Enable KML format for WPS export of vector layers

[giohappy]

Geoserver for GeoNode will ship the KMLPPIO plugin, which will add support to do KML exports for vector layers with WPS. We want to add this format to the available export formats for vector layers.

Tasks:

• check if something is needed in MapStore to enable this format for WPS
• configure this format inside the localConfig of GeoNode MapStore client. This format is granted to be available with Geoserver for GeoNode, since it will ship KMLPPIO, but we can't say it for a generic Geoserver with WPS. This means that the format should be configured inside the localConfig

Example request for a DownloadProcess for KML:

<?xml version="1.0" encoding="UTF-8"?><wps:Execute version="1.0.0" service="WPS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.opengis.net/wps/1.0.0" xmlns:wfs="http://www.opengis.net/wfs" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:wcs="http://www.opengis.net/wcs/1.1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd">
  <ows:Identifier>gs:Download</ows:Identifier>
  <wps:DataInputs>
    <wps:Input>
      <ows:Identifier>layerName</ows:Identifier>
      <wps:Data>
        <wps:LiteralData>tiger:poi</wps:LiteralData>
      </wps:Data>
    </wps:Input>
    <wps:Input>
      <ows:Identifier>outputFormat</ows:Identifier>
      <wps:Data>
        <wps:LiteralData>application/vnd.google-earth.kml+xml</wps:LiteralData>
      </wps:Data>
    </wps:Input>
  </wps:DataInputs>
  <wps:ResponseForm>
    <wps:RawDataOutput mimeType="application/octet-stream">
      <ows:Identifier>result</ows:Identifier>
    </wps:RawDataOutput>
  </wps:ResponseForm>
</wps:Execute>

[giohappy]

@DavidQuartz Geoserver with WPS MKL output support has been deployed both for development (3.3.x) and master demo instances, so you can use them to test it.

A test with the following body worked for me.

<?xml version="1.0" encoding="UTF-8"?>
<wps:Execute xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns="http://www.opengis.net/wps/1.0.0" xmlns:dwn="http://geoserver.org/wps/download" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:wcs="http://www.opengis.net/wcs/1.1.1" xmlns:wfs="http://www.opengis.net/wfs" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0.0" service="WPS" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd">
   <ows:Identifier>gs:Download</ows:Identifier>
   <wps:DataInputs>
      <wps:Input>
         <ows:Identifier>layerName</ows:Identifier>
         <wps:Data>
            <wps:LiteralData>geonode:Comune_Napoli</wps:LiteralData>
         </wps:Data>
      </wps:Input>
      <wps:Input>
         <ows:Identifier>outputFormat</ows:Identifier>
         <wps:Data>
            <wps:LiteralData>application/vnd.google-earth.kml+xml</wps:LiteralData>
         </wps:Data>
      </wps:Input>
      <wps:Input>
         <ows:Identifier>cropToROI</ows:Identifier>
         <wps:Data>
            <wps:LiteralData>false</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>

[allyoucanmap]

@marthamareal could you please verify if this improvement is working as expected on 3.3.x and 4.x We merged the improvements here

• https://github.com/GeoNode/geonode-mapstore-client/pull/913
• https://github.com/GeoNode/geonode-mapstore-client/pull/908

[marthamareal]

@allyoucanmap, THe download of KML format is available both on master.demo and development.demo and i can download the kml file successfully.

[allyoucanmap]

@marthamareal thanks!