Online reconfiguration of component-based applications in PacoSuite

In this paper, we present an original approach for enabling online reconfiguration of component-based applications. This research fits into our component composition methodology PacoSuite, that makes use of explicit connectors between components, called composition patterns. Both components and composition patterns are docu-mented by making use of a special kind of MSC. We propose an algorithm to check whether a new component can fulfill the role of an old component in a given compo-sition pattern, without the need to revalidate the entire composition all over again. To enable online reconfiguration, we extend the documentation of a component with a new primitive that specifies when a component reaches a safe state. This approach enables to swap a component at run-time, while maintaining a consistent application.