TAO/orbsvcs/FT_ReplicationManager/FT_ReplicationManager.cpp

   1 /* -*- C++ -*- */
   2 //=============================================================================
   3 /**
   4  *  @file    FT_ReplicationManager.cpp
   5  *
   6  *  This file is part of Fault Tolerant CORBA.
   7  *  This file implements the FT_ReplicationManager class as declared in
   8  *  FT_Replication_Manager.h.
   9  *
  10  *  @author Curt Hibbs <hibbs_c@ociweb.com>
  11  */
  12 //=============================================================================
  13 #include "orbsvcs/Log_Macros.h"
  14 #include "FT_ReplicationManager.h"
  15 #include "FT_Property_Validator.h"
  16
  17 #include "ace/Get_Opt.h"
  18 #include "ace/OS_NS_stdio.h"
  19 #include "ace/OS_NS_unistd.h"
  20 #include "tao/Messaging/Messaging.h"
  21 #include "tao/IORTable/IORTable.h"
  22 #include "tao/debug.h"
  23 #include "tao/ORB_Constants.h"
  24 #include "orbsvcs/PortableGroup/PG_Object_Group.h"
  25 #include "orbsvcs/PortableGroup/PG_Property_Set.h"
  26 #include "orbsvcs/PortableGroup/PG_Properties_Encoder.h"
  27 #include "orbsvcs/PortableGroup/PG_Property_Utils.h"
  28 #include "orbsvcs/PortableGroup/PG_conf.h"
  29
  30 #include "orbsvcs/FaultTolerance/FT_IOGR_Property.h"
  31 #include "orbsvcs/FT_ReplicationManager/FT_ReplicationManagerFaultAnalyzer.h"
  32
  33 // Use this macro at the beginning of CORBA methods
  34 // to aid in debugging.
  35 #define METHOD_ENTRY(name)    \
  36   if (TAO_debug_level > 6)    \
  37   {                           \
  38     ORBSVCS_DEBUG (( LM_DEBUG,    \
  39     "Enter %s\n", #name       \
  40       ));                     \
  41   }
  42
  43 // Use this macro to return from CORBA methods
  44 // to aid in debugging.  Note that you can specify
  45 // the return value after the macro, for example:
  46 // METHOD_RETURN(Plugh::plover) xyzzy; is equivalent
  47 // to return xyzzy;
  48 // METHOD_RETURN(Plugh::troll); is equivalent to
  49 // return;
  50 // WARNING: THIS GENERATES TWO STATEMENTS!!! THE FOLLOWING
  51 // will not do what you want it to:
  52 //  if (cave_is_closing) METHOD_RETURN(Plugh::pirate) aarrggh;
  53 // Moral:  Always use braces.
  54 #define METHOD_RETURN(name)   \
  55   if (TAO_debug_level > 6)    \
  56   {                           \
  57     ORBSVCS_DEBUG (( LM_DEBUG,    \
  58       "Leave %s\n", #name     \
  59       ));                     \
  60   }                           \
  61   return /* value goes here */
  62
  63 #define TODO
  64 //#define TODO int todo; // warn on todos
  65
  66 TAO_BEGIN_VERSIONED_NAMESPACE_DECL
  67
  68 TAO::FT_ReplicationManager::FT_ReplicationManager ()
  69   : orb_ (CORBA::ORB::_nil ())
  70   , poa_ (PortableServer::POA::_nil ())
  71   , ior_output_file_ (0)
  72   , ns_name_ ("")
  73   , naming_context_ (CosNaming::NamingContext::_nil ())
  74   , replication_manager_ref_ (FT::ReplicationManager::_nil ())
  75   , fault_notifier_ (FT::FaultNotifier::_nil ())
  76   , fault_notifier_ior_string_ (0)
  77   , fault_consumer_ ()
  78   , factory_registry_ ("ReplicationManager::FactoryRegistry")
  79   , quit_ (0)
  80 {
  81   // init must be called before using this object.
