coordinate-lsa.cpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014-2019, The University of Memphis,
4  * Regents of the University of California,
5  * Arizona Board of Regents.
6  *
7  * This file is part of NLSR (Named-data Link State Routing).
8  * See AUTHORS.md for complete list of NLSR authors and contributors.
9  *
10  * NLSR is free software: you can redistribute it and/or modify it under the terms
11  * of the GNU General Public License as published by the Free Software Foundation,
12  * either version 3 of the License, or (at your option) any later version.
13  *
14  * NLSR is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
16  * PURPOSE. See the GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along with
19  * NLSR, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
20  */
21 
22 #include "coordinate-lsa.hpp"
23 #include "tlv-nlsr.hpp"
24 
25 #include <ndn-cxx/util/concepts.hpp>
26 #include <ndn-cxx/encoding/block-helpers.hpp>
27 
28 namespace nlsr {
29 namespace tlv {
30 
31 BOOST_CONCEPT_ASSERT((ndn::WireEncodable<CoordinateLsa>));
32 BOOST_CONCEPT_ASSERT((ndn::WireDecodable<CoordinateLsa>));
33 static_assert(std::is_base_of<ndn::tlv::Error, CoordinateLsa::Error>::value,
34  "CoordinateLsa::Error must inherit from tlv::Error");
35 
37  : m_hyperbolicRadius(0.0)
38 {
39 }
40 
41 CoordinateLsa::CoordinateLsa(const ndn::Block& block)
42 {
43  wireDecode(block);
44 }
45 
46 template<ndn::encoding::Tag TAG>
47 size_t
48 CoordinateLsa::wireEncode(ndn::EncodingImpl<TAG>& block) const
49 {
50  size_t totalLength = 0;
51 
52  for (auto it = m_hyperbolicAngle.rbegin(); it != m_hyperbolicAngle.rend(); ++it) {
53  totalLength += ndn::encoding::prependDoubleBlock(block, ndn::tlv::nlsr::HyperbolicAngle, *it);
54  }
55 
56  totalLength += ndn::encoding::prependDoubleBlock(block, ndn::tlv::nlsr::HyperbolicRadius, m_hyperbolicRadius);
57 
58  totalLength += m_lsaInfo.wireEncode(block);
59 
60  totalLength += block.prependVarNumber(totalLength);
61  totalLength += block.prependVarNumber(ndn::tlv::nlsr::CoordinateLsa);
62 
63  return totalLength;
64 }
65 
67 
68 const ndn::Block&
70 {
71  if (m_wire.hasWire()) {
72  return m_wire;
73  }
74 
75  ndn::EncodingEstimator estimator;
76  size_t estimatedSize = wireEncode(estimator);
77 
78  ndn::EncodingBuffer buffer(estimatedSize, 0);
79  wireEncode(buffer);
80 
81  m_wire = buffer.block();
82 
83  return m_wire;
84 }
85 
86 void
87 CoordinateLsa::wireDecode(const ndn::Block& wire)
88 {
89  m_hyperbolicRadius = 0.0;
90  m_hyperbolicAngle.clear();
91 
92  m_wire = wire;
93 
94  if (m_wire.type() != ndn::tlv::nlsr::CoordinateLsa) {
95  std::stringstream error;
96  error << "Expected CoordinateLsa Block, but Block is of a different type: #"
97  << m_wire.type();
98  BOOST_THROW_EXCEPTION(Error(error.str()));
99  }
100 
101  m_wire.parse();
102 
103  ndn::Block::element_const_iterator val = m_wire.elements_begin();
104 
105  if (val != m_wire.elements_end() && val->type() == ndn::tlv::nlsr::LsaInfo) {
106  m_lsaInfo.wireDecode(*val);
107  ++val;
108  }
109  else {
110  BOOST_THROW_EXCEPTION(Error("Missing required LsaInfo field"));
111  }
112 
113  if (val != m_wire.elements_end() && val->type() == ndn::tlv::nlsr::HyperbolicRadius) {
114  m_hyperbolicRadius = ndn::encoding::readDouble(*val);
115  ++val;
116  }
117  else {
118  BOOST_THROW_EXCEPTION(Error("Missing required HyperbolicRadius field"));
119  }
120 
121  for (; val != m_wire.elements_end(); ++val) {
122  if (val->type() == ndn::tlv::nlsr::HyperbolicAngle) {
123  m_hyperbolicAngle.push_back(ndn::encoding::readDouble(*val));
124  }
125  }
126 }
127 
128 std::ostream&
129 operator<<(std::ostream& os, const CoordinateLsa& coordinateLsa)
130 {
131  os << "CoordinateLsa("
132  << coordinateLsa.getLsaInfo() << ", "
133  << "HyperbolicRadius: " << coordinateLsa.getHyperbolicRadius() << ", ";
134 
135  os << "HyperbolicAngles: ";
136  int i = 0;
137  for (const auto& value: coordinateLsa.getHyperbolicAngle()) {
138  if (i == 0) {
139  os << value;
140  }
141  else {
142  os << ", " << value;
143  }
144  ++i;
145  }
146  os << ")";
147 
148  return os;
149 }
150 
151 } // namespace tlv
152 } // namespace nlsr
size_t wireEncode(ndn::EncodingImpl< TAG > &block) const
Encodes LSA info using the method in TAG.
Definition: lsa-info.cpp:52
const LsaInfo & getLsaInfo() const
Data abstraction for CoordinateLsa.
const ndn::Block & wireEncode() const
Create a TLV encoding of this object.
NDN_CXX_DEFINE_WIRE_ENCODE_INSTANTIATIONS(AdjacencyLsa)
const std::vector< double > getHyperbolicAngle() const
Copyright (c) 2014-2019, The University of Memphis, Regents of the University of California, Arizona Board of Regents.
double getHyperbolicRadius() const
std::ostream & operator<<(std::ostream &os, const AdjacencyLsa &adjacencyLsa)
void wireDecode(const ndn::Block &wire)
Populate this object by decoding the one contained in the given block.
void wireDecode(const ndn::Block &wire)
Populate this object by decoding the one contained in the given block.
Definition: lsa-info.cpp:96