jjl-tools/tinodeService/lib/db.go

package lib

import (
	. "gitdxz.51daxuetong.cn/go_dev/jjl-tools/tinodeService/config"
	"github.com/jinzhu/gorm"
	_ "github.com/jinzhu/gorm/dialects/mysql"
	"log"
	"sync"
)

var dblock *sync.Mutex = &sync.Mutex{}

var tiDbClient *gorm.DB
var esOnce sync.Once

//GetTiNodeDbInstance 数据库连接实例
func GetTiNodeDbInstance() *gorm.DB {
	var err error
	esOnce.Do(func() {
		config := GlobalConfig
		tiDbClient, err = gorm.Open("mysql", config.DbConnect)
		if err != nil {
			log.Panic(err.Error())
		}
		//设置闲置的连接数
		tiDbClient.DB().SetMaxIdleConns(10)
		//设置最大打开的连接数，默认值为0表示不限制
		tiDbClient.DB().SetMaxOpenConns(100)
		//如果设置为true,`User`的默认表名为`user`,使用`TableName`设置的表名不受影响
		tiDbClient.SingularTable(true)
	})
	return tiDbClient
}

func ColumnIncr(column string) interface{} {
	return gorm.Expr(column+" + ?", 1)
}