A Web-based Interface for ARM Data Stream Dependency Tool

1. A Web-based Interface for ARM Data Stream Dependency Tool Chaomei Lo, Sutanay Choudhury, Brian Ermold, Todd Halter, Matt Macduff Objective This web-based interface tool is used to retrieve the information on ARM data streams and present it in a tree diagram. Current Status • User can specify a data stream based on a site and a facility name and • retrieve the following information: • Track all datastreams that are used to create this datastream. • Track all datastreams that use this datastream as input. • Track what type of process created this datastream (VAP, INGEST, • Collection, etc.) • Track which process (process name) created this datastream. Implementation • CLIENT SIDE DESIGN • Adobe flex 2, a rich internet application (RIA) framework is used to create an expressive, high performance web browser based interface. • SERVER SIDE DESIGN • Java Servlet technology with Apache Tomcat Servlet container. • DATA SOURCE • Retrieved from ARCF DSDB database, the combination of XML and JSON technologies are used to serialize the data across the network. • GRAPH LAYOUT • Implemented Sugiyama’s graph layout algorithm in Java. Proposed Future Extensions • Be integrated with DOD, BODS, DSView and other ARM information systems. • Track if an input datastream is required or recommended. • Track if a datastream is active/inactive, exists, and the reason. • Track which fields in a datastream were used to create the next datastream. • Track which datastreams provide a particular field. • Track priority of multiple input datastreams used for the same type of information. • Track which VAPs not to run when a datastream is down.