Using Policies for Handling Complexity of Event-Driven Architectures

Abstract. Cyber-physical systems and the Internet of Things illustrate the proliferation of sensors. The full potential of ubiquitous sensors can only be realized, if sensors and traditional data sources are integrated into one system. This leads to large, complex systems which are harder to use and manage, and where maintaining desired behavior is increas-ingly difficult. We suggest a novel approach to handle the complexity of these systems: users focus on the desired behavior of the system and use a declarative policy language (DPL) to state these behaviors. An enhanced message-oriented middleware processes the policies and auto-matically generates components which execute the policies. We compared our approach against other approaches in a case study and found that it does indeed simplify the use of cyber-physical systems.