Reliable, Secure, and Transacted Web Service Compositions with AO4BPEL

2006 European Conference on Web Services (ECOWS'06) Pub Date : 2006-12-04 DOI:10.1109/ECOWS.2006.32

A. Charfi, Benjamin Schmeling, Andreas Heizenreder, M. Mezini

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引用次数: 57

Abstract

Web service compositions in BPEL have several nonfunctional requirements such as security, reliable messaging, and transactions. Although many WS-* specifications address such non-functional concerns in the Web service context, they focus only on the messaging-level requirements without addressing the process-level requirements. In this paper, we discuss different non-functional requirements in BPEL workflows and observe that current orchestration engines lack support for the specification and enforcement of such requirements, especially for process-level requirements. To solve this problem, we present a container framework, which introduces an XML-based deployment descriptor to specify the non-functional requirements in a declarative way. To enforce these requirements, a process container intercepts the process execution and calls dedicated middleware Web services. We implemented the process container as a lightweight container using a set of A04BPEL aspects that are automatically generated from the deployment descriptor. In addition, we have implemented BPEL middleware Web services for reliable messaging, security, and transaction

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使用AO4BPEL的可靠、安全和事务化的Web服务组合

BPEL中的Web服务组合有几个非功能性需求，比如安全性、可靠的消息传递和事务。尽管许多WS-*规范在Web服务上下文中解决了此类非功能问题，但它们只关注消息级需求，而没有解决流程级需求。在本文中，我们讨论了BPEL工作流中的不同非功能需求，并注意到当前的编排引擎缺乏对此类需求的规范和实施的支持，尤其是对流程级需求。为了解决这个问题，我们提出了一个容器框架，它引入了一个基于xml的部署描述符，以声明的方式指定非功能需求。为了实现这些需求，流程容器会拦截流程执行并调用专用中间件Web服务。我们使用一组从部署描述符自动生成的A04BPEL方面将流程容器实现为轻量级容器。此外，我们还实现了用于可靠消息传递、安全性和事务的BPEL中间件Web服务

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2006 European Conference on Web Services (ECOWS'06)

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