docker: backend test ok

apps/backend

-../backend/
\ No newline at end of file

apps/backend/.env

+TEACHING_RESOLUTION=(3840x2160)
+TEACHING_IMAGE_PATH=/home/falinux/sds/backend/public/image/capture.jpg
+WPO=1003_AOI01
\ No newline at end of file

apps/backend/.env.dev

+TEACHING_RESOLUTION=(3840x2160)
+TEACHING_IMAGE_PATH=/home/falinux/sds/backend/public/image/capture.jpg
+WPO=1003_AOI01
\ No newline at end of file

apps/backend/.gitignore

+
+node_modules
+public/

apps/backend/README.md

+# Node.js 설치
+## 설치
+- curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash - 
+- sudo apt-get update
+- sudo apt-get install -y nodejs build-essential 
+
+## 프로젝트 실행 안될 경우
+- 프로젝트 폴더/ rm -rf node_modules
+- 프로젝트 폴더/ npm install
+
+## NPM 이상 있을 경우
+- sudo npm  cache clean --force
+- Sudo npm install –g n
+- sudo n stable
+- sudo npm install –g npm
+* 참고 : https://d2fault.github.io/2018/04/30/20180430-install-and-upgrade-nodejs-or-npm/ 
+
+## 버전확인
+- Node : node.js  -v 
+- NPM  : npm –v 
+
+## Vue 설치
+- sudo npm install -g @vue/cli 
+
+## cache 삭제
+- sudo npm cache verify
+- sudo npm cache clean --force
+
+test
\ No newline at end of file

