mirror of
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338 lines
12 KiB
C++
338 lines
12 KiB
C++
/*
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* Copyright (C) by Klaas Freitag <freitag@owncloud.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SYNCJOURNALDB_H
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#define SYNCJOURNALDB_H
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#include <QObject>
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#include <qmutex.h>
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#include <QDateTime>
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#include <QHash>
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#include <functional>
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#include "common/utility.h"
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#include "common/ownsql.h"
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#include "common/syncjournalfilerecord.h"
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namespace OCC {
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class SyncJournalFileRecord;
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/**
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* @brief Class that handles the sync database
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*
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* This class is thread safe. All public functions lock the mutex.
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* @ingroup libsync
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*/
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class OCSYNC_EXPORT SyncJournalDb : public QObject
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{
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Q_OBJECT
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public:
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explicit SyncJournalDb(const QString &dbFilePath, QObject *parent = 0);
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virtual ~SyncJournalDb();
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/// Create a journal path for a specific configuration
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static QString makeDbName(const QString &localPath,
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const QUrl &remoteUrl,
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const QString &remotePath,
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const QString &user);
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/// Migrate a csync_journal to the new path, if necessary. Returns false on error
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static bool maybeMigrateDb(const QString &localPath, const QString &absoluteJournalPath);
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// To verify that the record could be found check with SyncJournalFileRecord::isValid()
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bool getFileRecord(const QString &filename, SyncJournalFileRecord *rec) { return getFileRecord(filename.toUtf8(), rec); }
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bool getFileRecord(const QByteArray &filename, SyncJournalFileRecord *rec);
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bool getFileRecordByE2eMangledName(const QString &mangledName, SyncJournalFileRecord *rec);
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bool getFileRecordByInode(quint64 inode, SyncJournalFileRecord *rec);
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bool getFileRecordsByFileId(const QByteArray &fileId, const std::function<void(const SyncJournalFileRecord &)> &rowCallback);
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bool getFilesBelowPath(const QByteArray &path, const std::function<void(const SyncJournalFileRecord&)> &rowCallback);
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bool setFileRecord(const SyncJournalFileRecord &record);
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/// Like setFileRecord, but preserves checksums
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bool setFileRecordMetadata(const SyncJournalFileRecord &record);
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bool deleteFileRecord(const QString &filename, bool recursively = false);
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bool updateFileRecordChecksum(const QString &filename,
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const QByteArray &contentChecksum,
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const QByteArray &contentChecksumType);
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bool updateLocalMetadata(const QString &filename,
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qint64 modtime, quint64 size, quint64 inode);
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bool exists();
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void walCheckpoint();
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QString databaseFilePath() const;
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static qint64 getPHash(const QByteArray &);
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void setErrorBlacklistEntry(const SyncJournalErrorBlacklistRecord &item);
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void wipeErrorBlacklistEntry(const QString &file);
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void wipeErrorBlacklistCategory(SyncJournalErrorBlacklistRecord::Category category);
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int wipeErrorBlacklist();
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int errorBlackListEntryCount();
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struct DownloadInfo
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{
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DownloadInfo()
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: _errorCount(0)
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, _valid(false)
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{
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}
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QString _tmpfile;
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QByteArray _etag;
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int _errorCount;
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bool _valid;
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};
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struct UploadInfo
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{
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UploadInfo()
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: _chunk(0)
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, _transferid(0)
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, _size(0)
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, _errorCount(0)
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, _valid(false)
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{
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}
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int _chunk;
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int _transferid;
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quint64 _size; //currently unused
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qint64 _modtime;
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int _errorCount;
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bool _valid;
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QByteArray _contentChecksum;
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/**
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* Returns true if this entry refers to a chunked upload that can be continued.
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* (As opposed to a small file transfer which is stored in the db so we can detect the case
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* when the upload succeeded, but the connection was dropped before we got the answer)
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*/
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bool isChunked() const { return _transferid != 0; }
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};
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struct PollInfo
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{
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QString _file;
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QString _url;
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qint64 _modtime;
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};
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DownloadInfo getDownloadInfo(const QString &file);
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void setDownloadInfo(const QString &file, const DownloadInfo &i);
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QVector<DownloadInfo> getAndDeleteStaleDownloadInfos(const QSet<QString> &keep);
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int downloadInfoCount();
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UploadInfo getUploadInfo(const QString &file);
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void setUploadInfo(const QString &file, const UploadInfo &i);
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// Return the list of transfer ids that were removed.
