[Pywps-dev] Raster Output error

Jachym Cepicky jachym.cepicky at gmail.com
Mon Jun 27 13:39:24 PDT 2016 

Lorenzo,

two things,

in your code:

IOError: [Errno 2] No such file or directory:
'/tmp/pywps/pypws_process_lQqN_6/done'
ERROR:root:Service error: near "''": syntax error

means - you can not save output.file as 'done' - it must be file name

second: there was bug in pywps, which lead to error while constructing the
final response from pywps, please test pygrass branch in my repository

https://github.com/jachym/pywps/tree/pygrass

one more time:

        response.outputs['raster_out'].output_format = Format('GEOTIFF')
        response.outputs['raster_out'].file = 'output.tiff'

should work ASSUMING, output.tiff is existing file!


pá 24. 6. 2016 v 13:17 odesílatel Lorenzo Bottaccioli <
lorenzo.bottaccioli at gmail.com> napsal:

> Hi all,
>
> Can you please show a simple PyWPS process that revice a geotiff and
> returns it back and the url for requesting it?.
> I'm not finding a way to do that.
>
> Thanks in advantage,
> Best
>
>
> Lorenzo
>
> 2016-06-21 17:40 GMT+02:00 Jachym Cepicky <jachym.cepicky at gmail.com>:
>
>> hi,
>>
>> if you are running pywps in apache2, it's usually
>> /var/log/apache2/error.log
>> if flask - it should be written to the command line
>>
>> look for some pythonish error
>>
>> po 20. 6. 2016 v 17:29 odesílatel Lorenzo Bottaccioli <
>> lorenzo.bottaccioli at gmail.com> napsal:
>>
>>> Hi Jachym,
>>>
>>> As I wrote in the previous mail I have changed
>>>
>>> response.outputs['response'].file* = 'done' *in
>>> response.outputs['response'].data = 'done'  .
>>>
>>> But I stil get an error:
>>> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
>>> <title>500 Internal Server Error</title>
>>> <h1>Internal Server Error</h1>
>>> <p>The server encountered an internal error and was unable to complete
>>> your request.  Either the server is overloaded or there is an error in the
>>> application.</p>
>>>
>>>
>>> Which is the HTTPD error.log file? The pywps.log file is always empty
>>> and the log level is set to DEBUG
>>> Best,
>>>
>>> Lorenzo
>>>
>>> 2016-06-18 23:39 GMT+02:00 Jachym Cepicky <jachym.cepicky at gmail.com>:
>>>
>>>> hi,
>>>>
>>>> as jonas was saying: response.outputs['response'].data = 'done' should
>>>> work better
>>>>
>>>> Lorenzo:  do you get anything in the HTTPD server error.log file?
>>>>
>>>> pá 10. 6. 2016 v 15:30 odesílatel Lorenzo Bottaccioli <
>>>> lorenzo.bottaccioli at gmail.com> napsal:
>>>>
>>>>> Hi,
>>>>>
>>>>> I'have changed from file to data in response.outputs['response'].data
>>>>> = 'done', but bow I still get an error in the response.
>>>>>
>>>>> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
>>>>> <title>500 Internal Server Error</title>
>>>>> <h1>Internal Server Error</h1>
>>>>> <p>The server encountered an internal error and was unable to complete
>>>>> your request.  Either the server is overloaded or there is an error in the
>>>>> application.</p>
>>>>>
>>>>>
>>>>> The GET request is written like this:
>>>>>
>>>>>
>>>>> http://130.192.5.114:8080/wps?service=wps&version=1.0.0&request=execute&Identifier=rast_try&datainputs=raster=@xlink:href=file:///home/lorenzo/aspect_1ifGBx0
>>>>>
>>>>> In the terminal I dont get any error report.
>>>>>
>>>>> Tnx,
>>>>>
>>>>> Lorenzo
>>>>>
>>>>> 2016-06-10 10:20 GMT+02:00 Jonas Eberle <jonas.eberle at gmx.de>:
>>>>>
>>>>>> The error "no such file or directory" comes from the following line:
>>>>>> response.outputs['response'].file = 'done'
>>>>>>
>>>>>> As response is a LiteralOutput I guess it is not correct to use
>>>>>> the file attribute, better use the data attribute:
>>>>>> response.outputs['response'].data = 'done'
>>>>>>
>>>>>> Cheers,
>>>>>> Jonas
>>>>>>
>>>>>> ----- Am 10. Jun 2016 um 10:13 schrieb Jachym Cepicky <
>>>>>> jachym.cepicky at gmail.com>:
>>>>>>
>>>>>> Hi Lorenzo,
>>>>>> There are two bugs as I understand. The first one:
>>>>>>
>>>>>> IOError: [Errno 2] No such file or directory:
>>>>>> '/tmp/pywps/pypws_process_lQqN_6/done'
>>>>>>
>>>>>> do you have /tmp/pywps/ directory in you system (and is it writeable?)
>>>>>>
>>>>>> The second bug is about attempt to write log to database
>>>>>>
>>>>>> nice report btw, with the process I believe, we can fix it (both)
>>>>>> once we find out what the problem could be
>>>>>>
>>>>>> Jachym
>>>>>>
>>>>>>
>>>>>> st 8. 6. 2016 v 11:50 odesílatel Lorenzo Bottaccioli <
