Reconfigurable Run-Time Support for Distributed Service Component Architectures

International audienceSCA (Service Component Architecture) is an OASIS standard for describing service-oriented middleware architectures. In particular, SCA promotes a disciplined way for designing distributed architectures based on a component model and an Architecture Description Language (ADL). However, SCA does not cover the deployment and the run-time management of SCA applications. In this paper, we therefore describe the FraSCAti platform, which provides run-time support, deployment capabilities, and run-time management for SCA. Compared to state-of-the-art platforms, FraSCAti brings a dynamic reflective support to SCA and enables both introspecting and reconfiguring service-oriented architectures at run-time. To achieve this capability, the components are completed by a dedicated container, which is automatically generated by the platform. Furthermore, FraSCAti is a highly configurable platform that can be easily customized by finely selecting the features and functionalities which need to be included. In this way, the platform can be adapted to different application needs and middleware environments

Supporting Pervasive and Social Communications with FRASCATI

Abstract: In pervasive environments, the runtime adaptation of applications is done considering available event sources and services. To do that, the events have to be collected and processed, and the volatile services identified and accessed. However, although the event flow and service mobility are key issues in the adaptation process, existing solutions fail to deal with them in a simple and flexible way. Therefore, in this paper we propose to face these issues by combining the SCA (Service Component Architecture) standard, micro-blogging services and discovery technologies. In particular, we benefit from the SCA extensibility, supported by the binding concept, for introducing two new communication mechanisms: i) social bindings, allowing asynchronous event exchange via Twitter and, ii) pervasive bindings that provide support for discovery using standard protocols such as UPnP. We add support for these bindings in FRASCATI (a platform for SCA) and illustrate their usage with a smart home scenario that requires the integration of heterogeneous technologies