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103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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* Copyright (C) by Christian Kamm <mail@ckamm.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef LOCALDISCOVERYTRACKER_H
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#define LOCALDISCOVERYTRACKER_H
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#include "owncloudlib.h"
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#include <set>
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#include <QObject>
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#include <QByteArray>
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#include <QSharedPointer>
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namespace OCC {
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class SyncFileItem;
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using SyncFileItemPtr = QSharedPointer<SyncFileItem>;
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/**
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* @brief Tracks files that must be rediscovered locally
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*
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* It does this by being notified about
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* - modified files (addTouchedPath(), from file watcher)
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* - starting syncs (startSync*())
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* - finished items (slotItemCompleted(), by SyncEngine signal)
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* - finished syncs (slotSyncFinished(), by SyncEngine signal)
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*
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* Then localDiscoveryPaths() can be used to determine paths to rediscover
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* and send to SyncEngine::setLocalDiscoveryOptions().
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*
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* This class is primarily used from Folder and separate primarily for
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* readability and testing purposes.
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*
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* All paths used in this class are expected to be utf8 encoded byte arrays,
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* relative to the folder that is being synced, without a starting slash.
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*
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* @ingroup libsync
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*/
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class OWNCLOUDSYNC_EXPORT LocalDiscoveryTracker : public QObject
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{
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Q_OBJECT
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public:
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LocalDiscoveryTracker();
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/** Adds a path that must be locally rediscovered later.
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*
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* This should be a full relative file path, example:
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* foo/bar/file.txt
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*/
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void addTouchedPath(const QString &relativePath);
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/** Call when a sync run starts that rediscovers all local files */
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void startSyncFullDiscovery();
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/** Call when a sync using localDiscoveryPaths() starts */
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void startSyncPartialDiscovery();
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/** Access list of files that shall be locally rediscovered. */
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const std::set<QString> &localDiscoveryPaths() const;
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public slots:
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/**
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* Success and failure of sync items adjust what the next sync is
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* supposed to do.
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*/
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void slotItemCompleted(const SyncFileItemPtr &item);
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/**
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* When a sync finishes, the lists must be updated
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*/
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void slotSyncFinished(bool success);
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private:
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/**
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* The paths that should be checked by the next local discovery.
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*
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* Mostly a collection of files the filewatchers have reported as touched.
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* Also includes files that have had errors in the last sync run.
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*/
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std::set<QString> _localDiscoveryPaths;
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/**
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* The paths that the current sync run used for local discovery.
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*
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* For failing syncs, this list will be merged into _localDiscoveryPaths
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* again when the sync is done to make sure everything is retried.
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*/
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std::set<QString> _previousLocalDiscoveryPaths;
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};
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} // namespace OCC
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#endif
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