Go HTTP Server with Gorilla Mux

1package main
2 
3import (
4	"encoding/json"
5	"log"
6	"net/http"
7 
8	"github.com/gorilla/mux"
9)
10 
11type User struct {
12	ID   string `json:"id"`
13	Name string `json:"name"`
14}
15 
16var users []User
17 
18func getUsers(w http.ResponseWriter, r *http.Request) {
19	w.Header().Set("Content-Type", "application/json")
20	json.NewEncoder(w).Encode(users)
21}
22 
23func getUser(w http.ResponseWriter, r *http.Request) {
24	params := mux.Vars(r)
25	for _, user := range users {
26		if user.ID == params["id"] {
27			json.NewEncoder(w).Encode(user)
28			return
29		}
30	}
31	http.NotFound(w, r)
32}
33 
34func main() {
35	r := mux.NewRouter()
36	r.HandleFunc("/users", getUsers).Methods("GET")
37	r.HandleFunc("/users/{id}", getUser).Methods("GET")
38	log.Fatal(http.ListenAndServe(":8080", r))
39}