Merge pull request #1779 from sorokin/move-storage

Speedup and fix a bug in torrent moving.

src/qtlibtorrent/qbtsession.cpp

@@ -80,6 +80,7 @@
 
 //initialize static member variables
 QHash<QString, TorrentTempData::TorrentData> TorrentTempData::data = QHash<QString, TorrentTempData::TorrentData>();
+QHash<QString, TorrentMoveState> TorrentTempData::torrentMoveStates = QHash<QString, TorrentMoveState>();
 QHash<QString, bool> HiddenData::data = QHash<QString, bool>();
 unsigned int HiddenData::metadata_counter = 0;
 
@@ -2160,6 +2161,9 @@ void QBtSession::handleAlert(libtorrent::alert* a) {
     case storage_moved_alert::alert_type:
       handleStorageMovedAlert(static_cast<storage_moved_alert*>(a));
       break;
+    case storage_moved_failed_alert::alert_type:
+      handleStorageMovedFailedAlert(static_cast<storage_moved_failed_alert*>(a));
+      break;
     case metadata_received_alert::alert_type:
       handleMetadataReceivedAlert(static_cast<metadata_received_alert*>(a));
       break;
@@ -2401,22 +2405,73 @@ void QBtSession::handleTorrentDeletedAlert(libtorrent::torrent_deleted_alert* p)
 
 void QBtSession::handleStorageMovedAlert(libtorrent::storage_moved_alert* p) {
   QTorrentHandle h(p->handle);
-  if (h.is_valid()) {
-    // Attempt to remove old folder if empty
-    const QString old_save_path = fsutils::fromNativePath(TorrentPersistentData::getPreviousPath(h.hash()));
-    const QString new_save_path = fsutils::fromNativePath(misc::toQStringU(p->path.c_str()));
-    qDebug("Torrent moved from %s to %s", qPrintable(old_save_path), qPrintable(new_save_path));
-    QDir old_save_dir(old_save_path);
-    if (old_save_dir != QDir(defaultSavePath) && old_save_dir != QDir(defaultTempPath)) {
-      qDebug("Attempting to remove %s", qPrintable(old_save_path));
-      QDir().rmpath(old_save_path);
-    }
-    if (defaultTempPath.isEmpty() || !new_save_path.startsWith(defaultTempPath)) {
-      qDebug("Storage has been moved, updating save path to %s", qPrintable(new_save_path));
-      TorrentPersistentData::saveSavePath(h.hash(), new_save_path);
-    }
-    emit savePathChanged(h);
-    //h.force_recheck();
+  if (!h.is_valid()) {
+    qWarning("invalid handle received in storage_moved_alert");
+    return;
+  }
+
+  QString hash = h.hash();
+
+  if (!TorrentTempData::isMoveInProgress(hash)) {
+    qWarning("unexpected storage_moved_alert received");
+    return;
+  }
+
+  QString new_save_path = fsutils::fromNativePath(misc::toQStringU(p->path.c_str()));
+  if (new_save_path != TorrentTempData::getNewPath(hash)) {
+    qWarning("new path received in handleStorageMovedAlert() doesn't match a path in a queue");
+    return;
+  }
+
+  QString oldPath = TorrentTempData::getOldPath(hash);
+
+  qDebug("Torrent is successfully moved from %s to %s", qPrintable(oldPath), qPrintable(new_save_path));
+
+  // Attempt to remove old folder if empty
+  QDir old_save_dir(oldPath);
+  if (old_save_dir != QDir(defaultSavePath) && old_save_dir != QDir(defaultTempPath)) {
+    qDebug("Attempting to remove %s", qPrintable(oldPath));
+    QDir().rmpath(oldPath);
+  }
+  if (defaultTempPath.isEmpty() || !new_save_path.startsWith(defaultTempPath)) {
+    qDebug("Storage has been moved, updating save path to %s", qPrintable(new_save_path));
+    TorrentPersistentData::saveSavePath(h.hash(), new_save_path);
+  }
+  emit savePathChanged(h);
+  //h.force_recheck();
+
+  QString queued = TorrentTempData::getQueuedPath(hash);
+  if (queued != QString()) {
+    TorrentTempData::finishMove(hash);
+    h.move_storage(queued);
+  }
+  else {
+    TorrentTempData::finishMove(hash);
+  }
+}
+
+void QBtSession::handleStorageMovedFailedAlert(libtorrent::storage_moved_failed_alert* p) {
+
+  QTorrentHandle h(p->handle);
+  if (!h.is_valid()) {
+    qWarning("invalid handle received in storage_moved_failed_alert");
+    return;
+  }
+
+  QString hash = h.hash();
+
+  if (!TorrentTempData::isMoveInProgress(hash)) {
+    qWarning("unexpected storage_moved_alert received");
+    return;
+  }
+
+  QString queued = TorrentTempData::getQueuedPath(hash);
+  if (queued != QString()) {
+    TorrentTempData::finishMove(hash);
+    h.move_storage(queued);
+  }
+  else {
+    TorrentTempData::finishMove(hash);
   }
 }
 
