/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wps;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.opengis.ows11.KeywordsType;
import net.opengis.ows11.OperationType;
import net.opengis.ows11.OperationsMetadataType;
import net.opengis.ows11.Ows11Factory;
import net.opengis.ows11.ResponsiblePartySubsetType;
import net.opengis.ows11.ServiceIdentificationType;
import net.opengis.ows11.ServiceProviderType;
import net.opengis.wps10.DefaultType2;
import net.opengis.wps10.GetCapabilitiesType;
import net.opengis.wps10.LanguagesType;
import net.opengis.wps10.LanguagesType1;
import net.opengis.wps10.ProcessBriefType;
import net.opengis.wps10.ProcessOfferingsType;
import net.opengis.wps10.WPSCapabilitiesType;
import net.opengis.wps10.Wps10Factory;
import org.eclipse.emf.common.util.ECollections;
import org.geoserver.config.GeoServerInfo;
import org.geoserver.ows.Ows11Util;
import org.geoserver.ows.util.RequestUtils;
import org.geoserver.wps.ppio.ProcessParameterIO;
import org.geotools.data.Parameter;
import org.geotools.process.ProcessFactory;
import org.geotools.process.Processors;
import org.geotools.util.logging.Logging;
import org.opengis.feature.type.Name;
import org.springframework.context.ApplicationContext;
/**
* @author Lucas Reed, Refractions Research Inc
*/
public class GetCapabilities {
public WPSInfo wps;
ApplicationContext context;
static final Logger LOGGER = Logging.getLogger(GetCapabilities.class);
private static Set<Name> PROCESS_BLACKLIST = Collections.EMPTY_SET;
public GetCapabilities(WPSInfo wps, ApplicationContext context) {
this.wps = wps;
this.context = context;
}
public WPSCapabilitiesType run(GetCapabilitiesType request) throws WPSException {
// do the version negotiation dance
List<String> provided = Collections.singletonList("1.0.0");
List<String> accepted = null;
if (request.getAcceptVersions() != null)
accepted = request.getAcceptVersions().getVersion();
String version = RequestUtils.getVersionOws11(provided, accepted);
if (!"1.0.0".equals(version)) {
throw new WPSException("Could not understand version:" + version);
}
// TODO: add update sequence negotiation
// encode the response
Wps10Factory wpsf = Wps10Factory.eINSTANCE;
Ows11Factory owsf = Ows11Factory.eINSTANCE;
WPSCapabilitiesType caps = wpsf.createWPSCapabilitiesType();
caps.setVersion("1.0.0");
// TODO: make configurable
caps.setLang("en");
// ServiceIdentification
ServiceIdentificationType si = owsf.createServiceIdentificationType();
caps.setServiceIdentification(si);
si.getTitle().add(Ows11Util.languageString(wps.getTitle()));
si.getAbstract().add(Ows11Util.languageString(wps.getAbstract()));
KeywordsType kw = Ows11Util.keywords(wps.keywordValues());
;
if (kw != null) {
si.getKeywords().add(kw);
}
si.setServiceType(Ows11Util.code("WPS"));
si.getServiceTypeVersion().add("1.0.0");
si.setFees(wps.getFees());
if (wps.getAccessConstraints() != null) {
si.getAccessConstraints().add(wps.getAccessConstraints());
}
// ServiceProvider
ServiceProviderType sp = owsf.createServiceProviderType();
caps.setServiceProvider(sp);
// TODO: set provder name from context
GeoServerInfo geoServer = wps.getGeoServer().getGlobal();
if (geoServer.getContact().getContactOrganization() != null) {
sp.setProviderName(geoServer.getContact().getContactOrganization());
} else {
sp.setProviderName("GeoServer");
}
sp.setProviderSite(owsf.createOnlineResourceType());
sp.getProviderSite().setHref(geoServer.getOnlineResource());
