C++ AbstractConfiguration::has方法代码示例

void Quota::loadFromConfig(const String & config_elem, const String & name_, Poco::Util::AbstractConfiguration & config, pcg64 & rng)
{
    name = name_;

    bool new_keyed_by_ip = config.has(config_elem + ".keyed_by_ip");
    bool new_is_keyed = new_keyed_by_ip || config.has(config_elem + ".keyed");

    if (new_is_keyed != is_keyed || new_keyed_by_ip != keyed_by_ip)
    {
        keyed_by_ip = new_keyed_by_ip;
        is_keyed = new_is_keyed;
        /// Meaning of keys has been changed. Throw away accumulated values.
        quota_for_keys.clear();
    }

    ignore_key_if_not_keyed = config.has(config_elem + ".ignore_key_if_not_keyed");

    QuotaForIntervals new_max(name, {});
    new_max.initFromConfig(config_elem, config, rng);
    if (!new_max.hasEqualConfiguration(max))
    {
        max = new_max;
        for (auto & quota : quota_for_keys)
            quota.second->setMax(max);
    }
}

void SettingsConstraints::setProfile(const String & profile_name, const Poco::Util::AbstractConfiguration & config)
{
    String parent_profile = "profiles." + profile_name + ".profile";
    if (config.has(parent_profile))
        setProfile(parent_profile, config); // Inheritance of one profile from another.

    String path_to_constraints = "profiles." + profile_name + ".constraints";
    if (config.has(path_to_constraints))
        loadFromConfig(path_to_constraints, config);
}

void SettingsConstraints::loadFromConfig(const String & path_to_constraints, const Poco::Util::AbstractConfiguration & config)
{
    if (!config.has(path_to_constraints))
        throw Exception("There is no path '" + path_to_constraints + "' in configuration file.", ErrorCodes::NO_ELEMENTS_IN_CONFIG);

    Poco::Util::AbstractConfiguration::Keys names;
    config.keys(path_to_constraints, names);

    for (const String & name : names)
    {
        String path_to_name = path_to_constraints + "." + name;
        Poco::Util::AbstractConfiguration::Keys constraint_types;
        config.keys(path_to_name, constraint_types);
        for (const String & constraint_type : constraint_types)
        {
            auto get_constraint_value = [&]{ return config.getString(path_to_name + "." + constraint_type); };
            if (constraint_type == "min")
                setMinValue(name, get_constraint_value());
            else if (constraint_type == "max")
                setMaxValue(name, get_constraint_value());
            else if (constraint_type == "readonly")
                setReadOnly(name, true);
            else
                throw Exception("Setting " + constraint_type + " value for " + name + " isn't supported", ErrorCodes::NOT_IMPLEMENTED);
        }
    }
}

DictionaryLifetime::DictionaryLifetime(const Poco::Util::AbstractConfiguration & config, const std::string & config_prefix)
{
	const auto & lifetime_min_key = config_prefix + ".min";
	const auto has_min = config.has(lifetime_min_key);

	this->min_sec = has_min ? config.getInt(lifetime_min_key) : config.getInt(config_prefix);
	this->max_sec = has_min ? config.getInt(config_prefix + ".max") : this->min_sec;
}

std::unique_ptr<RegionsHierarchies> GeoDictionariesLoader::reloadRegionsHierarchies(
    const Poco::Util::AbstractConfiguration & config)
{
    static constexpr auto config_key = "path_to_regions_hierarchy_file";

    if (!config.has(config_key))
        return {};

    const auto default_hierarchy_file = config.getString(config_key);
    auto data_provider = std::make_unique<RegionsHierarchiesDataProvider>(default_hierarchy_file);
    return std::make_unique<RegionsHierarchies>(std::move(data_provider));
}

DictionaryStructure::DictionaryStructure(const Poco::Util::AbstractConfiguration & config, const std::string & config_prefix)
{
	const auto has_id = config.has(config_prefix + ".id");
	const auto has_key = config.has(config_prefix + ".key");

	if (has_key && has_id)
		throw Exception{"Only one of 'id' and 'key' should be specified", ErrorCodes::BAD_ARGUMENTS};

	if (has_id)
		id.emplace(config, config_prefix + ".id");
	else if (has_key)
	{
		key.emplace(getAttributes(config, config_prefix + ".key", false, false));
		if (key->empty())
			throw Exception{"Empty 'key' supplied", ErrorCodes::BAD_ARGUMENTS};
	}
	else
		throw Exception{"Dictionary structure should specify either 'id' or 'key'", ErrorCodes::BAD_ARGUMENTS};

