LFDB.hpp

/*
 * Copyright (c)2019 ZeroTier, Inc.
 *
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file in the project's root directory.
 *
 * Change Date: 2026-01-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2.0 of the Apache License.
 */
/****/

#ifndef ZT_CONTROLLER_LFDB_HPP
#define ZT_CONTROLLER_LFDB_HPP

#include "DB.hpp"

#include <atomic>
#include <mutex>
#include <string>
#include <unordered_map>

namespace ZeroTier {

/**
 * DB implementation for controller that stores data in LF
 */
class LFDB : public DB {
  public:
	/**
	 * @param myId This controller's identity
	 * @param path Base path for ZeroTier node itself
	 * @param lfOwnerPrivate LF owner private in PEM format
	 * @param lfOwnerPublic LF owner public in @base62 format
	 * @param lfNodeHost LF node host
	 * @param lfNodePort LF node http (not https) port
	 * @param storeOnlineState If true, store online/offline state and IP info in LF (a lot of data, only for private networks!)
	 */
	LFDB(const Identity& myId, const char* path, const char* lfOwnerPrivate, const char* lfOwnerPublic, const char* lfNodeHost, int lfNodePort, bool storeOnlineState);
	virtual ~LFDB();

	virtual bool waitForReady();
	virtual bool isReady();
	virtual bool save(nlohmann::json& record, bool notifyListeners);
	virtual void eraseNetwork(const uint64_t networkId);
	virtual void eraseMember(const uint64_t networkId, const uint64_t memberId);
	virtual void nodeIsOnline(const uint64_t networkId, const uint64_t memberId, const InetAddress& physicalAddress);
	virtual void nodeIsOnline(const uint64_t networkId, const uint64_t memberId, const InetAddress& physicalAddress, const char* osArch);

  protected:
	const Identity _myId;

	std::string _lfOwnerPrivate, _lfOwnerPublic;
	std::string _lfNodeHost;
	int _lfNodePort;

	struct _MemberState {
		_MemberState() : lastOnlineAddress(), lastOnlineTime(0), dirty(false), lastOnlineDirty(false)
		{
		}
		InetAddress lastOnlineAddress;
		int64_t lastOnlineTime;
		bool dirty;
		bool lastOnlineDirty;
	};
	struct _NetworkState {
		_NetworkState() : members(), dirty(false)
		{
		}
		std::unordered_map<uint64_t, _MemberState> members;
		bool dirty;
	};
	std::unordered_map<uint64_t, _NetworkState> _state;
	std::mutex _state_l;

	std::atomic_bool _running;
	std::atomic_bool _ready;
	std::thread _syncThread;
	bool _storeOnlineState;
};

}	// namespace ZeroTier

#endif