sp.setServiceContact(responsibleParty(geoServer, owsf));
// OperationsMetadata
OperationsMetadataType om = owsf.createOperationsMetadataType();
caps.setOperationsMetadata(om);
OperationType gco = owsf.createOperationType();
gco.setName("GetCapabilities");
gco.getDCP().add(Ows11Util.dcp("wps", request));
om.getOperation().add(gco);
OperationType dpo = owsf.createOperationType();
dpo.setName("DescribeProcess");
dpo.getDCP().add(Ows11Util.dcp("wps", request));
om.getOperation().add(dpo);
OperationType eo = owsf.createOperationType();
eo.setName("Execute");
eo.getDCP().add(Ows11Util.dcp("wps", request));
om.getOperation().add(eo);
ProcessOfferingsType po = wpsf.createProcessOfferingsType();
caps.setProcessOfferings(po);
// gather the process list
for (ProcessFactory pf : Processors.getProcessFactories()) {
for (Name name : pf.getNames()) {
if (!getProcessBlacklist().contains(name)) {
ProcessBriefType p = wpsf.createProcessBriefType();
p.setProcessVersion(pf.getVersion(name));
po.getProcess().add(p);
p.setIdentifier(Ows11Util.code(name));
p.setTitle(Ows11Util.languageString(pf.getTitle(name)));
p.setAbstract(Ows11Util.languageString(pf.getDescription(name)));
}
}
}
// sort it
ECollections.sort(po.getProcess(), new Comparator() {
public int compare(Object o1, Object o2) {
ProcessBriefType pb1 = (ProcessBriefType) o1;
ProcessBriefType pb2 = (ProcessBriefType) o2;
final String id1 = pb1.getIdentifier().getValue();
final String id2 = pb2.getIdentifier().getValue();
return id1.compareTo(id2);
}
});
LanguagesType1 languages = wpsf.createLanguagesType1();
caps.setLanguages(languages);
DefaultType2 defaultLanguage = wpsf.createDefaultType2();
languages.setDefault(defaultLanguage);
defaultLanguage.setLanguage("en-US");
LanguagesType supportedLanguages = wpsf.createLanguagesType();
languages.setSupported(supportedLanguages);
supportedLanguages.getLanguage().add("en-US");
return caps;
// Version detection and alternative invocation if being implemented.
}
/**
* Checks if our WPS can really handle this process inputs and outputs
*
* @param pf
* @param name
* @return
*/
Set<Name> getProcessBlacklist() {
synchronized (PROCESS_BLACKLIST) {
if (PROCESS_BLACKLIST == Collections.EMPTY_SET) {
Set<Name> blacklist = new HashSet<Name>();
for (ProcessFactory pf : Processors.getProcessFactories()) {
int count = 0;
for (Name name : pf.getNames()) {
try {
// check inputs
for (Parameter<?> p : pf.getParameterInfo(name).values()) {
List<ProcessParameterIO> ppios = ProcessParameterIO.findAll(p, context);
if (ppios.isEmpty()) {
LOGGER.log(Level.INFO, "Blacklisting process " + name.getURI()
+ " as the input " + p.key + " of type " + p.type
+ " cannot be handled");
blacklist.add(name);
}
}
// check outputs
for (Parameter<?> p : pf.getResultInfo(name, null).values()) {
List<ProcessParameterIO> ppios = ProcessParameterIO.findAll(p, context);
if (ppios.isEmpty()) {
LOGGER.log(Level.INFO, "Blacklisting process " + name.getURI()
+ " as the output " + p.key + " of type " + p.type
+ " cannot be handled");
blacklist.add(name);
}
}
} catch(Throwable t) {
blacklist.add(name);
}
if(!blacklist.contains(name)) {
count++;
}
}
LOGGER.info("Found " + count + " bindable processes in " + pf.getTitle());
}
PROCESS_BLACKLIST = blacklist;
}
}
return PROCESS_BLACKLIST;
}
ResponsiblePartySubsetType responsibleParty(GeoServerInfo global, Ows11Factory f) {
ResponsiblePartySubsetType rp = f.createResponsiblePartySubsetType();
return rp;
}
}