rest-router-model

rest-router-model是一个根据资源描述JOSN配置文件(Resource Config)，自动生成REST风格的HTTP接口，并且完成数据模型映射。 它具有功能扩展性，可以通过BaseBusiness类继承，实现业务功能扩展。它是完全业务内包，只需要提供资源config和数据库配置即可。 这样可以更好更快的构建一个微服务，你只需要关心如何设计好你的资源模型。

框架：目前只支持koa上使用。

数据库：目前只支持SQL系列数据库，如Postgres, MSSQL, MySQL, MariaDB, SQLite3, Oracle, Amazon Redshift。(以knex为准)

安装

需要node v8.9.0 版本，或者更高的版本，需支持async函数.

  $ npm install rest-router-model

例子

我们将以一个学校管理服务（SchoolServer）为例: 首先编写一个资源配置文件：resourceConfig.js，下一节会详细的我们如何配置resourceConfig。 以下resourceConfig描述了class资源、student资源、activityGroup资源、还有一个描述学生与活动小组关联关系的studentActivityGroupMembership资源。 在student中通过super字段描述了他所属于上级资源为class， 在studentActivityGroupMembership中，通过membership字段描述他所要关联的那两个资源。

// resourceConfig.js

module.exports = {
    // 班级
    "class": {
        rest_api: 'base',
        params: {
            name:{type:'string'},
            description:{type:'string'},
            createdAt: {type:'time'},
            modifiedAt:{type:'time'},
        },
    },
    // 学生
    "student":{
        rest_api: 'base',
        super: 'class',
        params: {
            name:{type:'string'},
            description:{type:'string'},
            createdAt: {type:'time'},
            modifiedAt:{type:'time'},
        },
    },
    // 活动组 （如：学生会、校蓝球队、...等）
    "activityGroup": {
        type: 'membershipContainer',
        rest_api: 'base',
        params: {
            name:{type:'string'},
            description:{type:'string'},
            createdAt: {type:'time'},
            modifiedAt:{type:'time'},
        },
    },
    // 学生与活动小组的关联关系统
    "studentActivityGroupMembership":{
        type: 'membership',
        memberships : ['student','activityGroup'],
        rest_api: 'base',
        params: {
            name:{type:'string'},
            description:{type:'string'},
            createdAt: {type:'time'},
            modifiedAt:{type:'time'},
        },
    }
};

然后server.js中使用rest-router-model

// server.js

const Koa = require('koa');
const restRouterModel = require('rest-router-model');
const resourceConfig = require('./resourceConfig');

let knexConfig = {
    client: 'mysql',
    connection: {
        host : 'localhost',
        user : 'db-user',
        password : 'xxxxxx',
        database : 'SchoolServerDB',
        port : 3306
    }
}
let extendBusinesses = {};        // 扩展业务接口支持
let options = {
    serverName: 'SchoolServer'，  // 配置服务的名称
    ip: 'school.server.com'，     // 配置服务域名或ip
    port: '3000'，                // 配置服务监听端口
};
const app = new Koa();
restRouterModel.koaRestRouter(resourceConfig, extendBusinesses, knexConfig, options).then(koa_router=>{
    app.use(koa_router.routes());
    app.listen(options.port);
});

运行成功过后，插件会在router的中注册，以下REST HTTP接口：

| Resource | Method | URI | |:--------|:------| :---| |class | POST | /api/:version/classes | |class | GET | /api/:version/classes | |class | GET | /api/:version/classes/:uuid | |class | PUT,POST | /api/:version/classes/:uuid | |class | DELETE | /api/:version/classes/:uuid | |student | POST | /api/:version/students /api/:version/classes/:classUUID/students | |student | GET | /api/:version/students /api/:version/classes/:classUUID/students /api/:version/activityGroups/:activityGroupUUID/students | |student | GET | /api/:version/students/:uuid /api/:version/classes/:classUUID/students/:uuid| |student | PUT,POST | /api/:version/students/:uuid /api/:version/classes/:classUUID/students/:uuid| |student | DELETE | /api/:version/students/:uuid /api/:version/classes/:classUUID/students/:uuid| |activityGroup | POST | /api/:version/activityGroups | |activityGroup | GET | /api/:version/activityGroups /api/:version/students/:studentUUID/activityGroups| |activityGroup | GET | /api/:version/activityGroups/:uuid | |activityGroup | PUT,POST | /api/:version/activityGroups/:uuid | |activityGroup | DELETE | /api/:version/activityGroups/:uuid | |activityGroup | POST | /api/:version/activityGroups/:uuid/add | |activityGroup | POST | /api/:version/activityGroups/:uuid/remove | |studentActivityGroupMemberships | POST | /api/:version/studentActivityGroupMemberships | |studentActivityGroupMemberships | GET | /api/:version/studentActivityGroupMemberships /api/:version/activityGroups/:activityGroupUUID/studentActivityGroupMemberships /api/:version/students/:studentUUID/studentActivityGroupMemberships | |studentActivityGroupMemberships | GET | /api/:version/studentActivityGroupMemberships/:uuid| |studentActivityGroupMemberships | PUT,POST | /api/:version/studentActivityGroupMemberships/:uuid | |studentActivityGroupMemberships | DELETE | /api/:version/studentActivityGroupMemberships/:uuid |

待续... ...