ClickHouse/src/Access/UsersConfigAccessStorage.h
2021-06-16 23:28:41 +03:00

68 lines
2.5 KiB
C++

#pragma once
#include <Access/MemoryAccessStorage.h>
#include <Common/ZooKeeper/Common.h>
namespace Poco::Util
{
class AbstractConfiguration;
}
namespace DB
{
class ConfigReloader;
/// Implementation of IAccessStorage which loads all from users.xml periodically.
class UsersConfigAccessStorage : public IAccessStorage
{
public:
static constexpr char STORAGE_TYPE[] = "users.xml";
using CheckSettingNameFunction = std::function<void(const std::string_view &)>;
UsersConfigAccessStorage(const String & storage_name_ = STORAGE_TYPE, const CheckSettingNameFunction & check_setting_name_function_ = {});
UsersConfigAccessStorage(const CheckSettingNameFunction & check_setting_name_function_);
~UsersConfigAccessStorage() override;
const char * getStorageType() const override { return STORAGE_TYPE; }
String getStorageParamsJSON() const override;
String getPath() const;
bool isPathEqual(const String & path_) const;
void setConfig(const Poco::Util::AbstractConfiguration & config);
void load(const String & users_config_path,
const String & include_from_path = {},
const String & preprocessed_dir = {},
const zkutil::GetZooKeeper & get_zookeeper_function = {});
void reload();
void startPeriodicReloading();
private:
void parseFromConfig(const Poco::Util::AbstractConfiguration & config);
std::optional<UUID> findImpl(EntityType type, const String & name) const override;
std::vector<UUID> findAllImpl(EntityType type) const override;
bool existsImpl(const UUID & id) const override;
AccessEntityPtr readImpl(const UUID & id) const override;
String readNameImpl(const UUID & id) const override;
bool canInsertImpl(const AccessEntityPtr &) const override { return false; }
UUID insertImpl(const AccessEntityPtr & entity, bool replace_if_exists) override;
void removeImpl(const UUID & id) override;
void updateImpl(const UUID & id, const UpdateFunc & update_func) override;
scope_guard subscribeForChangesImpl(const UUID & id, const OnChangedHandler & handler) const override;
scope_guard subscribeForChangesImpl(EntityType type, const OnChangedHandler & handler) const override;
bool hasSubscriptionImpl(const UUID & id) const override;
bool hasSubscriptionImpl(EntityType type) const override;
MemoryAccessStorage memory_storage;
CheckSettingNameFunction check_setting_name_function;
String path;
std::unique_ptr<ConfigReloader> config_reloader;
mutable std::mutex load_mutex;
};
}