add serverless of version-control

packages/version-control-api/README.md

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+# 快速构建 koa-starter
+
+**中文** | [English](./README_EN.md)
+
+## 简介
+
+koa-starter 模板使用 Tencent SCF 组件及其触发器能力，方便的在腾讯云创建，配置和管理一个 koa-starter 应用。
+
+## 快速开始
+
+### 1. 安装
+
+```bash
+# 安装 Serverless Framework
+npm install -g serverless
+```
+
+### 2. 创建
+
+通过如下命令直接下载该例子：
+
+```bash
+serverless init koa-starter --name example
+cd example
+```
+
+### 3. 部署
+
+在 `serverless.yml` 文件所在的项目根目录，运行以下指令，将会弹出二维码，直接扫码授权进行部署：
+
+```bash
+serverless deploy
+```
+
+> **说明**：如果鉴权失败，请参考 [权限配置](https://cloud.tencent.com/document/product/1154/43006) 进行授权。
+
+### 4. 查看状态
+
+执行以下命令，查看您部署的项目信息：
+
+```bash
+serverless info
+```
+
+### 5. 移除
+
+可以通过以下命令移除 koa-starter 应用
+
+```bash
+serverless remove
+```
+
+### 账号配置（可选）
+
+serverless 默认支持扫描二维码登录，用户扫描二维码后会自动生成一个 `.env` 文件并将密钥存入其中.
+如您希望配置持久的环境变量/秘钥信息，也可以本地创建 `.env` 文件, 
+把从[API 密钥管理](https://console.cloud.tencent.com/cam/capi)中获取的 `SecretId` 和`SecretKey` 填入其中.
+
+> 如果没有腾讯云账号，可以在此[注册新账号](https://cloud.tencent.com/register)。
+
+```bash
+# 腾讯云的配置信息
+touch .env
+```
+
+```
+# .env file
+TENCENT_SECRET_ID=123
+TENCENT_SECRET_KEY=123
+```

packages/version-control-api/README_EN.md

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+# Quickly create and deploy koa-starter application
+
+[中文](./README.md) | **English**
+
+## Introduction
+
+Easily deploy koa-starter applications to Tencent Cloud's serverless infrastructure using this Serverless Framework Component.
+Your application will auto-scale, never charge you for idle time, and require little-to-zero administration.
+
+## Quick Start
+
+### 1. Install
+
+```bash
+# Install Serverless Framework
+npm install -g serverless
+```
+
+### 2. Initialize
+
+Initializing the koa-starter template by running this following command:
+
+```bash
+serverless init koa-starter --name example
+cd example
+```
+
+### 3. Deploy
+
+You can use following command to deploy the APP.
+
+```bash
+cd koa-starter
+serverless deploy
+```
+
+This command will walk you through signing up a Tencent Cloud Account to deploy the APP.
+
+### 4. Monitor
+
+Anytime you need to know more about your running express instance, you can run `serverless info` to view the most critical info. 
+This is especially helpful when you want to know the outputs of your instances so that you can reference them in another instance. 
+You will also see a url where you'll be able to view more info about your instance on the Serverless Dashboard.
+
+It also shows you the status of your instance, when it was last deployed, and how many times it was deployed. 
+To dig even deeper, you can pass the --debug flag to view the state of your component instance in case the deployment failed for any reason.
+
+```bash
+serverless info
+```
+
+### 5. Remove
+
+If you wanna tear down your entire infrastructure that was created during deployment, 
+just run `serverless remove` and serverless will remove all the data it needs from the built-in state storage system to delete only the relevant cloud resources that it created.
+
+```bash
+serverless remove
+```
+
+### Setting up credentials (Optional)
+
+By default, you are able to login your Tencent Cloud account by scanning QR code and an `.env` file with credentials is auto generated.
+The credentials will be expired after 2 hours.
+If you would like to use persistent credentials, 
+you can [create an API Key here](https://console.cloud.tencent.com/cam/capi) and add the `SecretId` and `SecretKey` into the `.env` file
+
+> If you don's have a Tencent Cloud Account, you can register [here](https://cloud.tencent.com/register)
+
+```bash
+# Add your Tencent credentials here
+touch .env
+```
+
+
+```
+# .env file
+TENCENT_SECRET_ID=123
+TENCENT_SECRET_KEY=123
+```