  82 }
  83
  84 TAO::FT_ReplicationManager::~FT_ReplicationManager ()
  85 {
  86   // cleanup happens in fini
  87 }
  88
  89 //public
  90 int TAO::FT_ReplicationManager::parse_args (int argc, ACE_TCHAR * argv[])
  91 {
  92   ACE_Get_Opt get_opts (argc, argv, ACE_TEXT("n:o:f:"));
  93   int c;
  94
  95   while ( (c = get_opts ()) != -1)
  96   {
  97     switch (c)
  98     {
  99       case 'o':
 100         this->ior_output_file_ = get_opts.opt_arg ();
 101         break;
 102
 103       case 'n':
 104         this->ns_name_ = ACE_TEXT_ALWAYS_CHAR(get_opts.opt_arg ());
 105         break;
 106
 107       case 'f':
 108         this->fault_notifier_ior_string_ = get_opts.opt_arg ();
 109         break;
 110
 111       case '?':
 112         // fall thru
 113       default:
 114         ORBSVCS_ERROR_RETURN ( (LM_ERROR,
 115                            ACE_TEXT ("%T %n (%P|%t) - usage:  %s")
 116                            ACE_TEXT (" -o <iorfile (for testing)>")
 117                            ACE_TEXT (" -f <fault notifier IOR (for testing)>")
 118                            ACE_TEXT (" -n <name-to-bind-in-NameService (for testing)>")
 119                            ACE_TEXT ("\n"),
 120                            argv [0]),
 121                           -1);
 122       break;
 123     }
 124   }
 125   // Indicates successful parsing of the command line
 126   return 0;
 127 }
 128
 129 //public
 130 const char * TAO::FT_ReplicationManager::identity () const
 131 {
 132   return this->identity_.c_str ();
 133 }
 134
 135 //public
 136 int TAO::FT_ReplicationManager::init (CORBA::ORB_ptr orb)
 137 {
 138   int result = 0;
 139
 140   if (TAO_debug_level > 1)
 141   {
 142     ORBSVCS_DEBUG ( (LM_DEBUG,
 143       ACE_TEXT (
 144         "%T %n (%P|%t) - Enter TAO::FT_ReplicationManager::init.\n")
 145     ));
 146   }
 147
 148
 149   this->orb_ = CORBA::ORB::_duplicate (orb);
 150
 151   // Get the RootPOA.
 152   CORBA::Object_var poa_obj = this->orb_->resolve_initial_references (
 153     TAO_OBJID_ROOTPOA);
 154   this->poa_ = PortableServer::POA::_narrow (
 155     poa_obj.in ());
 156
 157
 158   // initialize the FactoryRegistry
 159   this->factory_registry_.init (this->orb_.in (), this->poa_.in ());
 160
 161   PortableGroup::FactoryRegistry_var factory_registry = this->factory_registry_.reference ();
 162
 163   // @@: do we want to use the same poa to create object groups?
 164   this->group_factory_.init (
 165     this->orb_.in (),
 166     this->poa_.in (),
 167     factory_registry.in ());
 168
 169   // Activate ourself in the POA.
 170   PortableServer::ObjectId_var oid = this->poa_->activate_object (
 171     this);
 172
 173   CORBA::Object_var this_obj = this->poa_->id_to_reference (
 174     oid.in ());
 175   this->replication_manager_ref_ = FT::ReplicationManager::_narrow (
 176     this_obj.in ());
 177
 178   // If we were given an initial IOR string for a Fault Notifier on the
 179   // command line, convert it to an IOR, then register the fault
 180   // notifier.
 181   if (this->fault_notifier_ior_string_ != 0)
 182   {
 183     CORBA::Object_var notifier_obj = this->orb_->string_to_object (
 184       this->fault_notifier_ior_string_);
 185     FT::FaultNotifier_var notifier = FT::FaultNotifier::_narrow (
 186       notifier_obj.in ());
 187     if (! CORBA::is_nil (notifier.in ()))
 188     {
 189       this->register_fault_notifier_i (notifier.in ());
 190     }
 191     else
 192     {
 193       ORBSVCS_ERROR_RETURN ( (LM_ERROR,
 194         ACE_TEXT (
 195           "%T %n (%P|%t) - Could not resolve notifier IOR.\n")),
 196           -1);
 197     }
 198   }
 199
 200   // Activate the RootPOA.
 201   PortableServer::POAManager_var poa_mgr =
 202     this->poa_->the_POAManager ();
 203   poa_mgr->activate ();
 204
 205   // Register our IOR in the IORTable with the key-string
 206   // "ReplicationManager".
