A Scalable Self-Managing Architecture for WSRF Services

Service-Oriented Architectures provide integration of and interoptablity for independent and loosely coupled services. Web services and the WSRF standards are frequently used to realise such Service-Oriented Architectures. In such systems, autonomic principles of self-configuration, self-optimisation, self-healing and self-adapting are desirable to ease management and improve robustness. In this paper we focus on the extension of the self management and autonomic behaviour of a WSRF container to include its interconnection and interaction with other WSRF containers. In our architecture we incorporate a structured distributed hash table peer-to-peer overlay network within our autonomic WSRF service container. This approach enables the runtime construction of a scalable selfmanaging and self-configuring SOA system. Our architecture is inherently non-hierarchical and widely distributed. It enables reliable resolution of web service locations at any application server, allows balanced runtime deployment of WSRF services, migration to enable service level agreements to be satisfied and provides autonomic management of the overall system.