43 lines
1.5 KiB
Scala
43 lines
1.5 KiB
Scala
package eu.dnetlib.dhp.sx.graph
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import com.fasterxml.jackson.databind.ObjectMapper
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import eu.dnetlib.dhp.application.ArgumentApplicationParser
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import eu.dnetlib.dhp.schema.oaf.Result
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import org.apache.commons.io.IOUtils
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import org.apache.hadoop.io.compress.GzipCodec
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import org.apache.spark.SparkConf
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import org.apache.spark.sql.{Encoder, Encoders, SparkSession}
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import org.slf4j.{Logger, LoggerFactory}
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object SparkConvertDatasetToJsonRDD {
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def main(args: Array[String]): Unit = {
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val log: Logger = LoggerFactory.getLogger(getClass)
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val conf: SparkConf = new SparkConf()
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val parser = new ArgumentApplicationParser(IOUtils.toString(getClass.getResourceAsStream("/eu/dnetlib/dhp/sx/graph/convert_dataset_json_params.json")))
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parser.parseArgument(args)
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val spark: SparkSession =
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SparkSession
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.builder()
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.config(conf)
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.appName(getClass.getSimpleName)
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.master(parser.get("master")).getOrCreate()
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val sourcePath = parser.get("sourcePath")
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log.info(s"sourcePath -> $sourcePath")
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val targetPath = parser.get("targetPath")
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log.info(s"targetPath -> $targetPath")
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val resultObject = List("publication", "dataset", "software", "otherResearchProduct")
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val mapper = new ObjectMapper()
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implicit val oafEncoder: Encoder[Result] = Encoders.kryo(classOf[Result])
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resultObject.foreach { item =>
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spark.read.load(s"$sourcePath/$item").as[Result].map(r => mapper.writeValueAsString(r))(Encoders.STRING).rdd.saveAsTextFile(s"$targetPath/${item.toLowerCase}", classOf[GzipCodec])
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}
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}
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}
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