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)

Gulp plugins

You may have guessed it, but Gulp on its own does not do a lot (I am having deja vu here). You need plugins to get any serious work done. Luckily, Gulp has quite a lot of those. The initial idea was that any Gulp plugin takes some input and outputs the result as a Node.js Stream object. However, in practice, this is often not the case. Some plugins return nothing, some write their output to disk and return the original input, while some watch files and never return at all. That sounds bad, but it does not have to be. You have to take into account that a lot of plugins are simply wrappers around other programs that were not created to work with Gulp (or any task runner) at all. Just be sure you read the plugin's documentation and use it as it was intended. Luckily, Gulp can work around these issues quite well.

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