//=============================================================================
/**
 *  @file nsgroup_svc.cpp
 *
 *  This file implements nsgroup utility operations
 *
 *  @author Phillip LaBanca <labancap@ociweb.com>
 */
//=============================================================================

#include "orbsvcs/Log_Macros.h"
#include "orbsvcs/Naming/FaultTolerant/nsgroup_svc.h"
#include "ace/OS_NS_strings.h"

NS_group_svc::NS_group_svc (bool quiet)
  : quiet_ (quiet)
{
}

bool
NS_group_svc::determine_policy_string (const ACE_TCHAR *policy,
                                       FT_Naming::LoadBalancingStrategyValue& value)
{
  bool rc = false;

  if (ACE_OS::strcasecmp (policy, ACE_TEXT_CHAR_TO_TCHAR ("round")) == 0)
    {
      value = FT_Naming::ROUND_ROBIN;
      rc = true;
    }
  if (ACE_OS::strcasecmp (policy, ACE_TEXT_CHAR_TO_TCHAR ("random")) == 0)
    {
      value = FT_Naming::RANDOM;
      rc = true;
    }

  return rc;
}

int
NS_group_svc::set_orb( CORBA::ORB_ptr orb)
{

  this->orb_ = CORBA::ORB::_duplicate (orb);

  if (CORBA::is_nil (this->orb_.in ()))
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to ")
                          ACE_TEXT ("initialize the ORB.\n")));
        }
      return -1;
    }
  return 0;
}

int
NS_group_svc::set_naming_manager (FT_Naming::NamingManager_ptr nm)
{

  this->naming_manager_ = FT_Naming::NamingManager::_duplicate (nm);

  if (CORBA::is_nil (this->naming_manager_.in ()))
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Invalid Naming Manager.\n")));
        }
      return -1;
    }
  return 0;
}

int
NS_group_svc::set_name_context( CosNaming::NamingContextExt_ptr nc)
{

  this->name_service_ = CosNaming::NamingContextExt::_duplicate (nc);

  if (CORBA::is_nil (this->name_service_.in ()))
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Invalid Name Context.\n")));
        }
      return -1;
    }
  return 0;
}

bool
NS_group_svc::group_exist ( const ACE_TCHAR* group_name )
{
  if (group_name == 0 )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_exist args not provided\n")));
        }
      return false;
    }

  try
    {
      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
          (ACE_TEXT_ALWAYS_CHAR (group_name));
    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      return false;
    }

  return true;
}

/**
 * The naming service shall provide a command line utility for creating
 * object groups. Adds the object group to to the load balancing service
 * with the specified selection policy. On Creation, an object group
 * contains no member objects.
 */

int
NS_group_svc::group_create (const ACE_TCHAR* group_name,
                            const ACE_TCHAR* policy )
{
  if (group_name == 0 || policy == 0 )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_create args not provided\n")));
        }
      return -2;
    }

  /// Validate load balancing strategy policy string
  FT_Naming::LoadBalancingStrategyValue strategy;
  if (false == determine_policy_string (policy, strategy))
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc %s is not a valid policy.\n"),
                          policy));
        }
      return -2;
    }

  try
    {
      /// Verify that the group does not already exist
      /// Group names must be unique
      if ( true == group_exist (group_name))
        {
          if (TAO_debug_level > 2)
            {
              ORBSVCS_ERROR ((LM_ERROR,
                              ACE_TEXT ("TAO (%P|%t) NS_group_svc Group %s already exists\n"),
                              group_name));
            }
          return -1;
        }

      PortableGroup::Criteria criteria (1);
      criteria.length (1);

      PortableGroup::Property &property = criteria[0];
      property.nam.length (1);

      property.nam[0].id = CORBA::string_dup ("org.omg.PortableGroup.MembershipStyle");

      PortableGroup::MembershipStyleValue msv = PortableGroup::MEMB_APP_CTRL;
      property.val <<= msv;

