111 lines
3.3 KiB
Java
111 lines
3.3 KiB
Java
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package eu.dnetlib.dhp.oa.graph.hostedbymap;
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import static eu.dnetlib.dhp.common.collection.DecompressTarGz.doExtract;
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import java.io.BufferedOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.PrintWriter;
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import java.util.Arrays;
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import java.util.Objects;
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import java.util.stream.Stream;
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import java.util.zip.GZIPOutputStream;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import eu.dnetlib.dhp.oa.graph.hostedbymap.model.DOAJModel;
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import eu.dnetlib.dhp.oa.graph.hostedbymap.model.doaj.DOAJEntry;
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import org.apache.commons.io.IOUtils;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.*;
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import org.jetbrains.annotations.NotNull;
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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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public class ExtractAndMapDoajJson {
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private static final Logger log = LoggerFactory.getLogger(ExtractAndMapDoajJson.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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Objects
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.requireNonNull(
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ExtractAndMapDoajJson.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/oa/graph/hostedbymap/download_json_parameters.json"))));
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parser.parseArgument(args);
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final String compressedInput = parser.get("compressedFile");
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log.info("compressedInput {}", compressedInput);
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final String hdfsNameNode = parser.get("hdfsNameNode");
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log.info("hdfsNameNode {}", hdfsNameNode);
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final String outputPath = parser.get("outputPath");
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log.info("outputPath {}", outputPath);
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final String workingPath = parser.get("workingPath");
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log.info("workingPath {}", workingPath);
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Configuration conf = new Configuration();
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conf.set("fs.defaultFS", hdfsNameNode);
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FileSystem fs = FileSystem.get(conf);
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doExtract(fs, workingPath, compressedInput);
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doMap(fs, workingPath, outputPath);
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}
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private static void doMap(FileSystem fs, String workingPath, String outputPath) throws IOException {
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RemoteIterator<LocatedFileStatus> fileStatusListIterator = fs.listFiles(
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new Path(workingPath), true);
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Path hdfsWritePath = new Path(outputPath.concat(outputPath));
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if (fs.exists(hdfsWritePath)) {
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fs.delete(hdfsWritePath, true);
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}
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try (
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FSDataOutputStream out = fs
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.create(hdfsWritePath);
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PrintWriter writer = new PrintWriter(new BufferedOutputStream(out))) {
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while(fileStatusListIterator.hasNext()){
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FSDataInputStream is = fs.open(fileStatusListIterator.next().getPath());
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DOAJEntry[] doajEntries = new ObjectMapper().readValue((InputStream)is, DOAJEntry[].class);
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Arrays.stream(doajEntries).forEach(doaj -> {
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try {
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writer.println(new ObjectMapper().writeValueAsString(getDoajModel(doaj)));
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} catch (JsonProcessingException e) {
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e.printStackTrace();
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}
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});
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}
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}
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}
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@NotNull
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public static DOAJModel getDoajModel(DOAJEntry doaj) {
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DOAJModel doajModel = new DOAJModel();
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doajModel.setOaStart(doaj.getBibjson().getOa_start());
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doajModel.setEissn(doaj.getBibjson().getEissn());
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doajModel.setIssn(doaj.getBibjson().getPissn());
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doajModel.setJournalTitle(doaj.getBibjson().getTitle());
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doajModel.setReviewProcess(doaj.getBibjson().getEditorial().getReview_process());
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return doajModel;
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}
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}
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