Validating reconfigurations of reo circuits in an e-Banking scenario

We formalize dynamic reconfiguration of Reo circuits (which can be thought of as multi-party communication infrastructures built from primitive channels) through graph transformation, and apply it to a scenario from the Finance domain: a critical infrastructure controlling the business process of an e-banking system. In this scenario, reconfiguration is triggered as soon as the communication buffers reach specific predefined thresholds of congestion. These constraints are implemented inside the Reo model by associating suitable predicates to channels, thus extending previous results on the use of graph transformation for the reconfiguration of Reo's graphical structures.