notification-stream.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NFD_CORE_NOTIFICATION_STREAM_HPP
#define NFD_CORE_NOTIFICATION_STREAM_HPP

#include "common.hpp"

#include <ndn-cxx/encoding/encoding-buffer.hpp>
#include <ndn-cxx/security/key-chain.hpp>

namespace nfd {

template <class FaceBase>
class NotificationStream : noncopyable
{
public:
  NotificationStream(FaceBase& face, const Name& prefix, ndn::KeyChain& keyChain)
    : m_face(face)
    , m_prefix(prefix)
    , m_keyChain(keyChain)
    , m_sequenceNo(0)
  {
  }

  virtual
  ~NotificationStream()
  {
  }

  template<typename T> void
  postNotification(const T& 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:
  FaceBase& m_face;
  const Name m_prefix;
  ndn::KeyChain& m_keyChain;
  uint64_t m_sequenceNo;
};

} // namespace nfd

#endif // NFD_CORE_NOTIFICATION_STREAM_HPP