poa_hooks.cpp

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#include "POA_Hooks.h"
#include "PortableGroup_Loader.h"
#include "PortableGroup_Request_Dispatcher.h"

#include "tao/Stub.h"
#include "tao/Profile.h"
#include "tao/ORB_Constants.h"

ACE_RCSID (PortableGroup,
           POA_Hooks,
           "POA_Hooks.cpp,v 1.10 2003/10/28 18:34:24 bala Exp")

TAO_POA_Hooks::TAO_POA_Hooks (
  PortableGroup_Request_Dispatcher &request_dispatcher)
  : request_dispatcher_ (request_dispatcher)
{
}

TAO_POA_Hooks::~TAO_POA_Hooks (void)
{
}

#if (TAO_HAS_MINIMUM_POA == 0)

PortableServer::ObjectId *
TAO_POA_Hooks::create_id_for_reference (
    TAO_POA &the_poa,
    CORBA::Object_ptr the_ref
    ACE_ENV_ARG_DECL)
    ACE_THROW_SPEC ((
      CORBA::SystemException,
      PortableServer::NotAGroupObject
    ))
{

  // Get the RepositoryId from the Group reference so
  // we know what kind of reference to make.
  const char* repository_id = the_ref->_stubobj ()->type_id.in ();

  // Create a temporary object reference and then get the
  // ObjectId out of it.
  CORBA::Object_var obj_ref = the_poa.create_reference (repository_id
                                                        ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (0);

  PortableServer::ObjectId_var obj_id = the_poa.reference_to_id (obj_ref.in ()
                                                                 ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (0);

  // Associate the object reference with the group reference.
  this->associate_group_with_ref (the_poa,
                                  the_ref,
                                  obj_ref.in ()
                                  ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (0);

  return obj_id._retn ();
}

int
TAO_POA_Hooks::find_group_component (const CORBA::Object_ptr the_ref,
                                     PortableGroup::TagGroupTaggedComponent &group)
{
  const TAO_MProfile& profiles = the_ref->_stubobj ()->base_profiles ();
  const TAO_Profile* profile;
  CORBA::ULong slot;

  // Iterate through the tagged profiles, and
  // create acceptors for the multicast ones.
  slot = 0;
  while ((profile = profiles.get_profile (slot)))
    {
      if (this->find_group_component_in_profile (profile, group) == 0)
        return 0;

      ++slot;
    }

  // Not found.
  return -1;
}

int
TAO_POA_Hooks::find_group_component_in_profile (const TAO_Profile* profile,
                                                PortableGroup::TagGroupTaggedComponent &group)
{
  // Iterate through the tagged components looking for
  // group tag.
  const TAO_Tagged_Components& components = profile->tagged_components ();

  IOP::TaggedComponent tagged_component;
  tagged_component.tag = IOP::TAG_GROUP;

  // Try to find it.
  if (components.get_component (tagged_component) == 0)
    return -1;

  // Found it.
  const CORBA::Octet *buf =
    tagged_component.component_data.get_buffer ();

  TAO_InputCDR in_cdr (ACE_reinterpret_cast (const char*, buf),
                       tagged_component.component_data.length ());

  // Extract the Byte Order.
  CORBA::Boolean byte_order;
  if ((in_cdr >> ACE_InputCDR::to_boolean (byte_order)) == 0)
    return -1;
  in_cdr.reset_byte_order (ACE_static_cast(int, byte_order));

  if ((in_cdr >> group) == 0)
    return -1;

  return 0;
}

int
TAO_POA_Hooks::create_group_acceptors (CORBA::Object_ptr the_ref,
                                       TAO_PortableGroup_Acceptor_Registry &acceptor_registry,
                                       TAO_ORB_Core &orb_core
                                       ACE_ENV_ARG_DECL)
{
  const TAO_MProfile& profiles = the_ref->_stubobj ()->base_profiles ();
  const TAO_Profile* profile;
  CORBA::ULong slot;
  int num = 0;

