Research And Implementation Of The CORBA Resource Encapsulation Based On WSRF

With the rapid development of computer networks, Internet-based computing environment has become increasingly more common. Meanwhile, a growing number of computing resources, storage resources and network resources may be relying on the Internet to be visited and accessed publicly as public resources. Also strong demand in various fields promotes the development of distributed computing technology. Grid tries to achieve full connectivity of all resources on the Internet, WSRF, the latest technical specifications of grid, try to realize the integration of Web Services and grid. The central concern of WSRF is to model statefu resources in order to achieve the status of all resources on the Internet interoperability and synergies working.As one of the matured technologies, CORBA has been widely used to tackle the problems of distributed computing and integration solutions in various domains.To our knowledge it is still an open problem concerning to publishing the existing CORBA services as a WS-Resource in the grid domain in order to reuse and extend the functionality of CORBA object .Based on CORBA and Web Service Resource Framework, an analysis of CORBA and WSRF specification is presented first followed by a research work on the interoperability of CORBA and WS-Resource in grid environment .Details of the concepts, principles and the key technologies are proposed. These main contributions of this thesis can be summarized as follows:1. Analysis the key issues to resolve the interoperability of CORBA and WS-Resource. Based on WSRF, We design the CORBA Service Resource Framework. We also design the steps to achieve the framework of the model.2. From the general idea of interoperability among different Middleware, we propose a virtual WS-Resource Gateway model. In view of the Gateway design, we compare and make choice among interoperability in identifying ways, the layer of interface definition and the protocol layer.3. Based on CORBA attributes, we proposed a resource-indicated method. We designed the encapsulation of ResourceProperty and Resource and detailed the function and features of each module, including use the factory method design pattern to create resource based on CORBA, the implementation and management of resource are separated.4. Based on CORBA StarBus4.0J and grid Globus Toolkit 4 platforms, we implemented the encapsulation of ResourceProperty and Resource. The establishment and management of resources and by ResourceFactory Resource is created by ResourceFactory and managed by ResourceHome.We revised and expanded the function of ResourceHome in order to manage Resource based on CORBA5. Did corresponding functional and performance tests and indicated that the encapsulation of Resource base on CORBA can well model stateful Resource.