management: Implementing ChannelStatus and StrategyChoice dataset abstractions
Change-Id: I5122239dbc8b9316d6753ab22f0a303f54005476
Refs: #1625
diff --git a/src/management/nfd-strategy-choice.hpp b/src/management/nfd-strategy-choice.hpp
new file mode 100644
index 0000000..3f9fa8c
--- /dev/null
+++ b/src/management/nfd-strategy-choice.hpp
@@ -0,0 +1,165 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/**
+ * Copyright (c) 2013-2014, Regents of the University of California.
+ * All rights reserved.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ *
+ * This file licensed under New BSD License. See COPYING for detailed information about
+ * ndn-cxx library copyright, permissions, and redistribution restrictions.
+ */
+
+#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