
+            if (!isDynamic)
+            {
+                return;
+            }
+
+            eventType = typeof(DynamicEventData);
+        }
+
+        object eventData;
+        if (eventType == typeof(DynamicEventData))
+        {
+            eventData = new DynamicEventData(
+                outgoingEvent.EventName,
+                System.Text.Json.JsonSerializer.Deserialize<object>(outgoingEvent.EventData)!);
+        }
+        else
+        {
+            eventData = System.Text.Json.JsonSerializer.Deserialize(outgoingEvent.EventData, eventType)!;
         }
 
-        var eventData = JsonSerializer.Deserialize(Encoding.UTF8.GetString(outgoingEvent.EventData), eventType)!;
         if (await AddToInboxAsync(Guid.NewGuid().ToString(), outgoingEvent.EventName, eventType, eventData, null))
         {
             return;
@@ -193,10 +259,27 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
         var eventType = EventTypes.GetOrDefault(incomingEvent.EventName);
         if (eventType == null)
         {
-            return;
+            var isDynamic = DynamicEventNames.ContainsKey(incomingEvent.EventName);
+            if (!isDynamic)
+            {
+                return;
+            }
+
+            eventType = typeof(DynamicEventData);
+        }
+
+        object eventData;
+        if (eventType == typeof(DynamicEventData))
+        {
+            eventData = new DynamicEventData(
+                incomingEvent.EventName,
+                System.Text.Json.JsonSerializer.Deserialize<object>(incomingEvent.EventData)!);
+        }
+        else
+        {
+            eventData = System.Text.Json.JsonSerializer.Deserialize(incomingEvent.EventData, eventType)!;
         }
 
-        var eventData = JsonSerializer.Deserialize(incomingEvent.EventData, eventType);
         var exceptions = new List<Exception>();
         using (CorrelationIdProvider.Change(incomingEvent.GetCorrelationId()))
         {
@@ -210,12 +293,15 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
 
     protected override byte[] Serialize(object eventData)
     {
-        return Encoding.UTF8.GetBytes(JsonSerializer.Serialize(eventData));
+        return System.Text.Json.JsonSerializer.SerializeToUtf8Bytes(eventData);
     }
 
     protected override Task OnAddToOutboxAsync(string eventName, Type eventType, object eventData)
     {
-        EventTypes.GetOrAdd(eventName, eventType);
+        if (eventType != typeof(DynamicEventData))
+        {
+            EventTypes.GetOrAdd(eventName, eventType);
+        }
         return base.OnAddToOutboxAsync(eventName, eventType, eventData);
     }
 
@@ -223,4 +309,14 @@ public class LocalDistributedEventBus : DistributedEventBusBase, ISingletonDepen
     {
         return LocalEventBus.GetEventHandlerFactories(eventType);
     }
+
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        return LocalEventBus.GetDynamicEventHandlerFactories(eventName);
+    }
+
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
 }

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Distributed/NullDistributedEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Threading.Tasks;
 
 namespace Volo.Abp.EventBus.Distributed;
@@ -12,6 +12,12 @@ public sealed class NullDistributedEventBus : IDistributedEventBus
 
     }
 
+    /// <inheritdoc/>
+    public Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        return Task.CompletedTask;
+    }
+
     public IDisposable Subscribe<TEvent>(Func<TEvent, Task> action) where TEvent : class
     {
         return NullDisposable.Instance;
@@ -32,6 +38,24 @@ public sealed class NullDistributedEventBus : IDistributedEventBus
         return NullDisposable.Instance;
     }
 
+    /// <inheritdoc/>
+    public IDisposable Subscribe(string eventName, IEventHandler handler)
+    {
+        return NullDisposable.Instance;
+    }
+
+    /// <inheritdoc/>
+    public IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        return NullDisposable.Instance;
+    }
+
+    /// <inheritdoc/>
+    public IDisposable Subscribe(string eventName, IDistributedEventHandler<DynamicEventData> handler)
+    {
+        return NullDisposable.Instance;
+    }
+
     public IDisposable Subscribe<TEvent>(IEventHandlerFactory factory) where TEvent : class
     {
         return NullDisposable.Instance;
@@ -67,6 +91,16 @@ public sealed class NullDistributedEventBus : IDistributedEventBus
 
     }
 
+    /// <inheritdoc/>
+    public void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+    }
+
+    /// <inheritdoc/>
+    public void Unsubscribe(string eventName, IEventHandler handler)
+    {
+    }
+
     public void UnsubscribeAll<TEvent>() where TEvent : class
     {
 
@@ -74,7 +108,11 @@ public sealed class NullDistributedEventBus : IDistributedEventBus
 
     public void UnsubscribeAll(Type eventType)
     {
+    }
 
+    /// <inheritdoc/>
+    public void UnsubscribeAll(string eventName)
+    {
     }
 
     public Task PublishAsync<TEvent>(TEvent eventData, bool onUnitOfWorkComplete = true) where TEvent : class
@@ -96,4 +134,10 @@ public sealed class NullDistributedEventBus : IDistributedEventBus
     {
         return Task.CompletedTask;
     }
+
+    /// <inheritdoc/>
+    public Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true, bool useOutbox = true)
+    {
+        return Task.CompletedTask;
+    }
 }

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventBusBase.cs

@@ -9,6 +9,7 @@ using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Collections;
 using Volo.Abp.DynamicProxy;
 using Volo.Abp.EventBus.Distributed;
+using Volo.Abp.Json;
 using Volo.Abp.MultiTenancy;
 using Volo.Abp.Reflection;
 using Volo.Abp.Uow;
@@ -57,6 +58,15 @@ public abstract class EventBusBase : IEventBus
         return Subscribe(eventType, new SingleInstanceHandlerFactory(handler));
     }
 
+    /// <inheritdoc/>
+    public virtual IDisposable Subscribe(string eventName, IEventHandler handler)
+    {
+        return Subscribe(eventName, new SingleInstanceHandlerFactory(handler));
+    }
+
+    /// <inheritdoc/>
+    public abstract IDisposable Subscribe(string eventName, IEventHandlerFactory handler);
+
     /// <inheritdoc/>
     public virtual IDisposable Subscribe<TEvent>(IEventHandlerFactory factory) where TEvent : class
     {
@@ -83,6 +93,12 @@ public abstract class EventBusBase : IEventBus
 
     public abstract void Unsubscribe(Type eventType, IEventHandlerFactory factory);
 
+    /// <inheritdoc/>
+    public abstract void Unsubscribe(string eventName, IEventHandlerFactory factory);
+
+    /// <inheritdoc/>
+    public abstract void Unsubscribe(string eventName, IEventHandler handler);
+
     /// <inheritdoc/>
     public virtual void UnsubscribeAll<TEvent>() where TEvent : class
     {
@@ -92,6 +108,9 @@ public abstract class EventBusBase : IEventBus
     /// <inheritdoc/>
     public abstract void UnsubscribeAll(Type eventType);
 
+    /// <inheritdoc/>
+    public abstract void UnsubscribeAll(string eventName);
+
     /// <inheritdoc/>
     public Task PublishAsync<TEvent>(TEvent eventData, bool onUnitOfWorkComplete = true)
         where TEvent : class
@@ -117,6 +136,9 @@ public abstract class EventBusBase : IEventBus
         await PublishToEventBusAsync(eventType, eventData);
     }
 
+    /// <inheritdoc/>
+    public abstract Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true);
+
     protected abstract Task PublishToEventBusAsync(Type eventType, object eventData);
 
     protected abstract void AddToUnitOfWork(IUnitOfWork unitOfWork, UnitOfWorkEventRecord eventRecord);
@@ -137,31 +159,81 @@ public abstract class EventBusBase : IEventBus
     {
         await new SynchronizationContextRemover();
 
-        foreach (var handlerFactories in GetHandlerFactories(eventType).ToList())
+        var (handlerFactoriesList, actualEventType) = ResolveHandlerFactories(eventType, eventData);
+
+        foreach (var handlerFactories in handlerFactoriesList)
         {
             foreach (var handlerFactory in handlerFactories.EventHandlerFactories.ToList())
             {
-                await TriggerHandlerAsync(handlerFactory, handlerFactories.EventType, eventData, exceptions, inboxConfig);
+                var resolvedEventData = ResolveEventDataForHandler(eventData, eventType, handlerFactories.EventType);
+                await TriggerHandlerAsync(handlerFactory, handlerFactories.EventType, resolvedEventData, exceptions, inboxConfig);
             }
         }
 
-        //Implements generic argument inheritance. See IEventDataWithInheritableGenericArgument
+        if (actualEventType != null &&
-        if (eventType.GetTypeInfo().IsGenericType &&
+            actualEventType.GetTypeInfo().IsGenericType &&
-            eventType.GetGenericArguments().Length == 1 &&
+            actualEventType.GetGenericArguments().Length == 1 &&
-            typeof(IEventDataWithInheritableGenericArgument).IsAssignableFrom(eventType))
+            typeof(IEventDataWithInheritableGenericArgument).IsAssignableFrom(actualEventType))
         {
-            var genericArg = eventType.GetGenericArguments()[0];
+            var resolvedEventData = eventData is DynamicEventData aed
+                ? ConvertDynamicEventData(aed.Data, actualEventType)
+                : eventData;
+
+            var genericArg = actualEventType.GetGenericArguments()[0];
             var baseArg = genericArg.GetTypeInfo().BaseType;
             if (baseArg != null)
             {
-                var baseEventType = eventType.GetGenericTypeDefinition().MakeGenericType(baseArg);
+                var baseEventType = actualEventType.GetGenericTypeDefinition().MakeGenericType(baseArg);
-                var constructorArgs = ((IEventDataWithInheritableGenericArgument)eventData).GetConstructorArgs();
+                var constructorArgs = ((IEventDataWithInheritableGenericArgument)resolvedEventData).GetConstructorArgs();
                 var baseEventData = Activator.CreateInstance(baseEventType, constructorArgs)!;
                 await PublishToEventBusAsync(baseEventType, baseEventData);
             }
         }
     }
 
