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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/**
* Copyright (C) 2013 Regents of the University of California.
* See COPYING for copyright and distribution information.
*/
#ifndef NDN_MANAGEMENT_CONTROL_RESPONSE_HPP
#define NDN_MANAGEMENT_CONTROL_RESPONSE_HPP
#include "../encoding/block.hpp"
#include "../encoding/tlv-nfd.hpp"
namespace ndn {
namespace nfd {
/**
* @brief Class defining abstraction of ControlResponse for NFD Control Protocol
*
* @see http://redmine.named-data.net/projects/nfd/wiki/ControlCommand
*/
class ControlResponse {
public:
struct Error : public Tlv::Error { Error(const std::string &what) : Tlv::Error(what) {} };
ControlResponse()
: m_code(200)
{
}
ControlResponse(uint32_t code, const std::string &text)
: m_code(code)
, m_text(text)
{
}
ControlResponse(const Block& block)
{
wireDecode(block);
}
inline uint32_t
getCode() const;
inline void
setCode(uint32_t code);
inline const std::string &
getText() const;
inline void
setText(const std::string &text);
inline const Block&
getBody() const;
inline void
setBody(const Block& body);
inline const Block&
wireEncode() const;
inline void
wireDecode(const Block &block);
protected:
uint32_t m_code;
std::string m_text;
Block m_body;
mutable Block m_wire;
};
inline uint32_t
ControlResponse::getCode() const
{
return m_code;
}
inline void
ControlResponse::setCode(uint32_t code)
{
m_code = code;
m_wire.reset();
}
inline const std::string &
ControlResponse::getText() const
{
return m_text;
}
inline void
ControlResponse::setText(const std::string &text)
{
m_text = text;
m_wire.reset();
}
inline const Block&
ControlResponse::getBody() const
{
return m_body;
}
inline void
ControlResponse::setBody(const Block& body)
{
m_body = body;
m_body.encode(); // will do nothing if already encoded
m_wire.reset();
}
inline const Block&
ControlResponse::wireEncode() const
{
if (m_wire.hasWire())
return m_wire;
m_wire = Block(tlv::nfd::ControlResponse);
m_wire.push_back
(nonNegativeIntegerBlock(tlv::nfd::StatusCode, m_code));
m_wire.push_back
(dataBlock(tlv::nfd::StatusText, m_text.c_str(), m_text.size()));
if (m_body.hasWire())
{
m_wire.push_back(m_body);
}
m_wire.encode();
return m_wire;
}
inline void
ControlResponse::wireDecode(const Block &wire)
{
m_wire = wire;
m_wire.parse();
if (m_wire.type() != tlv::nfd::ControlResponse)
throw Error("Requested decoding of ControlResponse, but Block is of different type");
Block::element_const_iterator val = m_wire.elements_begin();
if (val == m_wire.elements_end() ||
val->type() != tlv::nfd::StatusCode)
{
throw Error("Incorrect ControlResponse format (StatusCode missing or not the first item)");
}
m_code = readNonNegativeInteger(*val);
++val;
if (val == m_wire.elements_end() ||
val->type() != tlv::nfd::StatusText)
{
throw Error("Incorrect ControlResponse format (StatusText missing or not the second item)");
}
m_text.assign(reinterpret_cast<const char*>(val->value()), val->value_size());
++val;
if (val != m_wire.elements_end())
m_body = *val;
else
m_body = Block();
}
inline std::ostream&
operator << (std::ostream &os, const ControlResponse &status)
{
os << status.getCode() << " " << status.getText();
return os;
}
} // namespace nfd
} // namespace ndn
#endif // NDN_MANAGEMENT_CONTROL_RESPONSE_HPP