 207   CORBA::Object_var ior_table_obj =
 208     this->orb_->resolve_initial_references (
 209       TAO_OBJID_IORTABLE);
 210
 211   IORTable::Table_var ior_table =
 212     IORTable::Table::_narrow (ior_table_obj.in ());
 213   if (CORBA::is_nil (ior_table.in ()))
 214   {
 215     ORBSVCS_ERROR_RETURN ( (LM_ERROR,
 216       ACE_TEXT ("%T %n (%P|%t) - Unable to resolve the IORTable.\n")),
 217       -1);
 218   }
 219   else
 220   {
 221     CORBA::String_var rm_ior_str = this->orb_->object_to_string (
 222       this->replication_manager_ref_.in ());
 223     ior_table->bind ("ReplicationManager", rm_ior_str.in ());
 224   }
 225
 226   // Publish our IOR, either to a file or the Naming Service.
 227   if (this->ior_output_file_ != 0)
 228   {
 229     this->identity_ = "file:";
 230     this->identity_ += ACE_TEXT_ALWAYS_CHAR(this->ior_output_file_);
 231     result = this->write_ior ();
 232   }
 233
 234   if (result == 0 && this->ns_name_.length () != 0)
 235   {
 236     this->identity_ = "name:";
 237     this->identity_ += this->ns_name_;
 238
 239     CORBA::Object_var naming_obj = this->orb_->resolve_initial_references (
 240         TAO_OBJID_NAMESERVICE);
 241
 242     this->naming_context_ =
 243       CosNaming::NamingContext::_narrow (
 244         naming_obj.in ());
 245
 246     if (CORBA::is_nil (this->naming_context_.in ()))
 247     {
 248       ORBSVCS_ERROR_RETURN ( (LM_ERROR,
 249         ACE_TEXT ("%T %n (%P|%t) - Unable to find the Naming Service.\n")),
 250         -1);
 251     }
 252
 253     this->this_name_.length (1);
 254     this->this_name_[0].id = CORBA::string_dup (this->ns_name_.c_str ());
 255
 256     this->naming_context_->rebind (
 257       this->this_name_,
 258       this->replication_manager_ref_.in ());
 259   }
 260
 261   if (TAO_debug_level > 1)
 262   {
 263     if (result == 0)
 264     {
 265       ORBSVCS_DEBUG ( (LM_DEBUG,
 266         ACE_TEXT (
 267           "%T %n (%P|%t) - Leave TAO::FT_ReplicationManager::init.\n")
 268       ));
 269     }
 270     else
 271     {
 272       ORBSVCS_DEBUG ( (LM_DEBUG,
 273         ACE_TEXT (
 274           "%T %n (%P|%t) - FT_ReplicationManager::init failed.\n")
 275       ));
 276     }
 277   }
 278
 279   ////////////////////////////////
 280   // Initialize default properties
 281   PortableGroup::Value value;
 282   value <<= TAO_PG_MEMBERSHIP_STYLE;
 283   this->properties_support_.set_default_property (PortableGroup::PG_MEMBERSHIP_STYLE, value);
 284
 285   value <<= TAO_PG_INITIAL_NUMBER_MEMBERS;
 286   this->properties_support_.set_default_property (PortableGroup::PG_INITIAL_NUMBER_MEMBERS, value);
 287
 288   value <<= TAO_PG_MINIMUM_NUMBER_MEMBERS;
 289   this->properties_support_.set_default_property (PortableGroup::PG_MINIMUM_NUMBER_MEMBERS, value);
 290
 291   value <<= FT::SEMI_ACTIVE;
 292   this->properties_support_.set_default_property (FT::FT_REPLICATION_STYLE, value);
 293
 294   value <<= FT::CONS_APP_CTRL;
 295   this->properties_support_.set_default_property (  FT::FT_CONSISTENCY_STYLE, value);
 296
 297   value <<= FT::PULL;
 298   this->properties_support_.set_default_property (FT::FT_FAULT_MONITORING_STYLE, value);
 299
 300   value <<= FT::MEMB;
 301   this->properties_support_.set_default_property (FT::FT_FAULT_MONITORING_GRANULARITY, value);
 302
 303 #if 0
 304   FaultMonitoringIntervalAndTimeoutValue times;
 305   value <<= times;
 306   this->properties_support_.set_default_property (FT::FT_FAULT_MONITORING_INTERVAL_AND_TIMEOUT, value);