apps/backend/app.js

+const express = require('express')
+const http = require('http')
+const path = require('path')
+const fs = require('fs');
+const dgram = require('dgram');
+const dotenv  = require('dotenv');
+const app = express()
+const bodyParser = require('body-parser'); //
+
+app.use(express.json({ limit : "50mb" })); 
+app.use(express.urlencoded({ limit:"50mb", extended: false }));
+
+dotenv.config({
+    path: path.resolve(
+      process.cwd(),
+      process.env.NODE_ENV == "production" ? ".env" : ".env.dev"
+    )
+});
+
+const server = dgram.createSocket('udp4');
+// socket 실행
+server.bind(9400);
+
+server.on('listening', function() {
+    console.log('Socket Port : 9400');
+});
+
+
+server.on('message', function(msg ) {
+
+    udpResultMsg =  msg.toString();
+    console.log("케켘", udpResultMsg)
+
+});
+
+server.on('close', function() {
+    console.log('Server UDP Socket close');
+});
+
+const client = dgram.createSocket('udp4');
+const clientPort= 9300;
+//  const clientPort= 4403;
+
+// const clientHost = '192.168.52.122'; //inet
+const clientHost ='192.168.52.38';
+
+// Error [ERR_SOCKET_DGRAM_NOT_RUNNING]: Not running 
+client.on('close', function() {
+    console.log('Client UDP socket close')
+});
+
+// const jsonFile = fs.readFileSync('./json/projects.json', 'utf8');
+// console.log(jsonFile);
+
+// const jsonData = JSON.parse(jsonFile);
+
+// console.table(jsonData);
+
+//Post 방식은 Get 과 다르기 때문에 body-parser 를 설치해서 사용해야한다.
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({extended: false}))
+
+//vue router 연동하기 위한 설정
+app.use(require('connect-history-api-fallback')());
+
+app.use(express.static(path.join(__dirname, 'public')));
+
+app.set('port',process.env.PORT || 3001);
+
+/* udp 통신으로 매니저에게 받는 결과값*/
+let udpResultMsg = ''
+/* udp 통신 기다리는 시간*/
+let udpAwaitTime = 0
+
+let newProjectNum = 0
+
+app.get('/api/getWpoId',(req,res) => {
+    let id = process.env.WPO
+    res.send(id)
+})
+
+app.post('/api/projectInfo',async (req,res) => {
+    const dataBuffer = fs.readFileSync('./json/project.json')
+    const project = JSON.parse(dataBuffer.toString())
+    console.log('로컬 프로젝트 :' , project)
+    
+    // 받아온 값이 있을경우
+    if(Object.keys(req.body).length !== 0 ){
+        project.admin = req.body.admin
+        project.aoiUid = req.body.aoiUid
+        project.counter = req.body.counter
+        project.createDate = req.body.createDate
+        project.name = req.body.name
+        project.state = req.body.state
+        project.successDate = req.body.successDate
+        project.uid = req.body.uid
+        project.user = req.body.user
+        project.infos = req.body.infos
+        project.updateDate = new Date()
+        fs.writeFileSync('./json/project.json',JSON.stringify(project) , (err) =>{
+            if ( err ) return err; 
+        })
+    }
+
+    res.status(200).json(project)
+    
+})
+
+const wrapper = asyncFn => { return (async (req, res, next) => { try { return await asyncFn(req, res, next); } catch (error) { return next(error); } }); };
+
+//https://kjwsx23.tistory.com/199 express 와 async ,await 이슈
+//express async await wrapper 함수를 써서 감싸거나 라이브러리를 써야 한다. 
+app.get('/api/requestManager',wrapper(async (req,res)=>{
+    
+    req.query.image_path = process.env.TEACHING_IMAGE_PATH
+
+    if(req.query.cmd === "neuro_check"){
+        req.query.teaching = `${process.env.TEACHING_IMAGE_PATH}-${req.query.project_num}-2-${process.env.TEACHING_RESOLUTION}${req.query.teaching_info}` 
+    } 
+
+    console.log("param :",JSON.stringify(req.query) )
+
+    sendToManager (JSON.stringify(req.query))
+
+    let requestMsg = ''
+
+    switch(req.query.cmd){
+        case "neuro_start":
+            requestMsg = 'neuro_start_done'
+            break
+        case "neuro_ready": 
+            requestMsg = 'neuro_ready_done'
+            break 
+        case "neuro_capture": 
+            requestMsg = 'capture_done'
+            break 
+        case "neuro_check" :
+            requestMsg = 'neuro_result'
+            break           
+        // case "neuro_replay" :
+        //     requestMsg = 'neuro_result'
+        //     break           
+
+        default:
+            res.status(404)
+    }
+
+    await responseManager(requestMsg)
+
+        .then(data => {
+            res.status(200).json(data)
+        })
+        .catch(error =>{
+            res.status(404).send(error);
+        })
+}))
+
+//UDP 메세지 보냄 통신
+function sendToManager(msg){
+    client.send(msg, 0, msg.length, clientPort, clientHost, function(err) {
+        if ( err ) return ; 
+        console.log("UDP send Msg ")
+    });
+}
+
+// await Promise 응답해야됨
+function responseManager (requestMsg) {
+   return new Promise((resolve, reject) => {
+        let delay = 100; //ms 단위로 체크
+        let waitingTime = 0 //대기 시간 
+ 
+        let timer = setInterval(() => {
+            if(requestMsg === JSON.parse(udpResultMsg).cmd ){
+                if(requestMsg === 'capture_done'){
+                    let base64 = fs.readFileSync('./public/image/capture.jpg' , 'base64')
+                    
+                    let msg = JSON.parse(udpResultMsg)
+                    msg.imageBase64 = base64
+                    udpResultMsg = JSON.stringify(msg)
+                    // console.log("야이 씨벌 :", JSON.parse(udpResultMsg))
+                    // console.log("base64 :",base64) 
+                }
+                resolve(udpResultMsg)
+                clearInterval(timer)
+            }else if(waitingTime === 500000){
+                reject('No response from Manager')
+                clearInterval(timer)
+            }else{
+                waitingTime = waitingTime + delay
+            }
+        },delay)
+    });
+}
+ 
+http.createServer(app).listen(app.get('port'),function(){
+    console.log('WebServer Port: ' +app.get('port'))
+})

apps/backend/json/project_num_seq.json

+[{"project_num_seq":4}]
\ No newline at end of file

apps/backend/package.json

+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node app.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "body-parser": "^1.19.0",
+    "connect-history-api-fallback": "^1.6.0",
+    "dotenv": "^10.0.0",
+    "express": "^4.17.1"
+  }
+}