1. Install the github.com/gorilla/mux and github.com/gorilla/handlers packages using the go get command, as follows:

$ go get github.com/gorilla/mux
$ go get github.com/gorilla/handlers

2. Create http-rest-api.go, where we will define three routes—/status, /get-token and /employees—along with their handlers, as follows:

package main
import 
(
  "encoding/json"
  "log"
  "net/http"
  "os"
  "github.com/gorilla/handlers"
  "github.com/gorilla/mux"
)
const 
(
  CONN_HOST = "localhost"
  CONN_PORT = "8080"
)
type Employee struct 
{
  Id int `json:"id"`
  FirstName string `json:"firstName"`
  LastName string `json:"lastName"`
}
type Employees []Employee
var employees []Employee
func init() 
{
  employees = Employees
  {
    Employee{Id: 1, FirstName: "Foo", LastName: "Bar"},
    Employee{Id: 2, FirstName: "Baz", LastName: "Qux"},
  }
}
func getStatus(w http.ResponseWriter, r *http.Request) 
{
  w.Write([]byte("API is up and running"))
}
func getEmployees(w http.ResponseWriter, r *http.Request) 
{
  json.NewEncoder(w).Encode(employees)
}
func getToken(w http.ResponseWriter, r *http.Request) 
{ 
  w.Write([]byte("Not Implemented"))
}
func main() 
{
  router := mux.NewRouter().StrictSlash(true)
  router.HandleFunc("/status", getStatus).Methods("GET")
  router.HandleFunc("/get-token", getToken).Methods("GET")
  router.HandleFunc("/employees", getEmployees).Methods("GET")
  err := http.ListenAndServe(CONN_HOST+":"+CONN_PORT,
  handlers.LoggingHandler(os.Stdout, router))
  if err != nil 
  {
    log.Fatal("error starting http server : ", err)
    return
  }
}

3. Run the program with the following command:

$ go run http-rest-api.go