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[qBittorrent.git] / src / base / asyncfilestorage.cpp
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1 /*
2 * Bittorrent Client using Qt and libtorrent.
3 * Copyright (C) 2017 Vladimir Golovnev <glassez@yandex.ru>
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.
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.
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.
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.
29 #include "asyncfilestorage.h"
31 #include <QDebug>
32 #include <QMetaObject>
34 #include "base/utils/io.h"
36 AsyncFileStorage::AsyncFileStorage(const QString &storageFolderPath, QObject *parent)
37 : QObject(parent)
38 , m_storageDir(storageFolderPath)
39 , m_lockFile(m_storageDir.absoluteFilePath(QStringLiteral("storage.lock")))
41 if (!m_storageDir.mkpath(m_storageDir.absolutePath()))
42 throw AsyncFileStorageError
43 {tr("Could not create directory '%1'.")
44 .arg(m_storageDir.absolutePath())};
46 // TODO: This folder locking approach does not work for UNIX systems. Implement it.
47 if (!m_lockFile.open(QFile::WriteOnly))
48 throw AsyncFileStorageError {m_lockFile.errorString()};
51 AsyncFileStorage::~AsyncFileStorage()
53 m_lockFile.close();
54 m_lockFile.remove();
57 void AsyncFileStorage::store(const QString &fileName, const QByteArray &data)
59 QMetaObject::invokeMethod(this, [this, data, fileName]() { store_impl(fileName, data); }
60 , Qt::QueuedConnection);
63 QDir AsyncFileStorage::storageDir() const
65 return m_storageDir;
68 void AsyncFileStorage::store_impl(const QString &fileName, const QByteArray &data)
70 const QString filePath = m_storageDir.absoluteFilePath(fileName);
71 qDebug() << "AsyncFileStorage: Saving data to" << filePath;
73 const nonstd::expected<void, QString> result = Utils::IO::saveToFile(filePath, data);
74 if (!result)
76 qDebug() << "AsyncFileStorage: Failed to save data";
77 emit failed(filePath, result.error());