Triana as a Graphical Web Services Composition Toolkit

In this paper, we extend the functionality of the Triana problem-solving environment into the Web services world. Triana uses a peer to peer subset of the GridLab GAT interface, that we have labeled the GAP Interface. The GAT/GAP are middleware independent APIs that allows transparent access to various underlying middleware architectures. Current GAP bindings include JXTA and P2PS, an in house lightweight P2P toolkit. Here, we newly extend this functionality to create a Web services binding for the GAP, which allows users to graphically and transparently create Web services workflows. In particular, we look at the discovery, invocation, composition, and publishing of Web services using the Triana environment. Such composed applications may then be written as BPEL4WS graphs by using the Triana pluggable architecture and executed from within Triana or any Web services choreography engine.