Using interaction models to detect and resolve inconsistencies in evolving service compositions
Web Intelligence and Agent Systems
Examining usage protocols for service discovery
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
A systematic literature review of service choreography adaptation
Service Oriented Computing and Applications
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Organizations that own web services participating in a workflow composition may evolve their components independently. Service coordination can fail when previously legal messages between independently changing, distributed components become illegal because their respective workflow models are no longer synchronized. This paper presents an intelligent-agent framework that wraps a web service in a conversation layer and a simple workflow-adaptation function. The conversation layer implements protocols and consults globally shared, declarative policy specifications to resolve interaction failures. The framework allows agents to resolves various model mismatches that cause interaction errors, including changes to required preconditions, partners, and expected message ordering. Implications of this distributed approach to web service coordination are also discussed.