Towards Service Orchestration in XML Filtering Overlays.

Various types of applications and services generate vast amounts of XML data feeds that may be streamed in near real time to different subscribing endpoints in order to take actions in a timely manner. In an earlier work we proposed an XML overlay network comprised of brokers that can be configured for efficient XML message filtering and replication with concurrent subscribers. The selective filtering reduces the bandwidth consumption of the network and also provides applications with data on a need-to-know basis. In our current work we propose the improvement upon original architecture through addition of service orchestration features to individual broker nodes. The filtering overlay network can be orchestrated to update service properties on individual filtering nodes. We provide a preliminary implementation to demonstrate the feasibility of our approach.