CORBA::Object_ptr TAO::Object_Group_Creator::create_infrastructure_managed_group (
const char * type_id)
{
CORBA::Object_var group = CORBA::Object::_nil ();
if (this->have_replication_manager_)
{
// set typeid properties
PortableGroup::Properties properties (1);
properties.length (3);
properties[0].nam.length (1);
properties[0].nam[0].id = PortableGroup::PG_MEMBERSHIP_STYLE;
properties[0].val <<= PortableGroup::MEMB_INF_CTRL;
PortableGroup::InitialNumberMembersValue inm(2);
properties[1].nam.length (1);
properties[1].nam[0].id = PortableGroup::PG_INITIAL_NUMBER_MEMBERS;
properties[1].val <<= inm;
PortableGroup::MinimumNumberMembersValue mnm(1);
properties[2].nam.length (1);
properties[2].nam[0].id = PortableGroup::PG_MINIMUM_NUMBER_MEMBERS;
properties[2].val <<= mnm;
this->replication_manager_->set_type_properties (
type_id,
properties);
::PortableGroup::GenericFactory::FactoryCreationId_var creation_id;
PortableGroup::Criteria criteria (1);
criteria.length (1);
criteria[0].nam.length (1);
criteria[0].nam[0].id = PortableGroup::PG_MEMBERSHIP_STYLE;
criteria[0].val <<= PortableGroup::MEMB_APP_CTRL;
group = this->replication_manager_->create_object (
type_id,
criteria,
creation_id
);
}
else
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT("%T %n (%P|%t): Object_Group_Creator: infrastructure managed group requires Replication Manager\n")
));
}
return group._retn ();
}
PortableGroup::ObjectGroup_ptr
TAO_PG_ObjectGroupManager::create_object_group (
CORBA::ULong group_id,
const PortableServer::ObjectId &oid,
const char * type_id,
const PortableGroup::Criteria & the_criteria)
{
if (CORBA::is_nil (this->poa_.in ()))
throw CORBA::INTERNAL ();
// Create a reference for the ObjectGroup corresponding to the
// RepositoryId of the object being created.
CORBA::Object_var object_group =
this->poa_->create_reference_with_id (oid,
type_id);
TAO_PG_ObjectGroup_Map_Entry * group_entry = 0;
ACE_NEW_THROW_EX (group_entry,
TAO_PG_ObjectGroup_Map_Entry,
CORBA::NO_MEMORY (
CORBA::SystemException::_tao_minor_code (
TAO::VMCID,
ENOMEM),
CORBA::COMPLETED_NO));
auto_ptr<TAO_PG_ObjectGroup_Map_Entry> safe_group_entry (group_entry);
// Set the RepositoryId associated with the created ObjectGroup_Map
// entry.
group_entry->type_id = CORBA::string_dup (type_id);
group_entry->group_id = group_id;
group_entry->object_group = object_group;
CORBA::ULong len = the_criteria.length ();
group_entry->properties.length (len);
for (CORBA::ULong i = 0; i < len; ++i)
group_entry->properties[i] = the_criteria[i];
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX,
guard,
this->lock_,
0);
if (this->object_group_map_.bind (oid, group_entry) != 0)
throw PortableGroup::ObjectNotCreated ();
}
(void) safe_group_entry.release ();
return object_group._retn ();
}
int
LB_server::create_object_group (void)
{
try
{
const char *repository_id = "IDL:Test/Basic:1.0";
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;
this->object_group_ = this->lm_->create_object (repository_id,
criteria,
this->fcid_.out ());
CORBA::String_var ior =
this->orb_->object_to_string (this->object_group_.in ());
this->write_ior_to_file (ior.in ());
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception (
"Exception raised while creating object group");
return -1;
}
return 1;
}
CORBA::Object_ptr TAO::Object_Group_Creator::create_group (
const char * role,
int write_iors)
{
CORBA::Object_var group = CORBA::Object::_nil ();
PortableGroup::ObjectGroupId group_id = 0;
CORBA::String_var type_id;
::PortableGroup::FactoryInfos_var infos = this->registry_->list_factories_by_role (role, type_id);
CORBA::ULong count = infos->length ();
ACE_ERROR ((LM_INFO,
ACE_TEXT ("%T %n (%P|%t): Object_Group_Creator: ")
ACE_TEXT ("found %u factories for %s : %s\n"),
static_cast<unsigned> (count),
role,
type_id.in ()));
if (count > 0)
{
///////////////////////////
// Begin with an empty IOGR
::PortableGroup::GenericFactory::FactoryCreationId_var creation_id;
if (this->have_replication_manager_)
{
//////////////////////////////////////////////////////
// note infrastructure controlled because we want the
// ReplicationManager to manage the object after it's created.
