增加领域事件定义，增加MassTransit 发布事件

IRaCIS.Core.Domain/BaseModel/DomainEvent.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace IRaCIS.Core.Domain.BaseModel
+{
+    /// <summary>
+    /// 领域实体事件基类
+    /// </summary>
+    public abstract class DomainEvent
+    {
+
+    }
+
+    public class FailedDomainEvent
+    {
+        public Guid Id { get; set; }
+        public string EventType { get; set; }
+        public string EventData { get; set; }
+        public DateTime FailedAt { get; set; }
+    }
+}

IRaCIS.Core.Domain/BaseModel/Entity.cs

@@ -1,21 +1,57 @@
-using System;
+using IRaCIS.Core.Domain.BaseModel;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using System.Security.Cryptography;
 
 namespace IRaCIS.Core.Domain.Models
 {
+
+
+    public interface IAggregateRoot;
+    public interface IEntity<TKey>
+    {
+        abstract TKey Id { get; set; }
+
+    }
+
     public abstract class Entity : IEntity<Guid>
     {
         [Key]
         [Required]
         [DatabaseGenerated(DatabaseGeneratedOption.None)]
         public Guid Id { get; set; }
+
+        #region 领域事件 仅仅允许通过提供的方法进行操作
+
+        private readonly List<DomainEvent> _domainEvents = [];
+
+        [NotMapped]
+        public IReadOnlyCollection<DomainEvent> DomainEvents => _domainEvents.AsReadOnly();
+
+
+        public void AddDomainEvent(DomainEvent domainEvent)
+        {
+            _domainEvents.Add(domainEvent);
+        }
+
+        public void RemoveDomainEvent(DomainEvent domainEvent)
+        {
+            _domainEvents.Remove(domainEvent);
+        }
+
+        public void ClearDomainEvents()
+        {
+            _domainEvents.Clear();
+        }
+        #endregion
+
+
     }
 
-    public interface IEntity<TKey>
+
-    {
+
-        abstract TKey Id { get; set; }
-    }
 
     #region 减少实体属性，增加基类
 

IRaCIS.Core.Infra.EFCore/IRaCIS.Core.Infra.EFCore.csproj

@@ -25,7 +25,6 @@
 		<PackageReference Include="EntityFrameworkCore.Exceptions.SqlServer" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0" />
-		<PackageReference Include="NewId" Version="4.0.1" />
 	</ItemGroup>
 
 </Project>

IRaCIS.Core.Infra.EFCore/Interceptor/AuditEntityInterceptor.cs

@@ -12,13 +12,14 @@ namespace IRaCIS.Core.Infra.EFCore;
 
 public class AuditEntityInterceptor(IUserInfo _userInfo) : SaveChangesInterceptor
 {
-    public override InterceptionResult<int> SavingChanges(DbContextEventData eventData, InterceptionResult<int> result)
-    {
-        AuditEntities(eventData.Context);
-
-        return base.SavingChanges(eventData, result);
-    }
 
+    /// <summary>
+    /// 在事务提交之前执行
+    /// </summary>
+    /// <param name="eventData"></param>
+    /// <param name="result"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
     public override ValueTask<InterceptionResult<int>> SavingChangesAsync(DbContextEventData eventData,
         InterceptionResult<int> result, CancellationToken cancellationToken = default)
     {
@@ -26,7 +27,12 @@ public class AuditEntityInterceptor(IUserInfo _userInfo) : SaveChangesIntercepto
 
         return base.SavingChangesAsync(eventData, result, cancellationToken);
     }
+    public override InterceptionResult<int> SavingChanges(DbContextEventData eventData, InterceptionResult<int> result)
+    {
+        AuditEntities(eventData.Context);
 
+        return base.SavingChanges(eventData, result);
+    }
     public void AuditEntities(DbContext? context)
     {
         if (context == null) return;

IRaCIS.Core.Infra.EFCore/Interceptor/DispatchDomainEventsInterceptor.cs

@@ -0,0 +1,59 @@
+using Microsoft.EntityFrameworkCore.Diagnostics;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using IRaCIS.Core.Domain.Models;
+using MassTransit;
+
+namespace IRaCIS.Core.Infra.EFCore.Interceptor
+{
+    public class DispatchDomainEventsInterceptor(IPublishEndpoint publishEndpoint) : SaveChangesInterceptor
+    {
+
+        //领域事件通常与数据变更密切相关。如果在 SaveChanges 之前发布事件，有可能事件发布时的数据状态还没有被持久化到数据库。这可能导致事件消费者看到的是一个不一致的状态
+
+        /// <summary>
+        /// 在事务提交之后分发事件
+        /// </summary>
+        /// <param name="eventData"></param>
+        /// <param name="result"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        public override async ValueTask<int> SavedChangesAsync(SaveChangesCompletedEventData eventData, int result,
+            CancellationToken cancellationToken = default)
+        {
+            await DispatchDomainEvents(eventData.Context);
+            return await base.SavedChangesAsync(eventData, result, cancellationToken);
+        }
+        public override int SavedChanges(SaveChangesCompletedEventData eventData, int result)
+        {
+            DispatchDomainEvents(eventData.Context).GetAwaiter().GetResult();
+            return base.SavedChanges(eventData, result);
+        }
+        private async Task DispatchDomainEvents(DbContext? context)
+        {
+            if (context == null) return;
+
+            var entities = context.ChangeTracker
+                .Entries<Entity>()
+                .Where(e => e.Entity.DomainEvents.Any())
+                .Select(e => e.Entity)
+                .ToList();
+
+            var domainEvents = entities
+                .SelectMany(e => e.DomainEvents)
+                .ToList();
+
+            entities.ForEach(e => e.ClearDomainEvents());
+
+            foreach (var domainEvent in domainEvents)
+            {
+                await publishEndpoint.Publish(domainEvent);
+            }
+        }
+    }
+}

IRaCIS.Core.Infrastructure/IRaCIS.Core.Infrastructure.csproj

@@ -11,6 +11,7 @@
 	<ItemGroup>
 		<PackageReference Include="AutoMapper" Version="13.0.1" />
 		<PackageReference Include="AutoMapper.Collection.EntityFrameworkCore" Version="10.0.0" />
+		<PackageReference Include="MassTransit" Version="8.2.4" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="8.0.0" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />