mirror of https://github.com/aria2/aria2
293 lines
9.2 KiB
C++
293 lines
9.2 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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#ifndef D_UNKNOWN_LENGTH_PIECE_STORAGE_H
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#define D_UNKNOWN_LENGTH_PIECE_STORAGE_H
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#include "FatalException.h"
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#include "PieceStorage.h"
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namespace aria2 {
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class Option;
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class DownloadContext;
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class DiskWriterFactory;
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class DirectDiskAdaptor;
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class BitfieldMan;
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class UnknownLengthPieceStorage : public PieceStorage {
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private:
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std::shared_ptr<DownloadContext> downloadContext_;
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std::shared_ptr<DirectDiskAdaptor> diskAdaptor_;
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std::shared_ptr<DiskWriterFactory> diskWriterFactory_;
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int64_t totalLength_;
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std::unique_ptr<BitfieldMan> bitfield_;
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bool downloadFinished_;
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std::shared_ptr<Piece> piece_;
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void createBitfield();
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public:
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UnknownLengthPieceStorage(
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const std::shared_ptr<DownloadContext>& downloadContext);
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virtual ~UnknownLengthPieceStorage();
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#ifdef ENABLE_BITTORRENT
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/**
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* Returns true if the peer has a piece that localhost doesn't have.
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* Otherwise returns false.
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*/
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virtual bool
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hasMissingPiece(const std::shared_ptr<Peer>& peer) CXX11_OVERRIDE;
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virtual void getMissingPiece(std::vector<std::shared_ptr<Piece>>& pieces,
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size_t minMissingBlocks,
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const std::shared_ptr<Peer>& peer,
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cuid_t cuid) CXX11_OVERRIDE;
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virtual void getMissingPiece(std::vector<std::shared_ptr<Piece>>& pieces,
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size_t minMissingBlocks,
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const std::shared_ptr<Peer>& peer,
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const std::vector<size_t>& excludedIndexes,
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cuid_t cuid) CXX11_OVERRIDE;
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virtual void getMissingFastPiece(std::vector<std::shared_ptr<Piece>>& pieces,
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size_t minMissingBlocks,
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const std::shared_ptr<Peer>& peer,
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cuid_t cuid) CXX11_OVERRIDE;
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virtual void getMissingFastPiece(std::vector<std::shared_ptr<Piece>>& pieces,
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size_t minMissingBlocks,
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const std::shared_ptr<Peer>& peer,
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const std::vector<size_t>& excludedIndexes,
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cuid_t cuid) CXX11_OVERRIDE;
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virtual std::shared_ptr<Piece>
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getMissingPiece(const std::shared_ptr<Peer>& peer,
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cuid_t cuid) CXX11_OVERRIDE;
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virtual std::shared_ptr<Piece>
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getMissingPiece(const std::shared_ptr<Peer>& peer,
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const std::vector<size_t>& excludedIndexes,
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cuid_t cuid) CXX11_OVERRIDE;
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#endif // ENABLE_BITTORRENT
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virtual bool hasMissingUnusedPiece() CXX11_OVERRIDE;
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/**
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* Returns a missing piece if available. Otherwise returns 0;
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*/
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virtual std::shared_ptr<Piece>
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getMissingPiece(size_t minSplitSize, const unsigned char* ignoreBitfield,
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size_t length, cuid_t cuid) CXX11_OVERRIDE;
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/**
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* Returns a missing piece whose index is index.
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* If a piece whose index is index is already acquired or currently used,
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* then returns 0.
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* Also returns 0 if any of missing piece is not available.
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*/
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virtual std::shared_ptr<Piece> getMissingPiece(size_t index,
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cuid_t cuid) CXX11_OVERRIDE;
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/**
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* Returns the piece denoted by index.
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* No status of the piece is changed in this method.
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*/
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virtual std::shared_ptr<Piece> getPiece(size_t index) CXX11_OVERRIDE;
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/**
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* Tells that the download of the specified piece completes.
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*/
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virtual void
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completePiece(const std::shared_ptr<Piece>& piece) CXX11_OVERRIDE;
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/**
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* Tells that the download of the specified piece is canceled.
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*/
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virtual void cancelPiece(const std::shared_ptr<Piece>& piece,
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cuid_t cuid) CXX11_OVERRIDE;
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/**
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* Returns true if the specified piece is already downloaded.
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* Otherwise returns false.