// Initial number members = 0 because we do not want the Replication
// Manager to populate the group.
// Minimum number of members = 0 because we do not want the
// Replication Manager to replace failed members.
// Semi-active, because that's what we do.
PortableGroup::Criteria criteria (3);
criteria.length (4);
criteria[0].nam.length (1);
criteria[0].nam[0].id = PortableGroup::PG_MEMBERSHIP_STYLE;
criteria[0].val <<= PortableGroup::MEMB_INF_CTRL;
criteria[1].nam.length (1);
criteria[1].nam[0].id = PortableGroup::PG_INITIAL_NUMBER_MEMBERS;
criteria[1].val <<= PortableGroup::InitialNumberMembersValue (0);
criteria[2].nam.length (1);
criteria[2].nam[0].id = PortableGroup::PG_MINIMUM_NUMBER_MEMBERS;
criteria[2].val <<= PortableGroup::MinimumNumberMembersValue (0);
criteria[3].nam.length (1);
criteria[3].nam[0].id = FT::FT_REPLICATION_STYLE;
criteria[3].val <<= FT::SEMI_ACTIVE;
group = this->replication_manager_->create_object (
type_id.in (),
criteria,
creation_id
);
//@@ this is a bit of a hack
creation_id >>= group_id;
}
CORBA::Object_ptr
join_object_group (CORBA::ORB_ptr orb,
CosLoadBalancing::LoadManager_ptr lm,
const PortableGroup::Location & location)
{
CORBA::Object_var ns_object =
orb->resolve_initial_references ("NameService");
CosNaming::NamingContext_var nc =
CosNaming::NamingContext::_narrow (ns_object.in ());
CosNaming::Name name (1);
name.length (1);
name[0].id = "RoundtripObjectGroup";
name[0].kind = "Object Group";
CORBA::Object_var group;
try
{
group = nc->resolve (name);
}
catch (const CosNaming::NamingContext::NotFound& )
{
// Object group not created. Create one.
const char repository_id[] = "IDL:Test/Roundtrip:1.0";
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;
PortableGroup::GenericFactory::FactoryCreationId_var fcid;
group = lm->create_object (repository_id,
criteria,
fcid.out ());
try
{
nc->bind (name,
group.in ());
PortableGroup::Properties props (1);
props.length (1);
props[0].nam.length (1);
props[0].nam[0].id =
CORBA::string_dup ("org.omg.CosLoadBalancing.StrategyInfo");
CosLoadBalancing::StrategyInfo strategy_info;
strategy_info.name = CORBA::string_dup (strategy);
if (ACE_OS::strcasecmp (strategy, "LeastLoaded") == 0
&& (reject_threshold != 0
|| critical_threshold != 0
|| dampening != 0))
{
CORBA::ULong len = 1;
PortableGroup::Properties & props =
strategy_info.props;
if (reject_threshold != 0)
{
const CORBA::ULong i = len - 1;
props.length (len++);
props[i].nam.length (1);
props[i].nam[0].id =
CORBA::string_dup ("org.omg.CosLoadBalancing.Strategy.LeastLoaded.RejectThreshold");
props[i].val <<= reject_threshold;
}
if (critical_threshold != 0)
{
const CORBA::ULong i = len - 1;
props.length (len++);
props[i].nam.length (1);
props[i].nam[0].id =
CORBA::string_dup ("org.omg.CosLoadBalancing.Strategy.LeastLoaded.CriticalThreshold");
props[i].val <<= critical_threshold;
}
if (dampening != 0)
{
const CORBA::ULong i = len - 1;
props.length (len++);
props[i].nam.length (1);
props[i].nam[0].id =
CORBA::string_dup ("org.omg.CosLoadBalancing.Strategy.LeastLoaded.Dampening");
props[i].val <<= dampening;
}
}
props[0].val <<= strategy_info;
lm->set_default_properties (props);
}
catch (const CosNaming::NamingContext::AlreadyBound& )
{
// Somebody beat us to creating the object group. Clean up
// the one we created.
