计算机与数字工程2013，Vol.41Issue(8)：1377-1380,4.DOI:10.3969/j.issn.1672-9722.2013.08.052
基于AOP的Web服务失效恢复机制
Failure Recovery Mechanism for Web Service Based on Aspect-Oriented Programming
古凌岚1
作者信息
- 1. 广东轻工职业技术学院计算机工程系 广州 510300
- 折叠
摘要
Abstract
To solve the Web service composition runtime reliability problem that service failure bring,and eliminate failure recovery processing to interfere with the normal business logic.Limitations of BPEL engine built-in exception handling mechanism is analyzed.A failure recovery mechanism for Web service based on AOP is proposed.QoS is included in the service selection indicator,and candidate services previously obtained by querying the UDDI and QoS constraint filtering.The BPEL engine is extended by using aspect-oriented(AOP) technology.Fault-tolerant agent aspect intercepts request and invoke the service instance,replaces the invalid service with the equivalent service in candidate services.Reliability of service composition runtime is enhanced,and failure recovery processing is separated from the functional business logic.The feasibility and effectiveness of the method are validated by experiment.关键词
Web服务组合/服务失效/失效恢复/AOPKey words
Web service composition/ service failure/ failure recovery/ Aspect Oriented Programming(AOP)分类
信息技术与安全科学引用本文复制引用
古凌岚..基于AOP的Web服务失效恢复机制[J].计算机与数字工程,2013,41(8):1377-1380,4.
