blob: fefe30e8ef6ff713659894a61c74a8b98761c8f3 [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#include "segment-publisher.hpp"
#include "common.hpp"
#include "face/face.hpp"
#include <ndn-cpp-dev/util/time.hpp>
namespace nfd {
NFD_LOG_INIT("SegmentPublisher");
SegmentPublisher::SegmentPublisher(shared_ptr<AppFace> face,
const Name& prefix)
: m_face(face)
, m_prefix(prefix)
{
}
SegmentPublisher::~SegmentPublisher()
{
}
void
SegmentPublisher::publish()
{
Name segmentPrefix(m_prefix);
segmentPrefix.appendSegment(time::toUnixTimestamp(time::system_clock::now()).count());
static const size_t MAX_SEGMENT_SIZE = MAX_NDN_PACKET_SIZE >> 1;
ndn::EncodingBuffer buffer;
generate(buffer);
const uint8_t* rawBuffer = buffer.buf();
const uint8_t* segmentBegin = rawBuffer;
const uint8_t* end = rawBuffer + buffer.size();
uint64_t segmentNo = 0;
while (segmentBegin < end)
{
const uint8_t* segmentEnd = segmentBegin + MAX_SEGMENT_SIZE;
if (segmentEnd > end)
{
segmentEnd = end;
}
Name segmentName(segmentPrefix);
segmentName.appendSegment(segmentNo);
shared_ptr<Data> data(make_shared<Data>(segmentName));
data->setContent(segmentBegin, segmentEnd - segmentBegin);
segmentBegin = segmentEnd;
if (segmentBegin >= end)
{
NFD_LOG_DEBUG("final block is " << segmentNo);
data->setFinalBlockId(segmentName[-1]);
}
NFD_LOG_DEBUG("publishing segment #" << segmentNo);
publishSegment(data);
segmentNo++;
}
}
void
SegmentPublisher::publishSegment(shared_ptr<Data>& data)
{
m_face->sign(*data);
m_face->put(*data);
}
} // namespace nfd