Non-functional analysis of service choreographies

“…«Q4Participants»), or whole choreography (i.e. «Q4Choreography») [21]. Q4BPMN supports several kinds of properties, which correspond to the class of properties inherited from the PMM meta-model.…”

Section: The Q4bpmn Notationmentioning

confidence: 99%

A Requirements-Led Approach for Specifying QoS-Aware Service Choreographies: An Experience Report

Maiden

Lockerbie

Zachos

et al. 2014

Requirements Engineering: Foundation for Software Quality

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link Abstract. [Context and motivation]Choreographies are a form of service composition in which partner services interact in a global scenario without a single point of control. The absence of an explicitly specified orchestration requires changes to requirements practices to recognize the need to optimize software services choreography and monitoring for satisfaction with system requirements. [Question/problem] We developed a requirements-led approach that aims to provide tools and processes to transform requirements expressed on service-based systems to QoS-aware choreography specifications. [Principal ideas/results] The approach is used by domain experts to specify natural language requirements on a service-based system, and by choreography designers to adapt their models to satisfy requirements more effectively. Non-functional requirements are mapped to BPMN choreography diagrams as quality properties, using the Q4BPMN notation, that support analysis and monitoring facilities.[Contribution] We report the new integrated approach and provide lessons learned from applying it to a real-world example of dynamic taxi management

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“…Within the CHOReOS IDRE, we are currently developing a Model-driven Engineering (MDE) framework for BPMN choreographies development [2]. In this framework, by leveraging the Q4BPMN model annotations, we also intend to exploit MDE techniques for automated analysis and monitoring of choreography QoS, as we show briefly in [3].…”

Section: Introductionmentioning

confidence: 99%

Apprehensive QoS monitoring of Service choreographies

Bartolini

Bertolino

Angelis

et al. 2013

Proceedings of the 28th Annual ACM Symposium on Applied Computing

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Service choreographies specify the intended interaction protocol among a set of cooperating services at the business application level. For end-users the non-functional properties exposed by a choreographed service composition can be as important as its functional behaviour, if not even more. Therefore, in any choreography development process, the capability of specifying and assessing the established Service Level Agreements (SLAs) becomes a crucial requisite. However, by their very nature, choreography requirements can be quite abstract and may on purpose avoid formalizing non-functional properties for every step of each individual service, nonetheless the overall QoS choreography will be affected by them. In this paper, we propose a monitor enhanced with the capability to detect potential deviations from a choreography-prescribed QoS level, based on the observed non-functional behaviour of the contributing services. Such an apprehensive monitor, as we call it, can thus contribute to predict SLA violations in due time for taking useful counter-measures, and not only detect them after they have occurred. We illustrate the feasibility of the approach on a use-case from the European Project CHOReOS.

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Non-functional analysis of service choreographies

Cited by 8 publications

References 11 publications

Designing service-based applications in the presence of non-functional properties: A mapping study

Designing service-based applications in the presence of non-functional properties: A mapping study

A Requirements-Led Approach for Specifying QoS-Aware Service Choreographies: An Experience Report

Apprehensive QoS monitoring of Service choreographies

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