RpcServer.h

/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * RpcServer.h
 * A generic RPC server.
 * Copyright (C) 2014 Simon Newton
 */

#ifndef COMMON_RPC_RPCSERVER_H_
#define COMMON_RPC_RPCSERVER_H_

#include <stdint.h>
#include <ola/io/SelectServerInterface.h>
#include <ola/network/TCPSocketFactory.h>

#include <set>
#include <memory>

namespace ola {

class ExportMap;

namespace rpc {

class RpcServer {
 public:
  struct Options {
   public:
    uint16_t listen_port;

    class ExportMap *export_map;  

    ola::network::TCPAcceptingSocket *listen_socket;

    Options()
      : listen_port(0),
        export_map(NULL),
        listen_socket(NULL) {
    }
  };

  RpcServer(ola::io::SelectServerInterface *ss,
            class RpcService *service,
            class RpcSessionHandlerInterface *session_handler,
            const Options &options);

  ~RpcServer();

  bool Init();

  ola::network::GenericSocketAddress ListenAddress();

  bool AddClient(ola::io::ConnectedDescriptor *descriptor);

 private:
  typedef std::set<ola::io::ConnectedDescriptor*> ClientDescriptors;

  ola::io::SelectServerInterface *m_ss;
  RpcService *m_service;
  class RpcSessionHandlerInterface *m_session_handler;
  const Options m_options;

  ola::network::TCPSocketFactory m_tcp_socket_factory;
  std::auto_ptr<ola::network::TCPAcceptingSocket> m_accepting_socket;
  ClientDescriptors m_connected_sockets;

  void NewTCPConnection(ola::network::TCPSocket *socket);
  void ChannelClosed(ola::io::ConnectedDescriptor *socket,
                     class RpcSession *session);

  void CleanupChannel(class RpcChannel *channel,
                      ola::io::ConnectedDescriptor *socket);

  static const char K_CLIENT_VAR[];
  static const char K_RPC_PORT_VAR[];
};
}  // namespace rpc
}  // namespace ola

#endif  // COMMON_RPC_RPCSERVER_H_