计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (3): 143-147.

• 网络、通信与安全 • 上一篇    下一篇

Web服务组合运行时的容错处理

张立敏1,高春鸣1,蔡美玲2   

  1. 1.湖南师范大学 数学与计算机科学学院,长沙 410081
    2.湖南涉外经济学院 计算机科学与技术学部,长沙 410081
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-01-21 发布日期:2008-01-21
  • 通讯作者: 张立敏

Fault-tolerant processing mechanism of Web service composition in run-time

ZHANG Li-min1,GAO Chun-ming1,CAI Mei-ling2   

  1. 1.College of Mathematics and Computer Science,Hunan Normal University,Changsha 410081,China
    2.Computer Science and Technology,Hunan International Economics University,Changsha 410081,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-01-21 Published:2008-01-21
  • Contact: ZHANG Li-min

摘要: 基于WebJet服务组合组装与运行平台,设计了一个基于反馈容错机制、支持Web服务组合运行时自动容错处理的基本框架。针对服务组合运行时的时间QoS质量和用户SLA计算容错选择因子,运用聚类算法确定容错边界值,提出容错处理的一般映射方法,并给出了故障处理及流程重构区域计算方法。系统支持流程在线自恢复,适应复杂的网络生态环境,为流程执行时业务功能与服务质量的保障提供了一种有效的机制。

关键词: 服务组合, 容错选择因子, 在线自恢复, 聚类算法

Abstract: Based on the WebJet service composite and assemble platform,the author designs one based on the feedback fault-tolerant mechanism,supported the run-time automatic fault-tolerant processing frame.Calculates the fault-tolerant choice factor in view of the service composition run-time’s QoS quality and user’s SLA,and uses clustering algorithm ascertain the fault-tolerant boundary value,proposes the fault-tolerant processing general mapping method,simultaneously gives the breakdown processing method and the flow restructured region computational method.System support flow restoration-online,adapted the complex network ecological environment,provide a kind of effective mechanism to guarantee both functionality and QoS of the workflow during execution.

Key words: service composition, fault-tolerant choice factor, restoration-online, clustering algorithm