feat: каркас Express + pg, health check

2026-05-29 21:56:20 +03:00
commit 814625ef57
5 changed files with 114 additions and 0 deletions
@@ -0,0 +1,16 @@
 # База данных
 DB_HOST=your-db-host.svc.cluster.local
 DB_PORT=5432
 DB_NAME=postgres
 DB_USER=your-user
 DB_PASS=your-password
 DB_SSLMODE=require
 # Сервер
 PORT=3000
 # Лимиты
 DEFAULT_LIMIT=15
 # Режим разработки (true = без Keycloak, читать X-Dev-User из заголовка)
 DEV_MODE=true
@@ -0,0 +1,16 @@
 {
  "name": "ipwhitelist",
  "version": "0.1.0",
  "description": "IP WhiteList microservice for cloud provider",
  "main": "server.js",
  "scripts": {
    "start": "node server.js",
    "dev": "node --watch server.js"
  },
  "dependencies": {
    "dotenv": "^16.4.7",
    "ejs": "^3.1.10",
    "express": "^4.21.1",
    "pg": "^8.13.1"
  }
 }
@@ -0,0 +1,45 @@
 const express = require('express');
 const path = require('path');
 require('dotenv').config();
 const { checkConnection } = require('./src/db');
 const app = express();
 const PORT = process.env.PORT || 3000;
 // Шаблоны
 app.set('view engine', 'ejs');
 app.set('views', path.join(__dirname, 'views'));
 // Статика
 app.use(express.static(path.join(__dirname, 'public')));
 // Парсинг форм
 app.use(express.urlencoded({ extended: true }));
 // Health check (для nubes_nodejs)
 app.get('/healthz', async (req, res) => {
  try {
    await checkConnection();
    res.status(200).send('OK');
  } catch (e) {
    res.status(500).send('DB error');
  }
 });
 // Главная страница
 app.get('/', (req, res) => {
  res.render('index', { title: 'IP WhiteList' });
 });
 async function start() {
  try {
    const ok = await checkConnection();
    console.log('DB connected:', ok);
    app.listen(PORT, () => console.log(`Server on port ${PORT}`));
  } catch (e) {
    console.error('DB connection failed:', e.message);
    process.exit(1);
  }
 }
 start();
@@ -0,0 +1,24 @@
 const { Pool } = require('pg');
 require('dotenv').config();
 const pool = new Pool({
  host: process.env.DB_HOST,
  port: process.env.DB_PORT || 5432,
  database: process.env.DB_NAME || 'postgres',
  user: process.env.DB_USER,
  password: process.env.DB_PASS,
  ssl: process.env.DB_SSLMODE === 'require' ? { rejectUnauthorized: false } : false,
  max: 10,
  idleTimeoutMillis: 30000,
 });
 pool.on('error', (err) => {
  console.error('DB pool error:', err.message);
 });
 async function checkConnection() {
  const { rows } = await pool.query('SELECT 1 AS ok');
  return rows[0].ok === 1;
 }
 module.exports = { pool, checkConnection };
@@ -0,0 +1,13 @@
 <!DOCTYPE html>
 <html lang="ru">
 <head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title><%= title %></title>
  <link rel="stylesheet" href="/style.css">
 </head>
 <body>
  <h1><%= title %></h1>
  <p>Сервис работает. БД подключена.</p>
 </body>
 </html>