[galaxy-dev] Workflow Queue

Hi Galaxy team, I am wanting to know where to find the queue that stores all tool's that are going to be executed in the pipeline. For example, I am running a workflow of 5 tools all linked together (the details are not important). Programatically I wish to know the names of the tools that are going to be run. This is because I wish to perform some pre-run analysis on all the tools in the workflow before they get executed. Thanks, Edward Hills Department of Biochemistry, University of Otago, Dunedin, New Zealand.