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*/
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virtual bool hasPiece(size_t index) CXX11_OVERRIDE;
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virtual bool isPieceUsed(size_t index) CXX11_OVERRIDE;
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virtual int64_t getTotalLength() CXX11_OVERRIDE { return totalLength_; }
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virtual int64_t getFilteredTotalLength() CXX11_OVERRIDE
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{
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return totalLength_;
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}
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virtual int64_t getCompletedLength() CXX11_OVERRIDE;
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virtual int64_t getFilteredCompletedLength() CXX11_OVERRIDE
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{
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return getCompletedLength();
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}
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virtual void setupFileFilter() CXX11_OVERRIDE {}
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virtual void clearFileFilter() CXX11_OVERRIDE {}
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/**
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* Returns true if download has completed.
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* If file filter is enabled, then returns true if those files have
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* downloaded.
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*/
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virtual bool downloadFinished() CXX11_OVERRIDE { return downloadFinished_; }
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/**
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* Returns true if all files have downloaded.
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* The file filter is ignored.
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*/
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virtual bool allDownloadFinished() CXX11_OVERRIDE
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{
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return downloadFinished();
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}
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/**
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* Initializes DiskAdaptor.
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* TODO add better documentation here.
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*/
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virtual void initStorage() CXX11_OVERRIDE;
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virtual const unsigned char* getBitfield() CXX11_OVERRIDE;
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virtual void setBitfield(const unsigned char* bitfield,
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size_t bitfieldLength) CXX11_OVERRIDE
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{
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}
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virtual size_t getBitfieldLength() CXX11_OVERRIDE;
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virtual bool isSelectiveDownloadingMode() CXX11_OVERRIDE { return false; }
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virtual bool isEndGame() CXX11_OVERRIDE { return false; }
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virtual void enterEndGame() CXX11_OVERRIDE {}
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virtual void setEndGamePieceNum(size_t num) CXX11_OVERRIDE {}
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virtual std::shared_ptr<DiskAdaptor> getDiskAdaptor() CXX11_OVERRIDE;
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virtual WrDiskCache* getWrDiskCache() CXX11_OVERRIDE { return nullptr; }
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virtual void flushWrDiskCacheEntry() CXX11_OVERRIDE {}
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virtual int32_t getPieceLength(size_t index) CXX11_OVERRIDE;
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virtual void advertisePiece(cuid_t cuid, size_t index,
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Timer registeredTime) CXX11_OVERRIDE
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{
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}
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/**
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* indexes is filled with piece index which is not advertised by the
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* caller command and newer than lastHaveIndex.
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*/
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virtual uint64_t
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getAdvertisedPieceIndexes(std::vector<size_t>& indexes, cuid_t myCuid,
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uint64_t lastHaveIndex) CXX11_OVERRIDE
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{
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throw FATAL_EXCEPTION("Not Implemented!");
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}
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virtual void removeAdvertisedPiece(const Timer& expiry) CXX11_OVERRIDE {}
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/**
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* Sets all bits in bitfield to 1.
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*/
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virtual void markAllPiecesDone() CXX11_OVERRIDE;
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virtual void markPiecesDone(int64_t length) CXX11_OVERRIDE;
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virtual void markPieceMissing(size_t index) CXX11_OVERRIDE;
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/**
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* Do nothing because loading in-flight piece is not supported for this
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* class.
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*/
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virtual void addInFlightPiece(
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const std::vector<std::shared_ptr<Piece>>& pieces) CXX11_OVERRIDE
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{
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}
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virtual size_t countInFlightPiece() CXX11_OVERRIDE { return 0; }
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virtual void
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getInFlightPieces(std::vector<std::shared_ptr<Piece>>& pieces) CXX11_OVERRIDE;
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virtual void addPieceStats(size_t index) CXX11_OVERRIDE {}
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virtual void addPieceStats(const unsigned char* bitfield,
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size_t bitfieldLength) CXX11_OVERRIDE
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{
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}
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virtual void subtractPieceStats(const unsigned char* bitfield,
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size_t bitfieldLength) CXX11_OVERRIDE
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{
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}
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virtual void updatePieceStats(const unsigned char* newBitfield,
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size_t newBitfieldLength,
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const unsigned char* oldBitfield) CXX11_OVERRIDE
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{
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}
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virtual size_t getNextUsedIndex(size_t index) CXX11_OVERRIDE { return 0; }
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void setDiskWriterFactory(
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const std::shared_ptr<DiskWriterFactory>& diskWriterFactory);
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virtual void onDownloadIncomplete() CXX11_OVERRIDE {}
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};
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} // namespace aria2
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#endif // D_UNKNOWN_LENGTH_PIECE_STORAGE_H
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