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/*
Copyright 2018-2021, Barcelona Supercomputing Center (BSC), Spain
Copyright 2015-2021, Johannes Gutenberg Universitaet Mainz, Germany
This software was partially supported by the
EC H2020 funded project NEXTGenIO (Project ID: 671951, www.nextgenio.eu).
This software was partially supported by the
ADA-FS project under the SPPEXA project funded by the DFG.
This file is part of GekkoFS.
GekkoFS 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.
GekkoFS 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 GekkoFS. If not, see <https://www.gnu.org/licenses/>.
SPDX-License-Identifier: GPL-3.0-or-later
*/
#ifndef GEKKOFS_METADATA_DB_HPP
#define GEKKOFS_METADATA_DB_HPP
#include <rocksdb/db.h>
#include <daemon/backend/exceptions.hpp>
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#include <tuple>
private:
std::unique_ptr<rdb::DB> db;
rdb::Options options;
rdb::WriteOptions write_opts;
std::string path;
std::shared_ptr<spdlog::logger> log_;
static void
optimize_rocksdb_options(rdb::Options& options);
public:
static inline void
throw_rdb_status_excpt(const rdb::Status& s);
explicit MetadataDB(const std::string& path);
std::string
get(const std::string& key) const;
void
put(const std::string& key, const std::string& val);
void
put_no_exist(const std::string& key, const std::string& val);
void
remove(const std::string& key);
bool
exists(const std::string& key);
void
update(const std::string& old_key, const std::string& new_key,
const std::string& val);
void
increase_size(const std::string& key, size_t size, bool append);
void
decrease_size(const std::string& key, size_t size);
std::vector<std::pair<std::string, bool>>
get_dirents(const std::string& dir) const;
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std::vector<std::tuple<std::string, bool, size_t, time_t>>
get_dirents_extended(const std::string& dir) const;
#endif // GEKKOFS_METADATA_DB_HPP