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    Policy implementation is done using a script file plug-in written in Perl. The qb.conf setting for this is as follows:
    supervisor_policy_binding = Perlsupervisor_policy_library = plugin_path
    This document isn't meant to be a tutorial on the Perl scripting language so we will assume administrators modifying this module in the following documentation already have a functional knowledge of Perl's syntax. Good online resources for learning Perl can be found at {+}http://www.perl.com+ there also many good published books such as Learning Perl published by O'Reilly which can get a beginning developer started with Perl scripting.
    To create a new queuing algorithm, the developer must create a Perl module with the following Perl functions:

    1. qb_init()
    2. qb_approve_modify($oldjob, $newjob)
    3. qb_approve_submit($job)
    4. qb_calcstatus($subjobstatus, $agendastatus)
    5. qb_sudo_admin($username, $job)

    A function if not defined will automatically be overridden with the "Default Policy".
    Example scripts can be found here:


    Linux: /usr/local/pfx/qube/examples/supervisor

    Windows: C:\Program Files\pfx\qube\examples\supervisor

    OSX: /Applications/pfx/qube/examples/supervisor


    The functions defined are all used to control the queuing algorithm's properties.

     

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