Achieving autonomic Web service compositions with models at runtime

Several exceptional situations may arise in the complex, heterogeneous, and changing contexts where Web service operations run. For instance, a Web service operation may have greatly increased its execution time or may have become unavailable. The contribution of this article is to provide a tool-su...

Full description

Saved in:
Bibliographic Details
Published in:Computers & electrical engineering 2017-10, Vol.63, p.332-352
Main Authors: Alférez, Germán H., Pelechano, Vicente
Format: Article
Language:English
Subjects:
Architecture
Autonomic computing
Dynamic adaptation
Dynamic evolution
Dynamic software product lines
Evolution
Models at runtime
Run time (computers)
Web service compositions
Web services
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Several exceptional situations may arise in the complex, heterogeneous, and changing contexts where Web service operations run. For instance, a Web service operation may have greatly increased its execution time or may have become unavailable. The contribution of this article is to provide a tool-supported framework to guide autonomic adjustments of context-aware service compositions using models at runtime. During execution, when problematic events arise in the context, models are used by an autonomic architecture to guide changes of the service composition. Under the closed-world assumption, the possible context events are fully known at design time. Nevertheless, it is difficult to foresee all the possible situations arising in uncertain contexts where service compositions run. Therefore, the proposed framework also covers the dynamic evolution of service compositions to deal with unexpected events in the open world. An evaluation demonstrates that our framework is efficient during dynamic adjustments.
ISSN:0045-7906
1879-0755
DOI:10.1016/j.compeleceng.2017.08.004