+    protected virtual (List<EventTypeWithEventHandlerFactories> Factories, Type? ActualEventType) ResolveHandlerFactories(
+        Type eventType,
+        object eventData)
+    {
+        if (eventData is DynamicEventData dynamicEventData)
+        {
+            return (
+                GetDynamicHandlerFactories(dynamicEventData.EventName).ToList(),
+                GetEventTypeByEventName(dynamicEventData.EventName)
+            );
+        }
+
+        return (GetHandlerFactories(eventType).ToList(), eventType);
+    }
+
+    protected virtual object ResolveEventDataForHandler(object eventData, Type sourceEventType, Type handlerEventType)
+    {
+        if (eventData is DynamicEventData dynamicEventData && handlerEventType != typeof(DynamicEventData))
+        {
+            return ConvertDynamicEventData(dynamicEventData.Data, handlerEventType);
+        }
+
+        if (handlerEventType == typeof(DynamicEventData) && eventData is not DynamicEventData)
+        {
+            return new DynamicEventData(EventNameAttribute.GetNameOrDefault(sourceEventType), eventData);
+        }
+
+        return eventData;
+    }
+
+    protected virtual object ConvertDynamicEventData(object data, Type targetType)
+    {
+        if (targetType.IsInstanceOfType(data))
+        {
+            return data;
+        }
+
+        using var scope = ServiceScopeFactory.CreateScope();
+        var jsonSerializer = scope.ServiceProvider.GetRequiredService<IJsonSerializer>();
+        var json = jsonSerializer.Serialize(data);
+        return jsonSerializer.Deserialize(targetType, json);
+    }
+
     protected void ThrowOriginalExceptions(Type eventType, List<Exception> exceptions)
     {
         if (exceptions.Count == 1)
@@ -198,6 +270,10 @@ public abstract class EventBusBase : IEventBus
 
     protected abstract IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType);
 
+    protected abstract IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName);
+
+    protected abstract Type? GetEventTypeByEventName(string eventName);
+
     protected virtual async Task TriggerHandlerAsync(IEventHandlerFactory asyncHandlerFactory, Type eventType,
         object eventData, List<Exception> exceptions, InboxConfig? inboxConfig = null)
     {

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/EventHandlerFactoryUnregistrar.cs

@@ -23,3 +23,25 @@ public class EventHandlerFactoryUnregistrar : IDisposable
         _eventBus.Unsubscribe(_eventType, _factory);
     }
 }
+
+/// <summary>
+/// Used to unregister an <see cref="IEventHandlerFactory"/> for a string-based event name on <see cref="IDisposable.Dispose"/> method.
+/// </summary>
+public class DynamicEventHandlerFactoryUnregistrar : IDisposable
+{
+    private readonly IEventBus _eventBus;
+    private readonly string _eventName;
+    private readonly IEventHandlerFactory _factory;
+
+    public DynamicEventHandlerFactoryUnregistrar(IEventBus eventBus, string eventName, IEventHandlerFactory factory)
+    {
+        _eventBus = eventBus;
+        _eventName = eventName;
+        _factory = factory;
+    }
+
+    public void Dispose()
+    {
+        _eventBus.Unsubscribe(_eventName, _factory);
+    }
+}

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Local/LocalEventBus.cs

@@ -30,6 +30,10 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
 
     protected ConcurrentDictionary<Type, List<IEventHandlerFactory>> HandlerFactories { get; }
 
+    protected ConcurrentDictionary<string, Type> EventTypes { get; }
+
+    protected ConcurrentDictionary<string, List<IEventHandlerFactory>> DynamicEventHandlerFactories { get; }
+
     public LocalEventBus(
         IOptions<AbpLocalEventBusOptions> options,
         IServiceScopeFactory serviceScopeFactory,
@@ -42,6 +46,8 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
         Logger = NullLogger<LocalEventBus>.Instance;
 
         HandlerFactories = new ConcurrentDictionary<Type, List<IEventHandlerFactory>>();
+        EventTypes = new ConcurrentDictionary<string, Type>();
+        DynamicEventHandlerFactories = new ConcurrentDictionary<string, List<IEventHandlerFactory>>();
         SubscribeHandlers(Options.Handlers);
     }
 
@@ -51,9 +57,25 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
         return Subscribe(typeof(TEvent), handler);
     }
 
+    /// <inheritdoc/>
+    public override IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories =>
+        {
+            if (!handler.IsInFactories(factories))
+            {
+                factories.Add(handler);
+            }
+        });
+
+        return new DynamicEventHandlerFactoryUnregistrar(this, eventName, handler);
+    }
+
     /// <inheritdoc/>
     public override IDisposable Subscribe(Type eventType, IEventHandlerFactory factory)
     {
+        EventTypes.GetOrAdd(EventNameAttribute.GetNameOrDefault(eventType), eventType);
+
         GetOrCreateHandlerFactories(eventType)
             .Locking(factories =>
                 {
@@ -115,12 +137,53 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
         GetOrCreateHandlerFactories(eventType).Locking(factories => factories.Remove(factory));
     }
 
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Remove(factory));
+    }
+
+    /// <inheritdoc/>
+    public override void Unsubscribe(string eventName, IEventHandler handler)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName)
+            .Locking(factories =>
+            {
+                factories.RemoveAll(
+                    factory =>
+                        factory is SingleInstanceHandlerFactory singleFactory &&
+                        singleFactory.HandlerInstance == handler
+                );
+            });
+    }
+
     /// <inheritdoc/>
     public override void UnsubscribeAll(Type eventType)
     {
         GetOrCreateHandlerFactories(eventType).Locking(factories => factories.Clear());
     }
 
+    /// <inheritdoc/>
+    public override void UnsubscribeAll(string eventName)
+    {
+        GetOrCreateDynamicHandlerFactories(eventName).Locking(factories => factories.Clear());
+    }
+
+    /// <inheritdoc/>
+    public override Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+
+        var dynamicEventData = eventData as DynamicEventData ?? new DynamicEventData(eventName, eventData);
+
+        if (eventType != null)
+        {
+            return PublishAsync(eventType, ConvertDynamicEventData(dynamicEventData.Data, eventType), onUnitOfWorkComplete);
+        }
+
+        return PublishAsync(typeof(DynamicEventData), dynamicEventData, onUnitOfWorkComplete);
+    }
+
     protected override async Task PublishToEventBusAsync(Type eventType, object eventData)
     {
         await PublishAsync(new LocalEventMessage(Guid.NewGuid(), eventData, eventType));
@@ -141,9 +204,17 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
         return GetHandlerFactories(eventType).ToList();
     }
 
+    /// <inheritdoc/>
+    public virtual List<EventTypeWithEventHandlerFactories> GetDynamicEventHandlerFactories(string eventName)
+    {
+        return GetDynamicHandlerFactories(eventName).ToList();
+    }
+
     protected override IEnumerable<EventTypeWithEventHandlerFactories> GetHandlerFactories(Type eventType)
     {
         var handlerFactoryList = new List<Tuple<IEventHandlerFactory, Type, int>>();
+        var eventNames = EventTypes.Where(x => ShouldTriggerEventForHandler(eventType, x.Value)).Select(x => x.Key).ToList();
+
         foreach (var handlerFactory in HandlerFactories.Where(hf => ShouldTriggerEventForHandler(eventType, hf.Key)))
         {
             foreach (var factory in handlerFactory.Value)
@@ -155,23 +226,71 @@ public class LocalEventBus : EventBusBase, ILocalEventBus, ISingletonDependency
             }
         }
 
+        foreach (var handlerFactory in DynamicEventHandlerFactories.Where(aehf => eventNames.Contains(aehf.Key)))
+        {
+            foreach (var factory in handlerFactory.Value)
+            {
+                handlerFactoryList.Add(new Tuple<IEventHandlerFactory, Type, int>(
+                    factory,
+                    typeof(DynamicEventData),
+                    ReflectionHelper.GetAttributesOfMemberOrDeclaringType<LocalEventHandlerOrderAttribute>(factory.GetHandler().EventHandler.GetType()).FirstOrDefault()?.Order ?? 0));
+            }
+        }
+
         return handlerFactoryList.OrderBy(x => x.Item3).Select(x => new EventTypeWithEventHandlerFactories(x.Item2, new List<IEventHandlerFactory> {x.Item1})).ToArray();
     }
 
+    protected override IEnumerable<EventTypeWithEventHandlerFactories> GetDynamicHandlerFactories(string eventName)
+    {
+        var eventType = EventTypes.GetOrDefault(eventName);
+        if (eventType != null)
+        {
+            return GetHandlerFactories(eventType);
+        }
+
+        var handlerFactoryList = new List<Tuple<IEventHandlerFactory, Type, int>>();
+
+        foreach (var handlerFactory in DynamicEventHandlerFactories.Where(aehf => aehf.Key == eventName))
+        {
+            foreach (var factory in handlerFactory.Value)
+            {
+                using var handler = factory.GetHandler();
+                var handlerType = handler.EventHandler.GetType();
+                handlerFactoryList.Add(new Tuple<IEventHandlerFactory, Type, int>(
+                    factory,
+                    typeof(DynamicEventData),
+                    ReflectionHelper
+                        .GetAttributesOfMemberOrDeclaringType<LocalEventHandlerOrderAttribute>(handlerType)
+                        .FirstOrDefault()?.Order ?? 0));
+            }
+        }
+
+        return handlerFactoryList.OrderBy(x => x.Item3).Select(x =>
+            new EventTypeWithEventHandlerFactories(x.Item2, new List<IEventHandlerFactory> { x.Item1 })).ToArray();
+    }
+
+    protected override Type? GetEventTypeByEventName(string eventName)
+    {
+        return EventTypes.GetOrDefault(eventName);
+    }
+
     private List<IEventHandlerFactory> GetOrCreateHandlerFactories(Type eventType)
     {
         return HandlerFactories.GetOrAdd(eventType, (type) => new List<IEventHandlerFactory>());
     }
 
