Heroku で動かす Node-RED にパスワード設定しノード追加インストールにも対応するメモ（npm prefix アプローチ）

git init

node_modules

npm init -y

{
  "name": "heroku-node-red-test2",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "heroku":"npm run heroku:subdir-install && heroku:auth-launch",
    "heroku:auth-launch": "node-red -u ./node-red_dir -s ./node-red_dir/settings.js",
    "heroku:subdir-install":"npm --prefix ./node-red_dir install ./node-red_dir",
    "node-red": "./node_modules/.bin/node-red -p 18801 -u ./node-red_dir -s ./node-red_dir/settings.js -D adminAuth=null",
    "init": "npm run init:mkdir && npm run init:get-settings.js",
    "init:mkdir": "node -e \"console.log('[START] mkdir-node-red_dir');const fs = require('fs');const path_nodered_dir = './node-red_dir';if (fs.existsSync(path_nodered_dir)) {console.log( '[ALERT] ' + path_nodered_dir + ' has existed!');} else {console.log('[OK] mkdir -> ' + path_nodered_dir );fs.mkdirSync(path_nodered_dir);}\"",
    "init:get-settings.js": "node -e \"const url = 'https://raw.githubusercontent.com/node-red/node-red/master/packages/node_modules/node-red/settings.js';const stream_output_path = './node-red_dir/settings.js';if (fs.existsSync(stream_output_path)) {console.log( '[ALERT] ' + stream_output_path + ' has existed!');} else {console.log('[START] download settings.js ...');const https = require('https');const fs = require('fs');const stream = fs.createWriteStream(stream_output_path);https.get(url, function(res){res.pipe(stream);res.on('end', function () {stream.close();console.log('[OK] got settings.js! -> ' + stream_output_path);});});}\""
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

npm run init

npm i node-red

npm run node-red

[{"id":"0a02324a2c7b357e","type":"http in","z":"2c233af411932df1","name":"","url":"/api1","method":"get","upload":false,"swaggerDoc":"","x":170,"y":240,"wires":[["f40e5c6c4cbfd700","0d089f742d65a107"]]},{"id":"f40e5c6c4cbfd700","type":"http response","z":"2c233af411932df1","name":"","statusCode":"","headers":{},"x":410,"y":240,"wires":[]},{"id":"0d089f742d65a107","type":"debug","z":"2c233af411932df1","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":430,"y":180,"wires":[]}]

web: npm run heroku

    adminAuth: {
      type: "credentials",
      users: function(username) {
        return new Promise(function(resolve) {
          // ここでユーザ名が許可されたユーザかどうかを
          // チェックする処理を行う
          if (process.env.NODERED_LOGIN_ID == username) {
            // ユーザ名が存在すればユーザオブジェクトを返す。
            // 'username' と 'permissions' プロパティは必須です。
            var user = { username: process.env.NODERED_LOGIN_ID, permissions: "*" };
            resolve(user);
          } else {
            // ユーザ名が存在しない場合はnullを返す。
            resolve(null);
          }
        });
      },
      authenticate: function(username, password) {
        return new Promise(function(resolve) {
          // ここでユーザー名/パスワードの組み合わせを
          // チェックする処理を行う
          if (process.env.NODERED_LOGIN_ID == username &&
            process.env.NODERED_LOGIN_PASSWORD == password) {
              // ユーザー名/パスワードの組み合わせが有効な場合はユーザオブジェクトを返す。
              // users(username);を呼び出すのと同様です。
              var user = { username: process.env.NODERED_LOGIN_ID, permissions: "*" };
              resolve(user);
          } else {
              // ユーザー名/パスワードの組み合わせが無効な場合は
              // nullを返す。
              resolve(null);
          }
        });
      }
    },

httpAdminRoot: '/admin',

git add .

git commit -m "init"

heroku create <サーバー名>

git push heroku master