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package eu.dnetlib.data.mapreduce.hbase.dedup;
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import java.io.IOException;
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import java.util.Collection;
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import java.util.List;
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import java.util.Map;
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import com.google.common.collect.Maps;
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import eu.dnetlib.data.graph.model.DNGFDecoder;
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import eu.dnetlib.data.mapreduce.JobParams;
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import eu.dnetlib.data.mapreduce.util.dao.HBaseTableDAO;
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import eu.dnetlib.data.proto.DNGFProtos.DNGFEntity;
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import eu.dnetlib.data.proto.DliFieldTypeProtos;
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import eu.dnetlib.data.proto.DliProtos;
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import eu.dnetlib.data.proto.TypeProtos.Type;
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import eu.dnetlib.pace.clustering.BlacklistAwareClusteringCombiner;
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import eu.dnetlib.pace.config.DedupConfig;
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import eu.dnetlib.pace.model.MapDocument;
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import eu.dnetlib.pace.model.ProtoDocumentBuilder;
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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.apache.hadoop.hbase.client.Result;
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import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
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import org.apache.hadoop.hbase.mapreduce.TableMapper;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.io.Text;
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public class DedupMapper extends TableMapper<Text, ImmutableBytesWritable> {
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private static final Log log = LogFactory.getLog(DedupMapper.class);
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private DedupConfig dedupConf;
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private Map<String, List<String>> blackListMap = Maps.newHashMap();
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private Text outKey;
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private ImmutableBytesWritable ibw;
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@Override
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protected void setup(final Context context) throws IOException, InterruptedException {
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final String dedupConfJson = context.getConfiguration().get(JobParams.DEDUP_CONF);
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log.info("pace conf strings");
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log.info("pace conf: " + dedupConfJson);
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dedupConf = DedupConfig.load(dedupConfJson);
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blackListMap = dedupConf.getPace().getBlacklists();
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outKey = new Text();
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ibw = new ImmutableBytesWritable();
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log.info("pace conf");
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log.info("entity type: " + dedupConf.getWf().getEntityType());
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log.info("clustering: " + dedupConf.getPace().getClustering());
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log.info("conditions: " + dedupConf.getPace().getConditions());
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log.info("fields: " + dedupConf.getPace().getModel());
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log.info("blacklists: " + blackListMap);
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log.info("wf conf: " + dedupConf.toString());
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}
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@Override
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protected void map(final ImmutableBytesWritable keyIn, final Result result, final Context context) throws IOException, InterruptedException {
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// log.info("got key: " + new String(keyIn.copyBytes()));
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final byte[] body = result.getValue(HBaseTableDAO.cfMetadataByte(), dedupConf.getWf().getEntityType().getBytes());
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if (body != null) {
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final DNGFDecoder decoder = DNGFDecoder.decode(body, DliFieldTypeProtos.completionStatus, DliProtos.completionStatus, DliProtos.resolvedfrom, DliProtos.typedIdentifier);
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if (decoder.getDNGF().getDataInfo().getDeletedbyinference()) {
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context.getCounter(dedupConf.getWf().getEntityType(), "deleted by inference").increment(1);
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return;
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}
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final DNGFEntity entity = decoder.getEntity();
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context.getCounter(entity.getType().toString(), "decoded").increment(1);
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if (entity.getType().equals(Type.valueOf(dedupConf.getWf().getEntityType()))) {
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// GeneratedMessage metadata = DNGFEntityDecoder.decode(entity).getEntity();
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final MapDocument doc = ProtoDocumentBuilder.newInstance(Bytes.toString(keyIn.copyBytes()), entity, dedupConf.getPace().getModel());
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emitNGrams(context, doc, BlacklistAwareClusteringCombiner.filterAndCombine(doc, dedupConf, blackListMap));
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}
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} else {
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context.getCounter(dedupConf.getWf().getEntityType(), "missing body").increment(1);
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}
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}
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private void emitNGrams(final Context context, final MapDocument doc, final Collection<String> ngrams) throws IOException, InterruptedException {
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for (final String ngram : ngrams) {
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outKey.set(ngram);
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ibw.set(doc.toByteArray());
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context.write(outKey, ibw);
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}
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}
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}
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