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Alexander Afanasyev4abdbf12014-08-11 12:48:54 -07001/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/**
3 * Copyright (c) 2013-2014 Regents of the University of California.
4 *
5 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
6 *
7 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8 * terms of the GNU Lesser General Public License as published by the Free Software
9 * Foundation, either version 3 of the License, or (at your option) any later version.
10 *
11 * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14 *
15 * You should have received copies of the GNU General Public License and GNU Lesser
16 * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17 * <http://www.gnu.org/licenses/>.
18 *
19 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20 */
21
22/**
23 * Original copyright notice from NFD:
24 *
25 * Copyright (c) 2014, Regents of the University of California,
26 * Arizona Board of Regents,
27 * Colorado State University,
28 * University Pierre & Marie Curie, Sorbonne University,
29 * Washington University in St. Louis,
30 * Beijing Institute of Technology,
31 * The University of Memphis
32 *
33 * This file is part of NFD (Named Data Networking Forwarding Daemon).
34 * See AUTHORS.md for complete list of NFD authors and contributors.
35 *
36 * NFD is free software: you can redistribute it and/or modify it under the terms
37 * of the GNU General Public License as published by the Free Software Foundation,
38 * either version 3 of the License, or (at your option) any later version.
39 *
40 * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
41 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
42 * PURPOSE. See the GNU General Public License for more details.
43 *
44 * You should have received a copy of the GNU General Public License along with
45 * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
46 */
47
48#ifndef NDN_UTIL_NOTIFICATION_STREAM_HPP
49#define NDN_UTIL_NOTIFICATION_STREAM_HPP
50
51#include "../name.hpp"
52#include "../face.hpp"
53#include "../security/key-chain.hpp"
54
55#include "concepts.hpp"
56
57namespace ndn {
58
Alexander Afanasyev4abdbf12014-08-11 12:48:54 -070059namespace util {
60
61/** \brief provides a publisher of Notification Stream
62 * \sa http://redmine.named-data.net/projects/nfd/wiki/Notification
63 */
64template<typename Notification>
65class NotificationStream : noncopyable
66{
67public:
68 BOOST_CONCEPT_ASSERT((WireEncodable<Notification>));
69
70 NotificationStream(Face& face, const Name& prefix, KeyChain& keyChain)
71 : m_face(face)
72 , m_prefix(prefix)
73 , m_keyChain(keyChain)
74 , m_sequenceNo(0)
75 {
76 }
77
78 virtual
79 ~NotificationStream()
80 {
81 }
82
83 void
84 postNotification(const Notification& notification)
85 {
86 Name dataName = m_prefix;
87 dataName.appendSequenceNumber(m_sequenceNo);
88
89 shared_ptr<Data> data = make_shared<Data>(dataName);
90 data->setContent(notification.wireEncode());
91 data->setFreshnessPeriod(time::seconds(1));
92
93 m_keyChain.sign(*data);
94 m_face.put(*data);
95
96 ++m_sequenceNo;
97 }
98
99private:
100 Face& m_face;
101 const Name m_prefix;
102 KeyChain& m_keyChain;
103 uint64_t m_sequenceNo;
104};
105
106} // namespace util
107} // namespace ndn
108
109#endif // NDN_UTIL_NOTIFICATION_STREAM_HPP