/
db.go
101 lines (86 loc) · 2.45 KB
/
db.go
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package initial
import (
"database/sql"
"fmt"
"strings"
"time"
"github.com/astaxie/beego"
"github.com/astaxie/beego/orm"
"github.com/go-sql-driver/mysql"
_ "github.com/go-sql-driver/mysql"
"github.com/kubeservice-stack/basa/src/backend/database/initial"
"github.com/kubeservice-stack/basa/src/backend/util/logs"
)
const DbDriverName = "mysql"
func InitDb() {
orm.RegisterDriver(DbDriverName, orm.DRMySQL)
// ensure database exist
err := ensureDatabase()
if err != nil {
panic(err)
}
db, err := orm.GetDB()
if err != nil {
panic(err)
}
ttl := beego.AppConfig.DefaultInt("DBConnTTL", 30)
db.SetConnMaxLifetime(time.Duration(ttl) * time.Second)
orm.Debug = beego.AppConfig.DefaultBool("ShowSql", false)
}
func ensureDatabase() error {
needInit := false
dbName := beego.AppConfig.String("DBName")
dbURL := fmt.Sprintf("%s:%s@%s/", beego.AppConfig.String("DBUser"),
beego.AppConfig.String("DBPasswd"), beego.AppConfig.String("DBTns"))
db, err := sql.Open(DbDriverName, fmt.Sprintf("%s%s", dbURL, dbName))
if err != nil {
return err
}
defer db.Close()
err = db.Ping()
if err != nil {
switch e := err.(type) {
case *mysql.MySQLError:
// MySQL error unkonw database;
// refer https://dev.mysql.com/doc/refman/5.6/en/error-messages-server.html
if e.Number == 1049 {
needInit = true
dbForCreateDatabase, err := sql.Open(DbDriverName, addLocation(dbURL))
if err != nil {
return err
}
defer dbForCreateDatabase.Close()
_, err = dbForCreateDatabase.Exec(fmt.Sprintf("CREATE DATABASE %s CHARACTER SET utf8 COLLATE utf8_general_ci;", dbName))
if err != nil {
return err
}
} else {
return err
}
default:
return err
}
}
logs.Debug("Initialize database connection: %s", strings.Replace(dbURL, beego.AppConfig.String("DBPasswd"), "****", 1))
err = orm.RegisterDataBase("default", "mysql", addLocation(fmt.Sprintf("%s%s", dbURL, dbName)))
if err != nil {
return err
}
if needInit {
err = orm.RunSyncdb("default", false, true)
if err != nil {
return err
}
for _, insertSql := range initial.InitialData {
_, err = orm.NewOrm().Raw(insertSql).Exec()
if err != nil {
return err
}
}
}
return nil
}
func addLocation(dbURL string) string {
// https://stackoverflow.com/questions/30074492/what-is-the-difference-between-utf8mb4-and-utf8-charsets-in-mysql
return fmt.Sprintf("%s?charset=utf8mb4&loc=%s", dbURL, beego.AppConfig.DefaultString("DBLoc", "Asia%2FShanghai"))
}