 307 #endif
 308
 309 #if 0
 310   value << interval;
 311   this->properties_support_.set_default_property (FT::FT_CHECKPOINT_INTERVAL, value);
 312 #endif
 313
 314
 315   return result;
 316 }
 317
 318 //public
 319 int TAO::FT_ReplicationManager::idle (int & result)
 320 {
 321   ACE_UNUSED_ARG (result);
 322   return this->quit_;
 323 }
 324
 325
 326 //public
 327 int TAO::FT_ReplicationManager::fini ()
 328 {
 329   int result = 0;
 330
 331   result = this->fault_consumer_.fini ();
 332
 333   if (this->ior_output_file_ != 0)
 334   {
 335     ACE_OS::unlink (this->ior_output_file_);
 336     this->ior_output_file_ = 0;
 337   }
 338   if (this->ns_name_.length () != 0)
 339   {
 340     this->naming_context_->unbind (this->this_name_);
 341     this->ns_name_.clear ();
 342   }
 343
 344   return result;
 345 }
 346
 347 //CORBA
 348 void
 349 TAO::FT_ReplicationManager::register_fault_notifier (
 350   FT::FaultNotifier_ptr fault_notifier)
 351 {
 352   this->register_fault_notifier_i (fault_notifier);
 353 }
 354
 355 //private
 356 void
 357 TAO::FT_ReplicationManager::register_fault_notifier_i (
 358   FT::FaultNotifier_ptr fault_notifier)
 359 {
 360   if (CORBA::is_nil (fault_notifier))
 361   {
 362     ORBSVCS_ERROR ( (LM_ERROR,
 363       ACE_TEXT (
 364         "%T %n (%P|%t) - Bad Fault Notifier object reference provided.\n")
 365     ));
 366     throw CORBA::BAD_PARAM (
 367       CORBA::SystemException::_tao_minor_code (
 368         TAO::VMCID,
 369         EINVAL),
 370       CORBA::COMPLETED_NO);
 371   }
 372
 373   // Cache new Fault Notifier object reference.
 374   this->fault_notifier_ = FT::FaultNotifier::_duplicate (fault_notifier);
 375
 376   // Re-initialize our consumer.
 377   // Swallow any exception.
 378   int result = 0;
 379   try
 380   {
 381     //@@ should we check to see if a notifier is already registered, rather than
 382     // simply "unregistering"?
 383     result = this->fault_consumer_.fini ();
 384
 385     // Note if the fini failed, we ignore it.  It may not have been registered
 386     // in the first place.
 387
 388     // Create a fault analyzer.
 389     TAO::FT_FaultAnalyzer * analyzer = 0;
 390     ACE_NEW_NORETURN (
 391       analyzer,
 392       TAO::FT_ReplicationManagerFaultAnalyzer (this));
 393     if (analyzer == 0)
 394     {
 395       ORBSVCS_ERROR ( (LM_ERROR,
 396         ACE_TEXT (
 397           "%T %n (%P|%t) - Error creating FaultAnalyzer.\n"
 398           )
 399       ));
 400       result = -1;
 401     }
 402     if (result == 0)
 403     {
 404       result = this->fault_consumer_.init (
 405         this->poa_.in (),
 406         this->fault_notifier_.in (),
 407         analyzer);
 408     }
 409   }
 410   catch (const CORBA::Exception& ex)
 411   {
 412     ex._tao_print_exception (
 413       ACE_TEXT ("TAO::FT_ReplicationManager::register_fault_notifier_i: ")
 414       ACE_TEXT ("Error reinitializing FT_FaultConsumer.\n"));
 415     result = -1;
 416   }
 417
 418   if (result != 0)
 419   {
 420     ORBSVCS_ERROR ( (LM_ERROR,
 421       ACE_TEXT (
 422         "%T %n (%P|%t) - Could not re-initialize FT_FaultConsumer.\n")
 423     ));
 424
 425     throw CORBA::INTERNAL (
 426       CORBA::SystemException::_tao_minor_code (
 427         TAO::VMCID,
 428         EINVAL),
 429       CORBA::COMPLETED_NO);
 430   }
 431 }
 432
 433
 434 // Returns the reference of the Fault Notifier.
