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+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2019  ZeroTier, Inc.  https://www.zerotier.com/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
+ */
+
+#ifndef ZT_CONTROLLER_LFDB_HPP
+#define ZT_CONTROLLER_LFDB_HPP
+
+#include "DB.hpp"
+
+#include <mutex>
+#include <string>
+#include <unordered_map>
+#include <atomic>
+
+namespace ZeroTier {
+
+/**
+ * DB implementation for controller that stores data in LF
+ */
+class LFDB : public DB
+{
+public:
+	/**
+	 * @param nc Network controller
+	 * @param myId Identity of controller node (with secret)
+	 * @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(EmbeddedNetworkController *const nc,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 void save(nlohmann::json *orig,nlohmann::json &record);
+	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);
+
+protected:
+	EmbeddedNetworkController *const _nc;
+	const Identity _myId;
+
+	std::string _lfOwnerPrivate;
+	std::string _lfOwnerPublic;
+	std::string _lfNodeHost;
+	int _lfNodePort;
+
+	struct _MemberState
+	{
+		InetAddress lastOnlineAddress;
+		int64_t lastOnlineTime;
+		bool dirty;
+		bool lastOnlineDirty;
+	};
+	struct _NetworkState
+	{
+		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