| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157 | import express from 'ultimate-express';import { LRUCache } from 'lru-cache';import cluster, { isWorker } from 'node:cluster';import { maxQuery, maxRows } from './config.js';import fjs from 'fast-json-stringify';const { DATABASE } = process.env;const db = DATABASE ? await import(`./database/${DATABASE}.js`) : null;const jsonSerializer = fjs({  type: 'object',  properties: {    message: {      type: 'string',      format: 'unsafe',    }  }});const generateRandomNumber = () => Math.floor(Math.random() * maxRows) + 1;const parseQueries = (i) => Math.min(parseInt(i) || 1, maxQuery);const escapeHTMLRules = { '&': '&', '<': '<', '>': '>', '"': '"', "'": ''', '/': '/' };const unsafeHTMLMatcher = /[&<>"'\/]/g;const escapeHTMLCode = (text) => unsafeHTMLMatcher.test(text) ? text.replace(unsafeHTMLMatcher, function (m) { return escapeHTMLRules[m] || m; }) : text;const cache = new LRUCache({  max: maxRows});const app = express();app.set("etag", false);app.set("x-powered-by", false);app.get('/plaintext', (req, res) => {  res.setHeader('Server', 'UltimateExpress');  res.setHeader('Content-Type', 'text/plain');  res.end('Hello, World!');});app.get('/json', (req, res) => {  res.setHeader('Server', 'UltimateExpress');  res.setHeader('Content-Type', 'application/json');  res.end(jsonSerializer({ message: "Hello, World!" }));});if (db) {  app.get('/db', async (req, res) => {    res.setHeader('Server', 'UltimateExpress');    try {      const world = await db.find(generateRandomNumber());      res.json(world);    } catch (error) {      throw error;    }  });  app.get('/queries', async (req, res) => {    res.setHeader('Server', 'UltimateExpress');    try {      const queries = parseQueries(req.query.queries);      const worldPromises = new Array(queries);      for (let i = 0; i < queries; i++) {        worldPromises[i] = db.find(generateRandomNumber());      }      const worlds = await Promise.all(worldPromises);      res.json(worlds);    } catch (error) {      throw error;    }  })  app.get('/updates', async (req, res) => {    res.setHeader('Server', 'UltimateExpress');    try {      const queries = parseQueries(req.query.queries);      const worldPromises = new Array(queries);      for (let i = 0; i < queries; i++) {        worldPromises[i] = db.find(generateRandomNumber());      }      const worlds = await Promise.all(worldPromises);      for (let i = 0; i < queries; i++) {        worlds[i].randomNumber = generateRandomNumber();      }      await db.bulkUpdate(worlds);      res.json(worlds);    } catch (error) {      throw error;    }  })  app.get('/fortunes', async (req, res) => {    res.setHeader('Server', 'UltimateExpress');    try {      const fortunes = await db.fortunes()      fortunes.push({ id: 0, message: 'Additional fortune added at request time.' });      fortunes.sort((a, b) => (a.message < b.message) ? -1 : 1);      const n = fortunes.length      let i = 0, html = ''      for (; i < n; i++) html += `<tr><td>${fortunes[i].id}</td><td>${escapeHTMLCode(fortunes[i].message)}</td></tr>`      res        .header('Content-Type', 'text/html; charset=utf-8')        .end(`<!DOCTYPE html><html><head><title>Fortunes</title></head><body><table><tr><th>id</th><th>message</th></tr>${html}</table></body></html>`);    } catch (error) {      throw error;    }  })  let isCachePopulated = false  app.get('/cached-worlds', async (req, res) => {    res.setHeader('Server', 'UltimateExpress');    try {      if (!isCachePopulated) {        const worlds = await db.getAllWorlds();        for (let i = 0; i < worlds.length; i++) {          cache.set(worlds[i].id, worlds[i]);        }        isCachePopulated = true;      }      const count = parseQueries(req.query.count);      const worlds = new Array(count);      for (let i = 0; i < count; i++) {        worlds[i] = cache.get(generateRandomNumber());      }      res.json(worlds);    } catch (error) {      throw error;    }  });}app.listen(8080, () => {  console.log(`${isWorker ? `${cluster.worker.id}: ` : ''}Successfully bound to http://0.0.0.0:8080`);});
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