112 lines
3.2 KiB
Java
112 lines
3.2 KiB
Java
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package eu.dnetlib.dhp.export.zenodo;
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import java.io.*;
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import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
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import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
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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.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 MakeTar implements Serializable {
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private static final Logger log = LoggerFactory.getLogger(MakeTar.class);
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public static void main(String[] args) throws Exception {
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String jsonConfiguration = IOUtils
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.toString(
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MakeTar.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/export/input_maketar_parameters.json"));
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(jsonConfiguration);
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parser.parseArgument(args);
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final String outputPath = parser.get("targetPath");
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log.info("hdfsPath: {}", outputPath);
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final String hdfsNameNode = parser.get("nameNode");
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log.info("nameNode: {}", hdfsNameNode);
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final String inputPath = parser.get("sourcePath");
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log.info("input path : {}", inputPath);
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Configuration conf = new Configuration();
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conf.set("fs.defaultFS", hdfsNameNode);
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FileSystem fileSystem = FileSystem.get(conf);
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makeTArArchive(fileSystem, inputPath, outputPath);
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}
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public static void makeTArArchive(FileSystem fileSystem, String inputPath, String outputPath) throws IOException {
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RemoteIterator<LocatedFileStatus> dir_iterator = fileSystem.listLocatedStatus(new Path(inputPath));
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while (dir_iterator.hasNext()) {
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LocatedFileStatus fileStatus = dir_iterator.next();
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Path p = fileStatus.getPath();
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String p_string = p.toString();
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String entity = p_string.substring(p_string.lastIndexOf("/") + 1);
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write(fileSystem, p_string, outputPath + "/" + entity + ".tar", entity);
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}
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}
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private static void write(FileSystem fileSystem, String inputPath, String outputPath, String dir_name)
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throws IOException {
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Path hdfsWritePath = new Path(outputPath);
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FSDataOutputStream fsDataOutputStream = null;
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if (fileSystem.exists(hdfsWritePath)) {
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fileSystem.delete(hdfsWritePath, true);
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}
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fsDataOutputStream = fileSystem.create(hdfsWritePath);
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TarArchiveOutputStream ar = new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream());
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RemoteIterator<LocatedFileStatus> fileStatusListIterator = fileSystem
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.listFiles(
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new Path(inputPath), true);
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while (fileStatusListIterator.hasNext()) {
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LocatedFileStatus fileStatus = fileStatusListIterator.next();
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Path p = fileStatus.getPath();
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String p_string = p.toString();
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if (!p_string.endsWith("_SUCCESS")) {
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String name = p_string.substring(p_string.lastIndexOf("/") + 1);
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TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name + ".json.gz");
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entry.setSize(fileStatus.getLen());
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ar.putArchiveEntry(entry);
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InputStream is = fileSystem.open(fileStatus.getPath());
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BufferedInputStream bis = new BufferedInputStream(is);
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int count;
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byte data[] = new byte[1024];
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while ((count = bis.read(data, 0, data.length)) != -1) {
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ar.write(data, 0, count);
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}
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bis.close();
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ar.closeArchiveEntry();
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}
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}
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ar.close();
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}
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}
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