229 lines
8.8 KiB
Java
229 lines
8.8 KiB
Java
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package eu.dnetlib.dhp.broker.oa;
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import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
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import java.util.Optional;
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import org.apache.commons.io.IOUtils;
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import org.apache.spark.SparkConf;
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import org.apache.spark.api.java.function.MapFunction;
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import org.apache.spark.sql.Dataset;
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import org.apache.spark.sql.Encoders;
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import org.apache.spark.sql.SaveMode;
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import org.apache.spark.sql.SparkSession;
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import org.apache.spark.sql.TypedColumn;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.dnetlib.broker.objects.OpenaireBrokerResult;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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import eu.dnetlib.dhp.broker.model.Event;
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import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
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import eu.dnetlib.dhp.broker.oa.util.ConversionUtils;
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import eu.dnetlib.dhp.broker.oa.util.EventFinder;
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import eu.dnetlib.dhp.broker.oa.util.EventGroup;
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import eu.dnetlib.dhp.broker.oa.util.aggregators.simple.ResultAggregator;
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import eu.dnetlib.dhp.broker.oa.util.aggregators.simple.ResultGroup;
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import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.OpenaireBrokerResultAggregator;
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import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.RelatedEntityFactory;
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import eu.dnetlib.dhp.common.HdfsSupport;
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import eu.dnetlib.dhp.schema.oaf.Project;
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import eu.dnetlib.dhp.schema.oaf.Publication;
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import eu.dnetlib.dhp.schema.oaf.Relation;
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import eu.dnetlib.dhp.schema.oaf.Result;
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import eu.dnetlib.dhp.schema.oaf.Software;
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import eu.dnetlib.dhp.utils.ISLookupClientFactory;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpService;
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import eu.dnetlib.pace.config.DedupConfig;
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import scala.Tuple2;
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public class GenerateEventsApplication {
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private static final Logger log = LoggerFactory.getLogger(GenerateEventsApplication.class);
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private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
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public static void main(final String[] args) throws Exception {
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(
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IOUtils
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.toString(
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GenerateEventsApplication.class
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.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/generate_broker_events.json")));
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parser.parseArgument(args);
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final Boolean isSparkSessionManaged = Optional
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.ofNullable(parser.get("isSparkSessionManaged"))
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.map(Boolean::valueOf)
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.orElse(Boolean.TRUE);
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log.info("isSparkSessionManaged: {}", isSparkSessionManaged);
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final String graphPath = parser.get("graphPath");
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log.info("graphPath: {}", graphPath);
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final String eventsPath = parser.get("eventsPath");
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log.info("eventsPath: {}", eventsPath);
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final String isLookupUrl = parser.get("isLookupUrl");
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log.info("isLookupUrl: {}", isLookupUrl);
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final String dedupConfigProfileId = parser.get("dedupConfProfile");
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log.info("dedupConfigProfileId: {}", dedupConfigProfileId);
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final SparkConf conf = new SparkConf();
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// conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer");
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// conf.registerKryoClasses(BrokerConstants.getModelClasses());
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// TODO UNCOMMENT
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// final DedupConfig dedupConfig = loadDedupConfig(isLookupUrl, dedupConfigProfileId);
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final DedupConfig dedupConfig = null;
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runWithSparkSession(conf, isSparkSessionManaged, spark -> {
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removeOutputDir(spark, eventsPath);
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// TODO REMOVE THIS
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expandResultsWithRelations(spark, graphPath, Publication.class)
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.write()
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.mode(SaveMode.Overwrite)
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.json(eventsPath);
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// TODO UNCOMMENT THIS
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// spark
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// .emptyDataset(Encoders.bean(Event.class))
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// .union(generateEvents(spark, graphPath, Publication.class, dedupConfig))
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// .union(generateEvents(spark, graphPath, eu.dnetlib.dhp.schema.oaf.Dataset.class, dedupConfig))
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// .union(generateEvents(spark, graphPath, Software.class, dedupConfig))
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// .union(generateEvents(spark, graphPath, OtherResearchProduct.class, dedupConfig))
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// .write()
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// .mode(SaveMode.Overwrite)
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// .option("compression", "gzip")
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// .json(eventsPath);
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});
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}
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private static void removeOutputDir(final SparkSession spark, final String path) {
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HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
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}
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private static <SRC extends Result> Dataset<Event> generateEvents(
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final SparkSession spark,
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final String graphPath,
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final Class<SRC> sourceClass,
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final DedupConfig dedupConfig) {
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final Dataset<OpenaireBrokerResult> results = expandResultsWithRelations(spark, graphPath, sourceClass);
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final Dataset<Relation> mergedRels = readPath(spark, graphPath + "/relation", Relation.class)
