Book Image

Continuous Integration, Delivery, and Deployment

By : Sander Rossel
Book Image

Continuous Integration, Delivery, and Deployment

By: Sander Rossel

Overview of this book

The challenge faced by many teams while implementing Continuous Deployment is that it requires the use of many tools and processes that all work together. Learning and implementing all these tools (correctly) takes a lot of time and effort, leading people to wonder whether it's really worth it. This book sets up a project to show you the different steps, processes, and tools in Continuous Deployment and the actual problems they solve. We start by introducing Continuous Integration (CI), deployment, and delivery as well as providing an overview of the tools used in CI. You'll then create a web app and see how Git can be used in a CI environment. Moving on, you'll explore unit testing using Jasmine and browser testing using Karma and Selenium for your app. You'll also find out how to automate tasks using Gulp and Jenkins. Next, you'll get acquainted with database integration for different platforms, such as MongoDB and PostgreSQL. Finally, you'll set up different Jenkins jobs to integrate with Node.js and C# projects, and Jenkins pipelines to make branching easier. By the end of the book, you'll have implemented Continuous Delivery and deployment from scratch.
Table of Contents (15 chapters)

Creating the Node.js Back-end

Now that the database is in place and we know how to browse collections and data in the database, we can start creating a backend powered by Node.js. To get your website to run on Node.js, all you need to do is create a JavaScript file and load it using Node. Node provides some packages that are at your disposal by using require as we have done before. The Node.js website had some Hello, Node.js! script on their website, but it was removed when the platform got more mature and the user base grew. Luckily, I still have it laying around somewhere and so we will create our first Node.js website. Put the following JavaScript code in a new file and name it index.js:

var http = require('http');
var server = http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello, Node...