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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2014 Regents of the University of California.
*
* 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_MANAGEMENT_NFD_STRATEGY_CHOICE_HPP
#define NDN_MANAGEMENT_NFD_STRATEGY_CHOICE_HPP
#include "../encoding/tlv-nfd.hpp"
#include "../encoding/encoding-buffer.hpp"
#include "../encoding/block-helpers.hpp"
#include "../name.hpp"
namespace ndn {
namespace nfd {
/**
* @ingroup management
* @brief represents NFD StrategyChoice dataset
* @sa http://redmine.named-data.net/projects/nfd/wiki/StrategyChoice#Strategy-Choice-Dataset
*/
class StrategyChoice
{
public:
class Error : public tlv::Error
{
public:
explicit
Error(const std::string& what)
: tlv::Error(what)
{
}
};
StrategyChoice()
{
}
explicit
StrategyChoice(const Block& payload)
{
this->wireDecode(payload);
}
template<bool T>
size_t
wireEncode(EncodingImpl<T>& encoder) const;
const Block&
wireEncode() const;
void
wireDecode(const Block& wire);
public: // getters & setters
const Name&
getName() const
{
return m_name;
}
StrategyChoice&
setName(const Name& name)
{
m_wire.reset();
m_name = name;
return *this;
}
const Name&
getStrategy() const
{
return m_strategy;
}
StrategyChoice&
setStrategy(const Name& strategy)
{
m_wire.reset();
m_strategy = strategy;
return *this;
}
private:
Name m_name; // namespace
Name m_strategy; // strategy for the namespace
mutable Block m_wire;
};
template<bool T>
inline size_t
StrategyChoice::wireEncode(EncodingImpl<T>& encoder) const
{
size_t totalLength = 0;
totalLength += prependNestedBlock(encoder, tlv::nfd::Strategy, m_strategy);
totalLength += m_name.wireEncode(encoder);
totalLength += encoder.prependVarNumber(totalLength);
totalLength += encoder.prependVarNumber(tlv::nfd::StrategyChoice);
return totalLength;
}
inline const Block&
StrategyChoice::wireEncode() const
{
if (m_wire.hasWire())
return m_wire;
EncodingEstimator estimator;
size_t estimatedSize = wireEncode(estimator);
EncodingBuffer buffer(estimatedSize, 0);
wireEncode(buffer);
m_wire = buffer.block();
return m_wire;
}
inline void
StrategyChoice::wireDecode(const Block& block)
{
if (block.type() != tlv::nfd::StrategyChoice) {
throw Error("expecting StrategyChoice block");
}
m_wire = block;
m_wire.parse();
Block::element_const_iterator val = m_wire.elements_begin();
if (val != m_wire.elements_end() && val->type() == tlv::Name) {
m_name.wireDecode(*val);
++val;
}
else {
throw Error("missing required Name field");
}
if (val != m_wire.elements_end() && val->type() == tlv::nfd::Strategy) {
val->parse();
if (val->elements().empty()) {
throw Error("expecting Strategy/Name");
}
else {
m_strategy.wireDecode(*val->elements_begin());
}
++val;
}
else {
throw Error("missing required Strategy field");
}
}
} // namespace nfd
} // namespace ndn
#endif // NDN_MANAGEMENT_NFD_STRATEGY_CHOICE_HPP