TAO/examples/OBV/Simple_util.cpp

   1 // This version of Simple_Util doesn't need to link against orbsvcs
   2 // On the other hand it has no naming service.
   3
   4 #ifndef SIMPLE_UTIL_C
   5 #define SIMPLE_UTIL_C
   6 # include "Simple_util.h"
   7 # include "tao/debug.h"
   8 # include "ace/OS_NS_stdio.h"
   9 # include "ace/OS_NS_fcntl.h"
  10 # include "ace/OS_NS_unistd.h"
  11 # include "ace/OS_NS_string.h"
  12
  13 // Constructor.
  14
  15 template <class Servant>
  16 Server<Servant>::Server (void)
  17     : ior_output_file_ (0)
  18 {
  19 }
  20
  21 // Destructor.
  22 template <class Servant>
  23 Server<Servant>::~Server (void)
  24 {
  25 }
  26
  27 // Parse the command-line arguments and set options.
  28
  29 template <class Servant> int
  30 Server<Servant>::parse_args (void)
  31 {
  32   ACE_Get_Opt get_opts (this->argc_, this->argv_, ACE_TEXT("do:ni:"));
  33   int c = 0;
  34
  35   while ((c = get_opts ()) != -1)
  36     switch (c)
  37       {
  38       case 'd':  // debug flag.
  39         TAO_debug_level++;
  40         break;
  41       case 'o':  // output the IOR to a file.
  42         this->ior_output_file_ = ACE_OS::fopen (get_opts.opt_arg (), "w");
  43         if (this->ior_output_file_ == 0)
  44           ACE_ERROR_RETURN ((LM_ERROR,
  45                              "Unable to open %s for writing: %p\n",
  46                              get_opts.opt_arg ()), -1);
  47         break;
  48
  49       case '?':  // display help for use of the server.
  50       default:
  51         ACE_ERROR_RETURN ((LM_ERROR,
  52                            "usage:  %s"
  53                            " [-d]"
  54                            " [-o] <ior_output_file>"
  55                            "\n",
  56                            argv_ [0]),
  57                           -1);
  58       }
  59
  60   // Indicates successful parsing of command line.
  61   return 0;
  62 }
  63
  64 // Initialize the server.
  65 template <class Servant> int
  66 Server<Servant>::init (const char *servant_name,
  67                        int argc,
  68                        ACE_TCHAR *argv[])
  69 {
  70   // Call the init of <TAO_ORB_Manager> to initialize the ORB and
  71   // create a child POA under the root POA.
  72   if (this->orb_manager_.init_child_poa (argc,
  73                                          argv,
  74                                          "child_poa") == -1)
  75     ACE_ERROR_RETURN ((LM_ERROR,
  76                        "%p\n",
  77                        "init_child_poa"),
  78                       -1);
  79
  80
  81   this->argc_ = argc;
  82   this->argv_ = argv;
  83
  84   int retval = this->parse_args ();
  85
  86   if (retval != 0)
  87     return retval;
  88
  89   CORBA::ORB_var orb = this->orb_manager_.orb ();
  90
  91   // Stash our ORB pointer for later reference.
  92   this->servant_.orb (orb.in ());
  93
  94   // Activate the servant in its own child POA.
  95
  96   // Make sure that you check for failures here via the ACE_TRY
  97   // macros?!
  98   try
  99     {
 100       CORBA::String_var str  =
 101         this->orb_manager_.activate_under_child_poa (servant_name,
 102                                                      &this->servant_);
 103
 104       ACE_DEBUG ((LM_DEBUG,
 105                   "The IOR is: <%s>\n",
 106                   str.in ()));
 107
 108       if (this->ior_output_file_)
 109         {
 110           ACE_OS::fprintf (this->ior_output_file_,
 111                            "%s",
 112                            str.in ());
 113           ACE_OS::fclose (this->ior_output_file_);
 114         }
 115
 116     }
 117   catch (const CORBA::Exception& ex)
 118     {
 119       ex._tao_print_exception ("Exception in activation of POA");
 120       return -1;
 121     }
 122
 123   return 0;
 124 }
 125
 126 template <class Servant>int
 127 Server<Servant>::run (void)
 128 {
 129     // Run the main event loop for the ORB.
 130   if (this->orb_manager_.run () == -1)
 131     ACE_ERROR_RETURN ((LM_ERROR,
 132                        "Server_i::run"),
 133                       -1);
 134
 135   return 0;
 136 }
 137
 138 template <class Servant> int
 139 Server<Servant>::register_name (void)
 140 {
 141   return -1;
 142 }
 143
 144 // Constructor.
