TechEmpower.FrameworkBenchmarks/frameworks/JavaScript/nodejs/handlers/sequelize-postgres.js

const h = require('../helper');
const Promise = require('bluebird');

const Sequelize = require('sequelize');
const sequelize = new Sequelize('hello_world', 'benchmarkdbuser', 'benchmarkdbpass', {
  host: 'TFB-database',
  dialect: 'postgres',
  logging: false
});

const Worlds = sequelize.define('World', {
  id:           { type: 'Sequelize.INTEGER' },
  randomnumber: { type: 'Sequelize.INTEGER' }
}, {
  timestamps: false,
  freezeTableName: true
});

const Fortunes = sequelize.define('Fortune', {
  id:      { type: 'Sequelize.INTEGER' },
  message: { type: 'Sequelize.STRING' }
}, {
  timestamps: false,
  freezeTableName: true
});

const randomWorldPromise = () => {
  return Worlds.findOne({
    where: { id: h.randomTfbNumber() }
  }).then((results) => {
    return results;
  }).catch((err) => process.exit(1));
}

module.exports = {

  SingleQuery: (req, res) => {
    randomWorldPromise().then((world) => {
      h.addTfbHeaders(res, 'json');
      res.end(JSON.stringify(world));
    });
  },

  MultipleQueries: (queries, req, res) => {
    const worldPromises = [];

    for (let i = 0; i < queries; i++) {
      worldPromises.push(randomWorldPromise());
    } 

    Promise.all(worldPromises).then((worlds) => {
      h.addTfbHeaders(res, 'json');
      res.end(JSON.stringify(worlds));
    });
  },

  Fortunes: (req, res) => {
    Fortunes.findAll().then((fortunes) => {
      fortunes.push(h.ADDITIONAL_FORTUNE);
      fortunes.sort((a, b) => a.message.localeCompare(b.message));

      h.addTfbHeaders(res, 'html');
      res.end(h.fortunesTemplate({
        fortunes: fortunes
      }));
    }).catch((err) => process.exit(1));
  },

  Updates: (queries, req, res) => {
    const worldPromises = [];

    for (let i = 0; i < queries; i++) {
      worldPromises.push(randomWorldPromise());
    }

    const worldUpdate = (world) => {
      world.randomNumber = h.randomTfbNumber();

      return Worlds.update({
        randomNumber: world.randomNumber
      },
      {
        where: { id: world.id }
      }).then((results) => {
        return world;
      }).catch((err) => process.exit(1));
    }

    Promise.all(worldPromises).then((worlds) => {
      const updates = worlds.map((e) => worldUpdate(e));

      Promise.all(updates).then((updated) => {
        h.addTfbHeaders(res, 'json');
        res.end(JSON.stringify(updated));
      });
    });
  }

}