	if (id)
	{
		if (id->name.empty())
			throw Exception{"'id' cannot be empty", ErrorCodes::BAD_ARGUMENTS};

		if (config.has(config_prefix + ".range_min"))
			range_min.emplace(config, config_prefix + ".range_min");

		if (config.has(config_prefix + ".range_max"))
			range_max.emplace(config, config_prefix + ".range_max");

		if (!id->expression.empty() ||
			(range_min && !range_min->expression.empty()) ||
			(range_max && !range_max->expression.empty()))
			has_expressions = true;
	}

	attributes = getAttributes(config, config_prefix);
	if (attributes.empty())
		throw Exception{"Dictionary has no attributes defined", ErrorCodes::BAD_ARGUMENTS};
}

void Settings::loadSettingsFromConfig(const String & path, const Poco::Util::AbstractConfiguration & config)
{
	if (!config.has(path))
		throw Exception("There is no path '" + path + "' in configuration file.", ErrorCodes::NO_ELEMENTS_IN_CONFIG);

	Poco::Util::AbstractConfiguration::Keys config_keys;
	config.keys(path, config_keys);

	for (const std::string & key : config_keys)
	{
		set(key, config.getString(path + "." + key));
	}
}

Pool::Pool(const Poco::Util::AbstractConfiguration & cfg, const std::string & config_name,
     unsigned default_connections_, unsigned max_connections_,
     const char * parent_config_name_)
    : default_connections(default_connections_), max_connections(max_connections_)
{
    server = cfg.getString(config_name + ".host");

    if (parent_config_name_)
    {
        const std::string parent_config_name(parent_config_name_);
        db = cfg.getString(config_name + ".db", cfg.getString(parent_config_name + ".db", ""));
        user = cfg.has(config_name + ".user")
            ? cfg.getString(config_name + ".user")
            : cfg.getString(parent_config_name + ".user");
        password = cfg.has(config_name + ".password")
            ? cfg.getString(config_name + ".password")
            : cfg.getString(parent_config_name + ".password");

        if (!cfg.has(config_name + ".port") && !cfg.has(config_name + ".socket")
            && !cfg.has(parent_config_name + ".port") && !cfg.has(parent_config_name + ".socket"))
            throw Poco::Exception("mysqlxx::Pool configuration: expected port or socket");

        port = cfg.has(config_name + ".port")
            ? cfg.getInt(config_name + ".port")
            : cfg.getInt(parent_config_name + ".port", 0);
        socket = cfg.has(config_name + ".socket")
            ? cfg.getString(config_name + ".socket")
            : cfg.getString(parent_config_name + ".socket", "");
        ssl_ca = cfg.has(config_name + ".ssl_ca")
            ? cfg.getString(config_name + ".ssl_ca")
            : cfg.getString(parent_config_name + ".ssl_ca", "");
        ssl_cert = cfg.has(config_name + ".ssl_cert")
            ? cfg.getString(config_name + ".ssl_cert")
            : cfg.getString(parent_config_name + ".ssl_cert", "");
        ssl_key = cfg.has(config_name + ".ssl_key")
            ? cfg.getString(config_name + ".ssl_key")
            : cfg.getString(parent_config_name + ".ssl_key", "");
    }
    else
    {
        db = cfg.getString(config_name + ".db", "");
        user = cfg.getString(config_name + ".user");
        password = cfg.getString(config_name + ".password");

        if (!cfg.has(config_name + ".port") && !cfg.has(config_name + ".socket"))
            throw Poco::Exception("mysqlxx::Pool configuration: expected port or socket");

        port = cfg.getInt(config_name + ".port", 0);
        socket = cfg.getString(config_name + ".socket", "");
        ssl_ca = cfg.getString(config_name + ".ssl_ca", "");
        ssl_cert = cfg.getString(config_name + ".ssl_cert", "");
        ssl_key = cfg.getString(config_name + ".ssl_key", "");
    }

    connect_timeout = cfg.getInt(config_name + ".connect_timeout",
        cfg.getInt("mysql_connect_timeout",
            MYSQLXX_DEFAULT_TIMEOUT));

    rw_timeout =
        cfg.getInt(config_name + ".rw_timeout",
            cfg.getInt("mysql_rw_timeout",
                MYSQLXX_DEFAULT_RW_TIMEOUT));
}