dg-npm-templates/templates/dg-nodejs-backend-app/src/session.js

Npx generator for react app dependency creation by digite

const sessions = require("express-session");
const MemoryStore = require("express-session").MemoryStore;
const RedisStore = require("connect-redis")(sessions);
const redis = require("redis");

global.store = null;

if (process.env.REDIS_HOST && process.env.REDIS_PORT) {
    const client = redis.createClient({ legacyMode: true });

    client.on("error", function (err) {
        console.log("Could not establish a connection with redis for session.", err);
    });

    client.on("connect", function (err) {
        if (err) {
            console.log(err);
        }

        console.log("Connected to redis successfully for session");
    });

    client.connect().catch(console.error);

    global.store = new RedisStore({
        host: process.env.REDIS_HOST,
        port: process.env.REDIS_PORT,
        auth_pass: process.env.REDIS_PASSWORD,
        client
    });
} else {
    global.store = new MemoryStore();
}

const setupSession = app => {
    app.use(
        sessions({
            store: global.store,
            secret: process.env.SESSION_SECRET,
            resave: false,
            saveUninitialized: true,
            cookie: {
                secure: process.env.PROD !== "false" ? true : false, // if true only transmit cookie over https
                httpOnly: true, // if true prevent client side JS from reading the cookie
                maxAge: 1000 * 60 * 60 * 24 // session max age in miliseconds
            }
        })
    );
};

module.exports = { 
    setupSession
};