+    private List<IEventHandlerFactory> GetOrCreateDynamicHandlerFactories(string eventName)
+    {
+        return DynamicEventHandlerFactories.GetOrAdd(eventName, (name) => new List<IEventHandlerFactory>());
+    }
+
     private static bool ShouldTriggerEventForHandler(Type targetEventType, Type handlerEventType)
     {
-        //Should trigger same type
         if (handlerEventType == targetEventType)
         {
             return true;
         }
 
-        //Should trigger for inherited types
         if (handlerEventType.IsAssignableFrom(targetEventType))
         {
             return true;

framework/src/Volo.Abp.EventBus/Volo/Abp/EventBus/Local/NullLocalEventBus.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
@@ -13,6 +13,12 @@ public sealed class NullLocalEventBus : ILocalEventBus
 
     }
 
+    /// <inheritdoc/>
+    public Task PublishAsync(string eventName, object eventData, bool onUnitOfWorkComplete = true)
+    {
+        return Task.CompletedTask;
+    }
+
     public IDisposable Subscribe<TEvent>(Func<TEvent, Task> action) where TEvent : class
     {
         return NullDisposable.Instance;
@@ -28,6 +34,12 @@ public sealed class NullLocalEventBus : ILocalEventBus
         return new List<EventTypeWithEventHandlerFactories>();
     }
 
+    /// <inheritdoc/>
+    public List<EventTypeWithEventHandlerFactories> GetDynamicEventHandlerFactories(string eventName)
+    {
+        return new List<EventTypeWithEventHandlerFactories>();
+    }
+
     public IDisposable Subscribe<TEvent, THandler>() where TEvent : class where THandler : IEventHandler, new()
     {
         return NullDisposable.Instance;
@@ -38,6 +50,18 @@ public sealed class NullLocalEventBus : ILocalEventBus
         return NullDisposable.Instance;
     }
 
+    /// <inheritdoc/>
+    public IDisposable Subscribe(string eventName, IEventHandler handler)
+    {
+        return NullDisposable.Instance;
+    }
+
+    /// <inheritdoc/>
+    public IDisposable Subscribe(string eventName, IEventHandlerFactory handler)
+    {
+        return NullDisposable.Instance;
+    }
+
     public IDisposable Subscribe<TEvent>(IEventHandlerFactory factory) where TEvent : class
     {
         return NullDisposable.Instance;
@@ -73,6 +97,16 @@ public sealed class NullLocalEventBus : ILocalEventBus
 
     }
 
+    /// <inheritdoc/>
+    public void Unsubscribe(string eventName, IEventHandlerFactory factory)
+    {
+    }
+
+    /// <inheritdoc/>
+    public void Unsubscribe(string eventName, IEventHandler handler)
+    {
+    }
+
     public void UnsubscribeAll<TEvent>() where TEvent : class
     {
 
@@ -80,7 +114,11 @@ public sealed class NullLocalEventBus : ILocalEventBus
 
     public void UnsubscribeAll(Type eventType)
     {
+    }
 
+    /// <inheritdoc/>
+    public void UnsubscribeAll(string eventName)
+    {
     }
 
     public Task PublishAsync<TEvent>(TEvent eventData, bool onUnitOfWorkComplete = true) where TEvent : class

framework/test/Volo.Abp.EventBus.Tests/Volo/Abp/EventBus/Distributed/LocalDistributedEventBus_Test.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Shouldly;
 using Volo.Abp.Domain.Entities.Events.Distributed;
@@ -10,10 +11,17 @@ namespace Volo.Abp.EventBus.Distributed;
 
 public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
 {
+    public LocalDistributedEventBus_Test()
+    {
+        MySimpleDistributedTransientEventHandler.HandleCount = 0;
+        MySimpleDistributedTransientEventHandler.DisposeCount = 0;
+        MySimpleDistributedSingleInstanceEventHandler.TenantId = null;
+    }
+
     [Fact]
     public async Task Should_Call_Handler_AndDispose()
     {
-        DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
 
         await DistributedEventBus.PublishAsync(new MySimpleEventData(1));
         await DistributedEventBus.PublishAsync(new MySimpleEventData(2));
@@ -23,12 +31,255 @@ public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
         Assert.Equal(3, MySimpleDistributedTransientEventHandler.DisposeCount);
     }
 
+    [Fact]
+    public async Task Should_Handle_Typed_Handler_When_Published_With_EventName()
+    {
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+        await DistributedEventBus.PublishAsync(eventName, new MySimpleEventData(1));
+        await DistributedEventBus.PublishAsync(eventName, new Dictionary<string, object>()
+        {
+            {"Value", 2}
+        });
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 3 });
+
+        Assert.Equal(3, MySimpleDistributedTransientEventHandler.HandleCount);
+        Assert.Equal(3, MySimpleDistributedTransientEventHandler.DisposeCount);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Dynamic_Handler_When_Published_With_EventName()
+    {
+        var handleCount = 0;
+        var eventName = "MyEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = DistributedEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                handleCount++;
+                await Task.CompletedTask;
+            })));
+
+        await DistributedEventBus.PublishAsync(eventName, new MySimpleEventData(1));
+        await DistributedEventBus.PublishAsync(eventName, new Dictionary<string, object>()
+        {
+            {"Value", 2}
+        });
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 3 });
+        await DistributedEventBus.PublishAsync(eventName, new[] { 1, 2, 3 });
+
+        Assert.Equal(4, handleCount);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Dynamic_Handler_When_Published_With_DynamicEventData()
+    {
+        var handleCount = 0;
+        var eventName = "MyEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = DistributedEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                handleCount++;
+                d.Data.ShouldNotBeNull();
+                await Task.CompletedTask;
+            })));
+
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new MySimpleEventData(1)));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new Dictionary<string, object>()
+        {
+            {"Value", 2}
+        }));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new { Value = 3 }));
+
+        Assert.Equal(3, handleCount);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Typed_Handler_When_Published_With_DynamicEventData()
+    {
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new MySimpleEventData(1)));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new Dictionary<string, object>()
+        {
+            {"Value", 2}
+        }));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new { Value = 3 }));
+
+        Assert.Equal(3, MySimpleDistributedTransientEventHandler.HandleCount);
+    }
+
+    [Fact]
+    public async Task Should_Trigger_Both_Typed_And_Dynamic_Handlers_For_Typed_Event()
+    {
+        using var typedSubscription = DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        var dynamicHandleCount = 0;
+
+        using var dynamicSubscription = DistributedEventBus.Subscribe(eventName, new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+        {
+            dynamicHandleCount++;
+            await Task.CompletedTask;
+        })));
+
+        await DistributedEventBus.PublishAsync(new MySimpleEventData(1));
+        await DistributedEventBus.PublishAsync(new MySimpleEventData(2));
+        await DistributedEventBus.PublishAsync(new MySimpleEventData(3));
+
+        Assert.Equal(3, MySimpleDistributedTransientEventHandler.HandleCount);
+        Assert.Equal(3, dynamicHandleCount);
+    }
+
+    [Fact]
+    public async Task Should_Trigger_Both_Handlers_For_Mixed_Typed_And_Dynamic_Publish()
+    {
+        using var typedSubscription = DistributedEventBus.Subscribe<MySimpleEventData, MySimpleDistributedTransientEventHandler>();
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        var dynamicHandleCount = 0;
+
+        using var dynamicSubscription = DistributedEventBus.Subscribe(eventName, new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+        {
+            dynamicHandleCount++;
+            await Task.CompletedTask;
+        })));
+
+        await DistributedEventBus.PublishAsync(new MySimpleEventData(1));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new Dictionary<string, object>()
+        {
+            {"Value", 2}
+        }));
+        await DistributedEventBus.PublishAsync(new DynamicEventData(eventName, new { Value = 3 }));
+
+        Assert.Equal(3, MySimpleDistributedTransientEventHandler.HandleCount);
+        Assert.Equal(3, dynamicHandleCount);
+    }
+
+    [Fact]
+    public async Task Should_Unsubscribe_Dynamic_Handler()
+    {
+        var handleCount = 0;
+        var eventName = "MyEvent-" + Guid.NewGuid().ToString("N");
+
+        var handler = new ActionEventHandler<DynamicEventData>(async (d) =>
+        {
+            handleCount++;
+            await Task.CompletedTask;
+        });
+        var factory = new SingleInstanceHandlerFactory(handler);
+
+        var disposable = DistributedEventBus.Subscribe(eventName, factory);
+
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 1 });
+        Assert.Equal(1, handleCount);
+
+        disposable.Dispose();
+
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 2 });
+        Assert.Equal(1, handleCount);
+    }
+
+    [Fact]
+    public async Task Should_Not_Throw_For_Unknown_Event_Name()
+    {
+        // Publishing to an unknown event name should not throw (consistent with typed PublishAsync behavior)
+        await DistributedEventBus.PublishAsync("NonExistentEvent", new { Value = 1 });
+    }
+
+    [Fact]
+    public async Task Should_Convert_DynamicEventData_To_Typed_Object()
+    {
+        MySimpleEventData? receivedData = null;
+
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEventData>(async (data) =>
+        {
+            receivedData = data;
+            await Task.CompletedTask;
+        });
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 42 });
+
+        receivedData.ShouldNotBeNull();
+        receivedData.Value.ShouldBe(42);
+    }
+
+    [Fact]
+    public async Task Should_Subscribe_With_IDistributedEventHandler()
+    {
+        var handleCount = 0;
+        var eventName = "MyEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = DistributedEventBus.Subscribe(eventName,
+            new TestDynamicDistributedEventHandler(() => handleCount++));
+
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 1 });
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 2 });
+
+        Assert.Equal(2, handleCount);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Multiple_Dynamic_Events_Independently()
+    {
+        var countA = 0;
+        var countB = 0;
+        var eventNameA = "EventA-" + Guid.NewGuid().ToString("N");
+        var eventNameB = "EventB-" + Guid.NewGuid().ToString("N");
+
+        using var subA = DistributedEventBus.Subscribe(eventNameA,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                countA++;
+                await Task.CompletedTask;
+            })));
+
+        using var subB = DistributedEventBus.Subscribe(eventNameB,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                countB++;
+                await Task.CompletedTask;
+            })));
+
+        await DistributedEventBus.PublishAsync(eventNameA, new { Value = 1 });
+        await DistributedEventBus.PublishAsync(eventNameB, new { Value = 2 });
+        await DistributedEventBus.PublishAsync(eventNameA, new { Value = 3 });
+
+        Assert.Equal(2, countA);
+        Assert.Equal(1, countB);
+    }
+
+    [Fact]
+    public async Task Should_Receive_EventName_In_DynamicEventData()
+    {
+        string? receivedEventName = null;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = DistributedEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                receivedEventName = d.EventName;
+                await Task.CompletedTask;
+            })));
+
+        await DistributedEventBus.PublishAsync(eventName, new { Value = 1 });
+
+        receivedEventName.ShouldBe(eventName);
+    }
+
     [Fact]
     public async Task Should_Change_TenantId_If_EventData_Is_MultiTenant()
     {
         var tenantId = Guid.NewGuid();
 
