status-go/common/dbsetup/db_setup.go

54 lines
1.2 KiB
Go

package dbsetup
import (
"database/sql"
"errors"
"github.com/ethereum/go-ethereum/log"
)
const InMemoryPath = ":memory:"
// The reduced number of kdf iterations (for performance reasons) which is
// currently used for derivation of the database key
// https://github.com/status-im/status-go/pull/1343
// https://notes.status.im/i8Y_l7ccTiOYq09HVgoFwA
const ReducedKDFIterationsNumber = 3200
type DatabaseInitializer interface {
Initialize(path, password string, kdfIterationsNumber int) (*sql.DB, error)
}
// GetDBFilename takes an instance of sql.DB and returns the filename of the "main" database
func GetDBFilename(db *sql.DB) (string, error) {
if db == nil {
logger := log.New()
logger.Warn("GetDBFilename was passed a nil pointer sql.DB")
return "", nil
}
var i, category, filename string
rows, err := db.Query("PRAGMA database_list;")
if err != nil {
return "", err
}
defer rows.Close()
for rows.Next() {
err = rows.Scan(&i, &category, &filename)
if err != nil {
return "", err
}
// The "main" database is the one we care about
if category == "main" {
return filename, nil
}
}
if err := rows.Err(); err != nil {
return "", err
}
return "", errors.New("no main database found")
}