Function registerDatabaseOrdinary

src/Databases/DatabaseOrdinary.cpp:777–808

void registerDatabaseOrdinary(DatabaseFactory & factory);
void registerDatabaseOrdinary(DatabaseFactory & factory)
{
    auto create_fn = [](const DatabaseFactory::Arguments & args)
    {
        if (!args.create_query.attach && !args.context->getSettingsRef()[Setting::allow_deprecated_database_ordinary])
            throw Exception(
                ErrorCodes::UNKNOWN_DATABASE_ENGINE,
                "Ordinary database engine is deprecated (see also allow_deprecated_database_ordinary setting)");

        // Do not warn about ordinary databases that is most likely created by recovering replicas
        if (!args.database_name.ends_with(DatabaseReplicated::BROKEN_TABLES_SUFFIX))
            args.context->addWarningMessageAboutDatabaseOrdinary(args.database_name);
        else
            args.context->addOrUpdateWarningMessage(
                Context::WarningType::MAYBE_BROKEN_TABLES,
                PreformattedMessage::create(
                    "The database {} is probably created during recovering a lost replica. If it has no tables, it can be deleted. If it "
                    "has tables, it worth to check why they were considered broken.",
                    backQuoteIfNeed(args.database_name)));

        DatabaseMetadataDiskSettings database_metadata_disk_settings;
        auto * engine_define = args.create_query.storage;
        chassert(engine_define);
        database_metadata_disk_settings.loadFromQuery(*engine_define, args.context, isLoadingFromExistingMetadata(args.mode));

        return make_shared<DatabaseOrdinary>(args.database_name, args.metadata_path, args.context, database_metadata_disk_settings);
    };
    factory.registerDatabase("Ordinary", create_fn, /*features=*/{.supports_settings = true}, Documentation{
        .description = "The legacy, deprecated default database engine. It stores each table in its own metadata file and has been superseded by the `Atomic` engine.",
        .syntax = "ENGINE = Ordinary",
        .related = {"Atomic"}});
}
}