Popularity
6.5
Growing
Activity
9.1
Growing
418
6
46

Programming language: Go
License: Apache License 2.0
Latest version: v0.8.1

qmgo alternatives and similar packages

Based on the "NoSQL Databases" category.
Alternatively, view qmgo alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of qmgo or a related project?

Add another 'NoSQL Databases' Package

README

Qmgo

Build Status Coverage Status Go Report Card GitHub release GoDoc Join the chat at https://gitter.im/qiniu/qmgo

English | [简体中文](README_ZH.md)

Qmgo is a Go driver for MongoDB . It is based on MongoDB official driver, but easier to use like mgo (such as the chain call).

  • Qmgo allow user to use the new features of MongoDB in a more elegant way.

  • Qmgo is the first choice for migrating from mgo to the new MongoDB driver with minimal code changes.

Requirements

-Go 1.10 and above.

-MongoDB 2.6 and above.

Features

  • CRUD to documents
  • Sort、limit、count、select、distinct
  • Transactions
  • Hooks
  • Automatically update default and custom fields
  • Predefine operator keys
  • Aggregate、indexes operation、cursor
  • All options when create connection and CRUD

Installation

  • Use go mod to automatically install dependencies by import github.com/qiniu/qmgo

Or

  • Use go get github.com/qiniu/qmgo

Usage

  • Start

import and create a new connection

import (
    "context"

    "github.com/qiniu/qmgo"
)

ctx := context.Background()
client, err := qmgo.NewClient(ctx, &qmgo.Config{Uri: "mongodb://localhost:27017"})
db := client.Database("class")
coll := db.Collection("user")

If your connection points to a fixed database and collection, recommend using the following way to initialize the connection. All operations can be based on cli:

cli, err := qmgo.Open(ctx, &qmgo.Config{Uri: "mongodb://localhost:27017", Database: "class", Coll: "user"})

The following examples will be based on cli, if you use the first way for initialization, replace cli with clientdb or coll

Make sure to defer a call to Disconnect after instantiating your client:

defer func() {
if err = cli.Close(ctx); err != nil {
        panic(err)
    }
}()
  • Create index

Before doing the operation, we first initialize some data:

type UserInfo struct {
    Name   string `bson:"name"`
    Age    uint16 `bson:"age"`
    Weight uint32 `bson:"weight"`
}

var userInfo = UserInfo{
    Name: "xm",
    Age: 7,
    Weight: 40,
}

Create index

cli.CreateOneIndex(context.Background(), options.IndexModel{Key: []string{"name"}, Unique: true})
cli.CreateIndexes(context.Background(), []options.IndexModel{{Key: []string{"id2", "id3"}}})
  • Insert a document
// insert one document
result, err := cli.Insert(ctx, userInfo)
  • Find a document
// find one document
  one := UserInfo{}
  err = cli.Find(ctx, bson.M{"name": userInfo.Name}).One(&one)
  • Delete documents
err = cli.Remove(ctx, bson.M{"age": 7})
  • Insert multiple data
// multiple insert
var userInfos = []UserInfo{
    UserInfo{Name: "a1", Age: 6, Weight: 20},
    UserInfo{Name: "b2", Age: 6, Weight: 25},
    UserInfo{Name: "c3", Age: 6, Weight: 30},
    UserInfo{Name: "d4", Age: 6, Weight: 35},
    UserInfo{Name: "a1", Age: 7, Weight: 40},
    UserInfo{Name: "a1", Age: 8, Weight: 45},
}
result, err = cli.Collection.InsertMany(ctx, userInfos)
  • Search all, sort and limit go // find all, sort and limit batch := []UserInfo{} cli.Find(ctx, bson.M{"age": 6}).Sort("weight").Limit(7).All(&batch)
  • Count

    count, err := cli.Find(ctx, bson.M{"age": 6}).Count()
    
  • Update

    // UpdateOne one
    err := cli.UpdateOne(ctx, bson.M{"name": "d4"}, bson.M{"$set": bson.M{"age": 7}})
    

// UpdateAll result, err := cli.UpdateAll(ctx, bson.M{"age": 6}, bson.M{"$set": bson.M{"age": 10}})


