developer.intra2net.com Git - libt2n/blob - src/socket_wrapper.hxx

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Gerd v. Egidy                                   *
   3  *   gve@intra2net.com                                                     *
   4  *                                                                         *
   5  *   This library is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU Lesser General Public License version   *
   7  *   2.1 as published by the Free Software Foundation.                     *
   8  *                                                                         *
   9  *   This library is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU Lesser General Public License for more details.                   *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU Lesser General Public      *
  15  *   License along with this program; if not, write to the                 *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 #ifndef __LIBT2N_SOCKET_WRAPPER
  21 #define __LIBT2N_SOCKET_WRAPPER
  22
  23 #include <functional>
  24 #include <string>
  25
  26 #include <client.hxx>
  27 #include <command_client.hxx>
  28 #include <types.hxx>
  29 #include <client_wrapper.hxx>
  30 #include <socket_client.hxx>
  31
  32 namespace libt2n
  33 {
  34
  35 class BasicSocketWrapper : public ConnectionWrapper
  36 {
  37     protected:
  38         socket_type_value socket_type;
  39
  40         std::string path;
  41         std::string server;
  42         int port;
  43
  44         long long connect_timeout_usec;
  45         int max_retries;
  46
  47         std::auto_ptr<socket_client_connection> c;
  48
  49     public:
  50         BasicSocketWrapper(int _port, const std::string& _server="127.0.0.1",
  51             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
  52             int _max_retries=socket_client_connection::max_retries_default)
  53             : port(_port), server(_server), connect_timeout_usec(_connect_timeout_usec),
  54               max_retries(_max_retries), socket_type(tcp_s), ConnectionWrapper()
  55             { }
  56
  57         BasicSocketWrapper(const std::string& _path,
  58             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
  59             int _max_retries=socket_client_connection::max_retries_default)
  60             : path(_path), connect_timeout_usec(_connect_timeout_usec),
  61               max_retries(_max_retries), socket_type(unix_s), ConnectionWrapper()
  62             { }
  63
  64         client_connection* get_connection(void);
  65
  66         bool connection_established(void)
  67             { return (c.get() != NULL); }
  68
  69         void set_logging(std::ostream *_logstream, log_level_values _log_level);
  70 };
  71
  72 class ReconnectSocketWrapper : public BasicSocketWrapper
  73 {
  74     public:
  75         ReconnectSocketWrapper(int _port, const std::string& _server="127.0.0.1",
  76             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
  77             int _max_retries=socket_client_connection::max_retries_default)
  78             : BasicSocketWrapper(_port,_server,_connect_timeout_usec,_max_retries)
  79             { }
  80
  81         ReconnectSocketWrapper(const std::string& _path,
  82             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
  83             int _max_retries=socket_client_connection::max_retries_default)
  84             : BasicSocketWrapper(_path,_connect_timeout_usec,_max_retries)
  85             { }
  86
  87         bool handle(command_client* stubBase, boost::function< void() > f);
  88 };
  89
  90 class dummy_client_connection : public client_connection
  91 {
  92     private:
  93         void real_write(const std::string& data)
  94             { }
  95
  96     public:
  97         dummy_client_connection()
  98             : client_connection()
  99             { close(); }
 100
 101         bool fill_buffer(long long usec_timeout=-1, long long *usec_timeout_remaining=NULL)
 102             { return false; }
 103 };
 104
 105 class ReconnectIgnoreFailureSocketWrapper : public ReconnectSocketWrapper
 106 {
 107     private:
 108         dummy_client_connection dc;
 109
 110     public:
 111         ReconnectIgnoreFailureSocketWrapper(int _port, const std::string& _server="127.0.0.1",
 112             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
 113             int _max_retries=socket_client_connection::max_retries_default)
 114             : ReconnectSocketWrapper(_port,_server,_connect_timeout_usec,_max_retries)
 115             { }
 116
 117         ReconnectIgnoreFailureSocketWrapper(const std::string& _path,
 118             long long _connect_timeout_usec=socket_client_connection::connect_timeout_usec_default,
 119             int _max_retries=socket_client_connection::max_retries_default)
 120             : ReconnectSocketWrapper(_path,_connect_timeout_usec,_max_retries)
 121             { }
 122
 123         client_connection* get_connection(void);
 124         bool handle(command_client* stubBase, boost::function< void() > f);
 125 };
 126
 127 }
 128
 129 #endif