Book Image

Build Your Own Web Framework in Elixir

By : Aditya Iyengar
Book Image

Build Your Own Web Framework in Elixir

By: Aditya Iyengar

Overview of this book

Elixir's functional nature and metaprogramming capabilities make it an ideal language for building web frameworks, with Phoenix being the most ubiquitous framework in the Elixir ecosystem and a popular choice for companies seeking scalable web-based products. With an ever-increasing demand for Elixir engineers, developers can accelerate their careers by learning Elixir and the Phoenix web framework. With Build Your Own Web Framework in Elixir, you’ll start by exploring the fundamental concepts of web development using Elixir. You'll learn how to build a robust web server and create a router to direct incoming requests to the correct controller. Then, you'll learn to dispatch requests to controllers to respond with clean, semantic HTML, and explore the power of Domain-Specific Languages (DSL) and metaprogramming in Elixir. You'll develop a deep understanding of Elixir's unique syntax and semantics, allowing you to optimize your code for performance and maintainability. Finally, you'll discover how to effectively test each component of your application for accuracy and performance. By the end of this book, you'll have a thorough understanding of how Elixir components are implemented within Phoenix, and how to leverage its powerful features to build robust web applications.
Table of Contents (15 chapters)
1
Part 1: Web Server Fundamentals
4
Part 2: Router, Controller, and View
10
Part 3: DSL Design

Plugifying our HTTP server

To leverage the power of Plug for routing, error handling, and other uses, let’s define a Plug adapter for the Goldcrest.HTTPServer package.

Let’s start by defining a new package, plug_goldcrest_http_server:

$ mix new plug_goldcrest_http_server --module Plug.Goldcrest.HTTPServer

Now, let’s add :goldcrest_http_server and plug to our Mix dependencies:

lib/plug/goldcrest/http_server/conn.ex

defmodule Plug.Goldcrest.HTTPServer.MixProject do
  use Mix.Project
  # ..
  defp deps do
    [
      {:goldcrest_http_server, "~> 0.0.1"},
      {:plug, "~> 1.12.1"}
    ]
  end
end

Now, we can fetch the dependencies by running the following command:

$ mix deps.get

In this newly generated mix project, we can start by defining an adapter for Plug.Conn. Let’s...