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package eu.dnetlib.index.action;
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import eu.dnetlib.utils.MetadataReference;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardServerAction;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardServerHandler;
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import eu.dnetlib.index.IndexBackendDescriptor;
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import eu.dnetlib.index.IndexBackendEnumerator;
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import eu.dnetlib.index.IndexServerDAOMap;
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import eu.dnetlib.rmi.provision.IndexServiceException;
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import org.antlr.stringtemplate.StringTemplate;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Required;
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/**
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* The Class manage the blackboard action of Create Index.
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*/
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public class CreateIndexAction extends AbstractIndexAction implements BlackboardServerAction<IndexAction> {
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private static final Log log = LogFactory.getLog(CreateIndexAction.class);
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@Autowired
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private IndexServerDAOMap indexServerDAOMap;
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@Autowired
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private IndexBackendEnumerator backendEnumerator;
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/**
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* index ds template.
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*/
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private transient StringTemplate indexDsTemplate;
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/**
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* {@inheritDoc}
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*
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* @see BlackboardServerAction#execute(BlackboardServerHandler,
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* BlackboardJob)
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*/
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@Override
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public void execute(final BlackboardServerHandler handler, final BlackboardJob job) throws IndexServiceException {
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final MetadataReference mdRef = getMetadataReference(job);
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if ((mdRef.getFormat() == null) || (mdRef.getLayout() == null))
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throw new IndexServiceException("some Blackboard parameter is missing in CREATE message");
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final String fields = getMDFormatFields(mdRef);
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if (fields.isEmpty()) throw new IndexServiceException("No result getting index layout informations");
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final String backendId = getBackend(job);
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if (backendId == null) throw new IndexServiceException("No backend identifier information in CREATE message");
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final String dataStructure = getDataStructure(mdRef, backendId);
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final String newId = serviceTools.registerProfile(dataStructure);
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log.info("registered DsId: " + newId + "\n" + dataStructure);
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indexServerDAOMap.getIndexServerDAO(backendId).createIndexCollection(mdRef, fields);
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serviceTools.incrementHandledDataStructures(backendId);
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job.getParameters().put("id", newId);
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handler.done(job);
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}
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/**
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* Method applies given format, layout and interpretation to the index dataStructure template.
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*
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* @return String representation of the indexDataStructure
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* @throws IndexServiceException
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*/
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private String getDataStructure(final MetadataReference mdRef, final String backendIdentifier) throws IndexServiceException {
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final StringTemplate ds = new StringTemplate(indexDsTemplate.getTemplate());
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IndexBackendDescriptor backendDescriptor = backendEnumerator.getDescriptor(backendIdentifier);
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if (backendDescriptor == null) throw new IndexServiceException("No backend identifier found id:" + backendIdentifier);
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String backendName = backendDescriptor.getEndpoint().get(IndexBackendDescriptor.ID);
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if (backendName == null) throw new IndexServiceException("No backend name associtated to the identifier with id:" + backendIdentifier);
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ds.setAttribute("serviceUri", getServiceAddress(backendIdentifier));
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ds.setAttribute("format", mdRef.getFormat());
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ds.setAttribute("layout", mdRef.getLayout());
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ds.setAttribute("interpretation", mdRef.getInterpretation());
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ds.setAttribute("backendID", backendIdentifier);
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ds.setAttribute("backendNAME", backendName);
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return ds.toString();
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}
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@Required
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public void setIndexDsTemplate(final StringTemplate indexDsTemplate) {
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this.indexDsTemplate = indexDsTemplate;
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}
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}
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