Online Recon - Expert

The core HPS java software builds live in ~hpsrun/online_recon and were installed using the [instructions on confluence]. We may decide the hps-java installation there should be a symlink to a standard one elsewhere, but note it requires an extra installation step and (currently) a non-master git branch. If the tomcat servlet needs updating, it will need to be rebuilt and redpolyed.

Everything operates as user=hpsrun, and the startup for all server-side stuff (except tomcat) is configured in $EPICS/apps/iocBoot/procServ.conf. There are 4 components, each of which can be connected to in telnet sessions:

• softioc_console dqm_et
• softioc_console dqm_evio2et
• softioc_console dqm_server
• softioc_console dqm_client

• Can the webapp be modified to automatically reload the plots periodically, without the user manually refreshing the web page? This will be important to give users feedback that things are working (and no one wants to have to reload the page). 1 Hz would be great, every few seconds would be good enough.
• The stop/start functionality in the server appears maybe unreliable, and the tomcat servlet also appears to need to be restarted if the recon server is restarted. Meanwhile, a script to do a full teardown and restart is available.