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NOW: A Workflow Language for Orchestration in Nomadic Networks

Abstract : Existing workflow languages for nomadic or mobile ad hoc networks do not offer adequate support for dealing with the volatile connections inherent to these environments. Services residing on mobile devices are exposed to (temporary) network failures, which should be considered the rule rather than the exception. This paper proposes a nomadic workflow language built on top of an ambient-oriented programming language which supports dynamic service discovery and communication primitives resilient to network failures. Our proposed language provides high level workflow abstractions for control flow and supports rich network and service failure detection and handling through compensating actions. Moreover, we introduce a powerful variable binding mechanism which enables dynamic data flow between services in a nomadic environment. By adding this extra layer of abstraction on top of an ambient-oriented programming language, the application programmer is offered a flexible way to develop applications for nomadic networks.
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Eline Philips, Ragnhild Straeten, Viviane Jonckers. NOW: A Workflow Language for Orchestration in Nomadic Networks. 12th International Conference on Coordination Models and Languages (COORDINATION) Held as part of International Federated Conference on Distributed Computing Techniques (DisCoTec), Jun 2010, Amsterdam, Netherlands. pp.31-45, ⟨10.1007/978-3-642-13414-2_3⟩. ⟨hal-01054625⟩

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