[ptp-dev] PBS support in RemoteTools

[Dieter Krachtus <dieter.krachtus@xxxxxxxxxxxxxx>]

We plan to add PBS (http://en.wikipedia.org/wiki/Portable_Batch_System) support to RemoteTools. After many discussions (with i.e. Greg and Al and Jay from NCSA) we propose the following implementation:

On the server side we will go with a Java-based proxy to monitor PBS activity and communicate with the Eclipse client side. This proxy is preferably started using the already existing indexer JVM (if both indexer and proxy is used) instead of starting an additional JVM. Communication between client and proxy happens via the RM proxy protocol (http://wiki.eclipse.org/PTP/designs/rm_proxy) which has to be implemented for the Java-proxy (partially already started by Greg in org.eclipse.ptp.proxy.protocol). Future versions of this client/proxy solutions may drop the communication using a separate socket for the RM proxy protocol and use Dstore instead.

PBS lacks a change notification mechanism but
supports relatively robust XML output via the 'qstat' command. The
Java-proxy repeatedly queries for PBS output and transforms the XML
output into an object model that is used to detect changes in PBS by
comparing it to the object model of the previous PBS output. These
changes/events are then communicated to the client by the RM proxy
protocol.


Cheers,
Roland and Dieter