mirror of https://github.com/aria2/aria2
101 lines
3.6 KiB
C++
101 lines
3.6 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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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,
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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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "BtDependency.h"
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#include "RequestGroup.h"
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#include "Option.h"
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#include "LogFactory.h"
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#include "Logger.h"
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#include "DefaultBtContext.h"
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#include "RecoverableException.h"
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#include "message.h"
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#include "prefs.h"
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#include "Util.h"
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#include "PieceStorage.h"
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#include "DiskAdaptor.h"
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#include "File.h"
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namespace aria2 {
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BtDependency::BtDependency(const RequestGroupWeakHandle& dependant,
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const RequestGroupHandle& dependee,
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const Option* option):
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_dependant(dependant),
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_dependee(dependee),
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_option(option),
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_logger(LogFactory::getInstance()) {}
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BtDependency::~BtDependency() {}
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bool BtDependency::resolve()
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{
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if(_dependee->getNumCommand() == 0 && _dependee->downloadFinished()) {
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RequestGroupHandle dependee = _dependee;
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// cut reference here
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_dependee.reset();
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DefaultBtContextHandle btContext(new DefaultBtContext());
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try {
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DiskAdaptorHandle diskAdaptor = dependee->getPieceStorage()->getDiskAdaptor();
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diskAdaptor->openExistingFile();
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std::string content = Util::toString(diskAdaptor);
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btContext->loadFromMemory(content,
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File(dependee->getFilePath()).getBasename());
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if(_option->defined(PREF_PEER_ID_PREFIX)) {
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btContext->setPeerIdPrefix(_option->get(PREF_PEER_ID_PREFIX));
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}
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btContext->setDir(_dependant->getDownloadContext()->getDir());
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} catch(RecoverableException& e) {
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_logger->error(EX_EXCEPTION_CAUGHT, e);
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_logger->debug("BtDependency for GID#%d failed. Go without Bt.",
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_dependant->getGID());
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return true;
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}
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_logger->debug("Dependency resolved for GID#%d", _dependant->getGID());
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_dependant->setDownloadContext(btContext);
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btContext->setOwnerRequestGroup(_dependant.get());
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return true;
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} else if(_dependee->getNumCommand() == 0) {
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// _dependee's download failed.
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// cut reference here
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_dependee.reset();
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_logger->debug("BtDependency for GID#%d failed. Go without Bt.",
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_dependant->getGID());
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return true;
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} else {
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return false;
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}
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}
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} // namespace aria2
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