packages/version-control-api/controller/version.js

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+'use strict';
+
+const { Pool } = require('pg');
+
+function ApiError(code, msg) {
+  const e = new Error(msg);
+  e.code = code;
+  return e;
+}
+
+let pgPool;
+
+module.exports = {
+  async getPool() {
+    if (!pgPool) {
+      pgPool = new Pool({
+        connectionString: 'postgresql://tencentdb_8ygfbnqf:ib4%7C0)DS6%24CldO1@10.0.0.7:5432/tencentdb_8ygfbnqf\n',
+      });
+      // init table
+      await pgPool.query(`CREATE TABLE IF NOT EXISTS versions (
+        ID       SERIAL PRIMARY      KEY,
+        VERSION           TEXT         NOT NULL,
+        URL          CHAR(50)     NOT NULL
+      );`);
+      return pgPool;
+    } else {
+      return pgPool;
+    }
+  },
+  async getVersionList() {
+    const pool = await this.getPool();
+    const client = await pool.connect();
+    const { rows } = await client.query({
+      text: 'select * from versions',
+    });
+    await client.end();
+    return rows;
+  },
+  async addVersion(versionInfo) {
+    const pool = await this.getPool();
+    const { version, url } = versionInfo;
+    const deleteWhiteOfVersion = version.trim()
+    const deleteWhiteOfUrl = url.trim()
+    const existVersion = await this.getVersion(deleteWhiteOfVersion);
+    if (existVersion) {
+      throw new ApiError(1000, `Version ${deleteWhiteOfVersion} exist.`);
+    }
+    const client = await pool.connect();
+    const { rowCount } = await client.query({
+      text: 'INSERT INTO versions(version, url) VALUES($1, $2)',
+      values: [deleteWhiteOfVersion, deleteWhiteOfUrl],
+    });
+    await client.end();
+    return rowCount === 1;
+  },
+  async getVersion(version) {
+    try {
+      const pool = await this.getPool();
+      const client = await pool.connect();
+      const { rows } = await client.query({
+        text: 'SELECT * FROM versions WHERE version = $1',
+        values: [version],
+      });
+      await client.end();
+      if (rows.length > 0) {
+        return rows;
+      }
+      return false;
+    } catch (e) {
+      throw new ApiError(1001, e);
+    }
+  },
+  async getUrlByVersion(version){
+    try{
+      const pool = await this.getPool();
+      const client = await pool.connect();
+      const { rows } = await client.query({
+        text: 'SELECT URL FROM versions WHERE version = $1',
+        values: [version],
+      });
+      await client.end();
+      return rows;
+    }catch (e) {
+      throw new ApiError(1001, e);
+    }
+  },
+  async deleteVersion(version) {
+    const pool = await this.getPool();
+    const client = await pool.connect();
+    const { rows } = await client.query({
+      text: 'DELETE FROM versions WHERE version = $1',
+      values: [version],
+    });
+    await client.end();
+    return rows;
+  },
+};
+

packages/version-control-api/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Serverless Component - Express.js</title>
+    <style lang="css">
+      h1 {
+        text-align: center;
+        width: 600px;
+        margin: 300px auto;
+      }
+    </style>
+  </head>
+  <body>
+    <h1>
+      Welcome to Koa.js application created by
+      <a href="https://serverlesscloud.cn/">Serverless Framework.</a>
+    </h1>
+  </body>
+</html>

packages/version-control-api/package.json

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+{
+  "name": "koa-starter",
+  "version": "1.0.0",
+  "description": "",
+  "main": "sls.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "yugasun",
+  "license": "MIT",
+  "devDependencies": {
+    "@types/koa-router": "^7.4.1",
+    "koa": "^2.11.0",
+    "koa-bodyparser": "^4.3.0",
+    "koa-router": "^8.0.8",
+    "koa-sendfile": "^2.0.1",
+    "pg": "^7.14.0"
+  }
+}

packages/version-control-api/serverless.yml

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+component: koa
+name: dapp-version-control-api
+app: dapp-version-control-db
+
+inputs:
+  entryFile: sls.js #以您实际入口文件名为准
+  src:
+    src: ./
+    exclude:
+      - .env
+  region: ap-guangzhou
+  functionName: dapp-version-api # 云函数名称
+  runtime: Nodejs10.15
+  serviceName: dappVersionService # api网关服务名称
+  apigatewayConf:
+    protocols:
+      - http
+      - https
+    environment: release
+    enableCORS: true #  允许跨域

packages/version-control-api/sls.js

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+const Koa = require('koa')
+const KoaRouter = require('koa-router')
+const sendFile = require('koa-sendfile')
+const path = require('path')
+
+const app = new Koa()
+const router = new KoaRouter()
+
+// Routes
+router.get(`/*`, async (ctx) => {
+  await sendFile(ctx, path.join(__dirname, 'index.html'))
+})
+
+app.use(router.allowedMethods()).use(router.routes());
+
+// don't forget to export!
+module.exports = app