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package eu.dnetlib.data.mapreduce.hbase.broker.enrich;
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import java.io.IOException;
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import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Maps;
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import com.google.common.collect.Streams;
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import eu.dnetlib.data.mapreduce.hbase.broker.ProjectEventFactory;
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import eu.dnetlib.data.mapreduce.hbase.broker.model.EventWrapper;
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import eu.dnetlib.data.proto.OafProtos.Oaf;
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import org.apache.commons.lang.StringUtils;
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import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
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import org.dom4j.DocumentException;
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import static eu.dnetlib.data.mapreduce.util.OafHbaseUtils.getKey;
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/**
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* Created by claudio on 08/07/16.
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*/
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public class ProjectEnrichmentReducer extends AbstractEnrichmentReducer {
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@Override
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protected String counterGroup() {
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return "Broker Enrichment projects";
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}
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@Override
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protected void reduce(final ImmutableBytesWritable key, final Iterable<ImmutableBytesWritable> values, final Context context)
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throws IOException, InterruptedException {
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final Map<String, Oaf> projects = Maps.newHashMap();
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final List<Oaf> pubs = Lists.newArrayList();
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Streams.stream(values).limit(LIMIT).map(EnrichmentReducer::toOaf).forEach(oaf -> {
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switch (oaf.getEntity().getType()) {
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case result:
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pubs.add(oaf);
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break;
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case project:
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projects.put(oaf.getEntity().getId(), oaf);
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break;
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default:
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throw new IllegalArgumentException("invalid type: " + oaf.getEntity().getType());
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}
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});
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if (projects.isEmpty() || pubs.isEmpty()) {
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context.getCounter(counterGroup(), "Events Skipped - Nothing to do").increment(1);
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return;
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}
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try {
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generateEvents(pubs, projects, context);
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} catch (final DocumentException e) {
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throw new RuntimeException(e);
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}
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}
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private void generateEvents(final List<Oaf> pubs, final Map<String, Oaf> projects, final Context context)
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throws IOException, InterruptedException, DocumentException {
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final List<Oaf> valid = pubs.stream()
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.map(p -> addProjects(p, projects))
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.filter(r -> !r.getEntity().getCachedOafRelList().isEmpty())
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.collect(Collectors.toList());
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if (valid.isEmpty()) {
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context.getCounter(counterGroup(), "Events Skipped - Missing project").increment(1);
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return;
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}
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for (final Oaf current : valid) {
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final String currentId = current.getEntity().getId();
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final String currentDsId = StringUtils.substringAfter(getKey(current.getEntity().getCollectedfromList()), "|");
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final String currentDsType = dsTypeMap.get(currentDsId);
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// System.out.println(String.format("'%s' -> '%s'", currentDsId, currentDsType));
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if (StringUtils.isBlank(currentDsType) && !dsWhitelist.contains(currentDsId)) {
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context.getCounter(counterGroup(), "Events Skipped - Datasource type excluded").increment(1);
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} else if (dsBlacklist.contains(currentDsId)) {
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context.getCounter(counterGroup(), "Events Skipped - Datasource blacklisted").increment(1);
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} else {
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final List<EventWrapper> events = Lists.newArrayList();
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if (valid.size() == 1) {
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events.addAll(ProjectEventFactory.process(context, valid.get(0)));
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} else {
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for (final Oaf other : valid) {
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final String otherId = other.getEntity().getId();
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if (!currentId.equals(otherId)) {
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final double similarity = similarity(current, other);
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if (similarity >= dedupConf.getWf().getThreshold()) {
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final float trust = scale(similarity);
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events.addAll(ProjectEventFactory.process(context, current, other, trust));
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} else {
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context.getCounter(counterGroup(), "d < " + dedupConf.getWf().getThreshold()).increment(1);
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}
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}
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}
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}
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emit(events, context);
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}
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}
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}
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private Oaf addProjects(final Oaf current, final Map<String, Oaf> projects) {
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final Oaf.Builder oafBuilder = Oaf.newBuilder(current);
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final List<Oaf> cachedRels = Lists.newArrayList();
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for (final Oaf.Builder cachedOafRel : oafBuilder.getEntityBuilder().getCachedOafRelBuilderList()) {
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final String projectId = cachedOafRel.getRel().getTarget();
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if (projects.containsKey(projectId)) {
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final Oaf project = projects.get(projectId);
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cachedOafRel.getRelBuilder().setCachedOafTarget(project);
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cachedRels.add(cachedOafRel.build());
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}
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}
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oafBuilder.getEntityBuilder().clearCachedOafRel().addAllCachedOafRel(cachedRels);
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return oafBuilder.build();
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}
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}
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