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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
/**
* Copyright (C) 2013 Regents of the University of California.
*
* @author: Wentao Shang <wentao@cs.ucla.edu>
*
* See COPYING for copyright and distribution information.
*/
#ifndef NDN_MANAGEMENT_NFD_FIB_MANAGEMENT_OPTIONS_HPP
#define NDN_MANAGEMENT_NFD_FIB_MANAGEMENT_OPTIONS_HPP
#include "../encoding/block.hpp"
#include "../encoding/encoding-buffer.hpp"
#include "../encoding/tlv-nfd.hpp"
#include "../name.hpp"
namespace ndn {
namespace nfd {
class FibManagementOptions {
public:
struct Error : public Tlv::Error { Error(const std::string &what) : Tlv::Error(what) {} };
FibManagementOptions ()
: faceId_ (-1)
, cost_ (-1)
{
}
FibManagementOptions(const Block& block)
{
wireDecode(block);
}
const Name&
getName () const
{
return name_;
}
FibManagementOptions&
setName (const Name &name)
{
name_ = name;
wire_.reset ();
return *this;
}
int
getFaceId () const
{
return faceId_;
}
FibManagementOptions&
setFaceId (int faceId)
{
faceId_ = faceId;
wire_.reset ();
return *this;
}
int
getCost () const
{
return cost_;
}
FibManagementOptions&
setCost (int cost)
{
cost_ = cost;
wire_.reset ();
return *this;
}
template<bool T>
size_t
wireEncode(EncodingImpl<T> &block) const;
const Block&
wireEncode () const;
void
wireDecode (const Block &wire);
private:
Name name_;
int faceId_;
int cost_;
//Name strategy_;
//TODO: implement strategy after its use is properly defined
mutable Block wire_;
};
template<bool T>
inline size_t
FibManagementOptions::wireEncode(EncodingImpl<T>& blk) const
{
size_t total_len = 0;
if (cost_ != -1)
{
size_t var_len = blk.prependNonNegativeInteger (cost_);
total_len += var_len;
total_len += blk.prependVarNumber (var_len);
total_len += blk.prependVarNumber (tlv::nfd::Cost);
}
if (faceId_ != -1)
{
size_t var_len = blk.prependNonNegativeInteger (faceId_);
total_len += var_len;
total_len += blk.prependVarNumber (var_len);
total_len += blk.prependVarNumber (tlv::nfd::FaceId);
}
total_len += name_.wireEncode (blk);
total_len += blk.prependVarNumber (total_len);
total_len += blk.prependVarNumber (tlv::nfd::FibManagementOptions);
return total_len;
}
inline const Block&
FibManagementOptions::wireEncode () const
{
if (wire_.hasWire ())
return wire_;
EncodingEstimator estimator;
size_t estimatedSize = wireEncode(estimator);
EncodingBuffer buffer(estimatedSize, 0);
wireEncode(buffer);
wire_ = buffer.block();
return wire_;
}
inline void
FibManagementOptions::wireDecode (const Block &wire)
{
name_.clear ();
faceId_ = -1;
cost_ = -1;
wire_ = wire;
if (wire_.type() != tlv::nfd::FibManagementOptions)
throw Error("Requested decoding of FibManagementOptions, but Block is of different type");
wire_.parse ();
// Name
Block::element_const_iterator val = wire_.find(Tlv::Name);
if (val != wire_.elements_end())
{
name_.wireDecode(*val);
}
// FaceID
val = wire_.find(tlv::nfd::FaceId);
if (val != wire_.elements_end())
{
faceId_ = readNonNegativeInteger(*val);
}
// Cost
val = wire_.find(tlv::nfd::Cost);
if (val != wire_.elements_end())
{
cost_ = readNonNegativeInteger(*val);
}
//TODO: Strategy
}
inline std::ostream&
operator << (std::ostream &os, const FibManagementOptions &option)
{
os << "ForwardingEntry(";
// Name
os << "Prefix: " << option.getName () << ", ";
// FaceID
os << "FaceID: " << option.getFaceId () << ", ";
// Cost
os << "Cost: " << option.getCost ();
os << ")";
return os;
}
} // namespace nfd
} // namespace ndn
#endif // NDN_MANAGEMENT_NFD_FIB_MANAGEMENT_OPTIONS_HPP