lm->delete_object (fcid.in ());
group = nc->resolve (name);
}
}
Roundtrip * roundtrip_impl;
ACE_NEW_THROW_EX (roundtrip_impl,
Roundtrip (orb),
CORBA::NO_MEMORY ());
PortableServer::ServantBase_var owner_transfer (roundtrip_impl);
Test::Roundtrip_var roundtrip =
roundtrip_impl->_this ();
group = lm->add_member (group.in (),
location,
roundtrip.in ());
return group._retn ();
}
int
NS_group_svc::group_create (
const ACE_TCHAR* group_name,
const ACE_TCHAR* policy )
{
if (group_name == 0 || policy == 0 )
{
ORBSVCS_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("group_create args not provided\n")),
-2);
}
/// Validate load balancing strategy policy string
FT_Naming::LoadBalancingStrategyValue strategy;
if (false == determine_policy_string (policy, strategy))
{
ORBSVCS_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%s is not a valid policy.\n"),
policy),
-2);
}
try
{
/// Verify that the group does not already exist
/// Group names must be unique
if ( true == group_exist (group_name))
{
ORBSVCS_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Group %s already exists\n"),
group_name),
-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 ()))
{
ORBSVCS_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("\nUnable to create group %s.\n"),
group_name),
-1);
}
}
catch (const CORBA::Exception&)
{
ORBSVCS_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("\nUnable to create group %s\n"),
group_name),
-1);
}
return 0;
}
CORBA::Boolean
TAO_LB_ObjectReferenceFactory::find_object_group (
const char * repository_id,
CORBA::ULong & index,
PortableGroup::ObjectGroup_out object_group)
{
if (!this->load_managed_object (repository_id, index))
return false;
PortableGroup::ObjectGroup_var group;
if (this->table_.find (repository_id, group) != 0)
{
if (ACE_OS::strcasecmp (this->object_groups_[index],
"CREATE") == 0)
{
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");
// Configure for application-controlled membership.
PortableGroup::MembershipStyleValue msv =
PortableGroup::MEMB_APP_CTRL;
property.val <<= msv;
PortableGroup::GenericFactory::FactoryCreationId_var fcid;
group =
this->lm_->create_object (repository_id,
criteria,
fcid.out ());
CORBA::ULong const len = this->fcids_.size ();
this->fcids_.size (len + 1); // Incremental growth. Yuck!
this->fcids_[len] = fcid;
}
else
{
group =
this->orb_->string_to_object (this->object_groups_[index]);
}
if (this->table_.bind (repository_id, group) != 0)
{
if (TAO_debug_level > 0)
ORBSVCS_ERROR ((LM_ERROR,
"TAO_LB_ObjectReferenceFactory::"
"find_object_group - "
"Couldn't bind object group reference.\n"));
throw CORBA::INTERNAL ();
}
object_group = group._retn ();
}
return 1;
}
