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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2014-2017 Regents of the University of California,
* Arizona Board of Regents,
* Colorado State University,
* University Pierre & Marie Curie, Sorbonne University,
* Washington University in St. Louis,
* Beijing Institute of Technology,
* The University of Memphis.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library 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.
*
* ndn-cxx library 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 ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#ifndef NDN_UTIL_NOTIFICATION_STREAM_HPP
#define NDN_UTIL_NOTIFICATION_STREAM_HPP
#include "../name.hpp"
#include "../face.hpp"
#include "../security/v1/key-chain.hpp"
#include "concepts.hpp"
namespace ndn {
namespace util {
/** \brief provides a publisher of Notification Stream
* \sa http://redmine.named-data.net/projects/nfd/wiki/Notification
*/
template<typename Notification>
class NotificationStream : noncopyable
{
public:
BOOST_CONCEPT_ASSERT((WireEncodable<Notification>));
NotificationStream(Face& face, const Name& prefix, KeyChain& keyChain)
: m_face(face)
, m_prefix(prefix)
, m_keyChain(keyChain)
, m_sequenceNo(0)
{
}
virtual
~NotificationStream() = default;
void
postNotification(const Notification& notification)
{
Name dataName = m_prefix;
dataName.appendSequenceNumber(m_sequenceNo);
shared_ptr<Data> data = make_shared<Data>(dataName);
data->setContent(notification.wireEncode());
data->setFreshnessPeriod(time::seconds(1));
m_keyChain.sign(*data);
m_face.put(*data);
++m_sequenceNo;
}
private:
Face& m_face;
const Name m_prefix;
KeyChain& m_keyChain;
uint64_t m_sequenceNo;
};
} // namespace util
} // namespace ndn
#endif // NDN_UTIL_NOTIFICATION_STREAM_HPP