A Meta-Model Based Proposal for QOS of WSCDL Choreography
Ravi Shankar Pandey, B.D. Chaudhary · 2010
Quality of service (QOS) of a choreography is dependent on the quality of service of participating roles. Re- cently, a proposal has been made to extend the meta model of WSDL to include QOS parameters. These parameters include reliability, availability and demand. In this paper we propose a multidimensional model of qual- ity of service of a choreography based on above proposed ex- tensions. Our proposal describes the QOS of a choreogra- phy in terms of QOS of dominant role, dominant relationship and dominant interaction. Dominant role and dominant re- lationship are identified by analyzing relationships and inter- actions where as dominant interaction is based on dominant operation. A dominant operation has maximum arrival rate of request.QOS attributes of dominant role are same as that of roles. Further, we also proposed rules for estimation of QOS of dominant relationship and dominant interaction. We demon- strate our proposal through an example.