mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-20 21:43:08 +00:00
119 lines
4.8 KiB
C++
119 lines
4.8 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ZT_JSONDB_HPP
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#define ZT_JSONDB_HPP
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string>
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#include <map>
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#include <stdexcept>
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#include <vector>
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#include <algorithm>
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#include "../node/Constants.hpp"
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#include "../node/Utils.hpp"
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#include "../ext/json/json.hpp"
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#include "../osdep/OSUtils.hpp"
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namespace ZeroTier {
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/**
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* Hierarchical JSON store that persists into the filesystem
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*/
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class JSONDB
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{
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public:
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JSONDB(const std::string &basePath) :
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_basePath(basePath)
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{
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_reload(_basePath);
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}
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inline void reload()
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{
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_db.clear();
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_reload(_basePath);
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}
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bool writeRaw(const std::string &n,const std::string &obj);
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bool put(const std::string &n,const nlohmann::json &obj);
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inline bool put(const std::string &n1,const std::string &n2,const nlohmann::json &obj) { return this->put((n1 + "/" + n2),obj); }
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inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3),obj); }
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inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3 + "/" + n4),obj); }
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inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5),obj); }
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const nlohmann::json &get(const std::string &n,unsigned long maxSinceCheck = 0);
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inline const nlohmann::json &get(const std::string &n1,const std::string &n2,unsigned long maxSinceCheck = 0) { return this->get((n1 + "/" + n2),maxSinceCheck); }
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inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3,unsigned long maxSinceCheck = 0) { return this->get((n1 + "/" + n2 + "/" + n3),maxSinceCheck); }
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inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,unsigned long maxSinceCheck = 0) { return this->get((n1 + "/" + n2 + "/" + n3 + "/" + n4),maxSinceCheck); }
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inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5,unsigned long maxSinceCheck = 0) { return this->get((n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5),maxSinceCheck); }
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void erase(const std::string &n);
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inline void erase(const std::string &n1,const std::string &n2) { this->erase(n1 + "/" + n2); }
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inline void erase(const std::string &n1,const std::string &n2,const std::string &n3) { this->erase(n1 + "/" + n2 + "/" + n3); }
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inline void erase(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4) { this->erase(n1 + "/" + n2 + "/" + n3 + "/" + n4); }
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inline void erase(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5) { this->erase(n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5); }
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template<typename F>
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inline void filter(const std::string &prefix,unsigned long maxSinceCheck,F func)
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{
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for(std::map<std::string,_E>::iterator i(_db.lower_bound(prefix));i!=_db.end();) {
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if ((i->first.length() >= prefix.length())&&(!memcmp(i->first.data(),prefix.data(),prefix.length()))) {
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if (!func(i->first,get(i->first,maxSinceCheck))) {
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std::map<std::string,_E>::iterator i2(i); ++i2;
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this->erase(i->first);
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i = i2;
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} else ++i;
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} else break;
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}
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}
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inline bool operator==(const JSONDB &db) const { return ((_basePath == db._basePath)&&(_db == db._db)); }
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inline bool operator!=(const JSONDB &db) const { return (!(*this == db)); }
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private:
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void _reload(const std::string &p);
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bool _isValidObjectName(const std::string &n);
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std::string _genPath(const std::string &n,bool create);
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struct _E
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{
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nlohmann::json obj;
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uint64_t lastModifiedOnDisk;
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uint64_t lastCheck;
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inline bool operator==(const _E &e) const { return (obj == e.obj); }
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inline bool operator!=(const _E &e) const { return (obj != e.obj); }
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};
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std::string _basePath;
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std::map<std::string,_E> _db;
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};
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} // namespace ZeroTier
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#endif
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