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Diffstat (limited to 'ACE/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_ObjectReferenceFactory.h')
-rw-r--r-- | ACE/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_ObjectReferenceFactory.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/ACE/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_ObjectReferenceFactory.h b/ACE/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_ObjectReferenceFactory.h new file mode 100644 index 00000000000..583e0674000 --- /dev/null +++ b/ACE/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_ObjectReferenceFactory.h @@ -0,0 +1,176 @@ +// -*- C++ -*- + +//============================================================================= +/** + * @file LB_ObjectReferenceFactory.h + * + * $Id$ + + * @author Ossama Othman <ossama@uci.edu> + */ +//============================================================================= + +#ifndef TAO_LB_OBJECT_REFERENCE_FACTORY_H +#define TAO_LB_OBJECT_REFERENCE_FACTORY_H + +#include /**/ "ace/pre.h" + +#include "orbsvcs/LB_ORTC.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +# pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#if defined(_MSC_VER) +#pragma warning(push) +#pragma warning(disable:4250) +#endif /* _MSC_VER */ + +#include "orbsvcs/CosLoadBalancingC.h" + +#include "ace/Array_Base.h" +#include "ace/Hash_Map_Manager_T.h" +#include "ace/Null_Mutex.h" +#include "ace/SString.h" + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +/** + * @class TAO_LB_ObjectReferenceFactory + * + * @brief Implementation of the PortableInterceptor::ObjectReferenceFactory + * interface. + * + * This ObjectReferenceFactory creates an object group for a member of + * the given repository ID (if instructed to do so), creates an + * "unpublished" reference for that member, and adds it to the object + * group via the LoadManager. + */ +class TAO_LB_ObjectReferenceFactory + : public virtual CORBA::DefaultValueRefCountBase + , public virtual OBV_TAO_LB::ObjectReferenceFactory +{ + public: + + /// Constructor + TAO_LB_ObjectReferenceFactory ( + PortableInterceptor::ObjectReferenceFactory * old_orf, + const CORBA::StringSeq & object_groups, + const CORBA::StringSeq & repository_ids, + const char * location, + CORBA::ORB_ptr orb, + CosLoadBalancing::LoadManager_ptr lm); + + /** + * @name PortableInterceptor::ObjectReferenceFactory Methods + * + * Methods required by the + * PortableInterceptor::ObjectReferenceFactory interface. + */ + //@{ + virtual CORBA::Object_ptr make_object ( + const char * repository_id, + const PortableInterceptor::ObjectId & id); + //@} + + + typedef ACE_Hash_Map_Manager_Ex< + ACE_CString, + PortableGroup::ObjectGroup_var, + ACE_Hash<ACE_CString>, + ACE_Equal_To<ACE_CString>, + ACE_Null_Mutex> Table; + + typedef ACE_Array_Base< + PortableGroup::GenericFactory::FactoryCreationId_var> fcid_list; + +protected: + + /// Destructor + /** + * Protected destructor to enforce proper memory management via + * reference counting. + */ + ~TAO_LB_ObjectReferenceFactory (void); + + /// Retrieve the object group reference for objects with the given + /// RepositoryId. + CORBA::Boolean find_object_group (const char * repository_id, + CORBA::ULong & index, + PortableGroup::ObjectGroup_out object_group); + + /// Determine if object with given RepositoryId is load managed. + CORBA::Boolean load_managed_object (const char * repository_id, + CORBA::ULong & i); + +private: + + /// The old ObjectReferenceFactory used to create object references. + /** + * This ObjectReferenceFactory will be used when creating object + * references for non-load balanced objects. + */ + PortableInterceptor::ObjectReferenceFactory_var old_orf_; + + + /// List of stringified object group references. + /** + * All stringified object groups in this sequence have a one-to-one + * correspondence to the repository IDs found in the repository_ids_ + * member below. + * + * @par + * + * The special string "CREATE" denotes that creation of a new object + * group should be performed. + */ + const CORBA::StringSeq object_groups_; + + /// List of RepositoryIds for object that will be load + /// managed/balanced. + /** + * All RepositoryIds in this sequence have a one-to-one + * correspondence to the stringified object references found in the + * object_groups_ member above. + */ + const CORBA::StringSeq repository_ids_; + + /// The configured location for the server within which this + /// ObjectReferenceFactory resides. + PortableGroup::Location location_; + + /// Table that maps repository ID to (non-stringified) object group + /// reference. + Table table_; + + /// List of FactoryCreationIds that will later be used to destroy + /// object groups. + fcid_list fcids_; + + /// Pseudo-reference to the ORB. + CORBA::ORB_var orb_; + + /// Reference to the LoadManager object. + CosLoadBalancing::LoadManager_var lm_; + + /// Array of flags that denotes whether or not an object group + /// member of a given RepositoryId has been registered with the + /// LoadManager. + /** + * The values are cached here to avoid querying the LoadManager, + * which can be costly. + */ + CORBA::Boolean * registered_members_; + +}; + +TAO_END_VERSIONED_NAMESPACE_DECL + + +#if defined (_MSC_VER) +#pragma warning(pop) +#endif /* _MSC_VER */ + +#include /**/ "ace/post.h" + +#endif /* TAO_LB_OBJECT_REFERENCE_FACTORY_H */ |