index.js

const Promise = require("bluebird");
const express = require('express');
const expressSession = require('express-session');
const app = express();
const bodyParser = require('body-parser');
const AWS = require('aws-sdk');

AWS.config.update({
  region: 'us-west-2'
});
AWS.config.setPromisesDependency(require('bluebird'));

const db = new AWS.DynamoDB.DocumentClient();

const connect = require('connect');
const DynamoDBStore = require('connect-dynamodb')({session: expressSession});

var dbOptions = {
  table: 'node_sessions_test'
};

app.use(expressSession({
  secret: 'some secret',
  resave: true,
  saveUninitialized: true,
  store: new DynamoDBStore(dbOptions)
}));

app.listen(4001, () => {
  console.log('Server running on port 4001');
});

const requireLogin = (req, res, next) => {
  return Promise.try(() => {
    return Promise.try(() => {
      return true;
    })
    .then(() => {
      next();
    });
  });
}

app.get('/login', (req, res) => {
  return Promise.try(() => {
    return Promise.try(() => {
      return true;
    })
    .then(() => {
      req.session.userId = 3;
      // res.redirect('/get-etcs');
    });
  });
});

app.get('/get-items', requireLogin, (req, res, next) => {
  res.json(req.session);
});