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tools.go
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tools.go
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package database
import (
"database/sql"
"time"
//init database
"github.com/Casxt/TimeLine/config"
_ "github.com/go-sql-driver/mysql"
)
//DataBase is global database var
var DataBase *sql.DB
//Open using a sql.Open to open database
func Open() error {
DataBase, _ = sql.Open("mysql", config.Sql.GenerateDSN())
DataBase.SetConnMaxLifetime(time.Second * 60)
DataBase.SetMaxOpenConns(100)
DataBase.SetMaxIdleConns(50)
err := DataBase.Ping()
return err
}
//Close database
func Close() error {
err := DataBase.Close()
return err
}
//Begin Automatic call DB.Begin to begin a course
func Begin(course *sql.Tx) (*sql.Tx, bool, error) {
if course == nil {
course, err := DataBase.Begin()
return course, true, err
}
return course, false, nil
}
//Commit Automatic call DB.Commit to Commit a course
func Commit(course *sql.Tx, selfCourse bool) error {
if selfCourse == true {
err := course.Commit()
return err
}
return nil
}
//Rollback Automatic call DB.Rollback to Commit a Rollback
func Rollback(course *sql.Tx, selfCourse bool) error {
if selfCourse == true {
err := course.Rollback()
return err
}
return nil
}
//GraceCommit will automitic commit or rollback
func GraceCommit(course *sql.Tx, selfCourse bool, err error) error {
if err != nil {
return Rollback(course, selfCourse)
}
return Commit(course, selfCourse)
}