Platform Specific Extensions in the SOA-Pro Profile for the Description of Peer-to-Peer and Grid Services

Developments in service-oriented computing have led to the emergence of heterogeneous service technologies moving well beyond Web services, such as Peer-to-Peer (P2P) and Grid services. Although all these technologies instantiate the de-facto service-oriented model, they introduce a number of technology-specific characteristics which hinder their integration and interoperability. A first step in overcoming this obstacle is to address the aforementioned heterogeneity at the design level. In this paper, we present our work towards enriching the upcoming SOA-Pro profile, which supports the design of service-oriented systems in a platform-agnostic manner, with the concepts necessary to model P2P and Grid services. We propose a set of extensions, which capture the specific features of P2P and Grid services, as they are seen in two prominent representative platforms, namely the JXTA technology for P2P services, and the WSRF framework for Grid services. The applicability and merits of our contribution are demonstrated through a case study based on the Purchase Order example.