430 lines
13 KiB
C++
Executable File
430 lines
13 KiB
C++
Executable File
#include "databackupproxy.h"
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#include <QStorageInfo>
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#include <QDateTime>
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#include <QDebug>
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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(DataBackupProxy)
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DataBackupProxy::DataBackupProxy()
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{
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m_isOnlyCheck = true;
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m_bSuccess = false;
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m_isFinished = false;
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m_p = nullptr;
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m_size = 0;
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m_calc = new CalcBackupSize(this);
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connect(this, &DataBackupProxy::cancel, this, &DataBackupProxy::cancelEx);
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}
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DataBackupProxy::~DataBackupProxy()
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{
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delete m_p;
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m_p = nullptr;
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delete m_calc;
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m_calc = nullptr;
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}
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/**
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* @brief 环境检测
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* @return false,检测失败;true,检测成功
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*/
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bool DataBackupProxy::checkEnvEx()
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{
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qDebug() << "DataBackupProxy::checkEnv 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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if ( MountResult::MOUNTED != mountProxy.mountBackupPartition() ) {
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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、判断备份是否增量备份
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isIncBackup();
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// 3、检测空间是否满足备份
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calcSizeForBackup();
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qDebug() << "DataBackupProxy::checkEnv invoke end";
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return true;
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}
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/**
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* @brief 执行备份逻辑
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*/
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void DataBackupProxy::doWorkEx()
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{
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qDebug() << "DataBackupProxy::doWorkEx invoke begin";
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m_isOnlyCheck = false;
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// 环境检测
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checkEnvEx();
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qDebug() << "DataBackupProxy::doWorkEx invoke end";
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}
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/**
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* @brief 取消操作
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*/
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void DataBackupProxy::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_calc)
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m_calc->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 DataBackupProxy::deleteFailedData()
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{
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if (m_curUuid.isEmpty())
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return;
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// 1、删除备份目录
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QString destPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_curUuid;
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destPath.replace("//", "/");
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QStringList args;
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args << "-rf";
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args << destPath;
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QProcess::execute("rm", args);
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// 2、删除xml文件中的备份项
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QString xmlPath = Utils::getSysRootPath() + BACKUP_XML_PATH;
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xmlPath.replace("//", "/");
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ParseBackupList parse(xmlPath);
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parse.deleteItem(m_curUuid);
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}
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/**
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* @brief 判断是否增量备份
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* @return true,增量备份； false，全量备份
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*/
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bool DataBackupProxy::isIncBackup()
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{
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QString backupPath;
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ParseBackupList::BackupPoint point;
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if (m_backupWrapper.m_uuid.isEmpty()) {
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return false;
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} else {
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backupPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/data";
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}
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backupPath.replace("//", "/");
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if (Utils::isDirExist(backupPath)) {
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m_backupWrapper.m_bIncrement = true;
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m_backupWrapper.m_type = BackupType::INC_BACKUP_DATA;
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return true;
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}
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return false;
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}
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/**
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* @brief 校验剩余空间是否满足备份
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*/
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bool DataBackupProxy::checkFreeCapacity(qint64 itotalSize)
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{
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qDebug() << "DataBackupProxy::checkFreeCapacity 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 false;
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// 1、计算待备份数据的大小
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m_size = itotalSize;
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// 备份过程中会有一些临时文件产生，会占用一部分空间，故我们预留5M的空间
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itotalSize += 5 * MB;
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// 2、计算备份分区剩余空间大小
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QString backupPath(Utils::getSysRootPath() + BACKUP_PATH);
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backupPath.replace("//", "/");
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QStorageInfo backupDisk(backupPath);
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qint64 freeSize = backupDisk.bytesAvailable();
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// 3、校验空间是否足够
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bool result = true;
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if (itotalSize > freeSize) {
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emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
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result = false;
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return result;
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} else {
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emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
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}
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if (m_isOnlyCheck)
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return result;
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// 开始备份
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doBackup();
