BibSched: many improvements

• Displays a Yes/No box to make sure you don't delete tasks by mistake.

• In the bibsched daemon, every 50 cycles, check for local tasks that have crashed.

• Store debug mode in database so that we can switch it on and off without restarting the bibsched daemons.

• Fixes a bug that would mark a task as crashed because the pid of that task would not exist anymore but because the task has completed properly.

• Press B to lood bibsched.log in your pager.

• Fixes the task options panel when a task has a very long list of arguments. (closes #1177)

• Tasks in about to stop are not going to sleep as soon as possible anymore. This proved annoying because instead of stopping they would just wait in SLEEPING and you would have to wake them up manually in order to make them stop.

• Adds a help panel in the bibsched monitor accessed via the "h" keystroke.

• Limits the progress column char length to match the database schema

• Adds the username of person doing the action in bibsched when running a task manually or editing the motd

• Adds --host which allows to force the execution of a task to a certain host (closes #991)

• Prevents non concurrent task to wake up too early, prevent higher priority tasks to run.

• flush logs after writing each message. This can be useful when using a filesystem that buffers yours writes like AFS and want to check the logs from a different server than the one the task is running on.

• Confirmation dialog before deleting periodic tasks

• Bind signal USR2 to starting foo remote console to debug running bibtasks.

• If you ask a task to stop, (status is set to "ABOUT TO STOP") and then you lower the priority of the task, say to -11, the scheduler changes the status of the task to "ABOUT TO SLEEP", ignoring the previous status.

• When --fixed-time is set and a task is postponed we used the regular sleeptime (to respect the fixed time) instead of running as soon as possible (in this case the beginning of the allowed times by --limit) e.g. A task is scheduled to run between monday and friday and sleep 24 hours and is supposed to run at 7am. Old behavior, on saturday 7am, it is postponed to run on monday morning at midnight. New behavior, it is postponed to run sunday, 7am. On sunday it is postponed to monday 7am.

• Fixes a bug sleeping a monotask that needs to run instead of ourselves.

• Adds STOPPED to displayed status in default bibsched view

• Removes the ability to force run manually tasks via the bibsched monitor and out of their time limit (specified via -L 00:40-05:00)

Signed-off-by: Alessio Deiana <alessio.deiana@cern.ch>
Reviewed-by: Samuele Kaplun <samuele.kaplun@cern.ch>