相关疑难解决方法(0)

我的数据层使用了相当数量的Mongo聚合,平均而言,查询需要500-650毫秒才能返回.我在用mgo.

下面显示了一个示例查询函数,它表示我的大多数查询的外观.

func (r userRepo) GetUserByID(id string) (User, error) {
    info, err := db.Info()
    if err != nil {
        log.Fatal(err)
    }

    session, err := mgo.Dial(info.ConnectionString())
    if err != nil {
        log.Fatal(err)
    }
    defer session.Close()

    var user User
    c := session.DB(info.Db()).C("users")
    o1 := bson.M{"$match": bson.M{"_id": id}}
    o2 := bson.M{"$project": bson.M{
        "first":           "$first",
        "last":            "$last",
        "email":           "$email",
        "fb_id":           "$fb_id",
        "groups":          "$groups",
        "fulfillments":    "$fulfillments",
        "denied_requests": "$denied_requests",
        "invites":         "$invites",
        "requests": bson.M{
            "$filter": bson.M{
                "input": "$requests",
                "as":    "item",
                "cond": bson.M{
                    "$eq": []interface{}{"$$item.active", true}, …

package main

import (
    "encoding/json"
    "gorilla/mux"
    "log"
    "net/http"
    "database/sql"
    _ "go-sql-driver/mysql"
    )

func GetPeople(w http.ResponseWriter, r *http.Request, db *sql.DB) {
    json.NewEncoder(w).Encode(db.QueryRow("SELECT * from test.animal"))
}

func main() {

db, err := sql.Open("mysql", "root:mariadb@tcp(127.0.0.1:3306)/test")
if err != nil {
    panic(err.Error())
}
defer db.Close()
router := mux.NewRouter()

router.HandleFunc("/people", GetPeople).Methods("GET")

log.Fatal(http.ListenAndServe(":8000", router))
}

我需要在 GetPeople 函数中识别我的 db，但是给函数一个第三个参数 (db *sql.DB) 是不可能的。

我该如何解决？谢谢