-        DistributedEventBus.Subscribe<MySimpleEventData>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEventData>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
 
         await DistributedEventBus.PublishAsync(new MySimpleEventData(3, tenantId));
 
@@ -40,7 +291,7 @@ public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
     {
         var tenantId = Guid.NewGuid();
 
-        DistributedEventBus.Subscribe<EntityCreatedEto<MySimpleEventData>>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
+        using var subscription = DistributedEventBus.Subscribe<EntityCreatedEto<MySimpleEventData>>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
 
         await DistributedEventBus.PublishAsync(new MySimpleEventData(3, tenantId));
 
@@ -52,7 +303,7 @@ public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
     {
         var tenantId = Guid.NewGuid();
 
-        DistributedEventBus.Subscribe<MySimpleEto>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
+        using var subscription = DistributedEventBus.Subscribe<MySimpleEto>(GetRequiredService<MySimpleDistributedSingleInstanceEventHandler>());
 
         await DistributedEventBus.PublishAsync(new MySimpleEto
         {
@@ -70,10 +321,10 @@ public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
     {
         var localEventBus = GetRequiredService<ILocalEventBus>();
 
-        localEventBus.Subscribe<DistributedEventSent, DistributedEventHandles>();
+        using var distributedEventSentSubscription = localEventBus.Subscribe<DistributedEventSent, DistributedEventHandles>();
-        localEventBus.Subscribe<DistributedEventReceived, DistributedEventHandles>();
+        using var distributedEventReceivedSubscription = localEventBus.Subscribe<DistributedEventReceived, DistributedEventHandles>();
 
-        DistributedEventBus.Subscribe<MyEventDate, MyEventHandle>();
+        using var subscription = DistributedEventBus.Subscribe<MyEventDate, MyEventHandle>();
 
         using (var uow = GetRequiredService<IUnitOfWorkManager>().Begin())
         {
@@ -121,4 +372,19 @@ public class LocalDistributedEventBus_Test : LocalDistributedEventBusTestBase
         }
     }
 
+    class TestDynamicDistributedEventHandler : IDistributedEventHandler<DynamicEventData>
+    {
+        private readonly Action _onHandle;
+
+        public TestDynamicDistributedEventHandler(Action onHandle)
+        {
+            _onHandle = onHandle;
+        }
+
+        public Task HandleEventAsync(DynamicEventData eventData)
+        {
+            _onHandle();
+            return Task.CompletedTask;
+        }
+    }
 }

framework/test/Volo.Abp.EventBus.Tests/Volo/Abp/EventBus/Local/LocalEventBus_Dynamic_Test.cs

@@ -0,0 +1,258 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Shouldly;
+using Xunit;
+
+namespace Volo.Abp.EventBus.Local;
+
+public class LocalEventBus_Dynamic_Test : EventBusTestBase
+{
+    [Fact]
+    public async Task Should_Handle_Dynamic_Handler_With_EventName()
+    {
+        var handleCount = 0;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                handleCount++;
+                d.EventName.ShouldBe(eventName);
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 1 });
+        await LocalEventBus.PublishAsync(eventName, new { Value = 2 });
+
+        handleCount.ShouldBe(2);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Typed_Handler_When_Published_With_EventName()
+    {
+        var handleCount = 0;
+
+        using var subscription = LocalEventBus.Subscribe<MySimpleEventData>(async (data) =>
+        {
+            handleCount++;
+            await Task.CompletedTask;
+        });
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+        await LocalEventBus.PublishAsync(eventName, new MySimpleEventData(42));
+
+        handleCount.ShouldBe(1);
+    }
+
+    [Fact]
+    public async Task Should_Convert_Dictionary_To_Typed_Handler()
+    {
+        MySimpleEventData? receivedData = null;
+
+        using var subscription = LocalEventBus.Subscribe<MySimpleEventData>(async (data) =>
+        {
+            receivedData = data;
+            await Task.CompletedTask;
+        });
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+        await LocalEventBus.PublishAsync(eventName, new Dictionary<string, object>
+        {
+            { "Value", 42 }
+        });
+
+        receivedData.ShouldNotBeNull();
+        receivedData.Value.ShouldBe(42);
+    }
+
+    [Fact]
+    public async Task Should_Trigger_Both_Typed_And_Dynamic_Handlers()
+    {
+        var typedHandleCount = 0;
+        var dynamicHandleCount = 0;
+
+        using var typedSubscription = LocalEventBus.Subscribe<MySimpleEventData>(async (data) =>
+        {
+            typedHandleCount++;
+            await Task.CompletedTask;
+        });
+
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        using var dynamicSubscription = LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                dynamicHandleCount++;
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(new MySimpleEventData(1));
+
+        typedHandleCount.ShouldBe(1);
+        dynamicHandleCount.ShouldBe(1);
+    }
+
+    [Fact]
+    public async Task Should_Unsubscribe_Dynamic_Handler()
+    {
+        var handleCount = 0;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        var handler = new ActionEventHandler<DynamicEventData>(async (d) =>
+        {
+            handleCount++;
+            await Task.CompletedTask;
+        });
+        var factory = new SingleInstanceHandlerFactory(handler);
+
+        var disposable = LocalEventBus.Subscribe(eventName, factory);
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 1 });
+        handleCount.ShouldBe(1);
+
+        disposable.Dispose();
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 2 });
+        handleCount.ShouldBe(1);
+    }
+
+    [Fact]
+    public async Task Should_Not_Throw_For_Unknown_Event_Name()
+    {
+        // Publishing to an unknown event name should not throw (consistent with typed PublishAsync behavior)
+        await LocalEventBus.PublishAsync("NonExistentEvent", new { Value = 1 });
+    }
+
+    [Fact]
+    public async Task Should_Access_Data_In_Dynamic_Handler()
+    {
+        object? receivedData = null;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                receivedData = d.Data;
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(eventName, new { Name = "Hello", Count = 42 });
+
+        receivedData.ShouldNotBeNull();
+    }
+
+    [Fact]
+    public async Task Should_Receive_Typed_Data_Via_Typed_Handler_From_Dynamic_Publish()
+    {
+        MySimpleEventData? receivedData = null;
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        using var subscription = LocalEventBus.Subscribe<MySimpleEventData>(async (d) =>
+        {
+            receivedData = d;
+            await Task.CompletedTask;
+        });
+
+        await LocalEventBus.PublishAsync(eventName, new MySimpleEventData(99));
+
+        receivedData.ShouldNotBeNull();
+        receivedData.Value.ShouldBe(99);
+    }
+
+    [Fact]
+    public async Task Should_Unsubscribe_All_Dynamic_Handlers()
+    {
+        var handleCount = 0;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                handleCount++;
+                await Task.CompletedTask;
+            })));
+
+        LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                handleCount++;
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 1 });
+        handleCount.ShouldBe(2);
+
+        LocalEventBus.UnsubscribeAll(eventName);
+
+        // After UnsubscribeAll, publishing still works (key exists) but no handlers are invoked
+        await LocalEventBus.PublishAsync(eventName, new { Value = 2 });
+        handleCount.ShouldBe(2);
+    }
+
+    [Fact]
+    public async Task Should_Handle_Multiple_Dynamic_Events_Independently()
+    {
+        var countA = 0;
+        var countB = 0;
+        var eventNameA = "EventA-" + Guid.NewGuid().ToString("N");
+        var eventNameB = "EventB-" + Guid.NewGuid().ToString("N");
+
+        using var subA = LocalEventBus.Subscribe(eventNameA,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                countA++;
+                await Task.CompletedTask;
+            })));
+
+        using var subB = LocalEventBus.Subscribe(eventNameB,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                countB++;
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(eventNameA, new { Value = 1 });
+        await LocalEventBus.PublishAsync(eventNameB, new { Value = 2 });
+        await LocalEventBus.PublishAsync(eventNameA, new { Value = 3 });
+
+        countA.ShouldBe(2);
+        countB.ShouldBe(1);
+    }
+
+    [Fact]
+    public async Task Should_Receive_EventName_In_DynamicEventData()
+    {
+        string? receivedEventName = null;
+        var eventName = "TestEvent-" + Guid.NewGuid().ToString("N");
+
+        using var subscription = LocalEventBus.Subscribe(eventName,
+            new SingleInstanceHandlerFactory(new ActionEventHandler<DynamicEventData>(async (d) =>
+            {
+                receivedEventName = d.EventName;
+                await Task.CompletedTask;
+            })));
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 1 });
+
+        receivedEventName.ShouldBe(eventName);
+    }
+
+    [Fact]
+    public async Task Should_Convert_Anonymous_Object_To_Typed_Handler()
+    {
+        MySimpleEventData? receivedData = null;
+        var eventName = EventNameAttribute.GetNameOrDefault<MySimpleEventData>();
+
+        using var subscription = LocalEventBus.Subscribe<MySimpleEventData>(async (d) =>
+        {
+            receivedData = d;
+            await Task.CompletedTask;
+        });
+
+        await LocalEventBus.PublishAsync(eventName, new { Value = 77 });
+
+        receivedData.ShouldNotBeNull();
+        receivedData.Value.ShouldBe(77);
+    }
+}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/DistDemoApp.EfCoreRabbitMq.csproj

