Alexander Afanasyev
102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (c) 2014 Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the 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 along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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**/
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#include "segment-publisher.hpp"
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#include "core/logger.hpp"
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#include "face/face.hpp"
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#include <ndn-cxx/util/time.hpp>
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namespace nfd {
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NFD_LOG_INIT("SegmentPublisher");
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SegmentPublisher::SegmentPublisher(shared_ptr<AppFace> face,
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const Name& prefix)
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: m_face(face)
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, m_prefix(prefix)
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{
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}
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SegmentPublisher::~SegmentPublisher()
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{
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}
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void
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SegmentPublisher::publish()
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{
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Name segmentPrefix(m_prefix);
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segmentPrefix.appendVersion();
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static const size_t MAX_SEGMENT_SIZE = MAX_NDN_PACKET_SIZE >> 1;
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ndn::EncodingBuffer buffer;
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generate(buffer);
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const uint8_t* rawBuffer = buffer.buf();
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const uint8_t* segmentBegin = rawBuffer;
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const uint8_t* end = rawBuffer + buffer.size();
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uint64_t segmentNo = 0;
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while (segmentBegin < end)
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{
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const uint8_t* segmentEnd = segmentBegin + MAX_SEGMENT_SIZE;
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if (segmentEnd > end)
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{
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segmentEnd = end;
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}
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Name segmentName(segmentPrefix);
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segmentName.appendSegment(segmentNo);
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shared_ptr<Data> data(make_shared<Data>(segmentName));
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data->setContent(segmentBegin, segmentEnd - segmentBegin);
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segmentBegin = segmentEnd;
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if (segmentBegin >= end)
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{
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NFD_LOG_DEBUG("final block is " << segmentNo);
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data->setFinalBlockId(segmentName[-1]);
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}
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NFD_LOG_DEBUG("publishing segment #" << segmentNo);
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publishSegment(data);
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segmentNo++;
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}
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}
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void
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SegmentPublisher::publishSegment(shared_ptr<Data>& data)
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{
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m_face->sign(*data);
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m_face->put(*data);
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}
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} // namespace nfd
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