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Copyright 2018-2020, Barcelona Supercomputing Center (BSC), Spain
Copyright 2015-2020, 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.
SPDX-License-Identifier: MIT
*/
#ifndef GEKKOFS_METADATA_DB_HPP
#define GEKKOFS_METADATA_DB_HPP
#include <rocksdb/db.h>
#include <daemon/backend/exceptions.hpp>
namespace gkfs {
namespace metadata {
private:
std::unique_ptr<rdb::DB> db;
rdb::Options options;
rdb::WriteOptions write_opts;
std::string path;
static void optimize_rocksdb_options(rdb::Options& options);
public:
static inline void throw_rdb_status_excpt(const rdb::Status& s);
MetadataDB(const std::string& path);
std::string get(const std::string& key) const;
void put(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;
void iterate_all();
} // namespace metadata
} // namespace gkfs
#endif //GEKKOFS_METADATA_DB_HPP