file.hpp

/*
 *    Copyright (C) 2019-2021 Joshua Boudreau <jboudreau@45drives.com>
 *
 *    This file is part of autotier.
 *
 *    autotier 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.
 *
 *    autotier 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 autotier.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include "metadata.hpp"
 
#include <45d/Bytes.hpp>
#include <boost/filesystem.hpp>
#include <rocksdb/db.h>
namespace fs = boost::filesystem;
 
class Tier;
 
class File {
public:
    File(void);
    File(fs::path full_path, std::shared_ptr<rocksdb::DB> db, Tier *tptr);
    File(const File &other);
    ~File();
    void update_db(void);
    void calc_popularity(double period_seconds);
    fs::path full_path(void) const;
    fs::path relative_path(void) const;
    Tier *tier_ptr(void) const;
    double popularity(void) const;
    struct timeval atime(void) const;
    ffd::Bytes size(void) const;
    void pin(void);
    bool is_pinned(void) const;
    void transfer_to_tier(Tier *tptr);
    void overwrite_times(void) const;
    void change_path(const fs::path &new_path);
private:
    ffd::Bytes size_; 
    Tier *tier_ptr_;  
    struct timeval
        times_[2]; 
    time_t atime_; 
    time_t ctime_; 
    fs::path
        relative_path_; 
    std::shared_ptr<rocksdb::DB> db_;   
    Metadata metadata_; 
};