remote-registrator.hpp

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

#include "rib.hpp"
#include "core/config-file.hpp"
#include "rib-status-publisher.hpp"

#include <unordered_map>
#include <ndn-cxx/security/key-chain.hpp>
#include <ndn-cxx/management/nfd-controller.hpp>
#include <ndn-cxx/management/nfd-control-command.hpp>
#include <ndn-cxx/management/nfd-control-parameters.hpp>
#include <ndn-cxx/management/nfd-command-options.hpp>
#include <ndn-cxx/util/signal.hpp>

namespace nfd {
namespace rib {

class RemoteRegistrator : noncopyable
{
public:
  class Error : public std::runtime_error
  {
  public:
    explicit
    Error(const std::string& what)
      : std::runtime_error(what)
    {
    }
  };

  RemoteRegistrator(ndn::nfd::Controller& controller,
                    ndn::KeyChain& keyChain,
                    Rib& rib);

  ~RemoteRegistrator();

  void
  loadConfig(const ConfigSection& configSection);

  void
  enable();

  void
  disable();

  void
  registerPrefix(const Name& prefix);

  void
  unregisterPrefix(const Name& prefix);

private:
  std::pair<Name, size_t>
  findIdentityForRegistration(const Name& prefix);

  void
  startRegistration(const ndn::nfd::ControlParameters& parameters,
                    const ndn::nfd::CommandOptions& options,
                    int nRetries);

  void
  startUnregistration(const ndn::nfd::ControlParameters& parameters,
                      const ndn::nfd::CommandOptions& options,
                      int nRetries);
  void
  onRegSuccess(const ndn::nfd::ControlParameters& parameters,
               const ndn::nfd::CommandOptions& options);

  void
  onRegFailure(uint32_t code, const std::string& reason,
               const ndn::nfd::ControlParameters& parameters,
               const ndn::nfd::CommandOptions& options,
               int nRetries);

  void
  onUnregSuccess(const ndn::nfd::ControlParameters& parameters,
                 const ndn::nfd::CommandOptions& options);

  void
  onUnregFailure(uint32_t code, const std::string& reason,
                 const ndn::nfd::ControlParameters& parameters,
                 const ndn::nfd::CommandOptions& options,
                 int nRetries);

  void
  redoRegistration();

  void
  clearRefreshEvents();

PUBLIC_WITH_TESTS_ELSE_PRIVATE:
  typedef std::unordered_map<Name, scheduler::EventId> RegisteredList;
  typedef RegisteredList::iterator RegisteredEntryIt;
  typedef RegisteredList::value_type RegisteredEntry;
  RegisteredList m_regEntries;

private:
  ndn::nfd::Controller& m_nfdController;
  ndn::KeyChain& m_keyChain;
  Rib& m_rib;
  ndn::util::signal::ScopedConnection m_afterInsertConnection;
  ndn::util::signal::ScopedConnection m_afterEraseConnection;
  ndn::nfd::ControlParameters m_controlParameters;
  ndn::nfd::CommandOptions m_commandOptions;
  time::seconds m_refreshInterval;
  bool m_hasConnectedHub;
  int m_nRetries;

  static const Name LOCAL_REGISTRATION_PREFIX; // /localhost
  static const Name REMOTE_HUB_PREFIX; // /localhop/nfd
  static const name::Component IGNORE_COMMPONENT; // rib
};

} // namespace rib
} // namespace nfd

#endif // NFD_RIB_REMOTE_REGISTRATOR_HPP