Stian, what happends with the provenance when I use Taverna's failover handler? which is the behaviour? It keeps track of the error and also the execution of the alternative service or only keeps track of the logical service? Are there any docs that I can look after?
thanks! ----- Original Message ----- From: "Guzman Llambias - INCO" <[email protected]> To: <[email protected]> Sent: Friday, January 28, 2011 3:40 PM Subject: Re: [Taverna-hackers] How to use Taverna's Failover Handler > Hi Stian, > > thank you very much for the quick answer! The info was very usefull!! > Do you have any idea of when you plan to add this feature to Taverna 2 > Workbench? > > Regards > Guzmán > > > Stian Soiland-Reyes <[email protected]> escribió: > >> On Fri, Jan 28, 2011 at 13:36, Guzmán Llambías - INCO >> <[email protected]> wrote: >>> I'm very interested in using the Failover Handler of the Taverna >>> dispatch >>> stack described in Taverna, reloaded paper, but I couldn't found any >>> further >>> docs or see how to configure it in the workbench. Could you please point >>> me >>> a link to some docs I could use? >> >> >> The Taverna 2 workflow engine supports this, but we've unfortunately >> not yet added a way to add the alternative services in the Taverna 2 >> user interface. >> >> >> Taverna 1 supports this, if you build such a workflow in Taverna 1 and >> open it in Taverna 2, Taverna should keep both services and make use >> of the Failover mechanism. In Taverna 1 you need to add 'alternative >> processors' [2] and then do the port mapping. >> >> >> Note that in some cases your alternative might not match exactly on >> inputs or outputs, the best case then is to use the Abstract Processor >> and add both real services as alternatives - you can create enough >> ports in the Abstract processor to cover all ports. In the case of a >> service missing an output port you should wrap the alternates in >> nested workflows to provide default values on the missing ports. >> >> In the case that the alternative needs a more complicated call pattern >> (like a create-run-get-result) you can add the nested workflow as an >> alternate - but note that in Taverna 2 errors in a nested workflow >> will not trigger the Failover. >> >> (In the architecture paper you might see that this is because the >> errors would be returned as normal results from the parent Invoke >> layer) >> >> >> [1] >> http://www.mygrid.org.uk/usermanual1.7/workbench_windows.html#ame_alternate_processors >> >> -- >> Stian Soiland-Reyes, myGrid team >> School of Computer Science >> The University of Manchester >> >> ------------------------------------------------------------------------------ >> Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! >> Finally, a world-class log management solution at an even better >> price-free! >> Download using promo code Free_Logger_4_Dev2Dev. Offer expires >> February 28th, so secure your free ArcSight Logger TODAY! >> http://p.sf.net/sfu/arcsight-sfd2d >> _______________________________________________ >> taverna-hackers mailing list >> [email protected] >> Web site: http://www.taverna.org.uk >> Mailing lists: http://www.taverna.org.uk/about/contact-us/ >> Developers Guide: http://www.taverna.org.uk/developers/ >> > > > > ---------------------------------------- > Enviado usando el Servicio de Correo Web > Facultad de Ingenieria - UR - URUGUAY > > ------------------------------------------------------------------------------ > Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! > Finally, a world-class log management solution at an even better > price-free! > Download using promo code Free_Logger_4_Dev2Dev. Offer expires > February 28th, so secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsight-sfd2d > _______________________________________________ > taverna-hackers mailing list > [email protected] > Web site: http://www.taverna.org.uk > Mailing lists: http://www.taverna.org.uk/about/contact-us/ > Developers Guide: http://www.taverna.org.uk/developers/ ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ taverna-hackers mailing list [email protected] Web site: http://www.taverna.org.uk Mailing lists: http://www.taverna.org.uk/about/contact-us/ Developers Guide: http://www.taverna.org.uk/developers/
