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ImageInfo.h
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ImageInfo.h
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///////////////////////////////////////////////////////////////////////////////
///
/// @file ImageInfo.h
///
/// qemu-img image and backing chain information.
///
/// @author mperevedentsev
///
/// Copyright (c) 2005-2015 Parallels IP Holdings GmbH
///
/// This file is part of Virtuozzo Core. Virtuozzo Core 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 2 of the License, or (at your option) any
/// later version.
///
/// This program 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 this program; if not, write to the Free Software
/// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
/// 02110-1301, USA.
///
/// Our contact details: Parallels IP Holdings GmbH, Vordergasse 59, 8200
/// Schaffhausen, Switzerland.
///
///////////////////////////////////////////////////////////////////////////////
#ifndef IMAGE_INFO_H
#define IMAGE_INFO_H
#include <QString>
#include <QByteArray>
#include <boost/property_tree/ptree.hpp>
#include "Expected.h"
#include "Util.h"
namespace Image
{
////////////////////////////////////////////////////////////
// Info
struct Info
{
Info(const QString& filename, quint64 virtualSize,
quint64 actualSize, const QString &format):
m_filename(filename), m_virtualSize(virtualSize),
m_actualSize(actualSize), m_format(format)
{
}
// backingFilename only with fullBackingFilename
Info(const QString& filename, quint64 virtualSize,
quint64 actualSize, const QString &format,
const QString &backingFilename,
const QString &fullBackingFilename):
m_filename(filename), m_virtualSize(virtualSize),
m_actualSize(actualSize), m_format(format),
m_backingFilename(backingFilename),
m_fullBackingFilename(fullBackingFilename)
{
}
const QString& getFilename() const
{
return m_filename;
}
quint64 getVirtualSize() const
{
return m_virtualSize;
}
quint64 getActualSize() const
{
return m_actualSize;
}
const QString& getFormat() const
{
return m_format;
}
const QString& getBackingFilename() const
{
return m_backingFilename;
}
const QString& getFullBackingFilename() const
{
return m_fullBackingFilename;
}
QString toString() const;
private:
QString m_filename;
quint64 m_virtualSize;
quint64 m_actualSize;
QString m_format;
QString m_backingFilename;
QString m_fullBackingFilename;
};
////////////////////////////////////////////////////////////
// Chain
struct Chain
{
typedef QList<Info>::const_iterator const_iterator;
Chain(const QList<Info> &list):
m_list(list)
{
}
const QList<Info>& getList() const
{
return m_list;
}
QString toString() const;
quint64 getActualSizeSum() const;
quint64 getVirtualSizeMax() const;
private:
QList<Info> m_list;
};
////////////////////////////////////////////////////////////
// Parser
struct Parser
{
Parser(const QString &dirPath):
m_dirPath(dirPath)
{
}
/* Returns chain of backing images, from oldest to newest. */
Expected<Chain> parse(const QByteArray &data);
private:
Expected<Info> parseInfo(const boost::property_tree::ptree &pt);
QString m_dirPath;
};
////////////////////////////////////////////////////////////
// Unit
struct Unit
{
Unit(const QString &diskPath):
m_diskPath(diskPath)
{
}
Expected<Image::Chain> getChain() const;
Expected<Image::Chain> getChainNoSnapshots() const;
Expected<QStringList> getSnapshots() const;
Expected<void> checkSnapshots() const;
Expected<QString> createSnapshot(const CallAdapter &adapter) const;
Expected<void> applySnapshot(const QString &id, const CallAdapter &adapter) const;
Expected<void> deleteSnapshot(const QString &id, const CallAdapter &adapter) const;
private:
QString m_diskPath;
};
} // namespace Image
#endif // IMAGE_INFO_H