>>>>>> lorenzo.bottaccioli at gmail.com> napsal:
>>>>>>
>>>>>>> Hi List,
>>>>>>>
>>>>>>> I'm trying to run a process that recives a GeoTIFF as input and
>>>>>>> response a GeoTIFF as output. But I'm having an error. The process is this:
>>>>>>> from pywps import Process, ComplexInput, ComplexOutput,
>>>>>>> get_format,LiteralOutput, Format
>>>>>>>
>>>>>>>
>>>>>>> class Raster(Process):
>>>>>>>
>>>>>>>     def __init__(self):
>>>>>>>         inputs = [ComplexInput('raster','Raster
>>>>>>> input',[Format('GEOTIFF')])]
>>>>>>>
>>>>>>>         outputs = [ComplexOutput('raster_out', 'Raster
>>>>>>> output',[Format('GEOJSON')]),LiteralOutput('response', 'Output response',
>>>>>>> data_type='string')]
>>>>>>>         super(Raster, self).__init__(
>>>>>>>             self._handler,
>>>>>>>             identifier='rast_try',
>>>>>>>             title='Raster try',
>>>>>>>             inputs=inputs,
>>>>>>>             outputs=outputs,
>>>>>>>             store_supported=True,
>>>>>>>             status_supported=True
>>>>>>>         )
>>>>>>>
>>>>>>>     def _handler(self, request, response):
>>>>>>>
>>>>>>>         from osgeo import gdal
>>>>>>>         app=request.inputs['raster'][0].file
>>>>>>>         inds = gdal.Open(app)
>>>>>>>         outdriver = gdal.GetDriverByName('GTiff')
>>>>>>>         outds = outdriver.CreateCopy('output.tiff', inds)
>>>>>>>         outds.FlushCache()
>>>>>>>         response.outputs['raster_out'].output_format =
>>>>>>> Format('GEOTIFF')
>>>>>>>         response.outputs['raster_out'].file = 'output.tiff'
>>>>>>>         response.outputs['response'].file = 'done'
>>>>>>>         return response
>>>>>>>
>>>>>>> The error that I recive is this one:
>>>>>>>
>>>>>>> Traceback (most recent call last):
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/Process.py",
>>>>>>> line 156, in _run_process
>>>>>>>     wps_response.update_status('PyWPS Process finished', 100)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/WPSResponse.py",
>>>>>>> line 41, in update_status
>>>>>>>     self.doc = self._construct_doc()
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/WPSResponse.py",
>>>>>>> line 171, in _construct_doc
>>>>>>>     output_elements = [self.outputs[o].execute_xml() for o in
>>>>>>> self.outputs]
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/inout/outputs.py",
>>>>>>> line 276, in execute_xml
>>>>>>>     literal_data_doc = WPS.LiteralData(text_type(self.data))
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/inout/basic.py",
>>>>>>> line 231, in get_data
>>>>>>>     return IOHandler.get_data(self)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/inout/basic.py",
>>>>>>> line 173, in get_data
>>>>>>>     file_handler = open(self.source, mode='r')
>>>>>>> IOError: [Errno 2] No such file or directory:
>>>>>>> '/tmp/pywps/pypws_process_lQqN_6/done'
>>>>>>> ERROR:root:Service error: near "''": syntax error
>>>>>>> Traceback (most recent call last):
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/Service.py",
>>>>>>> line 358, in _parse_and_execute
>>>>>>>     wps_response = process.execute(wps_request, uuid)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/Process.py",
>>>>>>> line 145, in execute
>>>>>>>     wps_response = self._run_process(wps_request, wps_response)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/Process.py",
>>>>>>> line 178, in _run_process
>>>>>>>     wps_response.update_status('Process error: %s.%s Line %i %s' %
>>>>>>> (fname, method_name, exc_tb.tb_lineno, e), -1)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/app/WPSResponse.py",
>>>>>>> line 47, in update_status
>>>>>>>     update_response(self.uuid, self)
>>>>>>>   File
>>>>>>> "/usr/local/lib/python2.7/dist-packages/pywps-4.0-py2.7.egg/pywps/dblog.py",
>>>>>>> line 67, in update_response
>>>>>>>     cur.execute(update)
>>>>>>> OperationalError: near "''": syntax error
>>>>>>>
>>>>>>>
>>>>>>> How can I fix this?
>>>>>>>
>>>>>>> Best,
>>>>>>>
>>>>>>> Lorenzo
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> pywps-dev mailing list
>>>>>>> pywps-dev at lists.osgeo.org
>>>>>>> http://lists.osgeo.org/mailman/listinfo/pywps-dev
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> pywps-dev mailing list
>>>>>> pywps-dev at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/pywps-dev
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>
>
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