[Pywps-dev] Import qgis.core into PyWPS process

[Jáchym Čepický]

Hi,

first check, if your GetCapabilities response is ok 
(http://server/wps?service=wps&request=getcapabilities) - maybe the 
plugin is corrupted (it's not the stablest piece of software).

Then please one more time: check the error.log of your web server, there 
should be written more - you can pass any exception or error message 
either to the mailing list or share it via pastebin.net or similar service

J

Dne 2.1.2017 v 21:38 Eduardo Silverio da Silva napsal(a):
> In my case I am using QGIS 2.18 (x32) and Python 2.7.13 (x32) on Windows
> 10, and I have already added the following environment variables:
>
> PYTHONPATH:
> C:\Program Files (x86)\QGIS 2.18\apps\qgis\python
> C:\Program Files (x86)\QGIS 2.18\apps\qgis\python\plugins
> C:\Program Files (x86)\QGIS 2.18\apps\Python27\Lib\site-packages
>
> PATH:
> C:\Program Files (x86)\QGIS 2.18\bin
> C:\Program Files (x86)\QGIS 2.18\apps\qgis\bin
> C:\Python27
> C:\Python27\Scripts
>
> Here is the code where I want to import the classes:
>
> #I would like to use these classes:
> # from qgis.core import *
> # from qgis.gui import *
> # from processing.core.Processing import Processing
> # import processing
>
> from pywps.Process import WPSProcess
> from types import FloatType
>
> class Process(WPSProcess):
>      def __init__(self):
>          WPSProcess.__init__(self,
>               identifier       = "processar",
>               title            = "Title",
>               version          = "1",
>               storeSupported   = "false",
>               statusSupported  = "false",
>               abstract         = "Abstract")
>
>          self.value1 = self.addLiteralInput(identifier = "value1", title =
> "Input 1", type = FloatType)
>          self.value2 = self.addLiteralInput(identifier = "value2", title =
> "Input 2", type = FloatType)
>          self.result = self.addLiteralOutput(identifier = "result", title =
> "Result", type = FloatType)
>
>      def execute(self):
>     # Here I would like to write the necessary code to execute the
> qgis:extractnodes algorithm:
>     # processing.runalg('qgis:extractnodes', 'river.shp', 'output.shp')
>
> v1 = self.value1.getValue()
>          v2 = self.value2.getValue()
>          self.result.setValue(v1 + v2)
>          return
> --------------------------------------
>
> But even with those PATH variables configured I could not access the
> algorithm via WPS-client plugin.
>
> Regards,
>
>
> 2017-01-02 17:31 GMT-02:00 Salvatore Larosa <lrssvtml at gmail.com>:
>
>> Hi,
>>
>> On Mon, Jan 2, 2017 at 4:31 PM, Eduardo Silverio da Silva <
>> eduardosilverio1990 at gmail.com> wrote:
>>
>>> Hello people,
>>>
>>> I have a python script that uses some classes from qgis and it runs
>>> correctly in my standalone app (IDLE Python). But when I try to publish the
>>> script through PyWPS (3.2.5), the process does not apear in the list of
>>> GetCapabilities. I think the problem is with the following imports:
>>>
>>> from qgis.core import *
>>> from qgis.gui import *
>>> from processing.core.Processing import Processing
>>>
>>> When I comment these lines the algorithm is showed.
>>>
>>
>> I guess the problem is with your environment variable, you should add the
>> QGIS python and plugins paths to PYTHONPATH and probably the QGIS lib path
>> to LD_LIBRARY.
>>
>> Also, any error message could be useful in order to get some help from the
>> community. :)
>>
>> Regards,
>> -SL
>>
>>
>> --
>> Salvatore Larosa
>> linkedIn: http://linkedin.com/in/larosasalvatore
>> twitter: @lrssvt
>> skype: s.larosa
>> IRC: lrssvt on freenode
>>
>
>
>
>
>
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>

-- 
Jachym Cepicky
e-mail: jachym.cepicky at gmail.com
twitter: @jachymc