Towards a resilient service oriented computing based on ad-hoc web service compositions in dynamic environments

Abstract : Due to the distributed and asynchronous nature of Web services, the Web service composition process plays an important role in achieving SOC. In dynamic environments by which contextual information such as Web service properties and composition requirements often change, the composition process is thus affected and, consequently, should be able to adapt composite applications to changes at design time and runtime. Un-fortunately, current Service-Oriented Architecture (SOA) and Web service composition approaches lack of the ability to deal with continuous and un-predictable changes. Building resilient service-oriented architectures that are adaptable to endogenous and exogenous changes in dynamic environments reveal a drastic challenge to current composition processes. In addition, current composition processes provide a limited support for business users to specify their requirements in business languages to automatically compose business processes (i.e., composite services). By such, the gap be-tween business requirements and composition requirements related to Web services increases the complexity of developing adaptable SOA-based ap-plications and processes in dynamic environments. To overcome these challenges, we introduce the concept of Resili-ent Service-Oriented Computing (rSOC) to construct resilient SOA-based applications driven by business requirements in dynamic environments. To this end, the resilient SOA is defined as a set of models that affect and are affected by each other, and relies on a model-to-model transformation ap-proach to ensure SOA adaptability and evolution. In this thesis, we particu-larly focus on two models: a three-level composition requirement model and a Web service composition model, to establish the foundation for a re-silient SOA as follows: firstly, composition requirements are modeled in three levels, i.e., business-centric, capability-focused and rule-driven. Par-ticularly the business-centric requirement model provides business users with a structured natural language to specify requirements; secondly, a two-phase requirement transformation process builds the rule-driven Web ser-vice composition requirement model from the business-centric requirement model as set of composition rules, expressing multi-objective constraints that affect the composition process and its dynamic environment; thirdly, an ad-hoc Web service composition approach is introduced to flexibly con-struct composite services without predefined composition plans. Particularly, composition rules generated in composition process may affect other model(s) in the resilient SOA, such as composition requirement model, and recursively invoke the model-to-model transformation approach to replan the ad-hoc Web service composition approach.
Document type :
Theses
Complete list of metadatas

Cited literature [112 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-01077947
Contributor : Abes Star <>
Submitted on : Monday, October 27, 2014 - 2:50:49 PM
Last modification on : Friday, May 17, 2019 - 10:20:52 AM
Long-term archiving on : Wednesday, January 28, 2015 - 11:26:21 AM

File

these.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01077947, version 1

Citation

Wenbin Li. Towards a resilient service oriented computing based on ad-hoc web service compositions in dynamic environments. Engineering Sciences [physics]. INSA de Lyon, 2014. English. ⟨NNT : 2014ISAL0032⟩. ⟨tel-01077947⟩

Share

Metrics

Record views

358

Files downloads

496