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package eu.dnetlib.msro.workflows.hadoop;
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import javax.annotation.Resource;
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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 com.googlecode.sarasvati.Arc;
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import com.googlecode.sarasvati.NodeToken;
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import eu.dnetlib.enabling.is.registry.rmi.ISRegistryException;
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import eu.dnetlib.enabling.is.registry.rmi.ISRegistryService;
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import eu.dnetlib.enabling.locators.UniqueServiceLocator;
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import eu.dnetlib.msro.workflows.nodes.AsyncJobNode;
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public class IndexDSUpdateJobNode extends AsyncJobNode {
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private static final Log log = LogFactory.getLog(IndexDSUpdateJobNode.class); // NOPMD by marko on 11/24/08 5:02 PM
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public final static String N_RECORDS_PARAM = "blackboard:param:index.status code: 0";
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@Resource
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private UniqueServiceLocator serviceLocator;
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@Override
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public String execute(final NodeToken token) throws Exception {
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final String dsId = token.getEnv().getAttribute("index_id");
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final String version = token.getEnv().getAttribute("index.feed.timestamp");
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try {
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final int count = Integer.parseInt(token.getEnv().getAttribute(N_RECORDS_PARAM));
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log.info("updating indexDS: " + dsId + " version: " + version + " record count: " + count);
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updateIndexDS(dsId, version, count);
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} catch (NumberFormatException e) {
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log.warn("unable to find index feeding details in the workflow env, skippind DS update");
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}
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return Arc.DEFAULT_ARC;
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}
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/**
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* method updates the given indexDataStructureId INDEX_SIZE, INDEX_LAST_UPDATE
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*
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* @param dsId
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* @param size
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* @return true if the update was performed successfully, false otherwise
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* @throws ISRegistryException
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*/
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private boolean updateIndexDS(final String dsId, final String version, final long count) throws ISRegistryException {
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final String xquery = "for $x in collection('')/RESOURCE_PROFILE[.//RESOURCE_IDENTIFIER/@value = '" + dsId + "']"
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+ " return update value $x//INDEX_SIZE with " + String.valueOf(count) + ","
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+ "for $x in collection('')/RESOURCE_PROFILE[.//RESOURCE_IDENTIFIER/@value = '" + dsId + "']"
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+ " return update value $x//INDEX_LAST_UPDATE with '" + version + "' ";
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log.debug("\n\n updating indexDataStructure: " + xquery + "\n\n");
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return serviceLocator.getService(ISRegistryService.class).executeXUpdate(xquery);
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}
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}
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