@@ -2968,7 +3023,6 @@ void QBtSession::recoverPersistentData(const QString &hash, const std::vector<ch
   QString savePath = fsutils::fromNativePath(QString::fromUtf8(fast.dict_find_string_value("qBt-savePath").c_str()));
   qreal ratioLimit = QString::fromUtf8(fast.dict_find_string_value("qBt-ratioLimit").c_str()).toDouble();
   QDateTime addedDate = QDateTime::fromTime_t(fast.dict_find_int_value("added_time"));
-  QString previousSavePath = QString::fromUtf8(fast.dict_find_string_value("qBt-previousSavePath").c_str());
   QString label = QString::fromUtf8(fast.dict_find_string_value("qBt-label").c_str());
   int priority = fast.dict_find_int_value("qBt-queuePosition");
   bool seedStatus = fast.dict_find_int_value("qBt-seedStatus");
@@ -2976,7 +3030,6 @@ void QBtSession::recoverPersistentData(const QString &hash, const std::vector<ch
   TorrentPersistentData::saveSavePath(hash, savePath);
   TorrentPersistentData::setRatioLimit(hash, ratioLimit);
   TorrentPersistentData::setAddedDate(hash, addedDate);
-  TorrentPersistentData::setPreviousSavePath(hash, previousSavePath);
   TorrentPersistentData::saveLabel(hash, label);
   TorrentPersistentData::savePriority(hash, priority);
   TorrentPersistentData::saveSeedStatus(hash, seedStatus);
@@ -2985,7 +3038,6 @@ void QBtSession::recoverPersistentData(const QString &hash, const std::vector<ch
 void QBtSession::backupPersistentData(const QString &hash, boost::shared_ptr<libtorrent::entry> data) {
   (*data)["qBt-savePath"] = fsutils::fromNativePath(TorrentPersistentData::getSavePath(hash)).toUtf8().constData();
   (*data)["qBt-ratioLimit"] = QString::number(TorrentPersistentData::getRatioLimit(hash)).toUtf8().constData();
-  (*data)["qBt-previousSavePath"] = fsutils::fromNativePath(TorrentPersistentData::getPreviousPath(hash)).toUtf8().constData();
   (*data)["qBt-label"] = TorrentPersistentData::getLabel(hash).toUtf8().constData();
   (*data)["qBt-queuePosition"] = TorrentPersistentData::getPriority(hash);
   (*data)["qBt-seedStatus"] = (int)TorrentPersistentData::isSeed(hash);

src/qtlibtorrent/qbtsession.h

@@ -200,6 +200,7 @@ private:
   void handleFileRenamedAlert(libtorrent::file_renamed_alert* p);
   void handleTorrentDeletedAlert(libtorrent::torrent_deleted_alert* p);
   void handleStorageMovedAlert(libtorrent::storage_moved_alert* p);
+  void handleStorageMovedFailedAlert(libtorrent::storage_moved_failed_alert* p);
   void handleMetadataReceivedAlert(libtorrent::metadata_received_alert* p);
   void handleFileErrorAlert(libtorrent::file_error_alert* p);
   void handleFileCompletedAlert(libtorrent::file_completed_alert* p);

src/qtlibtorrent/qtorrenthandle.cpp

@@ -445,15 +445,28 @@ void QTorrentHandle::set_tracker_login(const QString& username, const QString& p
 }
 