- Select
````go
err := cli.Find(ctx, bson.M{"age": 10}).Select(bson.M{"age": 1}).One(&one)
  • Aggregate

    matchStage := bson.D{{"$match", []bson.E{{"weight", bson.D{{"$gt", 30}}}}}}
    groupStage := bson.D{{"$group", bson.D{{"_id", "$name"}, {"total", bson.D{{"$sum", "$age"}}}}}}
    var showsWithInfo []bson.M
    err = cli.Aggregate(context.Background(), Pipeline{matchStage, groupStage}).All(&showsWithInfo)
    
  • Support All mongoDB Options when create connection

poolMonitor := &event.PoolMonitor{
    Event: func(evt *event.PoolEvent) {
        switch evt.Type {
        case event.GetSucceeded:
            fmt.Println("GetSucceeded")
        case event.ConnectionReturned:
            fmt.Println("ConnectionReturned")
        }
    },
}
opt := options.Client().SetPoolMonitor(poolMonitor)  // more options use the chain options.
cli, err := Open(ctx, &Config{Uri: URI, Database: DATABASE, Coll: COLL}, opt) 


  • Transactions

The super simple and powerful transaction, with features like timeoutretry:

callback := func(sessCtx context.Context) (interface{}, error) {
    // Important: make sure the sessCtx used in every operation in the whole transaction
    if _, err := cli.InsertOne(sessCtx, bson.D{{"abc", int32(1)}}); err != nil {
        return nil, err
    }
    if _, err := cli.InsertOne(sessCtx, bson.D{{"xyz", int32(999)}}); err != nil {
        return nil, err
    }
    return nil, nil
}
result, err = cli.DoTransaction(ctx, callback)

More about transaction

  • Predefine operator keys

    // aggregate
    matchStage := bson.D{{operator.Match, []bson.E{{"weight", bson.D{{operator.Gt, 30}}}}}}
    groupStage := bson.D{{operator.Group, bson.D{{"_id", "$name"}, {"total", bson.D{{operator.Sum, "$age"}}}}}}
    var showsWithInfo []bson.M
    err = cli.Aggregate(context.Background(), Pipeline{matchStage, groupStage}).All(&showsWithInfo)
    
  • Hooks

Qmgo flexible hooks:

type User struct {
    Name         string    `bson:"name"`
    Age          int       `bson:"age"`
}
func (u *User) BeforeInsert() error {
    fmt.Println("before insert called")
    return nil
}
func (u *User) AfterInsert() error {
    fmt.Println("after insert called")
    return nil
}

u := &User{Name: "Alice", Age: 7}
_, err := cli.InsertOne(context.Background(), u)

More about hooks

  • Automatically update fields

    Qmgo support two ways to make specific fields automatically update in specific API

    • Default fields

    Inject field.DefaultField in document struct, Qmgo will update createAtupdateAt and _id in update and insert operation.

    type User struct {
      field.DefaultField `bson:",inline"`
    
      Name string `bson:"name"`
      Age  int    `bson:"age"`
    }
    
    u := &User{Name: "Lucas", Age: 7}
    _, err := cli.InsertOne(context.Background(), u)
    // Fields with tag createAt、updateAt and _id will be generated automatically 
    
    • Custom fields

    Define the custom fields, Qmgo will update them in update and insert operation.

    type User struct {
        Name string `bson:"name"`
        Age  int    `bson:"age"`
    
        MyId         string    `bson:"myId"`
        CreateTimeAt time.Time `bson:"createTimeAt"`
        UpdateTimeAt int64     `bson:"updateTimeAt"`
    }
    // Define the custom fields
    func (u *User) CustomFields() field.CustomFieldsBuilder {
        return field.NewCustom().SetCreateAt("CreateTimeAt").SetUpdateAt("UpdateTimeAt").SetId("MyId")
    }
    
    u := &User{Name: "Lucas", Age: 7}
    _, err := cli.InsertOne(context.Background(), u)
    // CreateTimeAt、UpdateTimeAt and MyId will be generated automatically 
    
    // suppose Id and ui is ready
    err = cli.ReplaceOne(context.Background(), bson.M{"_id": Id}, &ui)
    // UpdateTimeAt will update
    

Check examples here

More about automatically fields

Qmgo vs go.mongodb.org/mongo-driver

Below we give an example of multi-file search、sort and limit to illustrate the similarities between qmgo and mgo and the improvement compare to go.mongodb.org/mongo-driver. How do we do ingo.mongodb.org/mongo-driver:

// go.mongodb.org/mongo-driver
// find all, sort and limit
findOptions := options.Find()
findOptions.SetLimit(7) // set limit
var sorts D
sorts = append(sorts, E{Key: "weight", Value: 1})
findOptions.SetSort(sorts) // set sort

batch := []UserInfo{}
cur, err := coll.Find(ctx, bson.M{"age": 6}, findOptions)
cur.All(ctx, &batch)

How do we do in Qmgo and mgo:

// qmgo
// find all, sort and limit
batch := []UserInfo{}
cli.Find(ctx, bson.M{"age": 6}).Sort("weight").Limit(7).All(&batch)

// mgo
// find all, sort and limit
coll.Find(bson.M{"age": 6}).Sort("weight").Limit(7).All(&batch)

Qmgo vs mgo

Differences between qmgo and mgo

Contributing

The Qmgo project welcomes all contributors. We appreciate your help!

Communication:

avatar