Hi Zeno, Thanks for your message.
Originally, I developed the OAI-PMH harvester using a cronjob, but that wasn't acceptable for Stockholm University Library for a few reasons. One, there was no web interface for controlling it. Two, they wanted to execute OAI-PMH requests every 2-3 seconds and cron has 1 minute as its finest granularity. Three, even if you setup a cronjob to run every minute, long running tasks could get duplicated (although you could mitigate that with locks which would be a pain). Plus, you want to run tasks in parallel, so you're going to want to use multiple processes, which cron isn't really set up to achieve. At the end of it, I think it's more 'to purpose' to have your own daemon where you can control time intervals, workers, have a web interface, etc. Cron is useful for many purposes, but I don't think it's always the right solution. Plus, creating a web interface for cron isn't necessarily the best idea I think. I would consider it to be a hack rather than a solution. As others have pointed out before me, it comes with significant security issues. With a task scheduler, you're much more in control of everything. David Cook Systems Librarian Prosentient Systems 72/330 Wattle St Ultimo, NSW 2007 Australia Office: 02 9212 0899 Direct: 02 8005 0595 > -----Original Message----- > From: Tajoli Zeno [mailto:z.taj...@cineca.it] > Sent: Wednesday, 22 February 2017 12:28 AM > To: David Cook <dc...@prosentient.com.au>; koha-de...@lists.koha- > community.org > Subject: Re: [Koha-devel] Task schedulers and message queues for Koha > > Hi David, > > Il 20/02/2017 02:01, David Cook ha scritto: > > In 2016, I worked on a Koha task scheduler for downloading and > > importing records via OAI-PMH. I have code which works, but it's > > lacking test coverage and I'm unsure that it will make it through QA and be > accepted. > > for me is not 100% clear why do you use a Task scheduler. > Why do you no manage queues only with cron ? > At least we need a web interface to setup cron. > > Bye > Zeno Tajoli > > > -- > Zeno Tajoli > /SVILUPPO PRODOTTI CINECA/ - Automazione Biblioteche > Email: z.taj...@cineca.it Fax: 051/6132198 > *CINECA* Consorzio Interuniversitario - Sede operativa di Segrate (MI) _______________________________________________ Koha-devel mailing list Koha-devel@lists.koha-community.org http://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-devel website : http://www.koha-community.org/ git : http://git.koha-community.org/ bugs : http://bugs.koha-community.org/