 435 //CORBA
 436 FT::FaultNotifier_ptr
 437 TAO::FT_ReplicationManager::get_fault_notifier ()
 438 {
 439   if (CORBA::is_nil (this->fault_notifier_.in ()))
 440   {
 441     throw FT::InterfaceNotFound ();
 442   }
 443   return FT::FaultNotifier::_duplicate (this->fault_notifier_.in ());
 444 }
 445
 446
 447 // TAO-specific find factory registry
 448 //CORBA
 449 ::PortableGroup::FactoryRegistry_ptr
 450 TAO::FT_ReplicationManager::get_factory_registry (
 451   const PortableGroup::Criteria & selection_criteria)
 452 {
 453   ACE_UNUSED_ARG (selection_criteria);
 454   return this->factory_registry_.reference ();
 455 }
 456
 457 // TAO-specific shutdown operation.
 458 //public
 459 void TAO::FT_ReplicationManager::shutdown ()
 460 {
 461   this->quit_ = 1;
 462 }
 463
 464 // Get the type_id associated with an object group.
 465 //CORBA
 466 char * TAO::FT_ReplicationManager::type_id (
 467   PortableGroup::ObjectGroup_ptr object_group)
 468 {
 469   char * result = 0;
 470   TAO::PG_Object_Group * group = 0;
 471   if (this->group_factory_.find_group (object_group, group))
 472   {
 473     result = group->get_type_id ();
 474   }
 475   else
 476   {
 477     throw PortableGroup::ObjectGroupNotFound ();
 478   }
 479   return result;
 480 }
 481
 482 //////////////////////////////////////////////////////
 483 // PortableGroup::PropertyManager methods
 484
 485 //CORBA
 486 void
 487 TAO::FT_ReplicationManager::set_default_properties (
 488   const PortableGroup::Properties & props)
 489 {
 490   this->properties_support_.set_default_properties (props);
 491   //@@ validate properties?
 492 }
 493
 494 //CORBA
 495 PortableGroup::Properties *
 496 TAO::FT_ReplicationManager::get_default_properties ()
 497 {
 498   return this->properties_support_.get_default_properties ();
 499 }
 500
 501 //CORBA
 502 void
 503 TAO::FT_ReplicationManager::remove_default_properties (
 504     const PortableGroup::Properties & props)
 505 {
 506   this->properties_support_.remove_default_properties (props);
 507 }
 508
 509 //CORBA
 510 void
 511 TAO::FT_ReplicationManager::set_type_properties (
 512     const char *type_id,
 513     const PortableGroup::Properties & overrides)
 514 {
 515   this->properties_support_.set_type_properties (
 516     type_id,
 517     overrides);
 518 }
 519
 520 //CORBA
 521 PortableGroup::Properties *
 522 TAO::FT_ReplicationManager::get_type_properties (
 523     const char *type_id)
 524 {
 525   return this->properties_support_.get_type_properties (type_id);
 526 }
 527
 528 //CORBA
 529 void
 530 TAO::FT_ReplicationManager::remove_type_properties (
 531     const char *type_id,
 532     const PortableGroup::Properties & props)
 533 {
 534   this->properties_support_.remove_type_properties (
 535     type_id,
 536     props);
 537 }
 538
 539 //CORBA
 540 void
 541 TAO::FT_ReplicationManager::set_properties_dynamically (
 542     PortableGroup::ObjectGroup_ptr object_group,
 543     const PortableGroup::Properties & overrides)
 544 {
 545   TAO::PG_Object_Group * group = 0;
 546   if (this->group_factory_.find_group (object_group, group))
 547   {
 548     group->set_properties_dynamically (overrides);
 549   }
 550   else
 551   {
 552     throw PortableGroup::ObjectGroupNotFound ();
 553   }
 554 }
 555
 556 //CORBA
 557 PortableGroup::Properties *
 558 TAO::FT_ReplicationManager::get_properties (
 559     PortableGroup::ObjectGroup_ptr object_group)
 560 {
 561   PortableGroup::Properties_var result;
 562   ACE_NEW_THROW_EX (result, PortableGroup::Properties(), CORBA::NO_MEMORY ());
 563
 564   TAO::PG_Object_Group * group = 0;
 565   if (this->group_factory_.find_group (object_group, group))
 566   {
 567     group->get_properties (result);
 568   }
 569   else
 570   {
 571     throw PortableGroup::ObjectGroupNotFound ();
 572   }
 573   return result._retn();
 574 }
 575
 576
 577 //////////////////////////////////////////////////////
 578 // FT::FTObjectGroupManager methods
 579
 580 /// Sets the primary member of a group.
