func Restore()

in pitr/agent/internal/handler/restore.go [32:102]
56 lines of code
12 McCabe index (conditional complexity)

func Restore(ctx *fiber.Ctx) (err error) {
	in := &view.RestoreIn{}

	if err = ctx.BodyParser(in); err != nil {
		err = fmt.Errorf("body parse err=%s,wrap=%w", err, cons.BodyParseFailed)
		return
	}

	if err = in.Validate(); err != nil {
		err = fmt.Errorf("invalid parameter,err=%w", err)
		return
	}

	if err = pkg.OG.Auth(in.Username, in.Password, in.DBName, in.DBPort); err != nil {
		efmt := "pkg.OG.Auth failure[un=%s,pw.len=%d,db=%s],err=%w"
		err = fmt.Errorf(efmt, in.Username, len(in.Password), in.DBName, err)
		return
	}

	// stop openGauss
	if err = pkg.OG.Stop(); err != nil {
		err = fmt.Errorf("stop openGauss failure,err=%w", err)
		return
	}

	defer func() {
		if err != nil {
			err2 := pkg.OG.Start()
			if err2 != nil {
				err = fmt.Errorf("pkg.OG.Start() return err=%s,wrap=%w", err2, err)
				return
			}
		}
	}()

	// move pgdata to temp
	if err = pkg.OG.MvPgDataToTemp(); err != nil {
		err = fmt.Errorf("pkg.OG.MvPgDataToTemp return err=%w", err)
		return
	}

	var status = "restoring"
	defer func() {
		if status != "restore success" {
			err2 := pkg.OG.MvTempToPgData()
			err = fmt.Errorf("resotre failre[err=%s],pkg.OG.MvTempToPgData return err=%w", err, err2)
		}
	}()

	// restore data from backup
	if err = pkg.OG.Restore(in.DnBackupPath, in.Instance, in.DnBackupID); err != nil {
		efmt := "pkg.OG.Restore failure[path=%s,instance=%s,backupID=%s],err=%w"
		err = fmt.Errorf(efmt, in.DnBackupPath, in.Instance, in.DnBackupID, err)
		status = "restore failure"
		return
	}
	status = "restore success"

	// clean temp
	if err = pkg.OG.CleanPgDataTemp(); err != nil {
		err = fmt.Errorf("pkg.OG.CleanPgDataTemp return err=%w", err)
		return
	}

	if err = pkg.OG.Start(); err != nil {
		err = fmt.Errorf("pkg.OG.Start return err=%w", err)
		return
	}

	return responder.Success(ctx, nil)
}