implementation/service_discovery/include/service_discovery_impl.hpp

// Copyright (C) 2014 BMW Group
// Author: Lutz Bichler (lutz.bichler@bmw.de)
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef VSOMEIP_SERVICE_DISCOVERY_IMPL
#define VSOMEIP_SERVICE_DISCOVERY_IMPL

#include <map>
#include <memory>
#include <mutex>
#include <set>

#include <boost/asio/ip/address.hpp>

#include "service_discovery.hpp"
#include "../../routing/include/types.hpp"

namespace vsomeip {

class endpoint;
class serializer;

namespace sd {

class entry_impl;
class eventgroupentry_impl;
class option_impl;
class request;
class serviceentry_impl;
class service_discovery_fsm;
class service_discovery_host;
class subscription;

class service_discovery_impl : public service_discovery,
    public std::enable_shared_from_this<service_discovery_impl> {
 public:
  service_discovery_impl(service_discovery_host *_host);
  virtual ~service_discovery_impl();

  std::shared_ptr<configuration> get_configuration() const;
  boost::asio::io_service & get_io();

  void init();
  void start();
  void stop();

  void request_service(service_t _service, instance_t _instance,
                       major_version_t _major, minor_version_t _minor,
                       ttl_t _ttl);
  void release_service(service_t _service, instance_t _instance);

  void subscribe(service_t _service, instance_t _instance,
                 eventgroup_t _eventgroup, major_version_t _major, ttl_t _ttl);
  void unsubscribe(service_t _service, instance_t _instance,
                   eventgroup_t _eventgroup);

  void send(const std::string &_name, bool _is_announcing);

  void on_message(const byte_t *_data, length_t _length);

 private:
  void insert_option(std::shared_ptr<message_impl> &_message,
                     std::shared_ptr<entry_impl> _entry,
                     const boost::asio::ip::address &_address, uint16_t _port,
                     bool _is_reliable);
  void insert_service_entries(std::shared_ptr<message_impl> &_message,
                              services_t &_services, bool _is_offer);
  void insert_subscription(std::shared_ptr<message_impl> &_message,
                           service_t _service, instance_t _instance,
                           eventgroup_t _eventgroup,
                           std::shared_ptr<subscription> &_subscription,
                           bool _is_subscription);
  void insert_subscription_ack(std::shared_ptr<message_impl> &_message,
                               service_t _service, instance_t _instance,
                               eventgroup_t _eventgroup,
                               std::shared_ptr<eventgroupinfo> &_info,
                               bool _is_subscription);

  void process_serviceentry(
      std::shared_ptr<serviceentry_impl> &_entry,
      const std::vector<std::shared_ptr<option_impl> > &_options);
  void process_eventgroupentry(
      std::shared_ptr<eventgroupentry_impl> &_entry,
      const std::vector<std::shared_ptr<option_impl> > &_options);

  void handle_service_availability(service_t _service, instance_t _instance,
                                   major_version_t _major,
                                   minor_version_t _minor, ttl_t _ttl,
                                   const boost::asio::ip::address &_address,
                                   uint16_t _port, bool _reliable);
  void handle_eventgroup_subscription(
      service_t _service, instance_t _instance, eventgroup_t _eventgroup,
      major_version_t _major, ttl_t _ttl,
      const boost::asio::ip::address &_reliable_address,
      uint16_t _reliable_port, uint16_t _unreliable_port);
  void handle_eventgroup_subscription_ack(
      service_t _service, instance_t _instance, eventgroup_t _eventgroup,
      major_version_t _major, ttl_t _ttl,
      const boost::asio::ip::address &_address, uint16_t _port);

 private:
  boost::asio::io_service &io_;
  service_discovery_host *host_;

  boost::asio::ip::address unicast_;
  uint16_t port_;
  bool reliable_;

  std::shared_ptr<serializer> serializer_;
  std::shared_ptr<deserializer> deserializer_;

  std::shared_ptr<service_discovery_fsm> default_;
  std::map<std::string, std::shared_ptr<service_discovery_fsm> > additional_;

  std::map<service_t, std::map<instance_t, std::shared_ptr<request> > > requested_;
  std::map<service_t,
      std::map<instance_t,
          std::map<eventgroup_t, std::shared_ptr<subscription> > > > subscribed_;

  std::mutex serialize_mutex_;

  // Sessions
  std::map<boost::asio::ip::address, session_t> sessions_;
};

}  // namespace sd
}  // namespace vsomeip

#endif // VSOMEIP_SERVICE_DISCOVERY_IMPL