 145
 146 template <class InterfaceObj, class Var>
 147 Client<InterfaceObj, Var>::Client (void)
 148   : ior_ (0)
 149 {
 150   //no-op
 151 }
 152
 153 // Reads the Server ior from a file
 154
 155 template <class InterfaceObj, class Var> int
 156 Client<InterfaceObj, Var>::read_ior (ACE_TCHAR *filename)
 157 {
 158   // Open the file for reading.
 159   ACE_HANDLE f_handle = ACE_OS::open (filename, 0);
 160
 161   if (f_handle == ACE_INVALID_HANDLE)
 162     ACE_ERROR_RETURN ((LM_ERROR,
 163                        "Unable to open %s for writing: %p\n",
 164                        filename),
 165                       -1);
 166
 167   ACE_Read_Buffer ior_buffer (f_handle);
 168   char *data = ior_buffer.read ();
 169
 170   if (data == 0)
 171     ACE_ERROR_RETURN ((LM_ERROR,
 172                        "Unable to read ior: %p\n"),
 173                       -1);
 174
 175   this->ior_ = ACE_OS::strdup (data);
 176   ior_buffer.alloc ()->free (data);
 177
 178   ACE_OS::close (f_handle);
 179
 180   return 0;
 181 }
 182
 183 // Parses the command line arguments and returns an error status.
 184
 185 template <class InterfaceObj, class Var> int
 186 Client<InterfaceObj, Var>::parse_args (void)
 187 {
 188   ACE_Get_Opt get_opts (argc_, argv_, ACE_TEXT("df:nk:x"));
 189   int c = 0;
 190   int result = 0;
 191
 192   while ((c = get_opts ()) != -1)
 193     switch (c)
 194       {
 195       case 'd':  // debug flag
 196         TAO_debug_level++;
 197         break;
 198       case 'k':  // ior provide on command line
 199         this->ior_ = ACE_OS::strdup (ACE_TEXT_ALWAYS_CHAR(get_opts.opt_arg ()));
 200         break;
 201       case 'f': // read the IOR from the file.
 202         result = this->read_ior (get_opts.opt_arg ());
 203         if (result < 0)
 204           ACE_ERROR_RETURN ((LM_ERROR,
 205                              "Unable to read ior from %s : %p\n",
 206                              get_opts.opt_arg ()),
 207                             -1);
 208         break;
 209       case 'x': // read the flag for shutting down
 210         this->shutdown_ = 1;
 211         break;
 212       }
 213
 214   // Indicates successful parsing of command line.
 215   return 0;
 216 }
 217
 218 template <class InterfaceObj, class Var>
 219 Client<InterfaceObj, Var>::~Client (void)
 220 {
 221   ACE_OS::free (this->ior_);
 222 }
 223
 224 template <class InterfaceObj, class Var> int
 225 Client<InterfaceObj, Var>::init (const char *name,
 226                                  int argc,
 227                                  ACE_TCHAR **argv)
 228 {
 229   this->argc_ = argc;
 230   this->argv_ = argv;
 231
 232
 233
 234   try
 235     {
 236       // Retrieve the ORB.
 237       this->orb_ = CORBA::ORB_init (this->argc_,
 238                                     this->argv_,
 239                                     name);
 240
 241       // Parse command line and verify parameters.
 242       if (this->parse_args () == -1)
 243         return -1;
 244
 245       if(this->ior_ != 0)
 246         {
 247           CORBA::Object_var server_object =
 248             this->orb_->string_to_object (this->ior_);
 249
 250
 251           if (CORBA::is_nil (server_object.in ()))
 252             ACE_ERROR_RETURN ((LM_ERROR,
 253                                "invalid ior <%s>\n",
 254                                this->ior_),
 255                               -1);
 256           this->server_ = InterfaceObj::_narrow (server_object.in ());
 257         }
 258       else
 259         ACE_ERROR_RETURN ((LM_ERROR,
 260                            "no ior or naming options  specified\n"),
 261                           -1);
 262
 263
 264     }
 265   catch (const CORBA::Exception& ex)
 266     {
 267       ex._tao_print_exception ("Client_i::init");
 268       return -1;
 269     }
 270
 271
 272   return 0;
 273 }
 274
 275
 276 template <class InterfaceObj, class Var> int
 277 Client<InterfaceObj, Var>::obtain_initial_references (void)
 278 {
 279
 280   return 0;
 281 }
 282
 283 template <class InterfaceObj, class Var> int
 284 Client<InterfaceObj, Var>::shutdown (void )
 285 {
 286   // Returns the shutdwon flag
 287   return shutdown_;
 288 }
 289
 290 template <class InterfaceObj, class Var> void
 291 Client<InterfaceObj, Var>::shutdown (int flag)
 292 {
 293   // Fills the flag
 294   shutdown_ = flag;
 295 }
 296
 297 #endif