95 lines
2.9 KiB
Java
95 lines
2.9 KiB
Java
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package eu.dnetlib.dhp.oa.graph.dump.graph;
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import java.io.*;
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import java.nio.charset.StandardCharsets;
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import org.apache.commons.compress.archivers.ar.ArArchiveEntry;
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import org.apache.commons.compress.archivers.ar.ArArchiveOutputStream;
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import org.apache.commons.crypto.utils.IoUtils;
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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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import eu.dnetlib.dhp.oa.graph.dump.APIClient;
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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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private final Configuration conf;
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private final ArArchiveOutputStream ar;
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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/oa/graph/dump_whole/input_maketar_parameter.json"));
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(jsonConfiguration);
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parser.parseArgument(args);
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final String hdfsPath = parser.get("hdfsPath");
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log.info("hdfsPath: {}", hdfsPath);
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final String hdfsNameNode = parser.get("hdfsNameNode");
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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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MakeTar mt = new MakeTar(hdfsPath, hdfsNameNode);
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mt.execute(inputPath);
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mt.close();
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}
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private void execute(String inputPath) throws IOException {
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FileSystem fileSystem = FileSystem.get(conf);
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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 tmp = p_string.substring(0, p_string.lastIndexOf("/"));
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String name = tmp.substring(tmp.lastIndexOf("/") + 1);
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ar.putArchiveEntry(new ArArchiveEntry(name, fileStatus.getLen()));
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InputStream is = fileSystem.open(fileStatus.getPath());
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ar.write(IOUtils.toByteArray(is));
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ar.closeArchiveEntry();
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}
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}
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}
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private void close() throws IOException {
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ar.close();
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}
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public MakeTar(String hdfsPath, String hdfsNameNode) throws IOException {
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this.conf = new Configuration();
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this.conf.set("fs.defaultFS", hdfsNameNode);
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FileSystem fileSystem = FileSystem.get(this.conf);
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Path hdfsWritePath = new Path(hdfsPath);
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FSDataOutputStream fsDataOutputStream = null;
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if (fileSystem.exists(hdfsWritePath)) {
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fsDataOutputStream = fileSystem.append(hdfsWritePath);
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} else {
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fsDataOutputStream = fileSystem.create(hdfsWritePath);
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}
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this.ar = new ArArchiveOutputStream(fsDataOutputStream.getWrappedStream());
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}
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}
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