实现事务性发件箱模式

src/HelloShop.OrderingService/Infrastructure/EntityConfigurations/EventLogs/DistributedEventLogEntityTypeConfiguration.cs

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+// Copyright (c) HelloShop Corporation. All rights reserved.
+// See the license file in the project root for more information.
+
+using HelloShop.OrderingService.Entities.EventLogs;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Microsoft.EntityFrameworkCore;
+using System.Text.Json;
+using HelloShop.ServiceDefaults.DistributedEvents.Abstractions;
+
+namespace HelloShop.OrderingService.Infrastructure.EntityConfigurations.EventLogs
+{
+    public class DistributedEventLogEntityTypeConfiguration : IEntityTypeConfiguration<DistributedEventLog>
+    {
+        private static readonly JsonSerializerOptions s_jsonSerializerOptions = new(JsonSerializerDefaults.Web);
+
+        public void Configure(EntityTypeBuilder<DistributedEventLog> builder)
+        {
+            builder.ToTable("DistributedEventLogs");
+
+            builder.HasKey(x => x.EventId);
+            builder.Property(x => x.EventTypeName).HasMaxLength(32);
+            builder.Property(x => x.Status).HasConversion<string>();
+
+            builder.Property(x => x.DistributedEvent).HasConversion(v => JsonSerializer.Serialize(v, v.GetType(), s_jsonSerializerOptions), v => JsonSerializer.Deserialize<DistributedEvent>(v, s_jsonSerializerOptions)!);
+        }
+    }
+}