Hands-On Dependency Injection in Go

Explore various dependency injection methods in Go such as monkey patching, constructor injection, and method injection

Key Features
Learn to evaluate Code UX and make it better
Explore SOLID principles and understand how they relate to dependency injection
Use Google's wire framework to simplify dependence management
Book Description
Hands-On Dependency Injection in Go takes you on a journey, teaching you about refactoring existing code to adopt dependency injection (DI) using various methods available in Go.

Of the six methods introduced in this book, some are conventional, such as constructor or method injection, and some unconventional, such as just-in-time or config injection. Each method is explained in detail, focusing on their strengths and weaknesses, and is followed with a step-by-step example of how to apply it. With plenty of examples, you will learn how to leverage DI to transform code into something simple and flexible. You will also discover how to generate and leverage the dependency graph to spot and eliminate issues. Throughout the book, you will learn to leverage DI in combination with test stubs and mocks to test otherwise tricky or impossible scenarios.

Hands-On Dependency Injection in Go takes a pragmatic approach and focuses heavily on the code, user experience, and how to achieve long-term benefits through incremental changes.

By the end of this book, you will have produced clean code that’s easy to test.

What you will learn
Understand the benefits of DI
Explore SOLID design principles and how they relate to Go
Analyze various dependency injection patterns available in Go
Leverage DI to produce high-quality, loosely coupled Go code
Refactor existing Go code to adopt DI
Discover tools to improve your code’s testability and test coverage
Generate and interpret Go dependency graphs
Table of Contents
Never Stop Aiming for Better
SOLID Design Principles for Go
Coding for User Experience
Introduction to the ACME Registration Service
Dependency Injection with Monkey Patching
Dependency Injection with Constructor Injection
Dependency Injection with Method Injection
Dependency Injection by Config
Just-in-Time Dependency Injection
Off-the-Shelf Injection
Curb Your Enthusiasm
Reviewing Our Progress
Authors
Corey Scott

Corey Scott is a senior software engineer and architect living in Melbourne, Australia. He has been programming professionally since 2000 with the last 5 years spent building large scale distributed services in Go. An occasional technical speaker and blogger on a variety of software related topics, he is most passionate about the ideals of Software Craftsmanship and always enjoys a good debate about software engineering, continuous delivery, testing or clean coding.