 void QTorrentHandle::move_storage(const QString& new_path) const {
-  if (QDir(save_path()) == QDir(new_path))
-    return;
-
-  TorrentPersistentData::setPreviousSavePath(hash(), save_path());
-  // Create destination directory if necessary
-  // or move_storage() will fail...
-  QDir().mkpath(new_path);
-  // Actually move the storage
-  torrent_handle::move_storage(fsutils::toNativePath(new_path).toUtf8().constData());
+  QString hashstr = hash();
+
+  if (TorrentTempData::isMoveInProgress(hashstr)) {
+    qDebug("enqueue move storage to %s", qPrintable(new_path));
+    TorrentTempData::enqueueMove(hashstr, new_path);
+  }
+  else {
+    QString old_path = save_path();
+
+    qDebug("move storage: %s to %s", qPrintable(old_path), qPrintable(new_path));
+
+    if (QDir(old_path) == QDir(new_path))
+      return;
+
+    TorrentTempData::startMove(hashstr, old_path, new_path);
+
+    // Create destination directory if necessary
+    // or move_storage() will fail...
+    QDir().mkpath(new_path);
+    // Actually move the storage
+    torrent_handle::move_storage(fsutils::toNativePath(new_path).toUtf8().constData());
+  }
 }
 
 bool QTorrentHandle::save_torrent_file(const QString& path) const {

src/torrentpersistentdata.h

@@ -42,6 +42,20 @@
 #include "qinisettings.h"
 #include <QHash>
 
+struct TorrentMoveState
+{
+  TorrentMoveState(QString oldPath, QString newPath)
+    : oldPath(oldPath)
+    , newPath(newPath)
+  {}
+
+  // the moving occurs from oldPath to newPath
+  // queuedPath is where files should be moved to, when current moving is completed
+  QString oldPath;
+  QString newPath;
+  QString queuedPath;
+};
+
 class TorrentTempData {
   // This class stores strings w/o modifying separators
 public:
@@ -101,6 +115,65 @@ public:
     fp = data.value(hash).files_priority;
   }
 
+  static bool isMoveInProgress(const QString &hash) {
+    return torrentMoveStates.find(hash) != torrentMoveStates.end();
+  }
+
+  static void enqueueMove(const QString &hash, const QString &queuedPath) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i == torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return;
+    }
+    i->queuedPath = queuedPath;
+  }
+
+  static void startMove(const QString &hash, const QString &oldPath, const QString& newPath) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i != torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return;
+    }
+
+    torrentMoveStates.insert(hash, TorrentMoveState(oldPath, newPath));
+  }
+
+  static void finishMove(const QString &hash) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i == torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return;
+    }
+    torrentMoveStates.erase(i);
+  }
+
+  static QString getOldPath(const QString &hash) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i == torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return QString();
+    }
+    return i->oldPath;
+  }
+
+  static QString getNewPath(const QString &hash) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i == torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return QString();
+    }
+    return i->newPath;
+  }
+
+  static QString getQueuedPath(const QString &hash) {
+    QHash<QString, TorrentMoveState>::iterator i = torrentMoveStates.find(hash);
+    if (i == torrentMoveStates.end()) {
+      Q_ASSERT(false);
+      return QString();
+    }
+    return i->queuedPath;
+  }
+
 private:
   struct TorrentData {
     TorrentData(): sequential(false), seed(false) {}
@@ -113,6 +186,7 @@ private:
   };
 
   static QHash<QString, TorrentData> data;
+  static QHash<QString, TorrentMoveState> torrentMoveStates;
 };
 
 class HiddenData {
@@ -240,22 +314,6 @@ public:
     return data.value("has_error", false).toBool();
   }
 
-  static void setPreviousSavePath(const QString &hash, const QString &previous_path) {
-    QIniSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent-resume"));
-    QHash<QString, QVariant> all_data = settings.value("torrents").toHash();
-    QHash<QString, QVariant> data = all_data.value(hash).toHash();
-    data["previous_path"] = previous_path;
-    all_data[hash] = data;
-    settings.setValue("torrents", all_data);
-  }
-
-  static QString getPreviousPath(const QString &hash) {
-    QIniSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent-resume"));
-    const QHash<QString, QVariant> all_data = settings.value("torrents").toHash();
-    const QHash<QString, QVariant> data = all_data.value(hash).toHash();
-    return data.value("previous_path").toString();
-  }
-
   static QDateTime getSeedDate(const QString &hash) {
     QIniSettings settings(QString::fromUtf8("qBittorrent"), QString::fromUtf8("qBittorrent-resume"));
     const QHash<QString, QVariant> all_data = settings.value("torrents").toHash();