Gorilla Mux Example v1

api.go

package main

import (
	"encoding/json"
	"log"
	"net/http"

	"github.com/gorilla/mux"
)

func main() {
	r := router()
	log.Fatal(http.ListenAndServe(":8080", r))
}

func router() *mux.Router {
	r := mux.NewRouter()

	api := r.PathPrefix("/api").Subrouter()

	api.HandleFunc("/version", handleGetVersion)

	return r
}

func handleGetVersion(w http.ResponseWriter, r *http.Request) {
	type getVersionResponse struct {
		Message string `json:"msg"`
	}

	response := getVersionResponse{Message: "Hello!"}

	JSON(w, response)
}

func JSON(w http.ResponseWriter, data interface{}) {
	enc := json.NewEncoder(w)
	err := enc.Encode(data)
	if err != nil {
		log.Println(err.Error())
		w.WriteHeader(http.StatusInternalServerError)
	}
}