Register Golang gorilla/mux routes in external package

In my API I'm going to have a lot of completely separate handlers for each path like "/api/v1/handler_one" and "/api/v1/handler_two". I'm trying to put every handler in it's own package to make it easier to maintain.

I added an example. It's not working since it's not even loading "handlers/handler_one.go". What am I missing?

main.go

package main

import (
	"net/http"
	"git/myapp/router"
)

func main() {

  myRouter := router.APIRouter

	srv := &http.Server{
		Handler: myRouter,
		Addr:    "0.0.0.0:8080",
	}

	log.Fatal(srv.ListenAndServe())
}

router/router.go

package router

import (
	"github.com/gorilla/mux"
)

var Router = mux.NewRouter().StrictSlash(true)
var APIRouter = Router.PathPrefix("/api/v1").Subrouter()

handlers/handler_one.go

package handler_one

import (
	"git/myapp/router"
)

type Route struct {
	Name        string
	Method      string
	Pattern     string
	HandlerFunc http.HandlerFunc
}

type APIRoutes []Route

var apiRoutes = APIRoutes{
	Route{ "OneIndex", "GET", "/one", OneIndex, },
}

func init() {
	// Register routes
	for _, route := range apiRoutes {
		var handler http.Handler

		handler = route.HandlerFunc
		handler = Logger(handler, route.Name)

		router.APIRouter.
			Methods(route.Method).Path(route.Pattern).Name(route.Name).Handler(handler)
	}
}

// OneIndex is handling the requests to /api/v1/one
func OneIndex(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
	w.WriteHeader(http.StatusOK)
  
  fmt.Println("Doing something...")
}

> It's not working since it's not even loading "handlers/handler_one.go"

Do you mean that the init function in handlers/handler_one.go is not being executed?

That would be expected since in the code you pasted you are not importing that package anywhere.

Try importing that package in your main.go.

You can import as _ if the only reason for importing it would be for the init function to run.