Create a sequential torrent data fetching strategy
Change-Id: I465297bfa3b8c4c8e6e7f7cd028b2d4afeb4e669
Refs: #3507
diff --git a/src/sequential-data-fetcher.hpp b/src/sequential-data-fetcher.hpp
new file mode 100644
index 0000000..ea6ce90
--- /dev/null
+++ b/src/sequential-data-fetcher.hpp
@@ -0,0 +1,104 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+* Copyright (c) 2016 Regents of the University of California.
+*
+* This file is part of the nTorrent codebase.
+*
+* nTorrent is free software: you can redistribute it and/or modify it under the
+* terms of the GNU Lesser General Public License as published by the Free Software
+* Foundation, either version 3 of the License, or (at your option) any later version.
+*
+* nTorrent is distributed in the hope that it will be useful, but WITHOUT ANY
+* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+*
+* You should have received copies of the GNU General Public License and GNU Lesser
+* General Public License along with nTorrent, e.g., in COPYING.md file. If not, see
+* <http://www.gnu.org/licenses/>.
+*
+* See AUTHORS for complete list of nTorrent authors and contributors.
+*/
+
+#ifndef SEQUENTIAL_DATA_FETCHER_HPP
+#define SEQUENTIAL_DATA_FETCHER_HPP
+
+#include "fetching-strategy-manager.hpp"
+#include "torrent-manager.hpp"
+
+#include <ndn-cxx/name.hpp>
+
+namespace ndn {
+namespace ntorrent {
+
+class SequentialDataFetcher : FetchingStrategyManager {
+ public:
+ class Error : public std::runtime_error
+ {
+ public:
+ explicit
+ Error(const std::string& what)
+ : std::runtime_error(what)
+ {
+ }
+ };
+ /**
+ * @brief Create a new SequentialDataFetcher
+ * @param torrentFileName The name of the torrent file
+ * @param dataPath The path that the manager would look for already stored data packets and
+ * will write new data packets
+ */
+ SequentialDataFetcher(const ndn::Name& torrentFileName,
+ const std::string& dataPath);
+
+ ~SequentialDataFetcher();
+
+ /**
+ * @brief Start the sequential data fetcher
+ */
+ void
+ start();
+
+ /**
+ * @brief Pause the sequential data fetcher
+ */
+ void
+ pause();
+
+ /**
+ * @brief Resume the sequential data fetcher
+ */
+ void
+ resume();
+
+ protected:
+ std::vector<ndn::Name>
+ downloadTorrentFile();
+
+ void
+ downloadManifestFiles(const std::vector<ndn::Name>& manifestsName);
+
+ void
+ downloadPackets(const std::vector<ndn::Name>& packetsName);
+
+ void
+ implementSequentialLogic();
+
+ virtual void
+ onDataPacketReceived(const ndn::Data& data);
+
+ virtual void
+ onDataRetrievalFailure(const ndn::Interest& interest, const std::string& errorCode);
+
+ virtual void
+ onManifestReceived(const std::vector<Name>& packetNames);
+
+ private:
+ std::string m_dataPath;
+ ndn::Name m_torrentFileName;
+ shared_ptr<TorrentManager> m_manager;
+};
+
+} // namespace ntorrent
+} // namespace ndn
+
+#endif // SEQUENTIAL_DATA_FETCHER_HPP