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package main
import (
"bytes"
"errors"
"log"
"net/http"
"testing"
"time"
"github.com/emicklei/go-restful"
)
type User struct {
Id, Name string
}
type UserResource struct {
users map[string]User
}
func (u UserResource) Register(container *restful.Container) {
ws := new(restful.WebService)
ws.
Path("/users").
Consumes(restful.MIME_XML, restful.MIME_JSON).
Produces(restful.MIME_JSON, restful.MIME_XML)
ws.Route(ws.GET("/{user-id}").To(u.findUser))
ws.Route(ws.POST("").To(u.updateUser))
ws.Route(ws.PUT("/{user-id}").To(u.createUser))
ws.Route(ws.DELETE("/{user-id}").To(u.removeUser))
container.Add(ws)
}
// GET http://localhost:8090/users/1
//
func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
usr := u.users[id]
if len(usr.Id) == 0 {
response.AddHeader("Content-Type", "text/plain")
response.WriteErrorString(http.StatusNotFound, "User could not be found.")
} else {
response.WriteEntity(usr)
}
}
// POST http://localhost:8090/users
// <User><Id>1</Id><Name>Melissa Raspberry</Name></User>
//
func (u *UserResource) updateUser(request *restful.Request, response *restful.Response) {
usr := new(User)
err := request.ReadEntity(&usr)
if err == nil {
u.users[usr.Id] = *usr
response.WriteEntity(usr)
} else {
response.AddHeader("Content-Type", "text/plain")
response.WriteErrorString(http.StatusInternalServerError, err.Error())
}
}
// PUT http://localhost:8090/users/1
// <User><Id>1</Id><Name>Melissa</Name></User>
//
func (u *UserResource) createUser(request *restful.Request, response *restful.Response) {
usr := User{Id: request.PathParameter("user-id")}
err := request.ReadEntity(&usr)
if err == nil {
u.users[usr.Id] = usr
response.WriteHeader(http.StatusCreated)
response.WriteEntity(usr)
} else {
response.AddHeader("Content-Type", "text/plain")
response.WriteErrorString(http.StatusInternalServerError, err.Error())
}
}
// DELETE http://localhost:8090/users/1
//
func (u *UserResource) removeUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
delete(u.users, id)
}
func RunRestfulCurlyRouterServer() {
wsContainer := restful.NewContainer()
wsContainer.Router(restful.CurlyRouter{})
u := UserResource{map[string]User{}}
u.Register(wsContainer)
log.Print("start listening on localhost:8090")
server := &http.Server{Addr: ":8090", Handler: wsContainer}
log.Fatal(server.ListenAndServe())
}
func waitForServerUp(serverURL string) error {
for start := time.Now(); time.Since(start) < time.Minute; time.Sleep(5 * time.Second) {
_, err := http.Get(serverURL + "/")
if err == nil {
return nil
}
}
return errors.New("waiting for server timed out")
}
func TestServer(t *testing.T) {
serverURL := "http://localhost:8090"
go func() {
RunRestfulCurlyRouterServer()
}()
if err := waitForServerUp(serverURL); err != nil {
t.Errorf("%v", err)
}
// GET should give a 405
resp, err := http.Get(serverURL + "/users/")
if err != nil {
t.Errorf("unexpected error in GET /users/: %v", err)
}
if resp.StatusCode != http.StatusMethodNotAllowed {
t.Errorf("unexpected response: %v, expected: %v", resp.StatusCode, http.StatusOK)
}
// Send a POST request.
var jsonStr = []byte(`{"id":"1","name":"user1"}`)
req, err := http.NewRequest("POST", serverURL+"/users/", bytes.NewBuffer(jsonStr))
req.Header.Set("Content-Type", restful.MIME_JSON)
client := &http.Client{}
resp, err = client.Do(req)
if err != nil {
t.Errorf("unexpected error in sending req: %v", err)
}
if resp.StatusCode != http.StatusOK {
t.Errorf("unexpected response: %v, expected: %v", resp.StatusCode, http.StatusOK)
}
// Test that GET works.
resp, err = http.Get(serverURL + "/users/1")
if err != nil {
t.Errorf("unexpected error in GET /users/1: %v", err)
}
if resp.StatusCode != http.StatusOK {
t.Errorf("unexpected response: %v, expected: %v", resp.StatusCode, http.StatusOK)
}
}
|
