[owslib-devel] wps branch available

Wed Nov 16 10:09:06 PST 2011

Hi Dom and Jorge,
thanks for the suggestions, I indeed made the wps module more tolerant of obsolete namespaces, and now it will use any WPS namespace it finds in the response documents.

Dom, I was able to execute the GetCapabilities and DescribeProcess invocations towards the WPS service at CEDA (see file examples/wps-ceda-script.py), but it seems to me that any Execute request to the DoubleIt process requires the user to log in with openid, am I wrong ? If I am wrong, can you please send me an example invocation that requires no security ?

thanks a lot,
Luca

On Nov 10, 2011, at 4:27 AM, Dominic Lowe wrote:

Yes, it's our server that show's the wrong namespace - it was initially developed quite a while ago now and it is probably not fully compliant in other ways (I can't recall offhand if WPS was even finalised when we developed it).

I like Jorge's idea of looking for any WPS namespace.

Regards,
Dom

On 10 November 2011 10:11, <jmdj at pml.ac.uk<mailto:jmdj at pml.ac.uk>> wrote:
 Hi to all

The namespace "http://www.openspatial.net/wps" is an old namespace and
has been dropped (if you look at the WPS1.0.0 document you have it in
the SOAP example in page 69).

In the OGC world the schema structure takes precedence over
documentation, meaning if it is in the schema then is an "absolute
truth", and the WPS using that namespace should be updated.

Luca, maybe you should use an "open mind" approach, using what ever
namespace is assigned to wps. See the example below on how to get the
namespace:

import urllib, stringIO
from lxml import etree
xmlIO=urllib.read("http://schemas.opengis.net/wps/1.0.0/examples/53_wpsExecute_request_ComplexValue.xml")
wpsXML=etree.parse(xmlIO)
wpsXML.getroot().nsmap["wps"]
>>'http://www.opengis.net/wps/1.0.0'

Jorge

On 09/11/11 20:56, Cinquini, Luca (3880) wrote:
> Hi Dom,
>
>       thanks for the additional example... I noticed that your service uses the namespace "http://www.opengeospatial.net/wps", while the other two WPS services I have tested against use "http://www.opengis.net/wps/1.0.0".
> >From the OGC web site it looks like the second namespace should be the correct one (see for example: http://schemas.opengis.net/wps/1.0.0/wpsGetCapabilities_request.xsd),
> but maybe I am wrong and we need to support both ? Would you know what is the correct way to go ?
>
> thanks, Luca
>
> On Nov 9, 2011, at 6:56 AM, Dominic Lowe wrote:
>
>> Luca,
>>
>> Many thanks for your contributions.
>>
>> We also have a WPS server (implemented in Python) that you could test
>> against:
>> http://ceda-wps2.badc.rl.ac.uk/wps?Service=WPS&Request=GetCapabilities&Format=text/xml
>>
>> The following "DoubleIt" process can be called without security
>> (DescribeProcess):
>>
>> http://ceda-wps2.badc.rl.ac.uk/wps?Service=WPS&Request=DescribeProcess&Version=1.0.0&Identifier=DoubleIt
>>
>> Regards,
>>
>> Dom
>>
>> On 08/11/11 23:10, Luca.Cinquini at jpl.nasa.gov<mailto:Luca.Cinquini at jpl.nasa.gov> wrote:
>>> Hi Jorge,
>>>     these are great examples... if you give me one day (at most two) I will expand the code to support them, and provide some tests and examples... I'll let you know when you can start giving it a try...
>>> thanks, Luca
>>>
>>> On Nov 8, 2011, at 3:18 AM, Jorge de Jesus wrote:
>>>
>>>> Ciao Luca
>>>>
>>>> Excellent job, we should all buy you some beer :)
>>>>
>>>> It's really nice that you are using the USGS WPS since it is  a 52North
>>>> WPS instance, the owslib should be tested against the major WPS
>>>> implementations (Zoo, degree etc), maybe you could make an introduction
>>>> of owslib in other mailing list and get their support.
>>>>
>>>> Anyway if you need you can use the PML WPS instances (vector and raster
>>>> instances are mainly WPS-Grass-Bridge processes)
>>>> Support page:
>>>> http://rsg.pml.ac.uk/wps/index.html
>>>> Test data page:
>>>> http://rsg.pml.ac.uk/wps/testdata/index.html
>>>>
>>>> Examples:
>>>> http://rsg.pml.ac.uk/wps/generic.cgi?request=Execute&service=wps&version=1.0.0&identifier=reprojectImage&datainputs=[inputImage=http://rsg.pml.ac.uk/wps/testdata/elev_srtm_30m.img;outputSRS=EPSG:4326]&responsedocument=outputImage=@asreference=true
>>>>
>>>> http://rsg.pml.ac.uk/wps/generic.cgi?request=Execute&service=WPS&version=1.0.0&identifier=reprojectCoords&datainputs=[coords=http://rsg.pml.ac.uk/wps/testdata/coords.txt;outputSRS=EPSG:32630;inputSRS=EPSG:4326]
>>>>
>>>> http://rsg.pml.ac.uk/wps/vector.cgi?request=execute&service=WPS&version=1.0.0&identifier=v.net.path&datainputs=[input=http://rsg.pml.ac.uk/wps/example/graph.gml;file=1%20-960123.1421801624%204665723.56559387%20-101288.65106088226%205108200.011823481]
>>>>
>>>> I'll give a look at the code and test it
>>>>
>>>> Jorge
>>>>
>>>> On 07/11/11 14:42, Cinquini, Luca (3880) wrote:
>>>>> Hi all,
>>>>>   I have created a wps branch of owslib that contains a first draft support for WPS.
>>>>>
>>>>> The branch is available here: https://owslib.svn.sourceforge.net/svnroot/owslib/branches/wps
>>>>>
>>>>> The module has been tested against the USGS WPS service - does anybody know of another service to test against ?
>>>>>
>>>>> A good starting point to test functionality is the file README_WPS.txt
>>>>>
>>>>> All WPS functionality is included in separate files, except for a small addition to util.py to set the 'text/xml' header for a POST request.
>>>>>
>>>>> All feedback appreciated,
>>>>>
>>>>> thanks, Luca
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