Research directions in reflective middleware

Blair, Gordon S.; Coulson, Geoff; Grace, Paul

doi:10.1145/1028613.1028627

Cited by 30 publications

(21 citation statements)

References 15 publications

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“…However, the principles of computational reflection are also applicable to programming-in-the-large, which represents the complex self-adaptive software systems we are interested in our research [Andersson et al 2009b]. In fact, numerous previously developed self-adaptation approaches (e.g., [Cazzola et al 1999;Tisato et al 2001;Blair et al 2004]) are based on the principles of reflection. Figure 1 provides an overview of the FORMS's primitives and their relationships to the reflection perspective.…”

Section: Reflection Perspectivementioning

confidence: 99%

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Weyns

Malek

Andersson

2012

ACM Trans. Auton. Adapt. Syst.

142

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The challenges of pervasive and mobile computing environments, which are highly dynamic and unpredictable, have motivated the development of self-adaptive software systems. Although noteworthy successes have been achieved on many fronts, the construction of such systems remains significantly more challenging than traditional systems. We argue this is partially because researchers and practitioners have been struggling with the lack of a precise vocabulary for describing and reasoning about the key architectural characteristics of self-adaptive systems. Further exacerbating the situation is the fact that existing frameworks and guidelines do not provide an encompassing perspective of the different types of concerns in this setting. In this paper, we present a comprehensive reference model, entitled FOrmal Reference Model for Self-adaptation (FORMS), that targets both issues. FORMS provides rigor in the manner such systems can be described and reasoned about. It consists of a small number of formally specified modeling elements that correspond to the key concerns in the design of self-adaptive software systems, and a set of relationships that guide their composition. We demonstrate FORMS's ability to precisely describe and reason about the architectural characteristics of distributed self-adaptive software systems through its application to several existing systems. FORMS's expressive power gives it a potential for documenting reusable architectural solutions (e.g., architectural patterns) to commonly encountered problems in this area.

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Section: Reflection Perspectivementioning

confidence: 99%

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Weyns

Malek

Andersson

2012

ACM Trans. Auton. Adapt. Syst.

142

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“…Finally, [6] considers the use of reflective middleware to develop self-managing systems as a challenging research direction. More specifically, they target platforms where both middleware and applications are built with reflective autonomic components.…”

Section: Related Workmentioning

confidence: 99%

Using components for architecture-based management

Sicard

Boyer

Palma³

2008

Proceedings of the 13th International Conference on Software Engineering - ICSE '08

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Components are widely used for managing distributed applications because they not only capture the software architecture of managed applications as an assembly of components but also permit to dynamically adapt these applications to changing environments. Following this approach, our practical experience in the Jade environment about developing an autonomic repair management service with a self-healing behavior shows novel requirements on reflective component models for architecture-based management systems. First, we have identified five essential runtime abstractions that a component model must include in order to efficiently support an autonomic repair service. Second, our experience suggests that traditional reflective component models should be extended to allow specializing meta-operations. Third, our experience also shows that a meta-data checkpointing capability is best-suited for meta-data recovery after failures. We demonstrate the soundness of these findings in several ways. We applied the difficult problem of autonomic repair to both J2EE and JMS middleware. We further stressed our algorithms and mechanisms by applying them recursively towards gaining a self-healing property for the repair service itself. Although our experience was done in the Jade context, using the Fractal component model, we believe our findings to be general to architecture-based management systems using reflective component models.

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“…For architectural adaptation, we are investigating middleware reconfiguration techniques such as [3]. Of particular interest is enhancing the current work on architectural reflection via the use of "overlay networks" as component frameworks in the system, so that reconfigurability of the core messaging and networking functionality itself can be achieved.…”

Section: Representing and Modeling Adaptationmentioning

confidence: 99%

Towards service orientation in pervasive computing systems

Bellur

Narendra²

2005

International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume II

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The emergence of the service-oriented computing paradigm has opened the possibility of using dynamic binding of application requirements to the resources needed to fulfill application tasks. Especially in pervasive computing that is characterized by disconnected operation and mobility, the process of using service specifications and dynamic binding becomes critical. In this paper, we summarize our ongoing work in the area of integrating service orientation into pervasive computing using the notion of specifying service requirements and using these specifications to bind to the available resources dynamically instead of hardwiring them statically. We term these specifications programmable requirements since they can be interpreted at run time to bind to a resource satisfying those specifications. Interestingly this approach also satisfies the basis for two key types of adaptation prevalent in pervasive computing systems -functional and architectural -as we show in this paper.

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Research directions in reflective middleware

Cited by 30 publications

References 15 publications

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Using components for architecture-based management

Towards service orientation in pervasive computing systems

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