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Rest API in Golang
import (
"encoding/json"
"fmt"
"log"
"net/http"
"github.com/gorilla/mux"
"github.com/rs/xid"
)
// models
type Person struct {
ID string `json:"id,omitempty"`
Firstname string `json:"firstname,omitempty"`
Lastname string `json:"lastname,omitempty"`
Age int `json:"age,omitempty"`
Location `json:"location,omitempty"`
}
type Location struct {
Country string `json:"country,omitempty"`
City string `json:"city,omitempty"`
}
var people []Person
// handlers
func CreatePersonEndpoint(w http.ResponseWriter, r *http.Request) {
var person Person
_ = json.NewDecoder(r.Body).Decode(&person)
people = append(people, person)
json.NewEncoder(w).Encode(person)
}
func GetPeopleEndpoint(w http.ResponseWriter, r *http.Request) {
json.NewEncoder(w).Encode(people)
}
func GetPersonEndpoint(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
for _, p := range people {
if p.ID == params["id"] {
json.NewEncoder(w).Encode(p)
return
}
}
json.NewEncoder(w).Encode("Person Not Found")
}
func UpdatePersonEndpoint(w http.ResponseWriter, r *http.Request) {
var person Person
_ = json.NewDecoder(r.Body).Decode(&person)
params := mux.Vars(r)
for i, p := range people {
if p.ID == params["id"] {
people[i] = person
json.NewEncoder(w).Encode(person)
break
}
}
}
func DeletePersonEndpoint(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
for i, p := range people {
if p.ID == params["id"] {
copy(people[i:], people[i+1:])
people = people[:len(people)-1]
break
}
}
json.NewEncoder(w).Encode(people)
}
// routers
func main() {
router := mux.NewRouter()
people = append(people, Person{ID: xid.New().String(), Firstname: "Ruan", Lastname: "Bekker", Age: 32, Location: Location{Country: "South Africa", City: "Cape Town"}})
people = append(people, Person{ID: xid.New().String(), Firstname: "Donovan", Lastname: "Hack", Age: 36, Location: Location{Country: "South Africa", City: "Cape Town"}})
people = append(people, Person{ID: xid.New().String(), Firstname: "Stefan", Lastname: "Bester", Age: 32, Location: Location{Country: "South Africa", City: "Kroonstad"}})
people = append(people, Person{ID: xid.New().String(), Firstname: "Kevin", Lastname: "Adams", Age: 37, Location: Location{Country: "New Zealand", City: "Auckland"}})
people = append(people, Person{ID: xid.New().String(), Firstname: "James", Lastname: "Dean", Age: 44, Location: Location{Country: "America", City: "Manhattan"}})
router.HandleFunc("/people", GetPeopleEndpoint).Methods("GET")
router.HandleFunc("/people/{id}", GetPersonEndpoint).Methods("GET")
router.HandleFunc("/people", CreatePersonEndpoint).Methods("POST")
router.HandleFunc("/people/{id}", DeletePersonEndpoint).Methods("DELETE")
router.HandleFunc("/people/{id}", UpdatePersonEndpoint).Methods("PUT")
fmt.Println("Starting Server on Port 8000")
log.Fatal(http.ListenAndServe(":8000", router))
}
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