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@zenweb/tenant

v4.0.1

Published

Zenweb Tenant module

Downloads

728

Readme

ZenWeb Tenant module

ZenWeb

多租户多数据库支持

安装

yarn add @zenweb/tenant

配置

编辑项目入口代码 src/index.ts

import { create } from 'zenweb';
import modTenant, { Tenant } from '@zenweb/tenant';

export const app = create();

/**
 * 租户配置信息(代码演示)
 */
const tenantsConfig: { [id: string]: Tenant } = {
  'a.demo.com': {
    server: 'S1',
    database: 'db_1',
  },
  'b.demo.com': {
    server: 'S2',
    database: 'db_2',
  },
};

app.setup(modTenant({
  tenantGetter: ctx => {
    const tenant = tenantsConfig[ctx.host];
    if (!tenant) {
      throw new Error('Tennat not exists: ' + ctx.host);
    }
    return tenant;
  },
  pools: {
    S1: { // 数据库服务器名称
      MASTER: { // 主库
        host: '127.0.0.1',
        port: 3306,
        user: 'root',
        password: '123456',
        charset: 'utf8mb4',
        timezone: '+08:00',
        connectionLimit: 100,
      },
      // 从库配置
      // SLAVES: []
    },
    S2: {
      MASTER: {
        host: '127.0.0.1',
        port: 3306,
        user: 'root',
        password: '',
        charset: 'utf8mb4',
        timezone: '+08:00',
        connectionLimit: 100,
      },
    },
  },
}));

代码中调用

使用 MySQL 原生查询

import { mapping, Context } from 'zenweb';

export class TestController {
  @mappping()
  dbtest(ctx: Context) {
    // 默认使用主库 MASTER
    await ctx.mysql.query("SELECT 1+1");
    // 指定使用主库
    await ctx.mysql.of("MASTER").query("SELECT 1+1");
    // 指定使用从库 - 对于没有配置从库的会自动切换成主库 MASTER
    await ctx.mysql.of("SLAVE*").query("SELECT 1+1");
  }
}

[可选] 集成 ZenORM

安装

# 生产依赖
yarn add zenorm

# 开发依赖
yarn add --dev @zenorm/generate @zenorm/generate-mysql

配置

package.jsonscripts 中增加如下代码,用于执行 dbgen 命令

{
  "scripts": {
    "dbgen": "zenorm-generate .dbgen.js"
  }
}

创建文件 .dbgen.js 用于生成数据库结构代码时连接到指定数据库

提示:运行时并不使用此配置

/** @type {import("@zenorm/generate").GenerateConfig} */
module.exports = {
  host: "localhost",
  port: 3306,
  user: "root",
  password: "",
  database: "zenorm_test",
  outputDir: "./model",
  bindQuery: true,
};

生成数据库结构代码

运行命令开始生成数据库结构代码

yarn dbgen

配置项目代码

编辑项目入口代码 src/index.ts

// 导入 ORM 生成的 bindQuery 方法
import { bindQuery } from './model';

// 修改配置好的 modTenant
// 集成 ZenORM
app.setup(modTenant({
  // ... modTenant 配置
  bindQuery, // ORM 查询绑定
});

代码中调用 ORM 模型

import { mapping } from 'zenweb';
import { User } from '../model';

export class TestController {
  @mapping()
  orm() {
    return User.find({ id: 1 }).get();
  }
}