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75 lines
1.6 KiB
75 lines
1.6 KiB
package db
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import (
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"context"
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"fmt"
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_ "github.com/go-sql-driver/mysql"
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"github.com/go-xorm/xorm"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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"lapp_-wy/conf"
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"log"
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"sync"
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"time"
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)
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var (
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masterEngine *xorm.Engine
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Lock sync.Mutex
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mgoDb *mongo.Client
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mlock sync.Mutex
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)
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//链接到数据库
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func MasterEngine() *xorm.Engine {
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//判断masterEngine是否存在
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if masterEngine != nil {
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return masterEngine
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}
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//创建之前会涉及并发，所以要加锁
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Lock.Lock()
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defer Lock.Unlock()
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//细节，防止多个请求锁住
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if masterEngine != nil {
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return masterEngine
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}
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c := conf.MasterDbConfig
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driveSource := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8",
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c.User, c.Pwd, c.Host, c.Port, c.DbName)
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engine, err := xorm.NewEngine(conf.DriverName, driveSource)
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//开启sql，debug
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//engine.ShowSQL(true)
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if err != nil {
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log.Fatal("dbhelper.DbinstanceMaster error= ", err)
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return nil
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} else {
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masterEngine = engine
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return masterEngine
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}
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return masterEngine
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}
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//创建mongoDb数据库链接
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func MgoDb() *mongo.Client {
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//判断mgoDb是否存在
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if mgoDb != nil {
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return mgoDb
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}
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//创建之前会涉及并发，所以要加锁
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mlock.Lock()
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defer mlock.Unlock()
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//细节，防止多个请求锁住
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if mgoDb != nil {
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return mgoDb
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}
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//1.建立链接
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
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client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://localhost:27017"))
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if err != nil {
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log.Fatal("dbhelper.MgoDb error= ", err)
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return nil
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} else {
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mgoDb = client
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return mgoDb
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}
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}
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