Function MakeDatabase

src/wallet/walletdb.cpp:1191–1268

}

std::unique_ptr<WalletDatabase> MakeDatabase(const fs::path& path, const DatabaseOptions& options, DatabaseStatus& status, bilingual_str& error)
{
    bool exists;
    try {
        exists = fs::symlink_status(path).type() != fs::file_type::not_found;
    } catch (const fs::filesystem_error& e) {
        error = Untranslated(strprintf("Failed to access database path '%s': %s", fs::PathToString(path), fsbridge::get_filesystem_error_message(e)));
        status = DatabaseStatus::FAILED_BAD_PATH;
        return nullptr;
    }

    std::optional<DatabaseFormat> format;
    if (exists) {
        if (IsBDBFile(BDBDataFile(path))) {
            format = DatabaseFormat::BERKELEY;
        }
        if (IsSQLiteFile(SQLiteDataFile(path))) {
            if (format) {
                error = Untranslated(strprintf("Failed to load database path '%s'. Data is in ambiguous format.", fs::PathToString(path)));
                status = DatabaseStatus::FAILED_BAD_FORMAT;
                return nullptr;
            }
            format = DatabaseFormat::SQLITE;
        }
    } else if (options.require_existing) {
        error = Untranslated(strprintf("Failed to load database path '%s'. Path does not exist.", fs::PathToString(path)));
        status = DatabaseStatus::FAILED_NOT_FOUND;
        return nullptr;
    }

    if (!format && options.require_existing) {
        error = Untranslated(strprintf("Failed to load database path '%s'. Data is not in recognized format.", fs::PathToString(path)));
        status = DatabaseStatus::FAILED_BAD_FORMAT;
        return nullptr;
    }

    if (format && options.require_create) {
        error = Untranslated(strprintf("Failed to create database path '%s'. Database already exists.", fs::PathToString(path)));
        status = DatabaseStatus::FAILED_ALREADY_EXISTS;
        return nullptr;
    }

    // A db already exists so format is set, but options also specifies the format, so make sure they agree
    if (format && options.require_format && format != options.require_format) {
        error = Untranslated(strprintf("Failed to load database path '%s'. Data is not in required format.", fs::PathToString(path)));
        status = DatabaseStatus::FAILED_BAD_FORMAT;
        return nullptr;
    }

    // Format is not set when a db doesn't already exist, so use the format specified by the options if it is set.
    if (!format && options.require_format) format = options.require_format;

    // If the format is not specified or detected, choose the default format based on what is available. We prefer BDB over SQLite for now.
    if (!format) {
#ifdef USE_SQLITE
        format = DatabaseFormat::SQLITE;
#endif
#ifdef USE_BDB