[Koha-bugs] [Bug 10662] Build OAI-PMH Harvesting Client

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=10662

--- Comment #35 from Andreas Hedström Mace <andreas.hedstrom.mace at sub.su.se> ---
(In reply to David Cook from comment #29)

> I'm also tempted to change the existing system so that you define OAI-PMH
> servers, and then create OAI-PMH tasks for those servers. This information
> would all be stored in the database. Then, when you wanted to run a task,
> you could click "Run" on the Web UI, and it would send the task to the
> daemon. 

To me, this sounds like the way to go! In our case, we would set the task of
repeated harvest - and not look at it again unless there are problems. =)

> I haven't 100% thought out how the Web UI and the daemon will communicate
> yet. While that above paragraph sounds good, what happens if the daemon dies
> for some reason? If it requires a message from the Web UI, it'll need a
> human to restart it. 
> 
> Actually, another idea... the Web UI could send the task, and the daemon
> could write it away to a temporary file which it cleans up after it's
> finished a task. If it crashes and gets restarted, it can check its
> temporary files to see what it was in the middle of doing. Yeah... that's
> probably a better idea.

This too sounds like good approach to me. Some sort of fail-safe to have the
harvester pick up and continue what it was doing if it has crashed - but it
should be set from the UI to begin with!

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