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35869
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claudio.at
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package eu.dnetlib.msro.workflows.dedup;
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35834
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claudio.at
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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.Engine;
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import com.googlecode.sarasvati.NodeToken;
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import eu.dnetlib.enabling.tools.blackboard.BlackboardJob;
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import eu.dnetlib.msro.workflows.nodes.blackboard.BlackboardWorkflowJobListener;
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36240
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claudio.at
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public class DedupGrouperJobNode extends DedupConfigurationAwareJobNode {
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35834
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claudio.at
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// TODO factor out this constant, it should be a configuration parameter
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public static final int DEDUP_GROUPER_MAX_LOOPS = 10;
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public static final String DEDUP_GROUPER_LOOPER = "dedup.grouper.looper";
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public static final String DEDUP_GROUPER_CURR_WRITTEN_RELS = "dedup.grouper.written.rels";
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public static final String DEDUP_GROUPER_PREV_WRITTEN_RELS = "dedup.grouper.prev.written.rels";
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private static final Log log = LogFactory.getLog(DedupGrouperJobNode.class); // NOPMD by marko on 11/24/08 5:02 PM
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private class DedupBlackboardWorkflowJobListener extends BlackboardWorkflowJobListener {
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public DedupBlackboardWorkflowJobListener(final Engine engine, final NodeToken token) {
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super(engine, token);
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}
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@Override
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protected void onDone(final BlackboardJob job) {
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final int times = currentIteration(getToken());
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final String curr = job.getParameters().get(DEDUP_GROUPER_CURR_WRITTEN_RELS);
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if (times == 0) {
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getToken().getFullEnv().setAttribute(DEDUP_GROUPER_PREV_WRITTEN_RELS, -1);
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}
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if ((times >= DEDUP_GROUPER_MAX_LOOPS) || isStable(getToken(), curr)) {
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super.complete(job, "done");
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} else {
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log.info("incrementing dedup.grouper.looper to " + (times + 1));
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getToken().getFullEnv().setAttribute(DEDUP_GROUPER_LOOPER, times + 1);
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getToken().getFullEnv().setAttribute(DEDUP_GROUPER_PREV_WRITTEN_RELS, curr);
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super.complete(job, Arc.DEFAULT_ARC);
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}
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}
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}
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private int currentIteration(final NodeToken token) {
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try {
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final String sTimes = token.getFullEnv().getAttribute(DEDUP_GROUPER_LOOPER);
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log.info("read dedup.grouper.looper from fullEnv: '" + sTimes + "'");
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return Integer.parseInt(sTimes);
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} catch (final NumberFormatException e) {
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log.info("got empty dedup.grouper.looper, initializing to 0");
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return 0;
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}
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}
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private boolean isStable(final NodeToken token, final String sCurr) {
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final String sPrev = token.getFullEnv().getAttribute(DEDUP_GROUPER_PREV_WRITTEN_RELS);
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log.info("Comparing written rels, prev=" + sPrev + ", curr=" + sCurr);
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try {
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final boolean b = Integer.parseInt(sCurr) == Integer.parseInt(sPrev);
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if (b) {
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log.info(" --- The number of written rels is STABLE");
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}
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return b;
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} catch (final Exception e) {
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log.error("Invalid parsing of written rels counters - curr: " + sCurr + ", prev: " + sPrev);
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return false;
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}
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}
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@Override
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protected BlackboardWorkflowJobListener generateBlackboardListener(final Engine engine, final NodeToken token) {
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return new DedupBlackboardWorkflowJobListener(engine, token);
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}
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}
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