  // Iterate through the tagged profiles, and
  // create acceptors for the multicast ones.
  slot = 0;
  while ((profile = profiles.get_profile (slot)))
    {
      if (profile->supports_multicast ())
        {
          acceptor_registry.open (profile,
                                  orb_core
                                  ACE_ENV_ARG_PARAMETER);
          ACE_CHECK_RETURN (0);
          ++num;
        }

      ++slot;
    }

  // Return the number of acceptors registered.
  return num;
}


PortableServer::IDs *
TAO_POA_Hooks::reference_to_ids (
  TAO_POA &/*the_poa*/,
  CORBA::Object_ptr /*the_ref*/
    ACE_ENV_ARG_DECL_NOT_USED)
    ACE_THROW_SPEC ((
      CORBA::SystemException,
      PortableServer::NotAGroupObject
    ))
{

  return 0;
}

void
TAO_POA_Hooks::associate_group_with_ref (
      TAO_POA &the_poa,
      CORBA::Object_ptr group_ref,
      CORBA::Object_ptr obj_ref
      ACE_ENV_ARG_DECL)
    ACE_THROW_SPEC ((CORBA::SystemException,
                     PortableServer::NotAGroupObject))
{
  // Find the Group Component so that we can extract the Group ID.
  PortableGroup::TagGroupTaggedComponent *tmp_group_id;
  ACE_NEW_THROW_EX (tmp_group_id,
                    PortableGroup::TagGroupTaggedComponent,
                    CORBA::NO_MEMORY (
                      CORBA::SystemException::_tao_minor_code (
                        TAO_DEFAULT_MINOR_CODE,
                        ENOMEM),
                      CORBA::COMPLETED_NO));
  ACE_CHECK;

  PortableGroup::TagGroupTaggedComponent_var group_id = tmp_group_id;

  if (this->find_group_component (group_ref, group_id.inout ()) != 0)
    {
      // Group component wasn't found.  The group reference
      // that was passed in must be bogus.
      ACE_THROW (PortableServer::NotAGroupObject ());
    }

  // Create the acceptors necessary to receive requests for the
  // specified group reference.
  this->create_group_acceptors (group_ref,
                                this->request_dispatcher_.acceptor_registry_,
                                the_poa.orb_core ()
                                ACE_ENV_ARG_PARAMETER);

  ACE_CHECK;


  // Add a mapping from GroupId to Object key in the PortableGroup
  const TAO::ObjectKey &key = 
    obj_ref->_stubobj ()->profile_in_use ()->object_key ();
  this->request_dispatcher_.group_map_.add_groupid_objectkey_pair (
                                   group_id._retn (),
                                   key
                                   ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

}

void
TAO_POA_Hooks::associate_reference_with_id (
      TAO_POA &the_poa,
      CORBA::Object_ptr ref,
      const PortableServer::ObjectId & oid
      ACE_ENV_ARG_DECL)
    ACE_THROW_SPEC ((
      CORBA::SystemException,
      PortableServer::NotAGroupObject
    ))
{

  // Create a reference for the specified ObjectId, since
  // it is much easier to extract the object key from the
  // reference.
  CORBA::Object_var obj_ref = the_poa.id_to_reference (oid
                                                       ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  // Associate the object reference with the group reference.
  this->associate_group_with_ref (the_poa,
                                  ref,
                                  obj_ref.in ()
                                  ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;
}

void
TAO_POA_Hooks::disassociate_reference_with_id (
      TAO_POA &/*the_poa*/,
      CORBA::Object_ptr /*ref*/,
      const PortableServer::ObjectId & /*oid*/
      ACE_ENV_ARG_DECL_NOT_USED)
    ACE_THROW_SPEC ((
      CORBA::SystemException,
      PortableServer::NotAGroupObject
    ))
{
}

#endif  /* TAO_HAS_MINIMUM_POA == 0 */