306 lines
10 KiB
C++
Executable File
306 lines
10 KiB
C++
Executable File
#include "udiskghostImageproxy.h"
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#include <QStorageInfo>
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#include <QFileInfo>
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#include <QDateTime>
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#include <QTimer>
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#include <QDebug>
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#include <unistd.h>
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#include "../common/utils.h"
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#include "../common/mydusizetool.h"
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#include "mymountproxy.h"
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#include "myprocess/calcbackupsize.h"
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IMPLEMENT_DYNCREATE(UDiskGhostImageProxy)
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UDiskGhostImageProxy::UDiskGhostImageProxy()
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{
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m_mksquashfs = nullptr;
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m_p = nullptr;
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m_bSuccess = false;
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m_isFinished = false;
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m_isForce = false;
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connect(this, &UDiskGhostImageProxy::cancel, this, &UDiskGhostImageProxy::cancelEx);
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}
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UDiskGhostImageProxy::~UDiskGhostImageProxy()
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{
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if (!m_kyimg.isEmpty()) {
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QFile kyimg(m_kyimg);
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if (kyimg.exists())
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kyimg.remove();
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}
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}
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/**
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* @brief 环境检测
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*/
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bool UDiskGhostImageProxy::checkEnvEx()
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{
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qDebug() << "UDiskGhostImageProxy::checkEnvEx invoke begin";
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// 1、检查/backup分区是否挂载上(不管是本地磁盘还是u盘设备，都得保证/backup挂载上); 若没挂载，挂载
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MyMountProxy mountProxy;
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MountResult result = mountProxy.mountBackupPartition();
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// 无备份分区
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if (MountResult::CANNOT_GET_BACKUPUUID == result) {
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qInfo() << "There is no backup partition!";
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QString snapshotsPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH;
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snapshotsPath.replace("//", "/");
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Utils::mkpath(snapshotsPath);
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Utils::generateExcludePathsFile();
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} else if (MountResult::MOUNTED != result) {
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emit checkResult(int(BackupResult::BACKUP_PARTITION_MOUNT_FAIL));
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return false;
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}
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// 2、校验backuppoint.xml中相应的备份节点是否存在
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QString xmlPath = Utils::getSysRootPath() + BACKUP_XML_PATH;
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xmlPath.replace("//", "/");
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ParseBackupList xmlParse(xmlPath);
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ParseBackupList::BackupPoint backupPoint = xmlParse.findBackupPointByUuid(m_backupWrapper.m_uuid);
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if (backupPoint.m_backupName.isEmpty()) {
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emit checkResult(int(BackupResult::GHOST_CANNOT_FIND_BACKUPPOINT));
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return false;
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}
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// 3、校验备份数据是否存在
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QString dataPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/data";
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dataPath.replace("//", "/");
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if (Utils::isDirEmpty(dataPath)) {
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emit checkResult(int(BackupResult::GHOST_SRC_DIRECTORY_IS_NOT_EXIST));
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return false;
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}
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qint64 itotalSize = Utils::getDirOrFileSize(dataPath);
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// 4、校验移动设备情况：空间大小、文件格式、挂载模式等
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QString backupPath(m_backupWrapper.m_prefixDestPath);
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backupPath.replace("//", "/");
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QStorageInfo udisk(backupPath);
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QString udisk_type = udisk.fileSystemType();
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qDebug() << "udisk's filesystemtype is " << udisk_type;
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if (udisk_type == "vfat") {
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qCritical() << m_backupWrapper.m_prefixDestPath + " udisk's filesystemtype is vfat";
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emit checkResult(int(BackupResult::UDISK_FILESYSTEM_TYPE_IS_VFAT));
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return false;
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}
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if (udisk.isReadOnly()) {
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// 只读挂载的U盘
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qCritical() << QString("udisk(%s) is readonly filesystem").arg(m_backupWrapper.m_prefixDestPath);
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emit checkResult(int(BackupResult::UDISK_FILESYSTEM_IS_READONLY));
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return false;
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}
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m_destPath = m_backupWrapper.m_prefixDestPath + GHOST_PATH;
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m_destPath.replace("//", "/");
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Utils::mkpath(m_destPath);
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m_kyimg = m_destPath + "/" + m_backupWrapper.m_backupName;
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m_kyimg.replace("//", "/");
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QFile kyimg(m_kyimg);
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if (kyimg.exists())
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kyimg.remove();
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QStorageInfo storageInfo(m_destPath);
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qint64 sizeAvailable = storageInfo.bytesAvailable();
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if (sizeAvailable < itotalSize / 2) {
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emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
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return false;
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}
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// 5、依托本地存储先行压缩再拷贝到移动设备，在此查找空闲分区临时借用
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bool found = false;
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QHash<QString, qint64> hash = Utils::getAvailableSizeOfPartitions();
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for (QHash<QString, qint64>::const_iterator it = hash.constBegin(); it != hash.constEnd(); ++it) {
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QString path = it.key();
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qint64 leftSize = it.value();
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if (leftSize > itotalSize / 2) {
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Utils::mkpath(path + GHOST_PATH);
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m_kyimg = path + GHOST_PATH + "/" + m_backupWrapper.m_backupName;
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m_kyimg.replace("//", "/");
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QFile kyimg(m_kyimg);
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if (kyimg.exists())
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kyimg.remove();
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found = true;
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break ;
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}
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}
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if (!found) {
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emit checkResult(int(BackupResult::BACKUP_CAPACITY_FOR_UDISKIMG_IS_NOT_ENOUGH));
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return false;
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}
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emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
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qDebug() << "UDiskGhostImageProxy::checkEnvEx invoke end";
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return true;
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}
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/**
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* @brief 任务处理
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*/
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void UDiskGhostImageProxy::doWorkEx()
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{
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qDebug() << "UDiskGhostImageProxy::doWorkEx invoke begin";
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if (!checkEnvEx())
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return ;
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doGhostImage();