@@ -1,28 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <OutputType>Exe</OutputType>
-        <TargetFramework>net10.0</TargetFramework>
-        <RootNamespace>DistDemoApp</RootNamespace>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.EntityFrameworkCore.SqlServer\Volo.Abp.EntityFrameworkCore.SqlServer.csproj" />
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.EventBus.RabbitMQ\Volo.Abp.EventBus.RabbitMQ.csproj" />
-        <ProjectReference Include="..\DistDemoApp.Shared\DistDemoApp.Shared.csproj" />
-    </ItemGroup>
-
-    <ItemGroup>
-        <PackageReference Include="Microsoft.EntityFrameworkCore.Tools">
-            <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
-            <PrivateAssets>compile; contentFiles; build; buildMultitargeting; buildTransitive; analyzers; native</PrivateAssets>
-        </PackageReference>
-    </ItemGroup>
-
-    <ItemGroup>
-      <None Update="appsettings.json">
-        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-      </None>
-    </ItemGroup>
-
-</Project>

test/DistEvents/DistDemoApp.EfCoreRabbitMq/DistDemoAppEfCoreRabbitMqModule.cs

@@ -1,44 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.EntityFrameworkCore;
-using Volo.Abp.EntityFrameworkCore.DistributedEvents;
-using Volo.Abp.EntityFrameworkCore.SqlServer;
-using Volo.Abp.EventBus.Distributed;
-using Volo.Abp.EventBus.RabbitMq;
-using Volo.Abp.Modularity;
-
-namespace DistDemoApp
-{
-    [DependsOn(
-        typeof(AbpEntityFrameworkCoreSqlServerModule),
-        typeof(AbpEventBusRabbitMqModule),
-        typeof(DistDemoAppSharedModule)
-    )]
-    public class DistDemoAppEfCoreRabbitMqModule : AbpModule
-    {
-        public override void ConfigureServices(ServiceConfigurationContext context)
-        {
-            context.Services.AddAbpDbContext<TodoDbContext>(options =>
-            {
-                options.AddDefaultRepositories();
-            });
-
-            Configure<AbpDbContextOptions>(options =>
-            {
-                options.UseSqlServer();
-            });
-            
-            Configure<AbpDistributedEventBusOptions>(options =>
-            {
-                options.Outboxes.Configure(config =>
-                {
-                    config.UseDbContext<TodoDbContext>();
-                });
-                
-                options.Inboxes.Configure(config =>
-                {
-                    config.UseDbContext<TodoDbContext>();
-                });
-            });
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/Migrations/20210910152547_Added_Boxes_Initial.Designer.cs

@@ -1,162 +0,0 @@
-// <auto-generated />
-using System;
-using DistDemoApp;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Migrations;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Volo.Abp.EntityFrameworkCore;
-
-namespace DistDemoApp.Migrations
-{
-    [DbContext(typeof(TodoDbContext))]
-    [Migration("20210910152547_Added_Boxes_Initial")]
-    partial class Added_Boxes_Initial
-    {
-        protected override void BuildTargetModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.SqlServer)
-                .HasAnnotation("Relational:MaxIdentifierLength", 128)
-                .HasAnnotation("ProductVersion", "5.0.9")
-                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
-
-            modelBuilder.Entity("DistDemoApp.TodoItem", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<string>("ConcurrencyStamp")
-                        .IsConcurrencyToken()
-                        .HasMaxLength(40)
-                        .HasColumnType("nvarchar(40)")
-                        .HasColumnName("ConcurrencyStamp");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<Guid?>("CreatorId")
-                        .HasColumnType("uniqueidentifier")
-                        .HasColumnName("CreatorId");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<string>("Text")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("nvarchar(128)");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TodoItems");
-                });
-
-            modelBuilder.Entity("DistDemoApp.TodoSummary", b =>
-                {
-                    b.Property<int>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("int")
-                        .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
-
-                    b.Property<string>("ConcurrencyStamp")
-                        .IsConcurrencyToken()
-                        .HasMaxLength(40)
-                        .HasColumnType("nvarchar(40)")
-                        .HasColumnName("ConcurrencyStamp");
-
-                    b.Property<byte>("Day")
-                        .HasColumnType("tinyint");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<byte>("Month")
-                        .HasColumnType("tinyint");
-
-                    b.Property<int>("TotalCount")
-                        .HasColumnType("int");
-
-                    b.Property<int>("Year")
-                        .HasColumnType("int");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TodoSummaries");
-                });
-
-            modelBuilder.Entity("Volo.Abp.EntityFrameworkCore.DistributedEvents.IncomingEventRecord", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<byte[]>("EventData")
-                        .IsRequired()
-                        .HasColumnType("varbinary(max)");
-
-                    b.Property<string>("EventName")
-                        .IsRequired()
-                        .HasMaxLength(256)
-                        .HasColumnType("nvarchar(256)");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<string>("MessageId")
-                        .HasColumnType("nvarchar(450)");
-
-                    b.Property<bool>("Processed")
-                        .HasColumnType("bit");
-
-                    b.Property<DateTime?>("ProcessedTime")
-                        .HasColumnType("datetime2");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("MessageId");
-
-                    b.HasIndex("Processed", "CreationTime");
-
-                    b.ToTable("AbpEventInbox");
-                });
-
-            modelBuilder.Entity("Volo.Abp.EntityFrameworkCore.DistributedEvents.OutgoingEventRecord", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<byte[]>("EventData")
-                        .IsRequired()
-                        .HasColumnType("varbinary(max)");
-
-                    b.Property<string>("EventName")
-                        .IsRequired()
-                        .HasMaxLength(256)
-                        .HasColumnType("nvarchar(256)");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("AbpEventOutbox");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/Migrations/20210910152547_Added_Boxes_Initial.cs

@@ -1,103 +0,0 @@
-using System;
-using Microsoft.EntityFrameworkCore.Migrations;
-
-namespace DistDemoApp.Migrations
-{
-    public partial class Added_Boxes_Initial : Migration
-    {
-        protected override void Up(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.CreateTable(
-                name: "AbpEventInbox",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
-                    ExtraProperties = table.Column<string>(type: "nvarchar(max)", nullable: true),
-                    MessageId = table.Column<string>(type: "nvarchar(450)", nullable: true),
-                    EventName = table.Column<string>(type: "nvarchar(256)", maxLength: 256, nullable: false),
-                    EventData = table.Column<byte[]>(type: "varbinary(max)", nullable: false),
-                    CreationTime = table.Column<DateTime>(type: "datetime2", nullable: false),
-                    Processed = table.Column<bool>(type: "bit", nullable: false),
-                    ProcessedTime = table.Column<DateTime>(type: "datetime2", nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_AbpEventInbox", x => x.Id);
-                });
-
-            migrationBuilder.CreateTable(
-                name: "AbpEventOutbox",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
-                    ExtraProperties = table.Column<string>(type: "nvarchar(max)", nullable: true),
-                    EventName = table.Column<string>(type: "nvarchar(256)", maxLength: 256, nullable: false),
-                    EventData = table.Column<byte[]>(type: "varbinary(max)", nullable: false),
-                    CreationTime = table.Column<DateTime>(type: "datetime2", nullable: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_AbpEventOutbox", x => x.Id);
-                });
-
-            migrationBuilder.CreateTable(
-                name: "TodoItems",
-                columns: table => new
-                {
-                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
-                    Text = table.Column<string>(type: "nvarchar(128)", maxLength: 128, nullable: false),
-                    ExtraProperties = table.Column<string>(type: "nvarchar(max)", nullable: true),
-                    ConcurrencyStamp = table.Column<string>(type: "nvarchar(40)", maxLength: 40, nullable: true),
-                    CreationTime = table.Column<DateTime>(type: "datetime2", nullable: false),
-                    CreatorId = table.Column<Guid>(type: "uniqueidentifier", nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_TodoItems", x => x.Id);
-                });
-
-            migrationBuilder.CreateTable(
-                name: "TodoSummaries",
-                columns: table => new
-                {
-                    Id = table.Column<int>(type: "int", nullable: false)
-                        .Annotation("SqlServer:Identity", "1, 1"),
-                    Year = table.Column<int>(type: "int", nullable: false),
-                    Month = table.Column<byte>(type: "tinyint", nullable: false),
-                    Day = table.Column<byte>(type: "tinyint", nullable: false),
-                    TotalCount = table.Column<int>(type: "int", nullable: false),
-                    ExtraProperties = table.Column<string>(type: "nvarchar(max)", nullable: true),
-                    ConcurrencyStamp = table.Column<string>(type: "nvarchar(40)", maxLength: 40, nullable: true)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_TodoSummaries", x => x.Id);
-                });
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AbpEventInbox_MessageId",
-                table: "AbpEventInbox",
-                column: "MessageId");
-
-            migrationBuilder.CreateIndex(
-                name: "IX_AbpEventInbox_Processed_CreationTime",
-                table: "AbpEventInbox",
-                columns: new[] { "Processed", "CreationTime" });
-        }
-
-        protected override void Down(MigrationBuilder migrationBuilder)
-        {
-            migrationBuilder.DropTable(
-                name: "AbpEventInbox");
-
-            migrationBuilder.DropTable(
-                name: "AbpEventOutbox");
-
-            migrationBuilder.DropTable(
-                name: "TodoItems");
-
-            migrationBuilder.DropTable(
-                name: "TodoSummaries");
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/Migrations/TodoDbContextModelSnapshot.cs