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QVector<uint> deleteStaleUploadInfos(const QSet<QString> &keep);
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SyncJournalErrorBlacklistRecord errorBlacklistEntry(const QString &);
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bool deleteStaleErrorBlacklistEntries(const QSet<QString> &keep);
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void avoidRenamesOnNextSync(const QString &path) { avoidRenamesOnNextSync(path.toUtf8()); }
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void avoidRenamesOnNextSync(const QByteArray &path);
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void setPollInfo(const PollInfo &);
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QVector<PollInfo> getPollInfos();
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enum SelectiveSyncListType {
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/** The black list is the list of folders that are unselected in the selective sync dialog.
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* For the sync engine, those folders are considered as if they were not there, so the local
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* folders will be deleted */
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SelectiveSyncBlackList = 1,
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/** When a shared folder has a size bigger than a configured size, it is by default not sync'ed
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* Unless it is in the white list, in which case the folder is sync'ed and all its children.
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* If a folder is both on the black and the white list, the black list wins */
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SelectiveSyncWhiteList = 2,
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/** List of big sync folders that have not been confirmed by the user yet and that the UI
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* should notify about */
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SelectiveSyncUndecidedList = 3
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};
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/* return the specified list from the database */
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QStringList getSelectiveSyncList(SelectiveSyncListType type, bool *ok);
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/* Write the selective sync list (remove all other entries of that list */
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void setSelectiveSyncList(SelectiveSyncListType type, const QStringList &list);
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/**
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* Make sure that on the next sync fileName and its parents are discovered from the server.
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*
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* That means its metadata and, if it's a directory, its direct contents.
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*
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* Specifically, etag (md5 field) of fileName and all its parents are set to _invalid_.
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* That causes a metadata difference and a resulting discovery from the remote for the
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* affected folders.
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*
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* Since folders in the selective sync list will not be rediscovered (csync_ftw,
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* _csync_detect_update skip them), the _invalid_ marker will stay. And any
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* child items in the db will be ignored when reading a remote tree from the database.
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*
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* Any setFileRecord() call to affected directories before the next sync run will be
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* adjusted to retain the invalid etag via _etagStorageFilter.
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*/
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void avoidReadFromDbOnNextSync(const QString &fileName) { avoidReadFromDbOnNextSync(fileName.toUtf8()); }
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void avoidReadFromDbOnNextSync(const QByteArray &fileName);
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/**
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* Wipe _etagStorageFilter. Also done implicitly on close().
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*/
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void clearEtagStorageFilter();
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/**
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* Ensures full remote discovery happens on the next sync.
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*
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* Equivalent to calling avoidReadFromDbOnNextSync() for all files.
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*/
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void forceRemoteDiscoveryNextSync();
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bool postSyncCleanup(const QSet<QString> &filepathsToKeep,
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const QSet<QString> &prefixesToKeep);
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/* Because sqlite transactions are really slow, we encapsulate everything in big transactions
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* Commit will actually commit the transaction and create a new one.
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*/
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void commit(const QString &context, bool startTrans = true);
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void commitIfNeededAndStartNewTransaction(const QString &context);
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void close();
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/**
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* return true if everything is correct
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*/
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bool isConnected();
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/**
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* Returns the checksum type for an id.
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*/
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QByteArray getChecksumType(int checksumTypeId);
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/**
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* The data-fingerprint used to detect backup
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*/
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void setDataFingerprint(const QByteArray &dataFingerprint);
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QByteArray dataFingerprint();
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// Conflict record functions
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/// Store a new or updated record in the database
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void setConflictRecord(const ConflictRecord &record);
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/// Retrieve a conflict record by path of the file with the conflict tag
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ConflictRecord conflictRecord(const QByteArray &path);
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/// Delete a conflict record by path of the file with the conflict tag
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void deleteConflictRecord(const QByteArray &path);
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/// Return all paths of files with a conflict tag in the name and records in the db
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QByteArrayList conflictRecordPaths();
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/**
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* Delete any file entry. This will force the next sync to re-sync everything as if it was new,
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* restoring everyfile on every remote. If a file is there both on the client and server side,
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* it will be a conflict that will be automatically resolved if the file is the same.
