func (s *Server) CreateStudent(w http.ResponseWriter, r *http.Request) {
// Unmarshal json into Student.
student := Student{}
err := json.NewDecoder(r.Body).Decode(&student)
if err != nil {
// Malformed json.
w.WriteHeader(http.StatusBadRequest)
log.Error(err)
return
}
log.Infof("%+v", student)
// Insert into db.
err = s.Collection().Insert(student)
if err != nil {
// Check for duplicates.
if mgo.IsDup(err) {
w.WriteHeader(http.StatusConflict)
} else {
// Something went wrong.
w.WriteHeader(http.StatusInternalServerError)
log.Error(err)
}
return
}
w.WriteHeader(http.StatusCreated)
}
func AddHost(h *Host) error {
conn, err := db.Conn()
if err != nil {
return err
}
defer conn.Close()
err = conn.InstallHosts().Insert(h)
if mgo.IsDup(err) {
return &ErrHostAlreadyExists{Name: h.Name}
}
return err
}
func (a *Article) Create() error {
if a == nil {
return apierror.NewServerError("article not instanced")
}
if a.Slug == "" {
a.Slug = slug.Make(a.Title)
}
if bson.IsObjectIdHex(a.Slug) {
return apierror.NewBadRequest("slug cannot be a ObjectId")
}
a.CreatedAt = time.Now()
// To prevent duplicates on the slug, we'll retry the insert() up to 10 times
originalSlug := a.Slug
var err error
for i := 0; i < 10; i++ {
a.ID = bson.NewObjectId()
err = Query().Insert(a)
if err != nil {
// In case of duplicate we'll add "-X" at the end of the slug, where X is
// a number
a.Slug = fmt.Sprintf("%s-%d", originalSlug, i)
if mgo.IsDup(err) == false {
return apierror.NewServerError(err.Error())
}
} else {
// everything went well
return nil
}
}
// after 10 try we just return an error
return apierror.NewConflict(err.Error())
}
func TestDocumentManager_Register_IndexAnnotation(t *testing.T) {
type Country struct {
ID bson.ObjectId `bson:"_id"`
Name string `bson:"Name" odm:"index(unique:true)"`
}
dm, done := getDocumentManager(t)
defer done()
err := dm.Register("Country", new(Country))
test.Fatal(t, err, nil)
country := &Country{Name: "Sweden"}
dm.Persist(country)
err = dm.Flush()
test.Fatal(t, err, nil)
country2 := new(Country)
err = dm.FindID(country.ID, country2)
test.Fatal(t, err, nil)
test.Fatal(t, country2.Name, country.Name)
country3 := &Country{Name: "Sweden"}
dm.Persist(country3)
err = dm.Flush()
test.Fatal(t, mgo.IsDup(err), true, "Error should be a duplicate key error ")
}
func main() {
session, err := mgo.DialWithTimeout("db", time.Minute)
if err != nil {
panic(err)
}
defer session.Close()
// Optional. Switch the session to a monotonic behavior
session.SetMode(mgo.Monotonic, true)
// Retrieve lines from STIF website.
c := session.DB("dispotrains").C("stations")
lines, err := client.GetAllLines()
if err != nil {
panic(err)
}
// Build the station database collection.
stations := make(map[string]*storage.Station)
for _, line := range lines {
for _, station := range line.GetStations() {
if _, ok := stations[strings.ToLower(station.Name)]; ok == true {
for _, sLine := range station.Lines {
stations[strings.ToLower(station.Name)].AttachLine(sLine)
}
} else {
stations[strings.ToLower(station.Name)] = station
}
}
}
AddPositionToStations(stations)
stationIndex := mgo.Index{
Key: []string{"name"},
Background: true,
DropDups: true,
Unique: true,
}
err = c.EnsureIndex(stationIndex)
if err != nil {
panic(err)
}
for _, station := range stations {
_, err = c.Upsert(bson.M{"name": station.Name}, &station)
if err != nil {
panic(err)
}
}
// Build the lines database collection.
job := &mgo.MapReduce{
Map: mapStationsToLines,
Reduce: reduceLines,
Out: bson.M{"replace": "lines"},
}
_, err = c.Find(bson.M{}).MapReduce(job, nil)
if err != nil {
panic(err)
}
// Append the new statuses to the database log.
c = session.DB("dispotrains").C("statuses")
index := mgo.Index{
Key: []string{"state", "lastupdate", "elevator"},
Background: true,
DropDups: true,
Sparse: true,
Unique: true,
}
err = c.EnsureIndex(index)
if err != nil {
panic(err)
}
for _, station := range stations {
for _, elevator := range station.GetElevators() {
bsonStatus := bson.M{
"state": elevator.Status.State,
"lastupdate": elevator.Status.LastUpdate,
"elevator": elevator.ID,
}
err = c.Insert(bsonStatus)
if err != nil && !mgo.IsDup(err) {
panic(err)
}
}
}
}