 581 //CORBA
 582 PortableGroup::ObjectGroup_ptr
 583 TAO::FT_ReplicationManager::set_primary_member (
 584   PortableGroup::ObjectGroup_ptr object_group,
 585   const PortableGroup::Location & the_location)
 586 {
 587   METHOD_ENTRY (TAO::FT_ReplicationManager::set_primary_member);
 588   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil();
 589   TAO::PG_Object_Group * group = 0;
 590   if (this->group_factory_.find_group (object_group, group))
 591   {
 592     PortableGroup::TagGroupTaggedComponent tag_component;
 593     TAO_FT_IOGR_Property prop (tag_component);
 594
 595     int sts = group->set_primary_member (&prop, the_location);
 596     if (sts)
 597     {
 598       result = group->reference ();
 599     }
 600     else
 601     {
 602       throw FT::PrimaryNotSet ();
 603     }
 604   }
 605   else
 606   {
 607     throw PortableGroup::ObjectGroupNotFound ();
 608   }
 609   METHOD_RETURN (TAO::FT_ReplicationManager::set_primary_member) result._retn ();
 610 }
 611
 612 //CORBA
 613 PortableGroup::ObjectGroup_ptr
 614 TAO::FT_ReplicationManager::create_member (
 615     PortableGroup::ObjectGroup_ptr object_group,
 616     const PortableGroup::Location & the_location,
 617     const char * type_id,
 618     const PortableGroup::Criteria & the_criteria)
 619 {
 620   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil();
 621   TAO::PG_Object_Group * group = 0;
 622   if (this->group_factory_.find_group (object_group, group))
 623   {
 624     group->create_member (the_location, type_id, the_criteria);
 625     result = group->reference ();
 626   }
 627   else
 628   {
 629     if (TAO_debug_level > 0)
 630     {
 631       ORBSVCS_ERROR ( (LM_ERROR,
 632         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::create_member: unknown group\n")
 633         ));
 634     }
 635     throw PortableGroup::ObjectGroupNotFound ();
 636   }
 637   return result._retn();
 638 }
 639
 640
 641 //CORBA
 642 PortableGroup::ObjectGroup_ptr
 643 TAO::FT_ReplicationManager::add_member (
 644     PortableGroup::ObjectGroup_ptr object_group,
 645     const PortableGroup::Location & the_location,
 646     CORBA::Object_ptr member)
 647 {
 648   METHOD_ENTRY (TAO::FT_ReplicationManager::add_member);
 649   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil ();
 650
 651   // Find the object group corresponding to this IOGR
 652   TAO::PG_Object_Group * group = 0;
 653   if (this->group_factory_.find_group (object_group, group))
 654   {
 655     group->add_member (
 656       the_location,
 657       member);
 658
 659     result = group->reference ();
 660   }
 661   else
 662   {
 663     if (TAO_debug_level > 0)
 664     {
 665       ORBSVCS_ERROR ( (LM_ERROR,
 666         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::add_member to unknown group\n")
 667         ));
 668     }
 669     throw PortableGroup::ObjectGroupNotFound ();
 670   }
 671   METHOD_RETURN (TAO::FT_ReplicationManager::add_member) result._retn ();
 672 }
 673
 674 //CORBA
 675 PortableGroup::ObjectGroup_ptr
 676 TAO::FT_ReplicationManager::remove_member (
 677     PortableGroup::ObjectGroup_ptr object_group,
 678     const PortableGroup::Location & the_location)
 679 {
 680   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil ();
 681
 682   // Find the object group corresponding to this IOGR
 683   TAO::PG_Object_Group * group = 0;
 684   if (this->group_factory_.find_group (object_group, group))
 685   {
 686     group->remove_member (the_location);
 687
 688     group->minimum_populate ();
 689       //@@ how about the case where the member was removed successfully,
 690       // but for one reason or another we were unable to bring the group
 691       // back up to minimum_number_of_replicas?
