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#pragma once
#include <Core/UUID.h>
#include <unordered_map>
#include <unordered_set>
namespace DB
{
class AccessControl;
enum class AccessEntityType;
struct IAccessEntity;
using AccessEntityPtr = std::shared_ptr<const IAccessEntity>;
class AccessRightsElements;
class IBackup;
using BackupPtr = std::shared_ptr<const IBackup>;
class IBackupEntry;
using BackupEntryPtr = std::shared_ptr<const IBackupEntry>;
struct RestoreSettings;
/// Makes a backup of access entities of a specified type.
std::pair<String, BackupEntryPtr> makeBackupEntryForAccess(
const std::vector<std::pair<UUID, AccessEntityPtr>> access_entities,
const String & data_path_in_backup,
size_t counter,
const AccessControl & access_control);
/// Restores access entities from a backup.
class AccessRestorerFromBackup
{
public:
AccessRestorerFromBackup(const BackupPtr & backup_, const RestoreSettings & restore_settings_);
~AccessRestorerFromBackup();
/// Adds a data path to loads access entities from.
void addDataPath(const String & data_path);
/// Checks that the current user can do restoring.
AccessRightsElements getRequiredAccess() const;
/// Inserts all access entities loaded from all the paths added by addDataPath().
std::vector<std::pair<UUID, AccessEntityPtr>> getAccessEntities(const AccessControl & access_control) const;
private:
BackupPtr backup;
bool allow_unresolved_access_dependencies = false;
std::vector<std::pair<UUID, AccessEntityPtr>> entities;
std::unordered_map<UUID, std::pair<String, AccessEntityType>> dependencies;
std::unordered_set<String> data_paths;
};
}
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