src/base/asyncfilestorage.h

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2017  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 <QFile>
  32 #include <QObject>
  33
  34 #include "base/exceptions.h"
  35 #include "base/path.h"
  36
  37 class AsyncFileStorageError : public RuntimeError
  38 {
  39 public:
  40     using RuntimeError::RuntimeError;
  41 };
  42
  43 class AsyncFileStorage : public QObject
  44 {
  45     Q_OBJECT
  46     Q_DISABLE_COPY_MOVE(AsyncFileStorage)
  47
  48 public:
  49     explicit AsyncFileStorage(const Path &storageFolderPath, QObject *parent = nullptr);
  50     ~AsyncFileStorage() override;
  51
  52     void store(const Path &filePath, const QByteArray &data);
  53
  54     Path storageDir() const;
  55
  56 signals:
  57     void failed(const Path &filePath, const QString &errorString);
  58
  59 private:
  60     Q_INVOKABLE void store_impl(const Path &fileName, const QByteArray &data);
  61
  62     Path m_storageDir;
  63     QFile m_lockFile;
  64 };