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ZOO Project WPS implementation testing
ZOO-PSC would like to report results of tests conducted on ZOO-Kernel WPS implementation. Comparision of some current WPS implementation was reported in presentation entitled "COMPLIANCE TESTING OF OPEN SOURCE SOFTWARE FOR WEB PROCESSING SERVICES" link. The presentation is based on report No. CIP-ICT-PSP-2009-3-250474 entitled “Web Processing Service Study” for the client/project: "BRIdging SErvices, Information and Data for Europe" (BRISEIDE) link.
Our testing details are presented in more details below. The test with ZOO WPS are contrary to the presentation and report mentioned above. We call upon the authors of the presentation and report referred above to make appropriate corrections in their presentation and report based on the results outlined below. We hope that more well planned and coordinated implementation testing can be done in the future.
Gérald Fenoy (Chair ZOO PSC)
ZOO Project WPS testing details
In above mentioned report, some unusual behaviour of the ZOO Kernel was pointed out. Hence, the ZOO PSC decided to answer to this report by making his own report about ZOO Project compliancy testing using the same way as in the report.
First note about this response that we are currently preparing, we weren't able to use XMLSpy 2007 Professional version as no more Evaluation version is available, so we used the XMLSpy 2011 Professional one as we can use it for an evaluation period of 30 days.
All the following requests give documents which are valid (using XMLSpy 2011 Professional) against the used schemas.
GetCapabilities request
In the section 5.5 of the report an error was pointed out about some unexpected metadata : namely Test attribute to the Metadata node getting the "Demo" value. This was due to wrong ZCFG files of the first Services we made in the begining of the 2009 year.
The provided URL to run this test is wrong, one would use this one :
http://zoo-project.org/cgi-bin-new/zoo_loader.cgi?REQUEST=GetCapabilities&SERVICE=WPS&version=1.0.0
So for the GetCapabilities request, the Capabilities document output by the ZOO Kernel is Valid.
DescribeProcess request
In the section 5.11 of the report we can read that the ZOO Kernel can't handle the DescribeProcess request and output a valid ProcessDescriptions Document. Indeed the first versions of ZOO Kernel was wrong in that, but hopefully the last one, included in OSGeoLiveDVD 4.0 returns already the valid ProcessDescriptions document.
Using the url above we can confirm that ZOO Kernel is Valid for the DescribeProcess request.
Note that this request is Valid also :
Execute request
In the 5.13 section of the report you can get the requests for Execute as XML POST requests, as it is the mandatory method.
To use the XML POST requests provided in the report or easier by using copy/paste from this page, please follow this link to paste in the HTML form.
section 5.17 (Synchronous call using asReference)
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd"> <ows:Identifier>Buffer</ows:Identifier> <wps:DataInputs> <wps:Input> <ows:Identifier>InputPolygon</ows:Identifier> <ows:Title>Playground area</ows:Title> <wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&version=1.0.0&request=GetFeature&typename=Znieff1&maxfeatures=1"/></wps:Input> <wps:Input> <ows:Identifier>BufferDistance</ows:Identifier> <ows:Title>Distance which people will walk to get to a playground.</ows:Title> <wps:Data> <wps:LiteralData>10</wps:LiteralData> </wps:Data> </wps:Input> </wps:DataInputs> <wps:ResponseForm> <wps:ResponseDocument storeExecuteResponse="false"> <wps:Output asReference="true"> <ows:Identifier>Result</ows:Identifier> </wps:Output> </wps:ResponseDocument> </wps:ResponseForm> </wps:Execute>
section 5.18.1.4 (Synchronous call with data included)
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd"> <ows:Identifier>Buffer</ows:Identifier> <wps:DataInputs> <wps:Input> <ows:Identifier>InputPolygon</ows:Identifier> <ows:Title>Playground area</ows:Title> <wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&version=1.0.0&request=GetFeature&typename=Znieff1&maxfeatures=1"/></wps:Input> <wps:Input> <ows:Identifier>BufferDistance</ows:Identifier> <ows:Title>Distance which people will walk to get to a playground.</ows:Title> <wps:Data> <wps:LiteralData>10</wps:LiteralData> </wps:Data> </wps:Input> </wps:DataInputs> <wps:ResponseForm> <wps:ResponseDocument storeExecuteResponse="false"> <wps:Output asReference="false"> <ows:Identifier>Result</ows:Identifier> </wps:Output> </wps:ResponseDocument> </wps:ResponseForm> </wps:Execute>
section 5.23 (Asynchronous call with data asReference)
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd"> <ows:Identifier>Buffer</ows:Identifier> <wps:DataInputs> <wps:Input> <ows:Identifier>InputPolygon</ows:Identifier> <ows:Title>Playground area</ows:Title> <wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&version=1.0.0&request=GetFeature&typename=Znieff1&maxfeatures=1"/></wps:Input> <wps:Input> <ows:Identifier>BufferDistance</ows:Identifier> <ows:Title>Distance which people will walk to get to a playground.</ows:Title> <wps:Data> <wps:LiteralData>10</wps:LiteralData> </wps:Data> </wps:Input> </wps:DataInputs> <wps:ResponseForm> <wps:ResponseDocument storeExecuteResponse="true" status="true"> <wps:Output asReference="true"> <ows:Identifier>Result</ows:Identifier> </wps:Output> </wps:ResponseDocument> </wps:ResponseForm> </wps:Execute>
Here both statusLocation file and response are Valid.
Section Not Found (Asynchronous call with full data included)
Even if it is not mentioned in the original report, you can also use the storeExecuteReponse="true" for ResponseDocument with the asReference attribute for the Output settled to true as in the following request :
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd"> <ows:Identifier>Buffer</ows:Identifier> <wps:DataInputs> <wps:Input> <ows:Identifier>InputPolygon</ows:Identifier> <ows:Title>Playground area</ows:Title> <wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&version=1.0.0&request=GetFeature&typename=Znieff1&maxfeatures=1"/></wps:Input> <wps:Input> <ows:Identifier>BufferDistance</ows:Identifier> <ows:Title>Distance which people will walk to get to a playground.</ows:Title> <wps:Data> <wps:LiteralData>10</wps:LiteralData> </wps:Data> </wps:Input> </wps:DataInputs> <wps:ResponseForm> <wps:ResponseDocument storeExecuteResponse="true" status="true"> <wps:Output asReference="false"> <ows:Identifier>Result</ows:Identifier> </wps:Output> </wps:ResponseDocument> </wps:ResponseForm> </wps:Execute>
The resulting document and the statusLocation document are both Valid.
section 5.28 (RawDataOutput test)
<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd"> <ows:Identifier>Buffer</ows:Identifier> <wps:DataInputs> <wps:Input> <ows:Identifier>InputPolygon</ows:Identifier> <ows:Title>Playground area</ows:Title> <wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&version=1.0.0&request=GetFeature&typename=Znieff1&maxfeatures=1"/></wps:Input> <wps:Input> <ows:Identifier>BufferDistance</ows:Identifier> <ows:Title>Distance which people will walk to get to a playground.</ows:Title> <wps:Data> <wps:LiteralData>10</wps:LiteralData> </wps:Data> </wps:Input> </wps:DataInputs> <wps:ResponseForm> <wps:RawDataOutput> <ows:Identifier>Result</ows:Identifier> </wps:RawDataOutput> </wps:ResponseForm> </wps:Execute>
The result is valid in the sens that it is a JSON string representing the resulting polygon.
