Research On A SCA Service Model For Dynamic Management

In order to meet the practical demands of enterprise's business frequent change, increase development efficiency, reduce development and maintenance costs, the paper will introduce a service-oriented architecture to a network evaluation system development. The use of service-oriented architecture can greatly improve system reusability and loosen coupling parts to maintain the system.This paper proposes a new service based on SCA, OSGi component model-DOSGi SCA model. OSGi and SCA model are two main programming models which are service-oriented architecture SOA. SCA and OSGi have service-oriented features, but have different emphasis.The paper mainly discusses how to combine SCA with OSGi together to provide more feasible SOA solutions. The model brings in service registry mechanism by extending the description of service in the model. It proposes the service's dynamic load/unload strategy, in order to ensure the system can automatically search for the service required by system software according to the introducing relationship, and to deployment, load or unload related services.The paper in the end designes and implements application system based on DOSGi_SCA model according to the practical business demands of the network assessment. The operation of the practical system shows that the model can realize the dynamic management of all kinds of servieces in the network and improve the extendibility of network assessment system.