@@ -1,160 +0,0 @@
-// <auto-generated />
-using System;
-using DistDemoApp;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Volo.Abp.EntityFrameworkCore;
-
-namespace DistDemoApp.Migrations
-{
-    [DbContext(typeof(TodoDbContext))]
-    partial class TodoDbContextModelSnapshot : ModelSnapshot
-    {
-        protected override void BuildModel(ModelBuilder modelBuilder)
-        {
-#pragma warning disable 612, 618
-            modelBuilder
-                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.SqlServer)
-                .HasAnnotation("Relational:MaxIdentifierLength", 128)
-                .HasAnnotation("ProductVersion", "5.0.9")
-                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
-
-            modelBuilder.Entity("DistDemoApp.TodoItem", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<string>("ConcurrencyStamp")
-                        .IsConcurrencyToken()
-                        .HasMaxLength(40)
-                        .HasColumnType("nvarchar(40)")
-                        .HasColumnName("ConcurrencyStamp");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<Guid?>("CreatorId")
-                        .HasColumnType("uniqueidentifier")
-                        .HasColumnName("CreatorId");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<string>("Text")
-                        .IsRequired()
-                        .HasMaxLength(128)
-                        .HasColumnType("nvarchar(128)");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TodoItems");
-                });
-
-            modelBuilder.Entity("DistDemoApp.TodoSummary", b =>
-                {
-                    b.Property<int>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("int")
-                        .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
-
-                    b.Property<string>("ConcurrencyStamp")
-                        .IsConcurrencyToken()
-                        .HasMaxLength(40)
-                        .HasColumnType("nvarchar(40)")
-                        .HasColumnName("ConcurrencyStamp");
-
-                    b.Property<byte>("Day")
-                        .HasColumnType("tinyint");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<byte>("Month")
-                        .HasColumnType("tinyint");
-
-                    b.Property<int>("TotalCount")
-                        .HasColumnType("int");
-
-                    b.Property<int>("Year")
-                        .HasColumnType("int");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("TodoSummaries");
-                });
-
-            modelBuilder.Entity("Volo.Abp.EntityFrameworkCore.DistributedEvents.IncomingEventRecord", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<byte[]>("EventData")
-                        .IsRequired()
-                        .HasColumnType("varbinary(max)");
-
-                    b.Property<string>("EventName")
-                        .IsRequired()
-                        .HasMaxLength(256)
-                        .HasColumnType("nvarchar(256)");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.Property<string>("MessageId")
-                        .HasColumnType("nvarchar(450)");
-
-                    b.Property<bool>("Processed")
-                        .HasColumnType("bit");
-
-                    b.Property<DateTime?>("ProcessedTime")
-                        .HasColumnType("datetime2");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("MessageId");
-
-                    b.HasIndex("Processed", "CreationTime");
-
-                    b.ToTable("AbpEventInbox");
-                });
-
-            modelBuilder.Entity("Volo.Abp.EntityFrameworkCore.DistributedEvents.OutgoingEventRecord", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uniqueidentifier");
-
-                    b.Property<DateTime>("CreationTime")
-                        .HasColumnType("datetime2")
-                        .HasColumnName("CreationTime");
-
-                    b.Property<byte[]>("EventData")
-                        .IsRequired()
-                        .HasColumnType("varbinary(max)");
-
-                    b.Property<string>("EventName")
-                        .IsRequired()
-                        .HasMaxLength(256)
-                        .HasColumnType("nvarchar(256)");
-
-                    b.Property<string>("ExtraProperties")
-                        .HasColumnType("nvarchar(max)")
-                        .HasColumnName("ExtraProperties");
-
-                    b.HasKey("Id");
-
-                    b.ToTable("AbpEventOutbox");
-                });
-#pragma warning restore 612, 618
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/Program.cs

@@ -1,57 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
-using Serilog;
-using Serilog.Events;
-
-namespace DistDemoApp
-{
-    public class Program
-    {
-        public static async Task<int> Main(string[] args)
-        {
-            Log.Logger = new LoggerConfiguration()
-#if DEBUG
-                .MinimumLevel.Debug()
-#else
-                .MinimumLevel.Information()
-#endif
-                .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
-                .Enrich.FromLogContext()
-                .WriteTo.Async(c => c.File("Logs/logs.txt"))
-                .WriteTo.Async(c => c.Console())
-                .CreateLogger();
-
-            try
-            {
-                Log.Information("Starting console host.");
-                await CreateHostBuilder(args).RunConsoleAsync();
-                return 0;
-            }
-            catch (Exception ex)
-            {
-                Log.Fatal(ex, "Host terminated unexpectedly!");
-                return 1;
-            }
-            finally
-            {
-                Log.CloseAndFlush();
-            }
-
-        }
-
-        internal static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .UseAutofac()
-                .UseSerilog()
-                .ConfigureAppConfiguration((context, config) =>
-                {
-                    //setup your additional configuration sources
-                })
-                .ConfigureServices((hostContext, services) =>
-                {
-                    services.AddApplication<DistDemoAppEfCoreRabbitMqModule>();
-                });
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/TodoDbContext.cs

@@ -1,34 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-using Volo.Abp.Domain.Entities;
-using Volo.Abp.EntityFrameworkCore;
-using Volo.Abp.EntityFrameworkCore.DistributedEvents;
-
-namespace DistDemoApp
-{
-    public class TodoDbContext : AbpDbContext<TodoDbContext>, IHasEventOutbox, IHasEventInbox
-    {
-        public DbSet<TodoItem> TodoItems { get; set; }
-        public DbSet<TodoSummary> TodoSummaries { get; set; }
-        public DbSet<OutgoingEventRecord> OutgoingEvents { get; set; }
-        public DbSet<IncomingEventRecord> IncomingEvents { get; set; }
-
-        public TodoDbContext(DbContextOptions<TodoDbContext> options)
-            : base(options)
-        {
-            
-        }
-
-        protected override void OnModelCreating(ModelBuilder modelBuilder)
-        {
-            base.OnModelCreating(modelBuilder);
-            
-            modelBuilder.ConfigureEventOutbox();
-            modelBuilder.ConfigureEventInbox();
-
-            modelBuilder.Entity<TodoItem>(b =>
-            {
-                b.Property(x => x.Text).IsRequired().HasMaxLength(128);
-            });
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/TodoDbContextFactory.cs

@@ -1,29 +0,0 @@
-using System.IO;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Design;
-using Microsoft.Extensions.Configuration;
-
-namespace DistDemoApp
-{
-    public class TodoDbContextFactory : IDesignTimeDbContextFactory<TodoDbContext>
-    {
-        public TodoDbContext CreateDbContext(string[] args)
-        {
-            var configuration = BuildConfiguration();
-
-            var builder = new DbContextOptionsBuilder<TodoDbContext>()
-                .UseSqlServer(configuration.GetConnectionString("Default"));
-
-            return new TodoDbContext(builder.Options);
-        }
-
-        private static IConfigurationRoot BuildConfiguration()
-        {
-            var builder = new ConfigurationBuilder()
-                .SetBasePath(Directory.GetCurrentDirectory())
-                .AddJsonFile("appsettings.json", optional: false);
-
-            return builder.Build();
-        }
-    }
-}

test/DistEvents/DistDemoApp.EfCoreRabbitMq/appsettings.json

@@ -1,19 +0,0 @@
-{
-    "ConnectionStrings": {
-        "Default": "Server=(LocalDb)\\MSSQLLocalDB;Database=DistEventsDemo;Trusted_Connection=True;TrustServerCertificate=True"
-    },
-    "RabbitMQ": {
-        "Connections": {
-            "Default": {
-                "HostName": "localhost"
-            }
-        },
-        "EventBus": {
-            "ClientName": "DistDemoApp",
-            "ExchangeName": "DistDemo"
-        }
-    },
-    "Redis": {
-        "Configuration": "127.0.0.1"
-    }
-}

test/DistEvents/DistDemoApp.MongoDbKafka/DistDemoApp.MongoDbKafka.csproj

@@ -1,21 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <OutputType>Exe</OutputType>
-        <TargetFramework>net10.0</TargetFramework>
-        <RootNamespace>DistDemoApp</RootNamespace>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.MongoDB\Volo.Abp.MongoDB.csproj" />
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.EventBus.Kafka\Volo.Abp.EventBus.Kafka.csproj" />
-        <ProjectReference Include="..\DistDemoApp.Shared\DistDemoApp.Shared.csproj" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <None Update="appsettings.json">
-        <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-      </None>
-    </ItemGroup>
-
-</Project>