      CORBA::Object_var obj =
        this->naming_manager_->create_object_group (ACE_TEXT_ALWAYS_CHAR (group_name),
                                                    strategy,
                                                    criteria);

      if (CORBA::is_nil (obj.in ()))
        {
          {
            if (TAO_debug_level > 2)
              {
                ORBSVCS_ERROR ((LM_ERROR,
                                ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to create group %s.\n"),
                                group_name));
              }
            return -1;
          }
        }

    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to create group %s\n"),
                          group_name));
        }
      return -1;
    }

  return 0;
}

/**
 * The naming service shall provide a command line utility for binding an object
 * group to a path in the naming service.
 * Binds the specified object group to the specified path in the naming service.
 * When clients resolve that path, they tranparently obtain a member of the
 * specified object group.
 */
int
NS_group_svc::group_bind (const ACE_TCHAR* group_name,
                          const ACE_TCHAR* path)
{
  if (group_name == 0 || path == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_bind args not provided\n")));
        }
      return -2;
    }

  try
    {

      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
           (ACE_TEXT_ALWAYS_CHAR(group_name));

      if (CORBA::is_nil (group_var.in()))
        {
          if (TAO_debug_level > 2)
            {
              ORBSVCS_ERROR ((LM_ERROR,
                              ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to get reference.\n")));
            }
          return -1;
        }

      CORBA::String_var str = CORBA::string_dup( ACE_TEXT_ALWAYS_CHAR (path) );
      CosNaming::Name_var name = this->name_service_->to_name ( str.in() );

      this->name_service_->rebind (name.in(), group_var.in());

    }
  catch (const CosNaming::NamingContextExt::InvalidName& )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc %s is invalid\n"),
                          path));
        }
      return -1;
    }
  catch (const CosNaming::NamingContext::CannotProceed&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Cannot proceed with %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CosNaming::NamingContext::NotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CORBA::SystemException& )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to bind %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CORBA::Exception& )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to bind %s\n"),
                          path));
        }
      return -1;
    }
  return 0;
}

int
NS_group_svc::group_unbind (const ACE_TCHAR* path)
{
  if ( path == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_unbind args not provided\n")));
        }
      return -2;
    }

  try
    {
      CORBA::String_var str = CORBA::string_dup (ACE_TEXT_ALWAYS_CHAR (path));
      CosNaming::Name_var name = this->name_service_->to_name ( str.in() );
      this->name_service_->unbind (name.in());
    }
  catch (const CosNaming::NamingContext::NotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CosNaming::NamingContext::CannotProceed&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Cannot proceed with %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CosNaming::NamingContext::InvalidName&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc %s is invalid\n"),
                          path));
        }
      return -1;
    }
  catch (const CORBA::SystemException& )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to unbind %s\n"),
                          path));
        }
      return -1;
    }
  catch (const CORBA::Exception& )
    {

      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to unbind %s\n"),
                          path));
        }
      return -1;
    }
  return 0;
}

/**
 * The naming service shall provide a command line utility to display all
 * defined object groups within the naming service.
 * Displays all object groups that currently exist in the naming service.
 */
int
NS_group_svc::group_list ()
{

  // KCS: The group list is independent of locations. I created a new operation in the
  // naming manager IDL to support requesting the group list - which is a list of names

  /// Display object group list for each load balancing strategy
  int rc = 0;
  if (display_load_policy_group (FT_Naming::ROUND_ROBIN,
                                 ACE_TEXT ("Round Robin")) < 0 )
    {
      rc = -1;
    }
  if (rc == 0 && display_load_policy_group (FT_Naming::RANDOM,
                                            ACE_TEXT ("Random")) < 0 )
    {
      rc = -1;
    }

  return rc;
}

int
NS_group_svc::display_load_policy_group(FT_Naming::LoadBalancingStrategyValue strategy,
                                        const ACE_TCHAR *display_label)
{
  if( display_label == 0 )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc display_load_policy_group args ")
                          ACE_TEXT ("not provided\n")));
        }
      return -2;
    }

