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Open AccessArticle

A Rule-Based Language and Verification Framework of Dynamic Service Composition

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Department of Computer Sciences, Faculty of Sciences, University of Yaoundé I, P.O. Box 812 Yaoundé, Cameroon
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Department of Computer Sciences, National Advanced School of Engineering, University of Yaoundé I, P.O. Box 8390 Yaoundé, Cameroon
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Faculty of Information Technologies and Communication, Protestant University of Central Africa, P.O. Box 4011 Yaoundé, Cameroon
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Author to whom correspondence should be addressed.
Future Internet 2020, 12(2), 23; https://doi.org/10.3390/fi12020023
Received: 8 December 2019 / Revised: 16 January 2020 / Accepted: 23 January 2020 / Published: 26 January 2020
The emergence of BPML (Business Process Modeling Language) has favored the development of languages for the composition of services. Process-oriented approaches produce imperative languages, which are rigid to change at run-time because they focus on how the processes should be built. Despite the fact that semantics is introduced in languages to increase their flexibility, dynamism is limited to find services that have disappeared or become defective. They do not offer the possibility to adapt the composite service to execution. Although rules-based languages were introduced, they remain very much dependent on the BPML which is the underlying technology. This article proposes the specification of a rule-based declarative language for the composition of services. It consists of the syntactic categories which make up the concepts of the language and a formal description of the operational semantics that highlights the dynamism, the flexibility and the adaptability of the language thus defined. This paper also presents a verification framework made of a formal aspect and a toolset. The verification framework translates service specifications into Promela for model checking. Then, a validation framework is proposed that translates the verified specifications to the operational system. Finally, a case study is presented.
Keywords: rule-based approach; service choreography; flexibility by change; adaptability; DSL; model checking. rule-based approach; service choreography; flexibility by change; adaptability; DSL; model checking.
MDPI and ACS Style

Kungne, W.K.; Kouamou, G.-E.; Tangha, C. A Rule-Based Language and Verification Framework of Dynamic Service Composition. Future Internet 2020, 12, 23.

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