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#pragma once
#include <Access/EnabledSettings.h>
#include <Poco/LRUCache.h>
#include <base/scope_guard.h>
#include <map>
#include <unordered_map>
namespace DB
{
class AccessControl;
struct SettingsProfile;
using SettingsProfilePtr = std::shared_ptr<const SettingsProfile>;
struct SettingsProfilesInfo;
/// Reads and caches all the settings profiles.
class SettingsProfilesCache
{
public:
explicit SettingsProfilesCache(const AccessControl & access_control_);
~SettingsProfilesCache();
void setDefaultProfileName(const String & default_profile_name);
std::shared_ptr<const EnabledSettings> getEnabledSettings(
const UUID & user_id,
const SettingsProfileElements & settings_from_user_,
const boost::container::flat_set<UUID> & enabled_roles,
const SettingsProfileElements & settings_from_enabled_roles_);
std::shared_ptr<const SettingsProfilesInfo> getSettingsProfileInfo(const UUID & profile_id);
private:
void ensureAllProfilesRead();
void profileAddedOrChanged(const UUID & profile_id, const SettingsProfilePtr & new_profile);
void profileRemoved(const UUID & profile_id);
void mergeSettingsAndConstraints();
void mergeSettingsAndConstraintsFor(EnabledSettings & enabled) const;
void substituteProfiles(SettingsProfileElements & elements, std::vector<UUID> & substituted_profiles, std::unordered_map<UUID, String> & names_of_substituted_profiles) const;
const AccessControl & access_control;
std::unordered_map<UUID, SettingsProfilePtr> all_profiles;
std::unordered_map<String, UUID> profiles_by_name;
bool all_profiles_read = false;
scope_guard subscription;
std::map<EnabledSettings::Params, std::weak_ptr<EnabledSettings>> enabled_settings;
std::optional<UUID> default_profile_id;
Poco::LRUCache<UUID, std::shared_ptr<const SettingsProfilesInfo>> profile_infos_cache;
mutable std::mutex mutex;
};
}
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