文献类型：期刊文献

英文题名：Petri nets-based method to model and analyse the self-healing web service composition

作者：Chen, Liqiong[1,2]; Xiao, Lizhong[1]; Fan, Guisheng[3]; Zhang, Huanhuan[3]

机构：[1] Department of Computer Science and Information Engineering, Shanghai Institute of Technology, Shanghai, China; [2] Shanghai Key Laboratory of Computer Software Evaluating and Testing, Shanghai, China; [3] Department of Computer Science and Engineering, East China University of Science and Technology, Shanghai, China

年份：2016

卷号：9

期号：1-2

起止页码：8

外文期刊名：International Journal of High Performance Computing and Networking

收录：EI(收录号：20160801988216)

语种：英文

外文关键词：Web services - Quality of service - Semantics - Aspect oriented programming - Websites

摘要：Service composition is an important means for integrating the individual web services to create new value added systems that can satisfy complex requirements. Such applications are subject to unexpected failure owing to the distributive and heterogeneous environment of web service. In this paper, we propose a Petri nets-based method to model and analyse the self-healing service composition. Aspect oriented programming is used to extract composition processes and self-healing strategy as the core and crosscutting concerns. A self-healing strategy of component and service composition is proposed, and the related operations of self-healing are abstracted as meta-objects by using reflection mechanism. Petri nets are used to construct the base layer model, meta layer model, meta-object protocol and other components, thus forming the self-healing model. The operational semantics and related theories of Petri nets help prove its effectiveness and correctness. A simulation example shows that our approach correctly describes the self-healing process of service composition, and contributes to improving the quality. Copyright ? 2016 Inderscience Enterprises Ltd.