[Qgis-developer] QEP: QGIS Mapserver Python Plugins

[Alessandro Pasotti]

2014-08-29 18:05 GMT+02:00 René-Luc Dhont <rldhont at gmail.com>:
>
> Le 29/08/2014 16:54, Alessandro Pasotti a écrit :
>
>> 2014-08-29 16:39 GMT+02:00 René-Luc Dhont <rldhont at gmail.com>:
>>>
>>> Hi Alessandro
>>>
>>> Thanks for this interesting input.
>>> I'm happy to test it and to develope some use case.
>>> I thought it's a good feature and can help to enhance QGIS-Server easily
>>> :
>>> WPS, WMTS, Table Join Service, WFS2 or other that OGC does not already
>>> know.
>>>
>>> Regards,
>>> René-Luc
>>>
>>>
>> Hello René-Luc,
>>
>> I'm happy to hear that you are going to test it, please let me know how it
>> goes!
>>
>> Keep in mind that it's just a proof of concept, and yes, we need a RFC
>> or QEP: the current implementation is the simplest, less obtrusive and
>> quickest that I could think about.
>>
>> For example, I would consider adding real signals attached to plugins
>> slots and cached parsed projects passed to plugin instances...
>>
>> I'm currently working on a WPS server plugin that bridges Processing
>> and PyWPS (version 3.2.2 since the latest version 4 is tightly bound
>> to werkzeug), now fighting with parameters but it basically works.
>
>
> Can I help ?
>
> I already done some works on it !
>
>>
>>
>> Regards
>
>

Hello,

I've got a first highly experimental Processing-PyWPS bridging plugin:
https://github.com/elpaso/qgis-wps

* I've only tested grass convex hull with a small shapefile
* GetCapabilties and other requests work with GET calls ony
* it needs Processing patches otherwise it hangs when reading pipes
from shell process (see [1])
* Processing needs other patches as well to support concurrent
requests (for example the grass temporary script storage should be
done in tempfile instead of the current processing folder)

I don't know Processing enough to say if there aren't any other big
showstoppers for this plugin.

Still a lot of work to do :)


 [1] https://github.com/elpaso/QGIS/commit/afbfb7f12b8f62731d40745035d919532ae5da1f

-- 
Alessandro Pasotti
w3:   www.itopen.it