Composition Root
Explore how to construct and wire application components using the composition root pattern in Golang. Understand dependency injection, building application object graphs, and integrating modules with tools like Google Wire and Dig. This lesson helps you grasp synchronous communication with gRPC and protocol buffers, ensuring modular design without cyclic dependencies.
We'll cover the following...
The internal design of each module may differ, but they all use the same pattern to start up. A composition root is part of an application where we bring the infrastructure, configuration, and application components together:
The composition root is also where dependency injection takes place, and an application object graph will be constructed. For our modules, we will undertake the following actions:
Construct the Driven adapters.
Construct the application and inject the Driven adapters.
Construct the Driver adapters and inject the application and Driven adapters.
This snippet from the ...