Towards modularization and composition in distributed event based systems

Abstract

A distributed and interface-based publish/subscribe system is proposed in this report. Components in the proposed system react with each other via events only, and these reactions are described in the component interfaces using a variation of Harel statecharts. By encapsulating component behaviour within the interfaces, the goal of the system is to allow the study of modularization and composition mechanisms in distributed event based applications. The presentation of the proposed system is complemented by a metamodel that describes the structural, control, and runtime aspects of distributed event systems.