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package eu.dnetlib.data.mapreduce.util;
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import java.util.*;
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import java.util.function.Predicate;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import com.google.common.base.Splitter;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Sets;
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import eu.dnetlib.data.proto.FieldTypeProtos.*;
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import static eu.dnetlib.openaire.hadoop.utils.HBaseTableUtils.*;
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import eu.dnetlib.data.proto.OafProtos;
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import eu.dnetlib.data.proto.TypeProtos;
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import eu.dnetlib.openaire.hadoop.utils.HBaseTableUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.hadoop.hbase.client.Durability;
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import org.apache.hadoop.hbase.client.Put;
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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 com.google.common.base.Function;
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import com.google.protobuf.InvalidProtocolBufferException;
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import eu.dnetlib.data.proto.OafProtos.Oaf;
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import eu.dnetlib.data.transform.OafUtils;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.mapreduce.Mapper;
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import org.apache.hadoop.mapreduce.Reducer;
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public class OafHbaseUtils extends OafUtils {
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public static OafDecoder decode(final ImmutableBytesWritable oaf) {
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return new OafDecoder(oaf.copyBytes());
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}
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public static Function<ImmutableBytesWritable, OafDecoder> decoder() {
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return input -> OafDecoder.decode(input.copyBytes());
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}
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public static Iterable<Oaf> asOaf(final Iterable<ImmutableBytesWritable> in) {
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return Iterables.transform(in, oafDecoder());
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}
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public static Function<ImmutableBytesWritable, Oaf> oafDecoder() {
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return input -> parse(input);
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}
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public static Oaf parse(final ImmutableBytesWritable input) {
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try {
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return Oaf.parseFrom(input.copyBytes());
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} catch (final InvalidProtocolBufferException e) {
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throw new IllegalArgumentException(e);
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}
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}
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public static <T> String getValue(T t) {
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return mapValue(t);
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}
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public static <T> String getKey(T t) {
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return mapKey(t);
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}
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public static <T> String getValue(Iterable<T> ts) {
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return Iterables.getFirst(listValues(ts), "");
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}
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public static <T> Set<String> hashSetValues(Iterable<T> ts) {
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return Sets.newHashSet(Iterables.transform(ts, t -> mapValue(t)));
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}
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public static <T> List<String> listValues(Iterable<T> ts) {
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return Lists.newArrayList(Iterables.transform(ts, t -> mapValue(t)));
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}
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public static <T> List<String> listObjects(Iterable<T> ts) {
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return Lists.newArrayList(Iterables.transform(ts, t -> mapObject(t)));
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}
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public static <T> String getKey(Iterable<T> ts) {
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return Iterables.getFirst(listKeys(ts), "");
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}
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public static <T> List<String> listKeys(Iterable<T> ts) {
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return Lists.newArrayList(Iterables.transform(ts, t -> mapKey(t)));
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}
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public static <T> Set<String> hashSetKeys(Iterable<T> ts) {
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return Sets.newHashSet(Iterables.transform(ts, t -> mapKey(t)));
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}
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private static <T> String mapKey(final T t) {
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if (t instanceof KeyValue) return ((KeyValue) t).getKey();
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if (t instanceof String) return (String) t;
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if (t instanceof Qualifier) return ((Qualifier) t).getClassid();
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throw new IllegalArgumentException(String.format("type %s not mapped", t.getClass()));
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}
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public static <T> String mapValue(final T t) {
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if (t instanceof StructuredProperty) return ((StructuredProperty) t).getValue();
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if (t instanceof KeyValue) return ((KeyValue) t).getValue();
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if (t instanceof String) return (String) t;
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if (t instanceof StringField) return ((StringField) t).getValue();
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if (t instanceof Qualifier) return ((Qualifier) t).getClassname();
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if (t instanceof Author) {
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Author a = (Author) t;
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if (a.getPidCount() == 0) {
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return a.getFullname();
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} else {
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return a.getFullname() + " " + listObjects(a.getPidList());
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}
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}
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throw new IllegalArgumentException(String.format("type %s not mapped", t.getClass()));
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}
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public static <T> String mapObject(final T t) {
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if (t instanceof KeyValue) {
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KeyValue kv = (KeyValue) t;
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return kv.getKey() + ":" + kv.getValue();
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}
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if (t instanceof String) return (String) t;
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throw new IllegalArgumentException(String.format("type %s not mapped", t.getClass()));
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}
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public static List<String> getPropertyValues(final Reducer.Context context, final String name) {
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return doGetPropertyValues(context.getConfiguration().get(name, ""));
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}
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public static List<String> getPropertyValues(final Mapper.Context context, final String name) {
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return doGetPropertyValues(context.getConfiguration().get(name, ""));
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}
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private static List<String> doGetPropertyValues(final String s) {
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return Lists.newArrayList(Splitter.on(",").omitEmptyStrings().split(s));
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}
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public static List<Oaf> rel(final Result value) {
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return value.list().stream()
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.filter(kv -> {
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final String q = new String(kv.getQualifier());
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return q.matches(OafRowKeyDecoder.ID_REGEX);
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})
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.filter(kv -> kv.getValue() != null && kv.getValue().length > 0)
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.map(kv -> parseProto(kv.getValue()))
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.collect(Collectors.toList());
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}
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public static Oaf parseProto(final byte[] value) {
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final OafDecoder d = OafDecoder.decode(value);
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return d.getOaf();
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}
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public static Put asPut(final Oaf oaf) {
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switch (oaf.getKind()) {
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case entity:
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final Put entity = getPut(oaf.getEntity().getId());
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byte[] cf = Bytes.toBytes(oaf.getEntity().getType().toString());
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return entity.add(cf, DedupUtils.BODY_B, oaf.toByteArray());
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case relation:
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final OafProtos.OafRel rel = oaf.getRel();
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final Put putRel = getPut(rel.getSource());
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final OafRelDecoder relDecoder = OafRelDecoder.decode(rel);
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final byte[] cfRel = Bytes.toBytes(relDecoder.getCFQ());
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final byte[] qualifier = Bytes.toBytes(rel.getTarget());
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return putRel.add(cfRel, qualifier, oaf.toByteArray());
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default:
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throw new IllegalArgumentException("invalid kind");
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}
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}
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private static Put getPut(final String rowkey) {
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final Put put = new Put(Bytes.toBytes(rowkey));
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put.setDurability(Durability.USE_DEFAULT);
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return put;
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}
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public static byte[] getBodyB(final Result value, final TypeProtos.Type type) {
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return value.getValue(Bytes.toBytes(type.toString()), DedupUtils.BODY_B);
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}
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public static Oaf getBody(final Result value, final TypeProtos.Type type) throws InvalidProtocolBufferException {
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final byte[] body = getBodyB(value, type);
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return body != null ? parseProto(body) : null;
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}
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}
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