这是我如何看待自己和其他人在Go中构建Web应用程序的示例。此代码未经测试，仅作为示例。它缺少导入，并且可能有错误。
main.go
package main
func main() {
mongoDBDialInfo := &mgo.DialInfo{
Addrs: []string{config.DatabaseURL},
Timeout: 60 * time.Second,
Database: config.DatabaseName,
Username: config.DatabaseUsername,
Password: config.DatabasePassword,
}
db, err := mgo.DialWithInfo(mongoDBDialInfo)
if err != nil {
log.Fatal("Cannot Dial Mongo: ", err)
}
defer db.Close()
db.SetMode(mgo.Monotonic, true)
phoneIndex := mgo.Index{
Key: []string{"pp"},
Unique: true,
DropDups: true,
Background: true,
Sparse: true,
}
err = db.DB(config.DatabaseName).C("users").EnsureIndex(phoneIndex)
if err != nil {
panic(err)
}
mgoAdapter := mongo.NewAdapter(db, config.DatabaseName)
deviceStore := mongo.NewDeviceStore(mgoAdapter)
userStore := mongo.NewUserStore(mgoAdapter)
loginController := controllers.NewLoginController(deviceStore)
router := mux.NewRouter()
router.HandleFunc("/login", middleware.AuthorizeUser(userStore)(http.HandlerFunc(loginController.Login)).Methods("POST")
if err := http.ListenAndServe(":5000", router); err != nil {
log.Fatal(err)
}
}
控制器/login.go
package controllers
type LoginController struct {
store DeviceStore
}
func NewLoginController(store stores.DeviceStore) *LoginController {
return &LoginController{
store: store,
}
}
func (c *LoginController) Login(w http.ResponseWriter, r *http.Request) {
r.ParseForm() // Parses the request body
device := r.Form.Get("device")
data, err := c.store.FindByDevice(device)
var respose models.Response
if err != nil {
w.WriteHeader(500)
response = models.Response{Status: 500, Message: fmt.Sprintf("error: %s", err)}
} else if data == nil {
w.WriteHeader(404)
response = models.Response{Status: 404, Message: "device not found"}
} else {
response = models.Response{Status: 200, Message: "device found", Data: data}
}
// Write sets header to 200 if it hasn't been set already
w.Write([]byte(utils.ResponseToString(response)))
}
store / stores.go
package stores
type DeviceStore interface {
FindByDevice(device string) (*models.Device, error)
}
type UserStore interface {
FindByToken(token string) (*models.User, error)
}
中间件/auth.go
package middleware
func AuthorizeUser(store stores.UserStore) func(h *http.Handler) http.Handler {
return func(h *http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Logic for authorizing user
// Could also store user in the request context
})
}
}
mongo / mongo.go
package mongo
type Adapter struct {
session *mgo.Session
databaseName string
}
func NewAdapter(session *mgo.Session, dbName string) *Adapter {
return &Adapter{session: session, databaseName: dbName}
}
type deviceStore struct {
*Adapter
}
func NewDeviceStore(adapter *Adapter) stores.DeviceStore {
return &deviceStore{adapter}
}
const devices = "devices"
func (s *deviceStore) FindByDevice(d string) (*models.Device, err) {
sess := s.session.copy()
defer sess.close()
var deviceid bson.ObjectId
if bson.IsObjectIdHex(d) {
deviceid = bson.ObjectIdHex(d)
}
var device models.Device
err := db.DB(s.databaseName).C(devices).FindId(deviceid).One(&device)
if err == mgo.ErrNotFound {
return nil, nil
}
return &device, err
}
type userStore struct {
*Adapter
}
const users = "users"
func NewUserStore(adapter *Adapter) stores.UserStore {
return &userStore{adapter}
}
func (s *userStore) GetUserByToken(token string) (*models.User, error) {
sess := s.session.copy()
defer sess.close()
var user models.User
err := db.DB(s.databaseName).C(users).Find(bson.M{"token": token}).One(&user)
if err == mgo.ErrNotFound {
return nil, nil
}
return &user, err
}
602392714
清零编程群