src/base/bittorrent/dbresumedatastorage.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2021-2022  Vladimir Golovnev <glassez@yandex.ru>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #pragma once
  30
  31 #include <QReadWriteLock>
  32
  33 #include "base/pathfwd.h"
  34 #include "base/utils/thread.h"
  35 #include "resumedatastorage.h"
  36
  37 class QThread;
  38
  39 namespace BitTorrent
  40 {
  41     class DBResumeDataStorage final : public ResumeDataStorage
  42     {
  43         Q_OBJECT
  44         Q_DISABLE_COPY_MOVE(DBResumeDataStorage)
  45
  46     public:
  47         explicit DBResumeDataStorage(const Path &dbPath, QObject *parent = nullptr);
  48         ~DBResumeDataStorage() override;
  49
  50         QList<TorrentID> registeredTorrents() const override;
  51         LoadResumeDataResult load(const TorrentID &id) const override;
  52
  53         void store(const TorrentID &id, const LoadTorrentParams &resumeData) const override;
  54         void remove(const TorrentID &id) const override;
  55         void storeQueue(const QList<TorrentID> &queue) const override;
  56
  57     private:
  58         void doLoadAll() const override;
  59         int currentDBVersion() const;
  60         void createDB() const;
  61         void updateDB(int fromVersion) const;
  62         void enableWALMode() const;
  63
  64         Utils::Thread::UniquePtr m_ioThread;
  65
  66         class Worker;
  67         Worker *m_asyncWorker = nullptr;
  68
  69         mutable QReadWriteLock m_dbLock;
  70     };
  71 }