Title: Temporal impact analysis and adaptation for service-based systems

Authors: Sridevi Saralaya; Rio G. D'Souza; Vishwas Saralaya

Addresses: Department of Computer Science and Engineering, St. Joseph Engineering College, Vamanjoor, 575008 Mangaluru, India ' Department of Computer Science and Engineering, St. Joseph Engineering College, Vamanjoor, 575008 Mangaluru, India ' Department of Microbiology, Kasturba Medical College, Manipal University, Light House Hill Road, 575001 Mangaluru, India

Abstract: Temporality is an influential aspect of service-based systems (SBS). Inability of a service to achieve time requirements may lead to violation of service-level agreements (SLA's) in a SBS. Such non-conformity by a service may introduce temporal inconsistency between dependent services and the composition. The temporal impact of the anomaly on related services and also the composition will need to be identified if SLA violations have to be rectified. Existing studies concentrate on impact analysis due to web service evolution or changes to a web service. There is a huge lacunae regarding studies on impact of time delay on temporal constraints of dependent services and obligations of business process. Although reconfiguration of SBS to overcome failures is extensively addressed, reconfiguration triggered due to temporal delay is not well explored. In this study, we try to fill the gap between reconfiguration and impact analysis invoked due to temporal violations. Once the impacted region and the amount of temporal deviation to the business process are known, we try recovery by localising the reconfiguration of services to the impacted zone.

Keywords: service-based systems; SBS; impact-analysis; proactive adaptation; reactive adaptation; reconfiguration; cross-layer adaptation; SLA violation handling; anomaly handling; service-based applications; SBAs.

DOI: 10.1504/IJICT.2019.101861

International Journal of Information and Communication Technology, 2019 Vol.14 No.4, pp.403 - 426

Accepted: 20 Oct 2017
Published online: 23 Aug 2019 *

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