% $Id: extended.txt 12669 2008-05-05 14:50:39Z amoghk $

Title: Templatized Model Transformations for Middleware QoS
Configuration of Heterogeneous DRE Systems

Authors:  Amogh Kavimandan and Aniruddha Gokhale
          Vanderbilt University
          Email: {amoghk,gokhale}@dre.vanderbilt.edu

The trend towards open and component-based architectures for distributed,
real-time and embedded (DRE) systems has influenced significant research 
in model-driven engineering (MDE) tools to considerably improve
DRE systems developer productivity and realize correct-by-construction DRE
systems. Recent successes in MDE for component middleware-based DRE 
systems include composition, deployment planning, and synthesis of
runtime controllers for dynamic quality of service (QoS) and resource 
management. 

Recently MDE has been successfully applied to performing automated 
middleware QoS configuration which involves identifying the correct
subset of configuration options and choosing appropriate, compatible
values to each of the option to meet the system QoS requirements. In
particular, this approach relies on using graph transformations on
domain-specific, platform-independent models of DRE system QoS
requirements to automatically map them into more refined, detailed, and
valid platform-specific  configuration models.

Large-scale DRE systems, however, are quite often heterogeneous i.e.,
they are composed of several interconnected and interacting sub-systems
developed hosted potentially on different middleware platforms.  To
achieve the desired DRE system QoS, its QoS requirements must be
correctly mapped to QoS configuration options of the middleware used in
each of its sub-systems. Further, middleware QoS configuration must be
performed both at individual sub-system level, as well as at the global
application level before the system can be deployed. Existing model
transformation techniques force the developers to design and maintain
multiple transformation mappings when a single source model must be
translated into a class  of target models and are thus inadequate for
QoS configuration of heterogeneous DRE systems.

In this presentation we describe Model Transformation Specializations
(MTS), which is a novel model transformation technique that overcomes
these challenges by supporting the  concept of templatized model
transformations and their subsequent specializations.  Using MTS the
variabilities of each target model can easily be captured as models (as
opposed to transformation rules), which are later provided as arguments
to the templatized transformation for instantiating mappings for that
target. The principles and techniques supported by MTS can be
implemented on existing model transformation tool suites.  The talk will
discuss how we have applied MTS for automated middleware configurations
of a heterogeneous DRE system in the context of publish/subscribe
communication semantics, such as OMG DDS and CCM Real-time publish/subscribe
service.


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Poster abstract sent on May 5th, 2008.

In this presentation, we describe Model Transformations Templatization 
and Specialization (MTS), which is a novel model transformation 
technique that overcomes the challenges of middleware quality of 
service (QoS) configuration for heterogeneous distributed, real-time
systems by supporting the  concept of templatized model
transformations and their subsequent specializations.  Using MTS the
variabilities of each target platform model can easily be captured as models (as
opposed to transformation rules), which are later provided as arguments
to the templatized transformation for instantiating mappings for that
target platform. The principles and techniques supported by MTS can be
implemented on existing model transformation tool suites.  The presentation will
discuss how we have applied MTS in the context of publish/subscribe
communication semantics, such as CCM real-time publish/subscribe
service.