content-store-with-stats.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_CONTENT_STORE_WITH_STATS_H_
#define NDN_CONTENT_STORE_WITH_STATS_H_

#include "ns3/ndnSIM/model/ndn-common.hpp"

#include "content-store-impl.hpp"

#include "../../utils/trie/multi-policy.hpp"
#include "custom-policies/lifetime-stats-policy.hpp"

namespace ns3 {
namespace ndn {
namespace cs {

template<class Policy>
class ContentStoreWithStats
  : public ContentStoreImpl<ndnSIM::
                              multi_policy_traits<boost::mpl::
                                                    vector2<Policy,
                                                            ndnSIM::
                                                              lifetime_stats_policy_traits>>> {
public:
  typedef ContentStoreImpl<ndnSIM::
                             multi_policy_traits<boost::mpl::
                                                   vector2<Policy,
                                                           ndnSIM::lifetime_stats_policy_traits>>>
    super;

  typedef typename super::policy_container::template index<1>::type lifetime_stats_container;

  ContentStoreWithStats()
  {
    // connect traceback to the policy
    super::getPolicy().template get<1>().set_traced_callback(&m_willRemoveEntry);
  }

  static TypeId
  GetTypeId();

  virtual inline void
  Print(std::ostream& os) const;

public:
  typedef void (*RemoveCsEntryCallback)(Ptr<const Entry>, Time);

private:
  static LogComponent g_log; 

  TracedCallback<Ptr<const Entry>, Time> m_willRemoveEntry;
};


template<class Policy>
LogComponent ContentStoreWithStats<Policy>::g_log = LogComponent(("ndn.cs.Stats."
                                                                  + Policy::GetName()).c_str(), __FILE__);

template<class Policy>
TypeId
ContentStoreWithStats<Policy>::GetTypeId()
{
  static TypeId tid =
    TypeId(("ns3::ndn::cs::Stats::" + Policy::GetName()).c_str())
      .SetGroupName("Ndn")
      .SetParent<super>()
      .template AddConstructor<ContentStoreWithStats<Policy>>()

      .AddTraceSource("WillRemoveEntry",
                      "Trace called just before content store entry will be removed",
                      MakeTraceSourceAccessor(&ContentStoreWithStats<Policy>::m_willRemoveEntry),
                      "ns3::ndn::cs::ContentStoreWithStats::RemoveCsEntryCallback")

    // trace stuff here
    ;

  return tid;
}

template<class Policy>
void
ContentStoreWithStats<Policy>::Print(std::ostream& os) const
{
  // const freshness_policy_container &freshness = this->getPolicy ().template
  // get<freshness_policy_container> ();

  for (typename super::policy_container::const_iterator item = this->getPolicy().begin();
       item != this->getPolicy().end(); item++) {
    Time alive = lifetime_stats_container::policy_base::get_time(&(*item)) - Simulator::Now();
    os << item->payload()->GetName() << "(alive: " << alive.ToDouble(Time::S) << "s)" << std::endl;
  }
}

} // namespace cs
} // namespace ndn
} // namespace ns3

#endif // NDN_CONTENT_STORE_IMPL_H_