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config-lib-engine

v1.2.0

Published

config server

Downloads

3

Readme

概要说明

  • 产品配置不再配置很多表和子表,直接在配置文件中一目了然完成配置
  • 产品配置结果容易转换成前台需要的格式,免去后台开发的负担
  • 产品配置微服务化,独立部署独立实现服务,完全自包含
  • 可以集中收集配置各个应用的配置信息,如产品配置等等
  • 配置数据不再放到数据库中,特别是去O,不再依赖额外的基础设施
  • 方便配置进行版本控制(和库表保存比)
  • 方便在不同环境部署不同的分支和版本(和库表保存比)
  • 方便继续演进服务,如过滤,单条配置查询等等

配置文件

支持配置文件的格式

  • yaml/yml
  • md/markdown
  • json,json5
  • csv,tsv

使用 yaml 做配置技术上的优势

  • 层次,对象,数组结构
  • 引用,避免重复
  • 各个数据类型写法简洁,可强制设置类型
  • 字符串可控制换行不换行
  • 简洁干净,避开各种封闭符号,如:引号、各种括号等
  • 注释方便,一次注释一整个 branch

markdown 配置

  • 可以随意些其他文档,直接忽略
  • 支持 table 写法
  • 取第一个 table 作为数据源
  • table 表头作为每条记录的字段 key
  • table 表头支持 name:num 方式,将字符串转换成数字返回

目录配置

每个目录可以配置 config.js 文件,里面通过 exports.xxx 配置校验器,目录服务等等

validator 配置

exports.validator = (filename, config) => configValicator;
  • exports.validator 为校验器工厂函数
  • 根据 filename 配置文件名称,config 配置解析完的数据结构,返回校验器函数。
  • 返回的校验器可以采用各种第三方校验包支持(需应用自己npm引用),也可以自己手写,
  • 推荐使用 superstruct 校验

目录索引服务配置

范例见 services/CompProduct/config.js

exports.index = subMap =>
  Object.entries(subMap).map(([k, v]) => ({
    fileName: k,
    productName: v.xxProductName,
  }));;
  • exports.index 为访问 /dirname/ (注意最后面的斜杠) 时执行,结果作为接口响应返回
  • subMap 参数被框架自动注入,值为文件名到对应解析好的配置数据结构的 key/value 对象结构
  • 上面范例当访问 /CompProduct/ 时,将返回下面多个配置文件的数组,每项包含文件名和对应配置的xxProductName数据项

开发运行服务

版本管理

npm test 加载全部配置,全部通过校验后,进程退出返回成功0;git 版本提交前可以通过 husky 确保检查成功后才允许提交

运行阶段

pm2 cluster 引导服务时,只有当全部配置加载和校验通过后,才会发出 process.send('ready'),开始接受请求。 因此 pm2 集群模式下,可以完全做到零中断重启,全量更新。

参数筛选

普通调用会将配置文件内容全部返回,而带参数删选范例,只返回了匹配查询串的一条记录,如:

curl 'http://127.0.0.1:3019/example/table?PRODUCT_ID=90529831'
{"respCode":0,"respDesc":"","data":[{"PRODUCT_ID":"90529831","PRODUCT_ALLNAME":"2019年2月天津冰激凌套餐99元档购机送券合约每月送35元花呗还款电子券(24个月)[社会渠道]","PRODUCT_NAME":"每月送35元花呗还款电子券(24个月)[社会渠道]","PRICE":720}]

pretty 响应

当请求参数带有 pretty 时,则响应按照两个空格缩进格式化完返回,方便人眼看

curl 'http://127.0.0.1:3019/example/schema'         
{"respCode":0,"respDesc":"","data":{"type":"object","properties":{"first_name":{"type":"string"},"last_name":{"type":"string"},"birthday":{"type":"string","format":"date"},"address":{"type":"object","properties":{"streed_address":{"type":"string"},"city":{"type":"string"},"state":{"type":"string"},"country":{"type":"string"}}}}}

curl 'http://127.0.0.1:3019/example/schema?pretty=1'
{
  "respCode": 0,
  "respDesc": "",
  "data": {
    "type": "object",
    "properties": {
      "first_name": {
        "type": "string"
      },
      "last_name": {
        "type": "string"
      },
      "birthday": {
        "type": "string",
        "format": "date"
      },
      "address": {
        "type": "object",
        "properties": {
          "streed_address": {
            "type": "string"
          },
          "city": {
            "type": "string"
          },
          "state": {
            "type": "string"
          },
          "country": {
            "type": "string"
          }
        }
      }
    }
  }
}

Roadmap

  • [x] git commit 快速扫描目录校验,不等待 chokidar 完成;可以按照计数来确定是否完成,完成无报错 exit 0
  • [x] example 应用第二个校验库 fastest-validator
  • [] 文档说明 config-lib 如何使用引擎和配置,包括版本提交校验,端口配置,库路径配置等等。
  • [] 配置校验,不通过校验,退出
  • [] markdown 配置复杂数据结构,突破单 table 限制
  • [] 只有变更过的文件才进行校验
  • [] 不同的部署环境(测试,预发布,生产等等)可以使用不同的配置文件