  try
    {
      FT_Naming::GroupNames_var list = this->naming_manager_->groups (strategy);
      if (!this->quiet_)
        {
          ORBSVCS_DEBUG ((LM_DEBUG,
                          ACE_TEXT ("%s Load Balancing Groups\n"),
                          display_label));
          if ( list->length () > 0 )
            {

              for (unsigned int i = 0; i < list->length (); ++i)
                {
                  CORBA::String_var s = CORBA::string_dup (list[i]);
                  ORBSVCS_DEBUG ((LM_DEBUG,
                                  ACE_TEXT ("  %C\n"),
                                  s.in ()));
                }
            }
          else
            {
              ORBSVCS_DEBUG ((LM_DEBUG,
                              ACE_TEXT ("No %s Load Balancing Groups Registered\n"),
                              display_label));
            }
        }
    }
  catch (const CORBA::Exception& )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to get %s group list\n"),
                          display_label));
        }
      return -1;
    }
  return 0;
}

/**
 * The naming service shall provide a command line utility to modify the load
 * balancing strategy for a specified object group.
 * Changes the selection algorithm for the specified object group. An object
 * group's selection algorithm determines how the naming service directs client
 * requests to object group members.
 */
int
NS_group_svc::group_modify (const ACE_TCHAR* group_name,
                            const ACE_TCHAR* policy)
{
  if (group_name == 0 || policy == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_modify args not provided\n")));
        }
      return -2;
    }

  /// Validate load balancing strategy policy string
  FT_Naming::LoadBalancingStrategyValue strategy;
  if (false == determine_policy_string (policy, strategy))
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc %s is not a valid policy.\n"),
                          policy));
        }
      return -2;
    }

  try
    {
      this->naming_manager_->set_load_balancing_strategy
        (ACE_TEXT_ALWAYS_CHAR (group_name), strategy );
    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to modify group %s\n"),
                          group_name));
        }
      return -1;
    }

  return 0;
}

/**
 * The naming service shall provide a command line utility to remove a specified
 * object group from the naming service.
 * Removes the specified object group from the naming service.
 */
int
NS_group_svc::group_remove (const ACE_TCHAR* group_name)
{
  if (group_name == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc group_remove args not provided\n")));
        }
      return -2;
    }

  try
    {
      this->naming_manager_->delete_object_group (ACE_TEXT_ALWAYS_CHAR (group_name));
    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to remove group %s\n"),
                          group_name));
        }
      return -1;
    }

  return 0;
}

/**
 * The naming service shall provide a command line utility for adding object
 * references to an object group.
 * Adds an object to the specified object group. After being added, the object
 * is available for selection.
 */
int
NS_group_svc::member_add (const ACE_TCHAR* group_name,
                          const ACE_TCHAR* location,
                          const ACE_TCHAR* ior)
{
  if (group_name == 0 || location == 0 || ior == 0 )
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc member_add args not provided\n")));
        }
      return -2;
    }

  try
    {
      PortableGroup::Location location_name;
      location_name.length (1);
      location_name[0].id = CORBA::string_dup (ACE_TEXT_ALWAYS_CHAR (location));

      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
                    (ACE_TEXT_ALWAYS_CHAR (group_name));

      CORBA::Object_var ior_var =
        this->orb_->string_to_object(ACE_TEXT_ALWAYS_CHAR (ior));

      if (CORBA::is_nil (ior_var.in ()))
        {
          if (TAO_debug_level > 2)
            {
              ORBSVCS_ERROR ((LM_ERROR,
                              ACE_TEXT ("TAO (%P|%t) NS_group_svc Invalid member IOR provided.\n")));
            }
          return -1;
        }

      group_var = this->naming_manager_->add_member (group_var.in(),
                                                     location_name,
                                                     ior_var.in());

    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const PortableGroup::ObjectNotAdded&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to add location %s to group %s\n"),
                          location, group_name));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to add location %s to group %s\n"),
                          location, group_name));
        }
      return -1;
    }
  return 0;
}

