community_team/app/db/zhimeng_db.go

package db

import (
	"fmt"
	"os"

	_ "github.com/go-sql-driver/mysql"
	"xorm.io/xorm"
	"xorm.io/xorm/log"

	"applet/app/cfg"
)

var ZhimengDb *xorm.Engine

func InitZhimengDB(c *cfg.DBCfg) error {
	var err error
	if ZhimengDb, err = xorm.NewEngine("mysql", fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8mb4", c.User, c.Psw, c.Host, c.Name)); err != nil {
		return err
	}
	ZhimengDb.SetConnMaxLifetime(c.MaxLifetime)
	ZhimengDb.SetMaxOpenConns(c.MaxOpenConns)
	ZhimengDb.SetMaxIdleConns(c.MaxIdleConns)
	if err = Db.Ping(); err != nil {
		return err
	}
	if c.ShowLog {
		ZhimengDb.ShowSQL(true)
		ZhimengDb.Logger().SetLevel(0)
		f, err := os.OpenFile(c.Path, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0777)
		if err != nil {
			os.RemoveAll(c.Path)
			if f, err = os.OpenFile(c.Path, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0777); err != nil {
				return err
			}
		}
		logger := log.NewSimpleLogger(f)
		logger.ShowSQL(true)
		ZhimengDb.SetLogger(logger)
	}
	return nil
}