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@omni-api/plugin-orm

v0.0.2

Published

Database transaction middleware for OmniAPI; ORM-agnostic via DataSource convention.

Readme

@omni/plugin-orm

OmniAPI 数据库事务中间件,不绑定具体 ORM

核心概念

  • DataSource:约定接口(client + withTransaction + health
  • attachDataSource(ds):把 DataSource 挂到 ctx(全局或 router 级中间件)
  • transactional():把 handler 包进事务
  • getTx(ctx):在 handler / service 中获取当前事务/客户端

用法

import { PrismaClient } from '@prisma/client';
import { attachDataSource, transactional, getTx, prismaDataSource } from '@omni/plugin-orm';

const ds = prismaDataSource(new PrismaClient());

defineProcedure({
  name: 'order.create',
  middleware: [attachDataSource(ds), transactional()],
  handler: async ({ input, ctx }) => {
    const db = getTx<typeof ds.client>(ctx);
    const order = await db.order.create({ data: ... });
    await db.audit.create({ data: { event: 'order_created', orderId: order.id } });
    return order;
  },
});

内置适配器

  • prismaDataSource(prisma) — Prisma
  • drizzleDataSource(db) — Drizzle
  • createMemoryDataSource(initial) — 内存(仅示例 / 单测)
  • 自己实现 DataSource 接口适配任何驱动

getTx 设计

通过 AsyncLocalStorage 自动透传事务,业务代码不需要传 tx 参数

// service.ts
function userService_create(ctx, data) {
  const db = getTx(ctx);   // 自动拿到事务/非事务客户端
  return db.user.create(...);
}

// 上层是否包了 transactional() 都不影响 service 写法