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.filter(r -> r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS));
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final TypedColumn<Tuple2<OpenaireBrokerResult, Relation>, ResultGroup> aggr = new ResultAggregator()
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.toColumn();
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return results
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.joinWith(mergedRels, results.col("openaireId").equalTo(mergedRels.col("source")), "inner")
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.groupByKey(
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(MapFunction<Tuple2<OpenaireBrokerResult, Relation>, String>) t -> t._2.getTarget(), Encoders.STRING())
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.agg(aggr)
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.map((MapFunction<Tuple2<String, ResultGroup>, ResultGroup>) t -> t._2, Encoders.bean(ResultGroup.class))
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.filter(ResultGroup::isValid)
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.map(
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(MapFunction<ResultGroup, EventGroup>) g -> EventFinder.generateEvents(g, dedupConfig),
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Encoders.bean(EventGroup.class))
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.flatMap(group -> group.getData().iterator(), Encoders.bean(Event.class));
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}
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private static <SRC extends Result> Dataset<OpenaireBrokerResult> expandResultsWithRelations(
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final SparkSession spark,
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final String graphPath,
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final Class<SRC> sourceClass) {
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final Dataset<Project> projects = readPath(spark, graphPath + "/project", Project.class);
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final Dataset<eu.dnetlib.dhp.schema.oaf.Dataset> datasets = readPath(
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spark, graphPath + "/dataset", eu.dnetlib.dhp.schema.oaf.Dataset.class);
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final Dataset<Software> softwares = readPath(spark, graphPath + "/software", Software.class);
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final Dataset<Publication> publications = readPath(spark, graphPath + "/publication", Publication.class);
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final Dataset<Relation> rels = readPath(spark, graphPath + "/relation", Relation.class)
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.filter(r -> !r.getRelClass().equals(BrokerConstants.IS_MERGED_IN_CLASS))
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.cache();
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final Dataset<OpenaireBrokerResult> r0 = readPath(
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spark, graphPath + "/" + sourceClass.getSimpleName().toLowerCase(), sourceClass)
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.filter(r -> r.getDataInfo().getDeletedbyinference())
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.map(ConversionUtils::oafResultToBrokerResult, Encoders.bean(OpenaireBrokerResult.class));
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// TODO UNCOMMENT THIS
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// final Dataset<OpenaireBrokerResult> r1 = join(r0, rels, relatedEntities(projects, rels,
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// RelatedProject.class));
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// final Dataset<OpenaireBrokerResult> r2 = join(r1, rels, relatedEntities(softwares, rels,
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// RelatedSoftware.class));
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// final Dataset<OpenaireBrokerResult> r3 = join(r2, rels, relatedEntities(datasets, rels,
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// RelatedDataset.class));
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// final Dataset<OpenaireBrokerResult> r4 = join(r3, rels, relatedEntities(publications, rels,
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// RelatedPublication.class));;
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return r0; // TODO it should be r4
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}
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private static <T, RT> Dataset<RT> relatedEntities(final Dataset<T> targets,
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final Dataset<Relation> rels,
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final Class<RT> clazz) {
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return rels
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.joinWith(targets, targets.col("id").equalTo(rels.col("target")), "inner")
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.map(
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t -> RelatedEntityFactory.newRelatedEntity(t._1.getSource(), t._1.getRelType(), t._2, clazz),
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Encoders.bean(clazz));
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}
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private static <T> Dataset<OpenaireBrokerResult> join(final Dataset<OpenaireBrokerResult> sources,
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final Dataset<Relation> rels,
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final Dataset<T> typedRels) {
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final TypedColumn<Tuple2<OpenaireBrokerResult, T>, OpenaireBrokerResult> aggr = new OpenaireBrokerResultAggregator<T>()
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.toColumn();
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;
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return sources
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.joinWith(typedRels, sources.col("openaireId").equalTo(rels.col("source")), "left_outer")
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.groupByKey(
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(MapFunction<Tuple2<OpenaireBrokerResult, T>, String>) t -> t._1.getOpenaireId(), Encoders.STRING())
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.agg(aggr)
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.map(t -> t._2, Encoders.bean(OpenaireBrokerResult.class));
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}
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public static <R> Dataset<R> readPath(
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final SparkSession spark,
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final String inputPath,
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final Class<R> clazz) {
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return spark
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.read()
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.textFile(inputPath)
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.map((MapFunction<String, R>) value -> OBJECT_MAPPER.readValue(value, clazz), Encoders.bean(clazz));
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}
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private static DedupConfig loadDedupConfig(final String isLookupUrl, final String profId) throws Exception {
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final ISLookUpService isLookUpService = ISLookupClientFactory.getLookUpService(isLookupUrl);
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final String conf = isLookUpService
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.getResourceProfileByQuery(
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String
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.format(
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"for $x in /RESOURCE_PROFILE[.//RESOURCE_IDENTIFIER/@value = '%s'] return $x//DEDUPLICATION/text()",
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profId));
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final DedupConfig dedupConfig = new ObjectMapper().readValue(conf, DedupConfig.class);
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dedupConfig.getPace().initModel();
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dedupConfig.getPace().initTranslationMap();
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// dedupConfig.getWf().setConfigurationId("???");
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return dedupConfig;
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}
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}
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