Function DumpDBModel

go/model/model.go:275–290

DumpDBModel dumps a model tarball from database to local file system and return the file name

(db *database.DB, table, cwd string)

// DumpDBModel dumps a model tarball from database to local
// file system and return the file name
func DumpDBModel(db *database.DB, table, cwd string) (string, error) {
	sqlf, err := sqlfs.Open(db.DB, table)
	if err != nil {
		return "", fmt.Errorf("Can't open sqlfs %s, %v", table, err)
	}
	defer sqlf.Close()
	fileName := filepath.Join(cwd, "model_dump.tar.gz")
	file, err := os.Create(fileName)
	if err != nil {
		return "", fmt.Errorf("Can't careate model file: %v", err)
	}
	if _, err = io.Copy(file, sqlf); err != nil {
		return "", fmt.Errorf("Can't dump model to local file")
	}
	return fileName, nil
}

// ExtractMetaFromTarball extract metadata from given tarball
// and return the metadata json string. This function do not