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*/
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void clearFileTable();
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private:
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int getFileRecordCount();
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bool updateDatabaseStructure();
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bool updateMetadataTableStructure();
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bool updateErrorBlacklistTableStructure();
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bool sqlFail(const QString &log, const SqlQuery &query);
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void commitInternal(const QString &context, bool startTrans = true);
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void startTransaction();
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void commitTransaction();
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QVector<QByteArray> tableColumns(const QByteArray &table);
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bool checkConnect();
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// Same as forceRemoteDiscoveryNextSync but without acquiring the lock
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void forceRemoteDiscoveryNextSyncLocked();
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// Returns the integer id of the checksum type
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//
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// Returns 0 on failure and for empty checksum types.
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int mapChecksumType(const QByteArray &checksumType);
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SqlDatabase _db;
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QString _dbFile;
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QMutex _mutex; // Public functions are protected with the mutex.
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int _transaction;
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bool _metadataTableIsEmpty;
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SqlQuery _getFileRecordQuery;
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SqlQuery _getFileRecordQueryByMangledName;
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SqlQuery _getFileRecordQueryByInode;
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SqlQuery _getFileRecordQueryByFileId;
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SqlQuery _getFilesBelowPathQuery;
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SqlQuery _getAllFilesQuery;
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SqlQuery _setFileRecordQuery;
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SqlQuery _setFileRecordChecksumQuery;
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SqlQuery _setFileRecordLocalMetadataQuery;
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SqlQuery _getDownloadInfoQuery;
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SqlQuery _setDownloadInfoQuery;
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SqlQuery _deleteDownloadInfoQuery;
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SqlQuery _getUploadInfoQuery;
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SqlQuery _setUploadInfoQuery;
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SqlQuery _deleteUploadInfoQuery;
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SqlQuery _deleteFileRecordPhash;
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SqlQuery _deleteFileRecordRecursively;
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SqlQuery _getErrorBlacklistQuery;
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SqlQuery _setErrorBlacklistQuery;
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SqlQuery _getSelectiveSyncListQuery;
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SqlQuery _getChecksumTypeIdQuery;
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SqlQuery _getChecksumTypeQuery;
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SqlQuery _insertChecksumTypeQuery;
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SqlQuery _getDataFingerprintQuery;
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SqlQuery _setDataFingerprintQuery1;
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SqlQuery _setDataFingerprintQuery2;
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SqlQuery _getConflictRecordQuery;
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SqlQuery _setConflictRecordQuery;
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SqlQuery _deleteConflictRecordQuery;
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/* Storing etags to these folders, or their parent folders, is filtered out.
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*
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* When avoidReadFromDbOnNextSync() is called some etags to _invalid_ in the
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* database. If this is done during a sync run, a later propagation job might
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* undo that by writing the correct etag to the database instead. This filter
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* will prevent this write and instead guarantee the _invalid_ etag stays in
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* place.
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*
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* The list is cleared on close() (end of sync run) and explicitly with
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* clearEtagStorageFilter() (start of sync run).
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*
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* The contained paths have a trailing /.
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*/
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QList<QByteArray> _etagStorageFilter;
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/** The journal mode to use for the db.
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*
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* Typically WAL initially, but may be set to other modes via environment
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* variable, for specific filesystems, or when WAL fails in a particular way.
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*/
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QByteArray _journalMode;
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};
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bool OCSYNC_EXPORT
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operator==(const SyncJournalDb::DownloadInfo &lhs,
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const SyncJournalDb::DownloadInfo &rhs);
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bool OCSYNC_EXPORT
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operator==(const SyncJournalDb::UploadInfo &lhs,
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const SyncJournalDb::UploadInfo &rhs);
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} // namespace OCC
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#endif // SYNCJOURNALDB_H
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