# 4.5 调用MongoDB

# 4.5.1 简介

store/mongox 包是对 go.mongodb.org/mongo-driver/mongo 进行二次封装。

# 4.5.2 配置规范

配置说明 (opens new window)

# 4.5.3 用法

访问mongo示例 (opens new window)

// run: go run main.go --config=config.toml

package main

import (
    "context"
    "fmt"
    "log"
    "time"

    "github.com/douyu/jupiter"
    "github.com/douyu/jupiter/pkg/store/mongox"
    "github.com/douyu/jupiter/pkg/xlog"
    "go.mongodb.org/mongo-driver/mongo"
    "gopkg.in/mgo.v2/bson"
)

// run: go run main.go -config=config.toml
type Engine struct {
    jupiter.Application
}

func NewEngine() *Engine {
    eng := &Engine{}
    if err := eng.Startup(
        eng.exampleMongo,
    ); err != nil {
        xlog.Panic("startup", xlog.Any("err", err))
    }
    return eng
}

func main() {
    app := NewEngine()
    if err := app.Run(); err != nil {
        panic(err)
    }
}

func (eng *Engine) exampleMongo() (err error) {
    client := mongox.StdConfig("test").Build()

    write(client)
    read(client)

    return
}

func write(client *mongo.Client) {
    collection := client.Database("test").Collection("test")

    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
    defer cancel()

    _, err := collection.InsertOne(ctx, bson.M{"rid": 888, "dateline": time.Now().Unix()})
    if err != nil {
        panic(err)
    }
}

func read(client *mongo.Client) {

    collection := client.Database("test").Collection("test")

    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
    defer cancel()

    cur, err := collection.Find(ctx, bson.M{"rid": 888})
    if err != nil {
        log.Fatal(err)
    }
    defer cur.Close(ctx)
    for cur.Next(ctx) {
        var result bson.M
        err := cur.Decode(&result)
        if err != nil {
            xlog.Fatal("exampleMongo", xlog.Any("err", err.Error()))
        }
        fmt.Println("result...", result)

        // do something with result....
    }
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

执行 go run main.go --config=config.toml,可以看到如下图结果 image