No abstract

The reflective middlewares have been used as a powerful tool to cope with inherent heterogeneous nature of distributed systems, in order to give them greater adaptability capacities. Recently, some papers have extended the reflective middlewares with autonomic capabilities based on the autonomic computing paradigm. One of the main component is the MAPE-K (Monitor-Analyze-Plan-Execute plus Knowledge) component of the autonomic manager. In this paper we develop a MAPE-K component as a service of the autonomic managers of a reflective middleware based on autonomic computing. In this way, the MAPE-K is distributed to each service that is part of the composition, and internally each component of MAPE-K is constructed as a separate service, distributed and weakly coupled, giving great flexibility. We test the MAPE-K component as a service in a reflective middleware architecture based on autonomic computing, for the distributed diagnostic of faults in the services composition.

No abstract

A previous work has proposed a reflective middleware Architecture for the management of service-oriented applications. Our middleware is designed to be fully distributed through all services of the SOA Application. The architecture uses the model of Autonomic Computing which allow the adaptation of our system, in order to selfhealing. Particularly, one of the main aspects of this architecture is the representation of the knowledge. Our architecture uses different paradigms for the representation of the knowledge. For the diagnosis task, it uses chronicles, and for the reparation task it uses ontologies. In this paper, we present the knowledge representation framework, which represents the knowledge needed to perform the different operations of the middleware. Specifically, we design a distributed knowledge based on distributed chronicles, ontologies and other data structures.