test/DistEvents/DistDemoApp.MongoDbKafka/DistDemoAppMongoDbKafkaModule.cs

@@ -1,38 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-using Volo.Abp.EventBus.Distributed;
-using Volo.Abp.EventBus.Kafka;
-using Volo.Abp.Modularity;
-using Volo.Abp.MongoDB;
-using Volo.Abp.MongoDB.DistributedEvents;
-
-namespace DistDemoApp
-{
-    [DependsOn(
-        typeof(AbpMongoDbModule),
-        typeof(AbpEventBusKafkaModule),
-        typeof(DistDemoAppSharedModule)
-    )]
-    public class DistDemoAppMongoDbKafkaModule : AbpModule
-    {
-        public override void ConfigureServices(ServiceConfigurationContext context)
-        {
-            context.Services.AddMongoDbContext<TodoMongoDbContext>(options =>
-            {
-                options.AddDefaultRepositories();
-            });
-
-            Configure<AbpDistributedEventBusOptions>(options =>
-            {
-                options.Outboxes.Configure(config =>
-                {
-                    config.UseMongoDbContext<TodoMongoDbContext>();
-                });
-
-                options.Inboxes.Configure(config =>
-                {
-                    config.UseMongoDbContext<TodoMongoDbContext>();
-                });
-            });
-        }
-    }
-}

test/DistEvents/DistDemoApp.MongoDbKafka/Program.cs

@@ -1,57 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
-using Serilog;
-using Serilog.Events;
-
-namespace DistDemoApp
-{
-    public class Program
-    {
-        public static async Task<int> Main(string[] args)
-        {
-            Log.Logger = new LoggerConfiguration()
-#if DEBUG
-                .MinimumLevel.Debug()
-#else
-                .MinimumLevel.Information()
-#endif
-                .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
-                .Enrich.FromLogContext()
-                .WriteTo.Async(c => c.File("Logs/logs.txt"))
-                .WriteTo.Async(c => c.Console())
-                .CreateLogger();
-
-            try
-            {
-                Log.Information("Starting console host.");
-                await CreateHostBuilder(args).RunConsoleAsync();
-                return 0;
-            }
-            catch (Exception ex)
-            {
-                Log.Fatal(ex, "Host terminated unexpectedly!");
-                return 1;
-            }
-            finally
-            {
-                Log.CloseAndFlush();
-            }
-
-        }
-
-        internal static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .UseAutofac()
-                .UseSerilog()
-                .ConfigureAppConfiguration((context, config) =>
-                {
-                    //setup your additional configuration sources
-                })
-                .ConfigureServices((hostContext, services) =>
-                {
-                    services.AddApplication<DistDemoAppMongoDbKafkaModule>();
-                });
-    }
-}

test/DistEvents/DistDemoApp.MongoDbKafka/TodoMongoDbContext.cs

@@ -1,26 +0,0 @@
-using MongoDB.Driver;
-using Volo.Abp.Data;
-using Volo.Abp.MongoDB;
-using Volo.Abp.MongoDB.DistributedEvents;
-
-namespace DistDemoApp
-{
-    [ConnectionStringName("Default")]
-    public class TodoMongoDbContext : AbpMongoDbContext, IHasEventOutbox, IHasEventInbox
-    {
-        public IMongoCollection<TodoItem> TodoItems => Collection<TodoItem>();
-        public IMongoCollection<TodoSummary> TodoSummaries => Collection<TodoSummary>();
-
-        public IMongoCollection<OutgoingEventRecord> OutgoingEvents
-        {
-            get => Collection<OutgoingEventRecord>();
-            set {}
-        }
-        public IMongoCollection<IncomingEventRecord> IncomingEvents
-        {
-            get => Collection<IncomingEventRecord>();
-            set {}
-        }
-    }
-
-}

test/DistEvents/DistDemoApp.MongoDbKafka/appsettings.json

@@ -1,19 +0,0 @@
-{
-    "ConnectionStrings": {
-        "Default": "mongodb://localhost:27018,localhost:27019,localhost:27020/DistEventsDemo"
-    },
-    "Kafka": {
-        "Connections": {
-            "Default": {
-                "BootstrapServers": "localhost:9092"
-            }
-        },
-        "EventBus": {
-            "GroupId": "DistDemoApp",
-            "TopicName": "DistDemoTopic"
-        }
-    },
-    "Redis": {
-        "Configuration": "127.0.0.1"
-    }
-}

test/DistEvents/DistDemoApp.MongoDbRebus/DistDemoApp.MongoDbRebus.csproj

@@ -1,21 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <OutputType>Exe</OutputType>
-        <TargetFramework>net10.0</TargetFramework>
-        <RootNamespace>DistDemoApp</RootNamespace>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.MongoDB\Volo.Abp.MongoDB.csproj" />
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.EventBus.Rebus\Volo.Abp.EventBus.Rebus.csproj" />
-        <ProjectReference Include="..\DistDemoApp.Shared\DistDemoApp.Shared.csproj" />
-    </ItemGroup>
-
-    <ItemGroup>
-        <None Update="appsettings.json">
-            <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-        </None>
-    </ItemGroup>
-
-</Project>

test/DistEvents/DistDemoApp.MongoDbRebus/DistDemoAppMongoDbRebusModule.cs

@@ -1,53 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-using Rebus.Persistence.InMem;
-using Rebus.Transport.InMem;
-using Volo.Abp.EventBus.Distributed;
-using Volo.Abp.EventBus.Rebus;
-using Volo.Abp.Modularity;
-using Volo.Abp.MongoDB;
-using Volo.Abp.MongoDB.DistributedEvents;
-
-namespace DistDemoApp
-{
-    [DependsOn(
-        typeof(AbpMongoDbModule),
-        typeof(AbpEventBusRebusModule),
-        typeof(DistDemoAppSharedModule)
-    )]
-    public class DistDemoAppMongoDbRebusModule : AbpModule
-    {
-        public override void PreConfigureServices(ServiceConfigurationContext context)
-        {
-            PreConfigure<AbpRebusEventBusOptions>(options =>
-            {
-                options.InputQueueName = "eventbus";
-                options.Configurer = rebusConfigurer =>
-                {
-                    rebusConfigurer.Transport(t => t.UseInMemoryTransport(new InMemNetwork(), "eventbus"));
-                    rebusConfigurer.Subscriptions(s => s.StoreInMemory());
-                };
-            });
-        }
-
-        public override void ConfigureServices(ServiceConfigurationContext context)
-        {
-            context.Services.AddMongoDbContext<TodoMongoDbContext>(options =>
-            {
-                options.AddDefaultRepositories();
-            });
-
-            Configure<AbpDistributedEventBusOptions>(options =>
-            {
-                options.Outboxes.Configure(config =>
-                {
-                    config.UseMongoDbContext<TodoMongoDbContext>();
-                });
-
-                options.Inboxes.Configure(config =>
-                {
-                    config.UseMongoDbContext<TodoMongoDbContext>();
-                });
-            });
-        }
-    }
-}

test/DistEvents/DistDemoApp.MongoDbRebus/Program.cs

@@ -1,57 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Hosting;
-using Serilog;
-using Serilog.Events;
-
-namespace DistDemoApp
-{
-    public class Program
-    {
-        public static async Task<int> Main(string[] args)
-        {
-            Log.Logger = new LoggerConfiguration()
-#if DEBUG
-                .MinimumLevel.Debug()
-#else
-                .MinimumLevel.Information()
-#endif
-                .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
-                .Enrich.FromLogContext()
-                .WriteTo.Async(c => c.File("Logs/logs.txt"))
-                .WriteTo.Async(c => c.Console())
-                .CreateLogger();
-
-            try
-            {
-                Log.Information("Starting console host.");
-                await CreateHostBuilder(args).RunConsoleAsync();
-                return 0;
-            }
-            catch (Exception ex)
-            {
-                Log.Fatal(ex, "Host terminated unexpectedly!");
-                return 1;
-            }
-            finally
-            {
-                Log.CloseAndFlush();
-            }
-
-        }
-
-        internal static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .UseAutofac()
-                .UseSerilog()
-                .ConfigureAppConfiguration((context, config) =>
-                {
-                    //setup your additional configuration sources
-                })
-                .ConfigureServices((hostContext, services) =>
-                {
-                    services.AddApplication<DistDemoAppMongoDbRebusModule>();
-                });
-    }
-}

test/DistEvents/DistDemoApp.MongoDbRebus/TodoMongoDbContext.cs

@@ -1,19 +0,0 @@
-using MongoDB.Driver;
-using Volo.Abp.Data;
-using Volo.Abp.MongoDB;
-using Volo.Abp.MongoDB.DistributedEvents;
-
-namespace DistDemoApp
-{
-    [ConnectionStringName("Default")]
-    public class TodoMongoDbContext : AbpMongoDbContext, IHasEventOutbox, IHasEventInbox
-    {
-        public IMongoCollection<TodoItem> TodoItems => Collection<TodoItem>();
-        public IMongoCollection<TodoSummary> TodoSummaries => Collection<TodoSummary>();
-
-        public IMongoCollection<OutgoingEventRecord> OutgoingEvents => Collection<OutgoingEventRecord>();
-
-        public IMongoCollection<IncomingEventRecord> IncomingEvents => Collection<IncomingEventRecord>();
-    }
-
-}

test/DistEvents/DistDemoApp.MongoDbRebus/appsettings.json

@@ -1,19 +0,0 @@
-{
-    "ConnectionStrings": {
-        "Default": "mongodb://localhost:27018,localhost:27019,localhost:27020/DistEventsDemo"
-    },
-    "Kafka": {
-        "Connections": {
-            "Default": {
-                "BootstrapServers": "localhost:9092"
-            }
-        },
-        "EventBus": {
-            "GroupId": "DistDemoApp",
-            "TopicName": "DistDemoTopic"
-        }
-    },
-    "Redis": {
-        "Configuration": "127.0.0.1"
-    }
-}

test/DistEvents/DistDemoApp.Shared/DemoService.cs

@@ -1,29 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Volo.Abp.DependencyInjection;
-using Volo.Abp.Domain.Repositories;
-
-namespace DistDemoApp
-{
-    public class DemoService : ITransientDependency
-    {
-        private readonly IRepository<TodoItem, Guid> _todoItemRepository;
-
-        public DemoService(IRepository<TodoItem, Guid> todoItemRepository)
-        {
-            _todoItemRepository = todoItemRepository;
-        }
-        
-        public async Task CreateTodoItemAsync()
-        {
-            var todoItem = await _todoItemRepository.InsertAsync(
-                new TodoItem
-                {
-                    Text = "todo item " + DateTime.Now.Ticks
-                }
-            );
-            
-            Console.WriteLine("Created a new todo item: " + todoItem);
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/DistDemoApp.Shared.csproj

