forked from D-Net/dnet-hadoop
69 lines
2.2 KiB
Java
69 lines
2.2 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.sql.Dataset;
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import org.apache.spark.sql.Encoders;
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import org.apache.spark.util.LongAccumulator;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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import eu.dnetlib.dhp.broker.oa.util.ClusterUtils;
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import eu.dnetlib.dhp.broker.oa.util.aggregators.withRels.SimpleDatasourceInfo;
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import eu.dnetlib.dhp.schema.oaf.Datasource;
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public class PrepareRelatedDatasourcesJob {
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private static final Logger log = LoggerFactory.getLogger(PrepareRelatedDatasourcesJob.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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PrepareRelatedDatasourcesJob.class
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.getResourceAsStream("/eu/dnetlib/dhp/broker/oa/common_params.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 workingPath = parser.get("workingPath");
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log.info("workingPath: {}", workingPath);
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final String relsPath = workingPath + "/datasources";
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log.info("relsPath: {}", relsPath);
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final SparkConf conf = new SparkConf();
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runWithSparkSession(conf, isSparkSessionManaged, spark -> {
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ClusterUtils.removeDir(spark, relsPath);
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final LongAccumulator total = spark.sparkContext().longAccumulator("total_datasources");
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final Dataset<SimpleDatasourceInfo> dataset = ClusterUtils
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.readPath(spark, graphPath + "/datasource", Datasource.class)
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.map(
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ds -> new SimpleDatasourceInfo(ds.getId(), ds.getDatasourcetype().getClassid()),
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Encoders.bean(SimpleDatasourceInfo.class));
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ClusterUtils.save(dataset, relsPath, SimpleDatasourceInfo.class, total);
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});
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}
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}
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