Explore various dependency injection methods in Go such as monkey patching, constructor injection, and method injection
Key FeaturesLearn to evaluate Code UX and make it betterExplore SOLID principles and understand how they relate to dependency injectionUse Google's wire framework to simplify dependence managementBook DescriptionHands-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 learnUnderstand the benefits of DIExplore SOLID design principles and how they relate to GoAnalyze various dependency injection patterns available in GoLeverage DI to produce high-quality, loosely coupled Go codeRefactor existing Go code to adopt DIDiscover tools to improve your code’s testability and test coverageGenerate and interpret Go dependency graphsWho this book is forHands-On Dependency Injection in Go is for programmers with a few year s experience in any language and a basic understanding of Go. If you wish to produce clean, loosely coupled code that is inherently easier to test, this book is for you.
Table of ContentsNever Stop Aiming for BetterSOLID Design Principles for GoCoding for User ExperienceIntroduction to the ACME Registration Service Dependency Injection with Monkey PatchingDependency Injection with Constructor InjectionDependency Injection with Method InjectionDependency Injection by ConfigJust-in-Time Dependency InjectionOff-the-Shelf InjectionCurb your enthusiasmReviewing Our Progress
I'm a developer came from Java World & one of the questions I always ask when start write a program with Go Lang is "How to use Dependency Injection in Go Lang?" & This book completed answering my question. Beside of that, it provides much useful knowledge to "Never Stop Aiming for Better." I love the format of this book; each chapter always ends with some question to remind you, do you understand what the author wants to show you in this chapter. And this book shows how to apply DI in many ways based on design principles like SOLID.
But sometimes I find this book lengthy when describing ways to implement DI.
The book has a nice structure, every chapter begins and ends the same way, you know what to expect from the chapters. The author knows what he's talking about. I liked his efforts on code UX and his application of SOLID principles throughout the book. He doesn't dictate that you should use this or that approach. There's no silver bullet, so he explains advantages and disadvantages of each approach, so you can decide what approach you should adopt for your specific project. I enjoyed reading it, following and practicing the examples on my own.