@@ -1,23 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-    <PropertyGroup>
-        <TargetFramework>net10.0</TargetFramework>
-        <RootNamespace>DistDemoApp</RootNamespace>
-    </PropertyGroup>
-
-    <ItemGroup>
-        <PackageReference Include="DistributedLock.Redis" />
-        <PackageReference Include="Microsoft.Extensions.Hosting" />
-        <PackageReference Include="Serilog.Extensions.Hosting" />
-        <PackageReference Include="Serilog.Sinks.Async" />
-        <PackageReference Include="Serilog.Sinks.Console" />
-        <PackageReference Include="Serilog.Sinks.File" />
-    </ItemGroup>
-
-    <ItemGroup>
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.Autofac\Volo.Abp.Autofac.csproj" />
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.Ddd.Domain\Volo.Abp.Ddd.Domain.csproj" />
-        <ProjectReference Include="..\..\..\framework\src\Volo.Abp.EventBus\Volo.Abp.EventBus.csproj" />
-    </ItemGroup>
-
-</Project>

test/DistEvents/DistDemoApp.Shared/DistDemoAppHostedService.cs

@@ -1,39 +0,0 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-using Microsoft.Extensions.Hosting;
-using Volo.Abp;
-
-namespace DistDemoApp
-{
-    public class DistDemoAppHostedService : IHostedService
-    {
-        private readonly IAbpApplicationWithExternalServiceProvider _application;
-        private readonly IServiceProvider _serviceProvider;
-        private readonly DemoService _demoService;
-
-        public DistDemoAppHostedService(
-            IAbpApplicationWithExternalServiceProvider application,
-            IServiceProvider serviceProvider,
-            DemoService demoService)
-        {
-            _application = application;
-            _serviceProvider = serviceProvider;
-            _demoService = demoService;
-        }
-
-        public async Task StartAsync(CancellationToken cancellationToken)
-        {
-            _application.Initialize(_serviceProvider);
-
-            await _demoService.CreateTodoItemAsync();
-        }
-
-        public Task StopAsync(CancellationToken cancellationToken)
-        {
-            _application.Shutdown();
-
-            return Task.CompletedTask;
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/DistDemoAppSharedModule.cs

@@ -1,39 +0,0 @@
-using Medallion.Threading;
-using Medallion.Threading.Redis;
-using Microsoft.Extensions.DependencyInjection;
-using StackExchange.Redis;
-using Volo.Abp.Autofac;
-using Volo.Abp.Domain;
-using Volo.Abp.Domain.Entities.Events.Distributed;
-using Volo.Abp.EventBus;
-using Volo.Abp.Modularity;
-
-namespace DistDemoApp
-{
-    [DependsOn(
-        typeof(AbpAutofacModule),
-        typeof(AbpDddDomainModule),
-        typeof(AbpEventBusModule)
-        )]
-    public class DistDemoAppSharedModule : AbpModule
-    {
-        public override void ConfigureServices(ServiceConfigurationContext context)
-        {
-            var configuration = context.Services.GetConfiguration();
-
-            context.Services.AddHostedService<DistDemoAppHostedService>();
-
-            Configure<AbpDistributedEntityEventOptions>(options =>
-            {
-                options.EtoMappings.Add<TodoItem, TodoItemEto>();
-                options.AutoEventSelectors.Add<TodoItem>();
-            });
-
-            context.Services.AddSingleton<IDistributedLockProvider>(sp =>
-            {
-                var connection = ConnectionMultiplexer.Connect(configuration["Redis:Configuration"]);
-                return new RedisDistributedSynchronizationProvider(connection.GetDatabase());
-            });
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/TodoEventHandler.cs

@@ -1,63 +0,0 @@
-using System;
-using System.Threading.Tasks;
-using Volo.Abp.DependencyInjection;
-using Volo.Abp.Domain.Entities.Events.Distributed;
-using Volo.Abp.Domain.Repositories;
-using Volo.Abp.EventBus.Distributed;
-using Volo.Abp.Uow;
-
-namespace DistDemoApp
-{
-    public class TodoEventHandler :
-        IDistributedEventHandler<EntityCreatedEto<TodoItemEto>>,
-        IDistributedEventHandler<EntityDeletedEto<TodoItemEto>>,
-        ITransientDependency
-    {
-        private readonly IRepository<TodoSummary, int> _todoSummaryRepository;
-
-        public TodoEventHandler(IRepository<TodoSummary, int> todoSummaryRepository)
-        {
-            _todoSummaryRepository = todoSummaryRepository;
-        }
-        
-        [UnitOfWork]
-        public virtual async Task HandleEventAsync(EntityCreatedEto<TodoItemEto> eventData)
-        {
-            var dateTime = eventData.Entity.CreationTime;
-            var todoSummary = await _todoSummaryRepository.FindAsync(
-                x => x.Year == dateTime.Year &&
-                     x.Month == dateTime.Month &&
-                     x.Day == dateTime.Day
-            );
-
-            if (todoSummary == null)
-            {
-                todoSummary = await _todoSummaryRepository.InsertAsync(new TodoSummary(dateTime));
-            }
-            else
-            {
-                todoSummary.Increase();
-                await _todoSummaryRepository.UpdateAsync(todoSummary);
-            }
-            
-            Console.WriteLine("Increased total count: " + todoSummary);
-        }
-
-        public async Task HandleEventAsync(EntityDeletedEto<TodoItemEto> eventData)
-        {
-            var dateTime = eventData.Entity.CreationTime;
-            var todoSummary = await _todoSummaryRepository.FirstOrDefaultAsync(
-                x => x.Year == dateTime.Year &&
-                     x.Month == dateTime.Month &&
-                     x.Day == dateTime.Day
-            );
-
-            if (todoSummary != null)
-            {
-                todoSummary.Decrease();
-                await _todoSummaryRepository.UpdateAsync(todoSummary);
-                Console.WriteLine("Decreased total count: " + todoSummary);
-            }
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/TodoItem.cs

@@ -1,15 +0,0 @@
-using System;
-using Volo.Abp.Domain.Entities.Auditing;
-
-namespace DistDemoApp
-{
-    public class TodoItem : CreationAuditedAggregateRoot<Guid>
-    {
-        public string Text { get; set; }
-
-        public override string ToString()
-        {
-            return $"{base.ToString()}, Text = {Text}";
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/TodoItemEto.cs

@@ -1,12 +0,0 @@
-using System;
-using Volo.Abp.EventBus;
-
-namespace DistDemoApp
-{
-    [EventName("todo-item")]
-    public class TodoItemEto
-    {
-        public DateTime CreationTime { get; set; }
-        public string Text { get; set; }
-    }
-}

test/DistEvents/DistDemoApp.Shared/TodoItemObjectMapper.cs

@@ -1,24 +0,0 @@
-using Volo.Abp.DependencyInjection;
-using Volo.Abp.ObjectMapping;
-
-namespace DistDemoApp
-{
-    public class TodoItemObjectMapper : IObjectMapper<TodoItem, TodoItemEto>, ISingletonDependency
-    {
-        public TodoItemEto Map(TodoItem source)
-        {
-            return new TodoItemEto
-            {
-                Text = source.Text,
-                CreationTime = source.CreationTime
-            };
-        }
-
-        public TodoItemEto Map(TodoItem source, TodoItemEto destination)
-        {
-            destination.Text = source.Text;
-            destination.CreationTime = source.CreationTime;
-            return destination;
-        }
-    }
-}

test/DistEvents/DistDemoApp.Shared/TodoSummary.cs

@@ -1,41 +0,0 @@
-using System;
-using Volo.Abp.Domain.Entities;
-
-namespace DistDemoApp
-{
-    public class TodoSummary : AggregateRoot<int>
-    {
-        public int Year { get; private set; }
-        public byte Month { get; private set; }
-        public byte Day { get; private set; }
-        public int TotalCount { get; private set; }
-
-        private TodoSummary()
-        {
-            
-        }
-
-        public TodoSummary(DateTime dateTime, int initialCount = 1)
-        {
-            Year = dateTime.Year;
-            Month = (byte)dateTime.Month;
-            Day = (byte)dateTime.Day;
-            TotalCount = initialCount;
-        }
-
-        public void Increase(int amount = 1)
-        {
-            TotalCount += amount;
-        }
-        
-        public void Decrease(int amount = 1)
-        {
-            TotalCount -= amount;
-        }
-
-        public override string ToString()
-        {
-            return $"{base.ToString()}, {Year}-{Month:00}-{Day:00}: {TotalCount}";
-        }
-    }
-}

test/DistEvents/DistEventsDemo.slnx

@@ -1,6 +0,0 @@
-<Solution>
-  <Project Path="DistDemoApp.EfCoreRabbitMq/DistDemoApp.EfCoreRabbitMq.csproj" />
-  <Project Path="DistDemoApp.MongoDbKafka/DistDemoApp.MongoDbKafka.csproj" />
-  <Project Path="DistDemoApp.MongoDbRebus/DistDemoApp.MongoDbRebus.csproj" />
-  <Project Path="DistDemoApp.Shared/DistDemoApp.Shared.csproj" />
-</Solution>