/**
 * The naming service shall provide a command line utility for displaying all
 * members (object references) for a specified object group.
 * Lists the members of the specified object group.
 */
int
NS_group_svc::member_list (const ACE_TCHAR* group_name)
{
  if (group_name == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc member_list args not provided\n")));
        }
      return -2;
    }

  try
    {
      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
          (ACE_TEXT_ALWAYS_CHAR (group_name));

      PortableGroup::Locations_var locations =
        this->naming_manager_->locations_of_members (group_var.in());

      if (!this->quiet_)
        {
          for (unsigned int i = 0; i < locations->length(); ++i)
            {
              const PortableGroup::Location & loc = locations[i];
              if (loc.length() > 0)
                {
                  ORBSVCS_DEBUG ((LM_DEBUG,
                                  ACE_TEXT ("%C\n"),
                                  loc[0].id.in()));
                }
            }
        }

    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to list members for group %s\n"),
                          group_name));
        }
      return -1;
    }

  return 0;
}

/**
 * The naming service shall provide a command line utility for removing object
 * references from an object group.
 * Removes the specified member object from the specified object group.
 */
int
NS_group_svc::member_remove (const ACE_TCHAR* group_name,
                             const ACE_TCHAR* location)
{
  if (group_name == 0 || location == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc member_remove args not provided\n")));
        }
      return -2;
    }

  /**
   * Remove an object at a specific location from the given
   * ObjectGroup.  Deletion of application created objects must be
   * deleted by the application.  Objects created by the
   * infrastructure (load balancer) will be deleted by the
   * infrastructure.
   */

  try
    {
      PortableGroup::Location location_name;
      location_name.length (1);
      location_name[0].id = CORBA::string_dup (ACE_TEXT_ALWAYS_CHAR (location));

      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
        (ACE_TEXT_ALWAYS_CHAR (group_name));

      group_var = this->naming_manager_->remove_member (group_var.in(),
                                                        location_name);
    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const PortableGroup::MemberNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find member %s\n"),
                          location));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to remove member %s\n"),
                          location));
        }
      return -1;
    }

  return 0;
}

/**
 * The naming service shall provide a command line utility to display an object
 * reference from a specified object group.
 * Displays the object reference that cooresponds to the specified member of an
 * object group.
 */
int
NS_group_svc::member_show (const ACE_TCHAR* group_name,
                           const ACE_TCHAR* location)
{
  if (group_name == 0 || location == 0)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc member_show args not provided\n")));
        }
      return -2;
    }

  //Get and display IOR for the member location
  try
    {
      PortableGroup::Location location_name (1);
      location_name.length (1);
      location_name[0].id = CORBA::string_dup (ACE_TEXT_ALWAYS_CHAR (location));

      PortableGroup::ObjectGroup_var group_var =
        this->naming_manager_->get_object_group_ref_from_name
        (ACE_TEXT_ALWAYS_CHAR (group_name));

      CORBA::Object_var ior_var =
        this->naming_manager_->get_member_ref (group_var.in(), location_name);

      CORBA::String_var ior_string  =
        this->orb_->object_to_string (ior_var.in());

      if (!this->quiet_)
        {
          ORBSVCS_DEBUG ((LM_DEBUG, ACE_TEXT ("%C\n"), ior_string.in()));
        }

    }
  catch (const PortableGroup::ObjectGroupNotFound&)
    {

      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find group %s\n"),
                          group_name));
        }
      return -1;
    }
  catch (const PortableGroup::MemberNotFound&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to find member location %s\n"),
                          location));
        }
      return -1;
    }
  catch (const CORBA::Exception&)
    {
      if (TAO_debug_level > 2)
        {
          ORBSVCS_ERROR ((LM_ERROR,
                          ACE_TEXT ("TAO (%P|%t) NS_group_svc Unable to show member location %s\n"),
                          location));
        }
      return -1;
    }

  return 0;
}