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ISSN: 1939-1374
Hector Fernandez , Vrije University Amsterdam, The Netherland
Cedric Tedeschi , University of Rennes 1, France
Thierry Priol , INRIA, France
With the recent widespread adoption of service-oriented architecture, the dynamic composition of services is now a crucial issue in the area of distributed computing. The coordination and execution of composite Web services are today typically conducted by heavyweight centralized workflow engines, leading to an increasing probability of processing and communication bottleneck and failures. In a world where platforms are more and more dynamic and elastic as promised by cloud computing, decentralized and dynamic interaction schemes are required. Addressing the characteristics of such platforms, nature-inspired analogies recently regained attention to provide autonomous service coordination on top of dynamic large scale platforms. In this paper, we propose a approach for the decentralized execution ofcomposite Web services based on an unconventional programming paradigm that relies on the chemical metaphor. It provides a high-level execution model that allows executing composite services in a decentralized manner. Composed of services communicating through a persistent shared space containing control and data flows between services, our architecture allows to distribute the composition coordination among nodes. A proof of concept is given, through the deployment of a software prototype implementing these concepts, showing the viability of an autonomic vision of service composition.
Decentralization, Information Technology and Systems, Database Management, Systems, Workflow management, Information Interfaces and Representation (HCI), User Interfaces, Rule-based processing, Service coordination, Workflow execution, Nature-inspired computing, Rule-based programming

T. Priol, C. Tedeschi and H. Fernandez, "A Chemistry-Inspired Workflow Management System for a Decentralized Workflow Execution," in IEEE Transactions on Services Computing.
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