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qDebug() << "UDiskGhostImageProxy::doWorkEx invoke end";
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}
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/**
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* @brief 任务取消
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*/
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void UDiskGhostImageProxy::cancelEx()
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{
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m_bCancel = true;
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if (!m_isFinished) {
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emit this->checkResult(int(BackupResult::START_CANCEL));
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if (m_mksquashfs)
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m_mksquashfs->stop();
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if (m_p)
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m_p->stop();
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QProcess::execute("sync");
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Utils::wait(5);
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deleteFailedData();
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emit this->checkResult(int(BackupResult::CANCEL_SUCCESS));
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}
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}
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/**
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* @brief 失败则删除相应数据
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*/
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void UDiskGhostImageProxy::deleteFailedData()
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{
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// 1、删除临时镜像文件
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if (!m_kyimg.isEmpty()) {
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QFile kyimg(m_kyimg);
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if (kyimg.exists())
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kyimg.remove();
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}
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// 2、删除目标镜像文件
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QString kyimgFile = m_destPath + "/" + m_backupWrapper.m_backupName;
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kyimgFile.replace("//", "/");
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QFile kyimgDest(kyimgFile);
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if (kyimgDest.exists())
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kyimgDest.remove();
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}
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/**
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* @brief ghost镜像
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*/
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void UDiskGhostImageProxy::doGhostImage()
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{
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qDebug() << "UDiskGhostImageProxy::doGhostImage invoke begin";
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QStringList args;
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// 拼接备份源路径和目标路径
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QString srcPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/data";
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srcPath.replace("//", "/");
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args << srcPath;
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args << m_kyimg;
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m_mksquashfs = new MkSquashFSProcess(this);
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connect(m_mksquashfs, &MkSquashFSProcess::progress, this, &UDiskGhostImageProxy::progress);
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connect(m_mksquashfs, &MkSquashFSProcess::finished, this, [&](bool result) {
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qDebug() << "UDiskGhostImageProxy::finished invoke begin";
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// 如果是取消了操作，则不再发送其它信息
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if (m_bCancel)
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return ;
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if (result && !m_isForce) {
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chown(m_kyimg.toLocal8Bit().data(), m_backupWrapper.m_frontUid, m_backupWrapper.m_gid);
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// 同步到U盘
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m_p = new RsyncPathToDirProcess(this);
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connect(m_p, &RsyncPathToDirProcess::progress, this, &UDiskGhostImageProxy::progress);
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connect(m_p, &RsyncPathToDirProcess::finished, this, [&](bool resultRsync) {
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// 如果是取消了操作，则不再发送其它信息
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if (m_bCancel)
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return ;
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m_isForce = false;
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m_isFinished = true;
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if (resultRsync) {
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// QFileInfo fileInfo(m_kyimg);
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// QString imgSize = Utils::StringBySize(fileInfo.size());
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// QString time = QDateTime::currentDateTime().toString("yy-MM-dd hh:mm:ss");
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// Utils::writeBackupLog(time + ","
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// + m_backupWrapper.m_uuid + "," + QString::number(m_backupWrapper.m_type) + ","
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// + m_backupWrapper.m_note + "," + imgSize
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// + ",," + m_backupWrapper.m_backupName);
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m_bSuccess = true;
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}
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QFile kyimg(m_kyimg);
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if (kyimg.exists())
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kyimg.remove();
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emit this->workResult(resultRsync);
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});
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QStringList arguments;
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arguments << "-av";
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arguments << "--info=progress2";
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arguments << m_kyimg;
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arguments << m_destPath + "/";
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m_p->start(arguments, false);
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emit this->checkResult(int(BackupResult::MKSQUASHFS_DO_SUCCESS));
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emit this->progress(0);
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} else {
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m_isFinished = true;
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emit this->workResult(false);
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}
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qDebug() << "UDiskGhostImageProxy::finished invoke end";
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});
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m_bSuccess = false;
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m_isFinished = false;
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m_mksquashfs->start(args);
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emit checkResult(int(BackupResult::GHOST_START_SUCCESS));
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QTimer::singleShot(1*1000, this, &UDiskGhostImageProxy::checkDestDirExists);
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qDebug() << "UDiskGhostImageProxy::doGhostImage invoke end";
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}
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/**
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* @brief 校验移动盘是否还在
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* @return: bool,存在返回true；不存在返回false
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* @author: zhaominyong
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* @since: 2021/05/24
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* @note:
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* add by zhaominyong at 2021/05/24 for bug:54377 【备份还原】备份数据到U盘的过程中拔出U盘，备份还原工具仍然一直显示正在备份数据
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*/
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bool UDiskGhostImageProxy::checkDestDirExists()
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{
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if (!m_isFinished)
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{
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// 拔掉U盘后，没有响应的场景（怀疑可能是某应用程序关闭引起，希望不是dbus服务关掉了）
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if (m_isForce) {
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emit this->workResult(false);
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return false;
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}
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if (Utils::isDirEmpty(m_backupWrapper.m_prefixDestPath)) {
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qCritical() << QString("dstDir %s is not exist!").arg(m_backupWrapper.m_prefixDestPath);
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if (m_mksquashfs)
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m_mksquashfs->stop();
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if (m_p)
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m_p->stop();
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// 10s钟后如果还没有退出，则强制退出
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QTimer::singleShot(10*1000, this, &UDiskGhostImageProxy::checkDestDirExists);
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m_isForce = true;
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} else {
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QTimer::singleShot(1*1000, this, &UDiskGhostImageProxy::checkDestDirExists);
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}
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}
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return true;
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}
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