On Thu, Sep 24, 2015 at 12:22 AM, Julian Atkinson < [email protected]> wrote:
> Hi All, > > > Andrea advised that I should discuss code features/workarounds that we > developed to address issues in the mailing list. > > > https://github.com/geoserver/geoserver/pull/1189 > > > This PR provides an option to disable synchronous WPS requests via the GUI > admin panel. > I have seen the need to selectively disallow sync requests for specific processes, this one goes further and disallows synch requests completely. On a general WPS server this does not make sense, as there are many service WPSs which are fast and small (e.g., JTS based ones), but I guess you're restricting your consideration to one that serves one single process, your custom one. This change makes the WPS non compliant, as there is no way to advertise a process cannot be called in a synch way, and in particular, it makes the WPS fully non compliant (no process can be called anymore by a standard client). While I agree on the need for specific processes that are geared towards large computations and known to take a lot of time, I'm skeptical on a flag that disables asynch requests at the global level. I also recognize nobody forces the admins to check that flag, but personally I would be much more comfortable with a per process flag instead. Can other core developers share an opinion on this topic? For our plugin - a template driven netcdf encoder with cql support - we > would ideally have preferred synchronous+streaming behavior since that > would replicate our already successfully developed http service while > adding the wps protocol-support deemed necessary to satisfy an end-user > contract. > However, we determined that fixing the resource leaks involving geotools > transactions and gt store jdbc connections was too high-risk for us to > tackle. As it stands, we rely on the above code to disable asynchronous > support in production, to avoid an http client > > accidently initiating async actions that create geoserver instability. > If there are leaks you should report them. Unless it's your process that's causing the leaks to start with of course. Cheers Andrea -- == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions S.A.S. Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 http://www.geo-solutions.it http://twitter.com/geosolutions_it *AVVERTENZE AI SENSI DEL D.Lgs. 196/2003* Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003. The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy's New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc. -------------------------------------------------------
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