参照现有的 ExamArrangementJob / SchedulePublishJob 后台任务模式，将发布改为通过 RabbitMQ
队列异步执行，拆分查询消除笛卡尔积。
修改的文件（共 13 个）
┌───────────────────────────────────────────────────────────────┬──────────────────────────────────────────────────┐
│ 文件 │ 变更 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Domain/Academic/ExamEntities.cs │ 新增 ExamPublishJob 实体 + ExamPublishJobStatus │
│ │ / ExamPublishJobKind 枚举 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Domain/System/BackgroundJobOutboxMessage.cs │ BackgroundJobKind 新增 ExamPublish = 6 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/BackgroundJobs/BackgroundJobOptions.cs │ 新增 ExamPublishConcurrency 配置项 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/BackgroundJobs/BackgroundJobRunner.cs │ RunAsync 和 MarkJobRetryLimitExceeded 添加 │
│ │ ExamPublish 分支 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/BackgroundJobs/RabbitMqBackgroundJobs.cs │ JobKinds 数组和 RoutingKey 添加 ExamPublish → │
│ │ "exam.publish" │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/BackgroundJobs/BackgroundJobOutboxPublisher.cs │ 启动恢复逻辑添加 ExamPublishJobs │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/Persistence/AppDbContext.cs │ 新增 ExamPublishJobs DbSet │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Controllers/OperationsController.cs │ CountFailedJobsAsync / GetFailedJobs │
│ │ 添加考试发布失败统计和筛选 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Program.cs │ 校验 ExamPublishConcurrency + 注册 │
│ │ ExamPublishJobProcessor │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Infrastructure/Exams/ExamPublishJobs.cs │ 新文件 — │
│ │ ExamPublishJobProcessor，拆分查询校验后发布 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Controllers/ExamsController.cs │ Publish 改为创建后台任务 + 202 返回；新增 GET │
│ │ publish-jobs/{id} / GET plans/{id}/publish-job │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ Controllers/MakeupExamsController.cs │ 同上改造 │
├───────────────────────────────────────────────────────────────┼──────────────────────────────────────────────────┤
│ tests/.../TeachingWorkflowRosterTests.cs │ 更新测试适配新的异步发布模式 │
└───────────────────────────────────────────────────────────────┴──────────────────────────────────────────────────┘
笛卡尔积消除
之前：一个 Include 链拉全部 → EF Core 生成 Sessions × Invigilators × RoomLinks × Seats 笛卡尔积
之后：
- 场次计数：db.ExamSessions.CountAsync（无 JOIN）
- 场次摘要：Select new { Id, ClassroomId, InvigilatorCount, RoomLinkCount }（只查所需列）
- 容量超限：db.ExamRooms.Select(r => new { SeatCount = r.Seats.Count, Capacity })（单表 JOIN）
- 课程冲突：db.ExamRoomSessions.Where(link => ...CourseId != link.ExamRoom!.CourseId)（独立查询）
- 每个查询只做自己需要的 JOIN，互不干扰
测试结果
213 通过，0 失败，0 跳过
配置方式
- BackgroundJobs__Transport=RabbitMq → 走 RabbitMQ 队列 jiaowu.background-jobs.exam.publish
- BackgroundJobs__Transport=InMemory（默认） → 走内存 Channel
- BackgroundJobs__ExamPublishConcurrency=1（默认，可调 1-16）
This commit is contained in:
@@ -62,6 +62,8 @@ public sealed class AppDbContext(DbContextOptions<AppDbContext> options)
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Set<ExamArrangementJob>();
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public DbSet<ExamSignInExportJob> ExamSignInExportJobs =>
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Set<ExamSignInExportJob>();
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public DbSet<ExamPublishJob> ExamPublishJobs =>
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Set<ExamPublishJob>();
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public DbSet<ExamSession> ExamSessions => Set<ExamSession>();
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public DbSet<ExamSessionInvigilator> ExamSessionInvigilators =>
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Set<ExamSessionInvigilator>();
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+5321
File diff suppressed because it is too large
Load Diff
+45
@@ -0,0 +1,45 @@
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using System;
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using Microsoft.EntityFrameworkCore.Migrations;
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#nullable disable
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namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
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{
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/// <inheritdoc />
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public partial class ExamPublishJobs : Migration
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{
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/// <inheritdoc />
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protected override void Up(MigrationBuilder migrationBuilder)
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{
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migrationBuilder.CreateTable(
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name: "ExamPublishJobs",
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columns: table => new
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{
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Id = table.Column<Guid>(type: "char(36)", nullable: false),
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Kind = table.Column<int>(type: "int", nullable: false),
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PlanId = table.Column<Guid>(type: "char(36)", nullable: false),
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ActivePlanId = table.Column<Guid>(type: "char(36)", nullable: true),
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RequestedByUserId = table.Column<Guid>(type: "char(36)", nullable: true),
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Status = table.Column<int>(type: "int", nullable: false),
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CurrentStep = table.Column<string>(type: "longtext", nullable: true),
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ErrorMessage = table.Column<string>(type: "longtext", nullable: true),
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StartedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
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CompletedAt = table.Column<DateTime>(type: "datetime(6)", nullable: true),
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CreatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false),
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UpdatedAt = table.Column<DateTime>(type: "datetime(6)", nullable: false)
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},
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constraints: table =>
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{
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table.PrimaryKey("PK_ExamPublishJobs", x => x.Id);
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})
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.Annotation("MySQL:Charset", "utf8mb4");
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}
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/// <inheritdoc />
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protected override void Down(MigrationBuilder migrationBuilder)
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{
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migrationBuilder.DropTable(
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name: "ExamPublishJobs");
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}
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}
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}
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+44
@@ -1634,6 +1634,50 @@ namespace Jiaowu.Api.Infrastructure.Persistence.Migrations.MySql
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b.ToTable("ExamPlans");
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});
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modelBuilder.Entity("Jiaowu.Api.Domain.Academic.ExamPublishJob", b =>
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{
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b.Property<Guid>("Id")
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.ValueGeneratedOnAdd()
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.HasColumnType("char(36)");
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b.Property<Guid?>("ActivePlanId")
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.HasColumnType("char(36)");
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b.Property<DateTime?>("CompletedAt")
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.HasColumnType("datetime(6)");
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b.Property<DateTime>("CreatedAt")
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.HasColumnType("datetime(6)");
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b.Property<string>("CurrentStep")
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.HasColumnType("longtext");
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b.Property<string>("ErrorMessage")
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.HasColumnType("longtext");
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b.Property<int>("Kind")
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.HasColumnType("int");
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b.Property<Guid>("PlanId")
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.HasColumnType("char(36)");
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b.Property<Guid?>("RequestedByUserId")
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.HasColumnType("char(36)");
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b.Property<DateTime?>("StartedAt")
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.HasColumnType("datetime(6)");
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b.Property<int>("Status")
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.HasColumnType("int");
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b.Property<DateTime>("UpdatedAt")
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.HasColumnType("datetime(6)");
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b.HasKey("Id");
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b.ToTable("ExamPublishJobs");
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});
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modelBuilder.Entity("Jiaowu.Api.Domain.Academic.ExamRoomAssignment", b =>
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{
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b.Property<Guid>("Id")
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