ChangeLogTag:Fri Jun 28 18:08:18 2002 Ossama Othman <ossama@uci.edu>

1 files changed, 89 insertions, 0 deletions

diff --git a/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_MemberLocator.h b/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_MemberLocator.h
new file mode 100644
index 00000000000..b664866cec9
--- /dev/null
+++ b/TAO/orbsvcs/orbsvcs/LoadBalancing/LB_MemberLocator.h
@@ -0,0 +1,89 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file LB_MemberLocator.h
+ *
+ *  $Id$
+ *
+ *  @author Ossama Othman <ossama@uci.edu>
+ */
+//=============================================================================
+
+
+#ifndef TAO_LB_MEMBER_LOCATOR_H
+#define TAO_LB_MEMBER_LOCATOR_H
+
+#include "ace/pre.h"
+
+#include "ace/config-all.h"
+
+# if !defined (ACE_LACKS_PRAGMA_ONCE)
+#   pragma once
+# endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "tao/PortableServer/PortableServerC.h"
+#include "tao/LocalObject.h"
+
+// Forward declarations.
+class TAO_LB_LoadManager;
+
+
+/**
+ * @class TAO_LB_MemberLocator
+ *
+ * @brief ServantLocator implementation for the Load Balancer.
+ *
+ * This is a Servant Locator implementation that forwards requests to
+ * a member returned by the Load Balancer.
+ */
+class TAO_LB_MemberLocator
+  : public virtual PortableServer::ServantLocator,
+    public virtual TAO_Local_RefCounted_Object
+{
+public:
+
+  /// Constructor
+  TAO_LB_MemberLocator (TAO_LB_LoadManager * load_balancer);
+
+  /**
+   * @name The PortableServer::ServantLocator methods.
+   *
+   * Methods required by the PortableServer::ServantLocator
+   * interface.
+   */
+  //@{
+
+  /// Clients requests are forwarded via the
+  /// PortableServer::ForwardRequest exception thrown in this method.
+  virtual PortableServer::Servant preinvoke (
+      const PortableServer::ObjectId & oid,
+      PortableServer::POA_ptr adapter,
+      const char * operation,
+      PortableServer::ServantLocator::Cookie & the_cookie
+      ACE_ENV_ARG_DECL)
+    ACE_THROW_SPEC ((CORBA::SystemException,
+                     PortableServer::ForwardRequest));
+
+  /// This method is no-op in this ServantLocator implementation.
+  virtual void postinvoke (
+      const PortableServer::ObjectId &oid,
+      PortableServer::POA_ptr adapter,
+      const char * operation,
+      PortableServer::ServantLocator::Cookie the_cookie,
+      PortableServer::Servant the_servant
+      ACE_ENV_ARG_DECL)
+    ACE_THROW_SPEC ((CORBA::SystemException));
+
+  //@}
+
+private:
+
+  /// The load balancer/manager implementation.
+  TAO_LB_LoadManager * load_manager_;
+
+};
+
+#include "ace/post.h"
+
+#endif  /* TAO_LB_MEMBER_LOCATOR_H */