Patterns for Coordination

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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“…This is a commonly accepted structure for coordination mechanisms, see for example [Andrade et al 2000] and [Arbab 2004].…”

Section: Unification With Distribution Perspectivementioning

confidence: 99%

Forms

Weyns

Malek

Andersson

2012

ACM Trans. Auton. Adapt. Syst.

141

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“…Another approach uses collaboration contracts [9] which are more flexible since collaboration rules can be dynamically updated.…”

Section: Coordination Components and Languagesmentioning

confidence: 99%

“…Most coordination models rely on an explicit interface of components being coordinated [8,9] but some use introspection and metaprogramming features to coordinate components that hide their interface [6].…”

Section: Coordination Components and Languagesmentioning

confidence: 99%

An architecture and a process for implementing distributed collaborations

Cariou¹,

Beugnard²,

Jézéquel³

Proceedings. Sixth International Enterprise Distributed Object Computing

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“…For a more detailed description of coordination contracts, the reader is urged to consult [1,2,3,5]. In what follows, we give a short example of how contracts can support evolution in a telecommunications transaction processing system.…”

Section: Coordination Contractsmentioning

confidence: 99%

“…Our aim in this paper is to show how such principles can be supported, in practice, on current working environments. More precisely, we follow up a strategy that we outlined in [3,5] and propose and analyse a Design Pattern as the main technique to implement coordination contracts.…”

Section: Introductionmentioning

confidence: 99%