How to use Increment method of mgo Package

Best Keploy code snippet using mgo.Increment

static_validator_month.go

Source:static_validator_month.go

...21	Date                  string        `bson:"date"`22	CaculateDate          string        `bson:"caculate_date"`23	TerminalCommission    Coin          `bson:"terminal_commission"`24	PeriodCommission      Coin          `bson:"period_commission"`25	IncrementCommission   Coin          `bson:"increment_commission"`26	TerminalDelegation    string        `bson:"terminal_delegation"`27	IncrementDelegation   string        `bson:"increment_delegation"`28	Tokens                  string        `bson:"tokens"` //æéæåç¨29	TerminalDelegatorN      int           `bson:"terminal_delegator_n"`30	IncrementDelegatorN     int           `bson:"increment_delegator_n"`31	TerminalSelfBond        string        `bson:"terminal_self_bond"`32	IncrementSelfBond       string        `bson:"increment_self_bond"`33	CommissionRateMax       string        `bson:"commission_rate_max"`34	CommissionRateMin       string        `bson:"commission_rate_min"`35	FoundationDelegateT     string        `bson:"foundation_delegate_t"`36	FoundationDelegateIncre string        `bson:"foundation_delegate_incre"`37	Moniker                 string        `bson:"moniker"`38	CreateAt                int64         `bson:"create_at"`39	UpdateAt                int64         `bson:"update_at"`40}41func (d ExStaticValidatorMonth) Name() string {42	return CollectionNameExStaticValidatorMonth43}44func (d ExStaticValidatorMonth) PkKvPair() map[string]interface{} {45	return bson.M{ExStaticValidatorMonthAddressTag: d.Address, ExStaticValidatorMonthDateTag: d.Date}46}...

user.go

Source:user.go

...3	"github.com/muitsfriday/go-ms-demo/api-user/consumers"4	"gopkg.in/mgo.v2"5	"gopkg.in/mgo.v2/bson"6)7// autoIncrement is user id increment counter8type autoIncrement struct {9	ID int `bson:"counter"`10}11// UserRepositoryMongoDB implement UserRepository12type UserRepositoryMongoDB struct {13	userCollection *mgo.Collection14	incrCollection *mgo.Collection15}16// New factory function17func New(userCollection *mgo.Collection, incrCollection *mgo.Collection) consumers.UserRepository {18	return &UserRepositoryMongoDB{userCollection, incrCollection}19}20// GetUser given id21func (r *UserRepositoryMongoDB) GetUser(id int) consumers.User {22	var user consumers.User23	r.userCollection.Find(bson.M{"id": id}).One(&user)24	return user25}26// CreateUser create new user given user scheme27func (r *UserRepositoryMongoDB) CreateUser(u consumers.User) (int, error) {28	if u.ID == 0 {29		if id, err := r.getAutoIncrementID(); err != nil {30			return 0, err31		} else {32			u.ID = id33		}34	}35	if err := r.userCollection.Insert(&u); err != nil {36		return 0, err37	}38	return u.ID, nil39}40// UpdateUser update user info given user'id41func (r *UserRepositoryMongoDB) UpdateUser(id int, u consumers.User) bool {42	return false43}44// DeleteUser delete user by id45func (r *UserRepositoryMongoDB) DeleteUser(id int) bool {46	return false47}48// ListUser list all users49func (r *UserRepositoryMongoDB) ListUser() []consumers.User {50	var list []consumers.User51	err := r.userCollection.Find(nil).All(&list)52	if err != nil {53		return list54	}55	return list56}57// GetUserByEmail get user given email58func (r *UserRepositoryMongoDB) GetUserByEmail(email string) (consumers.User, error) {59	var u consumers.User60	err := r.userCollection.Find(bson.M{"email": email}).One(&u)61	if err != nil {62		return u, err63	}64	return u, nil65}66// getAutoIncrementID get next id for user record.67func (r *UserRepositoryMongoDB) getAutoIncrementID() (int, error) {68	change := mgo.Change{69		Update:    bson.M{"$inc": bson.M{"counter": 1}},70		ReturnNew: true,71		Upsert:    true,72	}73	var i autoIncrement74	_, err := r.incrCollection.Find(nil).Apply(change, &i)75	if err != nil {76		return 0, err77	}78	return i.ID, nil79}...

article.go

Source:article.go

...31}32// CreateArticle create article33func (r *MongoArticleRepository) CreateArticle(a consumers.Article) (int, error) {34	if a.ID == 0 {35		id, err := r.getAutoIncrementID()36		if err != nil {37			panic(err)38		}39		a.ID = id40	}41	a.CreatedAt = time.Now().Unix()42	a.UpdatedAt = time.Now().Unix()43	if err := r.articleCollection.Insert(&a); err != nil {44		return 0, err45	}46	return a.ID, nil47}48// UpdateArticle update article49func (r *MongoArticleRepository) UpdateArticle(id int, a consumers.Article) bool {50	return false51}52// DeleteArticle delete article53func (r *MongoArticleRepository) DeleteArticle(id int) bool {54	return false55}56// increments is user id increment counter57type autoIncrement struct {58	ID int `bson:"counter"`59}60// getAutoIncrementID get next id for user record.61func (r *MongoArticleRepository) getAutoIncrementID() (int, error) {62	change := mgo.Change{63		Update:    bson.M{"$inc": bson.M{"counter": 1}},64		ReturnNew: true,65		Upsert:    true,66	}67	var i autoIncrement68	_, err := r.incrCollection.Find(nil).Apply(change, &i)69	if err != nil {70		return 0, err71	}72	return i.ID, nil73}...

Increment

Using AI Code Generation

1import (2func main() {3	session, err := mgo.Dial("localhost")4	if err != nil {5		panic(err)6	}7	defer session.Close()8	session.SetMode(mgo.Monotonic, true)9	c := session.DB("test").C("test")10	err = c.Find(bson.M{"name": "foo"}).One(&result)11	if err != nil {12		panic(err)13	}14	fmt.Println("Initial value:", result["value"])15	err = c.Update(bson.M{"name": "foo"}, bson.M{"$inc": bson.M{"value": 1}})16	if err != nil {17		panic(err)18	}19	err = c.Find(bson.M{"name": "foo"}).One(&result)20	if err != nil {21		panic(err)22	}23	fmt.Println("New value:", result["value"])24}

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