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qDebug() << "DataBackupProxy::checkFreeCapacity invoke end";
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return result;
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}
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/**
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* @brief 计算备份所需空间大小
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* @return 计算备份所需空间大小,单位字节
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*/
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void DataBackupProxy::calcSizeForBackup()
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{
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QString destPath = Utils::getSysRootPath();
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QStringList args;
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if (m_backupWrapper.m_bIncrement) {
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// 在原来的备份点上增量备份场景
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args = getRsyncArgs(DataBackupScene::TRY_INC_DATA_BACKUP);
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destPath += BACKUP_SNAPSHOTS_PATH;
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destPath += "/";
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destPath += m_backupWrapper.m_uuid;
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destPath += "/data/";
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} else {
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// 全量备份场景
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args = getRsyncArgs(DataBackupScene::TRY_DATA_BACKUP);
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destPath += CHECK_PATH;
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}
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// 拼接备份源路径和目标路径
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QString srcPath = Utils::getSysRootPath();
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srcPath += "/";
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srcPath.replace("//", "/");
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args << srcPath;
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destPath.replace("//", "/");
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args << destPath;
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Utils::mkpath(destPath);
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connect(m_calc, &CalcBackupSize::finished, this, &DataBackupProxy::checkFreeCapacity);
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m_calc->start(args, false);
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}
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/**
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* @brief 根据场景获取rsync命令参数
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* @param scene，场景
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* @return rsync的参数信息
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*/
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QStringList DataBackupProxy::getRsyncArgs(DataBackupScene scene)
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{
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QStringList args;
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QString backupFile = "/tmp/.backup.user";
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Utils::writeFileByLines(backupFile, m_backupWrapper.m_backupPaths);
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switch (scene) {
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case DataBackupScene::DATA_BACKUP :
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args << "-avAHXr";
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args << "--info=progress2";
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args << "--no-inc-recursive";
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args << "--ignore-missing-args";
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args << "--delete";
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args << "--files-from" << backupFile;
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break ;
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case DataBackupScene::INC_DATA_BACKUP :
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args << "-avAHXr";
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args << "--info=progress2";
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args << "--no-inc-recursive";
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args << "--ignore-missing-args";
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args << "--delete";
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args << "--files-from" << backupFile;
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break ;
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case DataBackupScene::TRY_DATA_BACKUP :
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args << "-aAHXrn";
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args << "--stats";
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args << "--ignore-missing-args";
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args << "--files-from" << backupFile;
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break ;
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case DataBackupScene::TRY_INC_DATA_BACKUP :
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args << "-aAHXrn";
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args << "--stats";
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args << "--ignore-missing-args";
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args << "--delete";
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args << "--files-from" << backupFile;
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break ;
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default:
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return args;
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}
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return args;
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}
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/**
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* @brief 备份
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*/
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void DataBackupProxy::doBackup()
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{
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qDebug() << "DataBackupProxy::doBackup invoke begin";
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// 准备
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if (!doPrepare())
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return ;
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// 启动数据备份
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backupData();
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qDebug() << "DataBackupProxy::doBackup invoke end";
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}
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/**
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* @brief 备份准备
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* @return true,准备成功；false，准备失败
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*/
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bool DataBackupProxy::doPrepare()
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{
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qDebug() << "DataBackupProxy::doPrepare invoke begin";
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m_bSuccess = false;
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// 1、设置当前备份的Uuid
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if (m_backupWrapper.m_uuid.isEmpty()) {
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// 新增备份点，不指定uuid的场景
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m_curUuid += Utils::createUuid();
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} else {
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// 指定uuid备份的场景
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m_curUuid = m_backupWrapper.m_uuid;
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}
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// 2、准备备份目录及文件
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m_destPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_curUuid + "/data";
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m_destPath.replace("//", "/");
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if (!Utils::mkpath(m_destPath)) {
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emit checkResult(int(BackupResult::WRITE_BACKUP_PATHS_TO_USER_FAILED));
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qCritical() << QString("mkdir %1 failed !").arg(m_destPath) ;
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return false;
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}
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m_userFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_curUuid + "/" + PATHS_USER_FILE;
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m_userFile.replace("//", "/");
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if (!Utils::writeFileByLines(m_userFile, m_backupWrapper.m_backupPaths)) {
