88 lines
2.8 KiB
Java
88 lines
2.8 KiB
Java
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package eu.dnetlib.dhp.oa.graph.fuse;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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import eu.dnetlib.dhp.common.HdfsSupport;
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import eu.dnetlib.dhp.oa.graph.raw.MigrateMongoMdstoresApplication;
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import eu.dnetlib.dhp.schema.common.ModelSupport;
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import eu.dnetlib.dhp.schema.oaf.Oaf;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.spark.SparkConf;
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import org.apache.spark.api.java.function.FilterFunction;
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import org.apache.spark.api.java.function.MapFunction;
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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.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Optional;
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import static eu.dnetlib.dhp.common.SparkSessionSupport.runWithSparkSession;
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public class DispatchEntitiesSparkJob {
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private static final Logger log = LoggerFactory.getLogger(DispatchEntitiesSparkJob.class);
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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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MigrateMongoMdstoresApplication.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/oa/graph/dispatch_entities_bytype_parameters.json")));
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parser.parseArgument(args);
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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 sourcePath = parser.get("sourcePath");
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final String targetPath = parser.get("graphRawPath");
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SparkConf conf = new SparkConf();
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runWithSparkSession(
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conf,
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isSparkSessionManaged,
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spark -> {
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removeOutputDir(spark, targetPath);
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ModelSupport.oafTypes
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.values()
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.forEach(clazz -> processEntity(spark, clazz, sourcePath, targetPath));
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});
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}
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private static <T extends Oaf> void processEntity(
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final SparkSession spark,
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final Class<T> clazz,
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final String sourcePath,
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final String targetPath) {
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final String type = clazz.getSimpleName().toLowerCase();
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log.info("Processing entities ({}) in file: {}", type, sourcePath);
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spark
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.read()
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.textFile(sourcePath)
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.filter((FilterFunction<String>) value -> isEntityType(value, type))
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.map(
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(MapFunction<String, String>) l -> StringUtils.substringAfter(l, "|"),
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Encoders.STRING())
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.write()
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.option("compression", "gzip")
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.mode(SaveMode.Overwrite)
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.text(targetPath + "/" + type);
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}
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private static boolean isEntityType(final String line, final String type) {
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return StringUtils.substringBefore(line, "|").equalsIgnoreCase(type);
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}
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private static void removeOutputDir(SparkSession spark, String path) {
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HdfsSupport.remove(path, spark.sparkContext().hadoopConfiguration());
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}
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}
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