di

Dependency Injection in Go

This is a simple RESTful API service. In the code, we are using dependency injection (DI) to load and initialize dependencies when starting the application.

3 ways to inject dependencies:

• No DI framework - Basic DI implemented using Go, no third-party DI framework.
• The Dig framework - Use the Dig framework to inject dependencies at runtime. See the example for details.
• The Wire framework - Use the Wire framework to generate the DI code at compile time. See [the example] (cmd/wire) for details.

Setup

1. Install the third party packages.

   $ make install

2. You can run of the following targets corresponding to a DI framework.

   $ make run-no-framework
   $ make run-dig
   $ make run-wire

3. On another shell.

   $ curl localhost:8000

Reference

• GoDoc: Dig
• Github: Dig
• Github: Wire
• Dependency Injection in Go
• Go Dependency Injection with Wire