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#pragma once
#include "ClientInfo.h"
#include <list>
#include <map>
#include <memory>
#include <mutex>
namespace DB
{
struct SessionInfo
{
const String session_id;
};
using SessionInfos = std::list<SessionInfo>;
using SessionsForUser = std::unordered_map<UUID, SessionInfos>;
class SessionTracker;
class SessionTracker
{
public:
class Session : boost::noncopyable
{
public:
explicit Session(SessionTracker & tracker_,
const UUID & user_id_,
SessionInfos::const_iterator session_info_iter_) noexcept;
~Session();
private:
friend class SessionTracker;
SessionTracker & tracker;
const UUID user_id;
const SessionInfos::const_iterator session_info_iter;
};
using SessionTrackerHandle = std::unique_ptr<SessionTracker::Session>;
SessionTrackerHandle trackSession(const UUID & user_id,
const SessionInfo & session_info,
size_t max_sessions_for_user);
private:
/// disallow manual messing with session tracking
friend class Session;
std::mutex mutex;
SessionsForUser sessions_for_user TSA_GUARDED_BY(mutex);
void stopTracking(const UUID& user_id, SessionInfos::const_iterator session_info_iter);
};
}
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