 692
 693     result = group->reference ();
 694   }
 695   else
 696   {
 697     throw PortableGroup::ObjectGroupNotFound ();
 698   }
 699   return result._retn ();
 700 }
 701
 702 //CORBA
 703 PortableGroup::Locations *
 704 TAO::FT_ReplicationManager::locations_of_members (
 705     PortableGroup::ObjectGroup_ptr object_group)
 706 {
 707   PortableGroup::Locations * result = 0;
 708
 709   // Find the object group corresponding to this IOGR
 710   TAO::PG_Object_Group * group = 0;
 711   if (this->group_factory_.find_group (object_group, group))
 712   {
 713     result = group->locations_of_members ();
 714   }
 715   else
 716   {
 717     if (TAO_debug_level > 0)
 718     {
 719       ORBSVCS_ERROR ( (LM_ERROR,
 720         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::locations_of_members: unknown group\n")
 721         ));
 722     }
 723     throw PortableGroup::ObjectGroupNotFound ();
 724   }
 725   return result;
 726 }
 727
 728 //CORBA
 729 PortableGroup::ObjectGroups *
 730 TAO::FT_ReplicationManager::groups_at_location (
 731     const PortableGroup::Location & the_location)
 732 {
 733   return this->group_factory_.groups_at_location (the_location);
 734 }
 735
 736 //CORBA
 737 PortableGroup::ObjectGroupId
 738 TAO::FT_ReplicationManager::get_object_group_id (
 739     PortableGroup::ObjectGroup_ptr object_group)
 740 {
 741   PortableGroup::ObjectGroupId result = 0;
 742   TAO::PG_Object_Group * group = 0;
 743   if (this->group_factory_.find_group (object_group, group))
 744   {
 745     group->get_object_group_id ();
 746     result = group->get_object_group_id ();
 747   }
 748   else
 749   {
 750     if (TAO_debug_level > 0)
 751     {
 752       ORBSVCS_ERROR ( (LM_ERROR,
 753         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::get_object_group_id: unknown group\n")
 754         ));
 755     }
 756     throw PortableGroup::ObjectGroupNotFound ();
 757   }
 758   return result;
 759 }
 760
 761 //CORBA
 762 PortableGroup::ObjectGroup_ptr
 763 TAO::FT_ReplicationManager::get_object_group_ref (
 764     PortableGroup::ObjectGroup_ptr object_group)
 765 {
 766   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil ();
 767
 768   // Find the object group corresponding to this IOGR
 769   TAO::PG_Object_Group * group = 0;
 770   if (this->group_factory_.find_group (object_group, group))
 771   {
 772     result = group->reference ();
 773   }
 774   else
 775   {
 776     if (TAO_debug_level > 0)
 777     {
 778       ORBSVCS_ERROR ( (LM_ERROR,
 779         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::get_object_group_ref: unknown group\n")
 780         ));
 781     }
 782     throw PortableGroup::ObjectGroupNotFound ();
 783   }
 784   return result._retn();
 785 }
 786
 787 //CORBA, TAO specific
 788 PortableGroup::ObjectGroup_ptr
 789 TAO::FT_ReplicationManager::get_object_group_ref_from_id (
 790     PortableGroup::ObjectGroupId group_id)
 791 {
 792   PortableGroup::ObjectGroup_var result = PortableGroup::ObjectGroup::_nil ();
 793
 794   // Find the object group corresponding to this IOGR
 795   TAO::PG_Object_Group * group = 0;
 796   if (this->group_factory_.find_group (group_id, group))
 797   {
 798     result = group->reference ();
 799   }
 800   else
 801   {
 802     if (TAO_debug_level > 0)
 803     {
 804       ORBSVCS_ERROR ( (LM_ERROR,
 805         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::get_object_group_ref_from_id: unknown group\n")
 806         ));
 807     }
 808     throw PortableGroup::ObjectGroupNotFound ();
 809   }
 810   return result._retn();
 811 }
 812
 813 //CORBA
 814 CORBA::Object_ptr
 815 TAO::FT_ReplicationManager::get_member_ref (
 816     PortableGroup::ObjectGroup_ptr object_group,