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emit checkResult(int(BackupResult::WRITE_BACKUP_PATHS_TO_USER_FAILED));
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qCritical() << QString("create file %1 failed !").arg(m_userFile) ;
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return false;
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}
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m_excludeUserFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_curUuid + "/" + EXCLUDE_PATHS_USER_FILE;
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m_excludeUserFile.replace("//", "/");
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if (!Utils::writeFileByLines(m_excludeUserFile, m_backupWrapper.m_backupExcludePaths)) {
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emit checkResult(int(BackupResult::WRITE_BACKUP_PATHS_TO_USER_FAILED));
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qCritical() << QString("create file %1 failed !").arg(m_excludeUserFile) ;
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return false;
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}
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// 3、记录/backup/snapshots/backuplist.xml文件
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if (!recordBackupPoint()) {
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qCritical() << "add or update item to backuplist.xml failed !";
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return false;
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}
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qDebug() << "DataBackupProxy::doPrepare invoke end";
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return true;
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}
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/**
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* @brief 记录/backup/snapshots/backuplist.xml文件
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* @return true-成功；false-失败
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*/
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bool DataBackupProxy::recordBackupPoint()
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{
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m_backupPoint.m_backupName = m_backupWrapper.m_backupName;
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m_backupPoint.m_uuid = m_curUuid;
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m_backupPoint.m_iPosition = m_backupWrapper.m_iPosition;
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m_backupPoint.m_type = m_backupWrapper.m_type;
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m_backupPoint.m_size = Utils::StringBySize(m_size);
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m_backupPoint.m_time = QDateTime::currentDateTime().toString("yy-MM-dd hh:mm:ss");
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m_backupPoint.m_state = BACKUP_PARSE_STATE_FAIL_STRTING;
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if (0 < m_backupWrapper.m_frontUid)
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m_backupPoint.m_userId = QString::number(m_backupWrapper.m_frontUid);
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m_backupPoint.m_os = SystemInfo::m_os;
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m_backupPoint.m_arch = SystemInfo::m_arch;
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m_backupPoint.m_archdetect = SystemInfo::m_archDetect;
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QString xmlPath = Utils::getSysRootPath() + BACKUP_XML_PATH;
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xmlPath.replace("//", "/");
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ParseBackupList parse(xmlPath);
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if (m_backupWrapper.m_bIncrement) {
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if (parse.updateItem(m_backupPoint) != ParseBackupList::SUCCESS) {
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emit checkResult(int(BackupResult::WRITE_STORAGEINFO_UPDATE_ITEM_FAIL));
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return false;
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}
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} else {
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if (parse.addItem(m_backupPoint) != ParseBackupList::SUCCESS) {
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emit checkResult(int(BackupResult::WRITE_STORAGEINFO_ADD_ITEM_FAIL));
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return false;
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}
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}
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return true;
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}
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/**
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* @brief 备份系统
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* @return true，备份成功；false，备份失败
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*/
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bool DataBackupProxy::backupData()
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{
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qDebug() << "DataBackupProxy::backupData invoke begin";
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QStringList args;
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if (m_backupWrapper.m_bIncrement) {
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// 在原来的备份点上增量备份场景
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args = getRsyncArgs(DataBackupScene::INC_DATA_BACKUP);
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} else {
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// 全量备份场景
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args = getRsyncArgs(DataBackupScene::DATA_BACKUP);
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}
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// 拼接备份源路径和目标路径
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QString srcPath = Utils::getSysRootPath();
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srcPath += "/";
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srcPath.replace("//", "/");
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args << srcPath;
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QString destPath = m_destPath + "/";
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destPath.replace("//", "/");
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args << destPath;
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m_p = new RsyncPathToDirProcess(this);
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connect(m_p, &RsyncPathToDirProcess::progress, this, &DataBackupProxy::progress);
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connect(m_p, &RsyncPathToDirProcess::finished, this, [&](bool result) {
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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_isFinished = true;
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if (result) {
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m_backupPoint.m_state = BACKUP_PARSE_STATE_SUCCESS_STRTING;
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m_backupPoint.m_size = Utils::StringBySize(Utils::getDirOrFileSize(m_destPath));
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QString xmlPath = Utils::getSysRootPath() + BACKUP_XML_PATH;
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xmlPath.replace("//", "/");
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ParseBackupList parse(xmlPath);
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parse.updateItem(m_backupPoint);
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// Utils::writeBackupLog(time + "," + m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ","+ m_backupWrapper.m_note + "," + m_backupPoint.m_size+ "," + QString::number(m_backupWrapper.m_frontUid));
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Utils::writeBackupLog(m_backupPoint.m_time + ","
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+ m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ","
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+ m_backupWrapper.m_note + "," + m_backupPoint.m_size
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+ "," + QString::number(m_backupWrapper.m_frontUid)
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+ "," + m_backupWrapper.m_backupName);
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Utils::update_backup_unique_settings(m_curUuid, m_backupPoint.m_backupName);
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m_bSuccess = true;
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}
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emit this->workResult(result);
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});
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m_p->start(args, false);
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qDebug() << "DataBackupProxy::backupData invoke end";
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return true;
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}
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