How to Use Wire for Compile-Time Dependency Injection

You cannot use Wire for compile-time dependency injection in Go because Wire is a code generator that runs at build time, not a runtime library. Wire generates a wire_gen.go file containing the dependency graph logic, which the Go compiler then compiles into your binary. To use it, install the tool, define your provider and injector functions, and run the generator.

go install github.com/google/wire/cmd/wire@latest
wire

This command scans your wire.go file for //go:buildwire directives and generates the necessary wiring code.

Wire is a tool that writes your dependency injection code for you before you even run your program. Instead of manually connecting your services, you describe how they fit together, and Wire generates the Go code to link them. Think of it as an automated architect that drafts the blueprints for your application's connections so you don't have to.