cs.hpp

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

#include "cs-policy.hpp"
#include "cs-internal.hpp"
#include "cs-entry-impl.hpp"
#include <ndn-cxx/util/signal.hpp>
#include <boost/iterator/transform_iterator.hpp>

namespace nfd {
namespace cs {

unique_ptr<Policy>
makeDefaultPolicy();

class Cs : noncopyable
{
public:
  explicit
  Cs(size_t nMaxPackets = 10, unique_ptr<Policy> policy = makeDefaultPolicy());

  void
  insert(const Data& data, bool isUnsolicited = false);

  typedef std::function<void(const Interest&, const Data& data)> HitCallback;
  typedef std::function<void(const Interest&)> MissCallback;

  void
  find(const Interest& interest,
       const HitCallback& hitCallback,
       const MissCallback& missCallback) const;

  void
  erase(const Name& exactName)
  {
    BOOST_ASSERT_MSG(false, "not implemented");
  }

  void
  setLimit(size_t nMaxPackets);

  size_t
  getLimit() const;

  void
  setPolicy(unique_ptr<Policy> policy);

  Policy*
  getPolicy() const
  {
    return m_policy.get();
  }

  size_t
  size() const
  {
    return m_table.size();
  }

PUBLIC_WITH_TESTS_ELSE_PRIVATE:
  void
  dump();

public: // enumeration
  struct EntryFromEntryImpl
  {
    typedef const Entry& result_type;

    const Entry&
    operator()(const EntryImpl& entry) const
    {
      return entry;
    }
  };

  typedef boost::transform_iterator<EntryFromEntryImpl, iterator, const Entry&> const_iterator;

  const_iterator
  begin() const
  {
    return boost::make_transform_iterator(m_table.begin(), EntryFromEntryImpl());
  }

  const_iterator
  end() const
  {
    return boost::make_transform_iterator(m_table.end(), EntryFromEntryImpl());
  }

private: // find
  iterator
  findLeftmost(const Interest& interest, iterator left, iterator right) const;

  iterator
  findRightmost(const Interest& interest, iterator first, iterator last) const;

  iterator
  findRightmostAmongExact(const Interest& interest, iterator first, iterator last) const;

  void
  setPolicyImpl(unique_ptr<Policy> policy);

private:
  Table m_table;
  unique_ptr<Policy> m_policy;
  ndn::util::signal::ScopedConnection m_beforeEvictConnection;
};

} // namespace cs

using cs::Cs;

} // namespace nfd

#endif // NFD_DAEMON_TABLE_CS_HPP