 817     const PortableGroup::Location & the_location)
 818 {
 819   CORBA::Object_var result = CORBA::Object::_nil();
 820
 821   // Find the object group corresponding to this IOGR
 822   TAO::PG_Object_Group * group = 0;
 823   if (this->group_factory_.find_group (object_group, group))
 824   {
 825     result = group->get_member_reference (the_location);
 826   }
 827   else
 828   {
 829     if (TAO_debug_level > 0)
 830     {
 831       ORBSVCS_ERROR ( (LM_ERROR,
 832         ACE_TEXT ("%T %n (%P|%t) - FT_ReplicationManager::get_member_ref: unknown group\n")
 833         ));
 834     }
 835     throw PortableGroup::ObjectGroupNotFound ();
 836   }
 837   return result._retn();
 838 }
 839
 840
 841 //////////////////////////////////////////////////////
 842 // PortableGroup::GenericFactory methods
 843
 844 //CORBA
 845 CORBA::Object_ptr
 846 TAO::FT_ReplicationManager::create_object (
 847   const char * type_id,
 848   const PortableGroup::Criteria & the_criteria,
 849   PortableGroup::GenericFactory::FactoryCreationId_out factory_creation_id)
 850 {
 851   METHOD_ENTRY (TAO::FT_ReplicationManager::create_object)
 852
 853   ////////////////////////////////
 854   // find the properties for this
 855   // type of object group
 856   TAO::PG_Property_Set_var typeid_properties
 857     = this->properties_support_.find_typeid_properties (
 858       type_id);
 859
 860   TAO::PG_Object_Group * group
 861     = this->group_factory_.create_group (
 862       type_id,
 863       the_criteria,
 864       typeid_properties);
 865
 866   group->initial_populate ();
 867     //@@ on error we should remove the group from the Group_Factory
 868     // doing this "right" will require a var-type pointer to the object group
 869     // that knows about the factory, too.
 870
 871  // Allocate a new FactoryCreationId for use as an "out" parameter.
 872   PortableGroup::GenericFactory::FactoryCreationId_ptr factory_id_ptr = 0;
 873   ACE_NEW_THROW_EX (factory_id_ptr,
 874                     PortableGroup::GenericFactory::FactoryCreationId,
 875                     CORBA::NO_MEMORY (
 876                       CORBA::SystemException::_tao_minor_code (
 877                         TAO::VMCID,
 878                         ENOMEM),
 879                       CORBA::COMPLETED_NO));
 880   PortableGroup::GenericFactory::FactoryCreationId_var factory_id = factory_id_ptr;
 881   PortableGroup::ObjectGroupId group_id = group->get_object_group_id ();
 882   factory_id <<= group_id;
 883   factory_creation_id = factory_id._retn();
 884
 885   METHOD_RETURN (TAO::FT_ReplicationManager::create_object) group->reference ();
 886 }
 887
 888 //CORBA
 889 void
 890 TAO::FT_ReplicationManager::delete_object (
 891   const PortableGroup::GenericFactory::FactoryCreationId & factory_creation_id)
 892 {
 893   PortableGroup::ObjectGroupId group_id = 0;
 894   if (factory_creation_id >>= group_id)
 895   {
 896     this->group_factory_.delete_group (
 897       group_id);
 898   }
 899   else
 900   {
 901     throw PortableGroup::ObjectNotFound ();
 902   }
 903 }
 904
 905 //private
 906 int TAO::FT_ReplicationManager::write_ior ()
 907 {
 908   int result = -1;
 909   FILE* out = ACE_OS::fopen (this->ior_output_file_, "w");
 910   if (out)
 911   {
 912     CORBA::String_var ior_str = this->orb_->object_to_string (
 913       this->replication_manager_ref_.in ());
 914     ACE_OS::fprintf (out, "%s", ior_str.in ());
 915     ACE_OS::fclose (out);
 916     result = 0;
 917   }
 918   else
 919   {
 920     ORBSVCS_ERROR ( (LM_ERROR,
 921       ACE_TEXT ("%T %n (%P|%t) - Open failed for %s\n"), this->ior_output_file_
 922     ));
 923   }
 924   return result;
 925 }
 926
 927 TAO_END_VERSIONED_NAMESPACE_DECL