unsolicited-data-policy.cpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#include "unsolicited-data-policy.hpp"
#include <boost/range/adaptor/map.hpp>
#include <boost/range/algorithm/copy.hpp>

namespace nfd {
namespace fw {

std::ostream&
operator<<(std::ostream& os, UnsolicitedDataDecision d)
{
  switch (d) {
    case UnsolicitedDataDecision::DROP:
      return os << "drop";
    case UnsolicitedDataDecision::CACHE:
      return os << "cache";
  }
  return os << static_cast<int>(d);
}

UnsolicitedDataPolicy::Registry&
UnsolicitedDataPolicy::getRegistry()
{
  static Registry registry;
  return registry;
}

unique_ptr<UnsolicitedDataPolicy>
UnsolicitedDataPolicy::create(const std::string& policyName)
{
  Registry& registry = getRegistry();
  auto i = registry.find(policyName);
  return i == registry.end() ? nullptr : i->second();
}

std::set<std::string>
UnsolicitedDataPolicy::getPolicyNames()
{
  std::set<std::string> policyNames;
  boost::copy(getRegistry() | boost::adaptors::map_keys,
              std::inserter(policyNames, policyNames.end()));
  return policyNames;
}

const std::string DropAllUnsolicitedDataPolicy::POLICY_NAME("drop-all");
NFD_REGISTER_UNSOLICITED_DATA_POLICY(DropAllUnsolicitedDataPolicy);

UnsolicitedDataDecision
DropAllUnsolicitedDataPolicy::decide(const Face& inFace, const Data& data) const
{
  return UnsolicitedDataDecision::DROP;
}

const std::string AdmitLocalUnsolicitedDataPolicy::POLICY_NAME("admit-local");
NFD_REGISTER_UNSOLICITED_DATA_POLICY(AdmitLocalUnsolicitedDataPolicy);

UnsolicitedDataDecision
AdmitLocalUnsolicitedDataPolicy::decide(const Face& inFace, const Data& data) const
{
  if (inFace.getScope() == ndn::nfd::FACE_SCOPE_LOCAL) {
    return UnsolicitedDataDecision::CACHE;
  }
  return UnsolicitedDataDecision::DROP;
}

const std::string AdmitNetworkUnsolicitedDataPolicy::POLICY_NAME("admit-network");
NFD_REGISTER_UNSOLICITED_DATA_POLICY(AdmitNetworkUnsolicitedDataPolicy);

UnsolicitedDataDecision
AdmitNetworkUnsolicitedDataPolicy::decide(const Face& inFace, const Data& data) const
{
  if (inFace.getScope() == ndn::nfd::FACE_SCOPE_NON_LOCAL) {
    return UnsolicitedDataDecision::CACHE;
  }
  return UnsolicitedDataDecision::DROP;
}

const std::string AdmitAllUnsolicitedDataPolicy::POLICY_NAME("admit-all");
NFD_REGISTER_UNSOLICITED_DATA_POLICY(AdmitAllUnsolicitedDataPolicy);

UnsolicitedDataDecision
AdmitAllUnsolicitedDataPolicy::decide(const Face& inFace, const Data& data) const
{
  return UnsolicitedDataDecision::CACHE;
}

} // namespace fw
} // namespace nfd