package eu.dnetlib.dhp.common; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.io.Serializable; import org.apache.commons.compress.archivers.tar.TarArchiveEntry; import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream; import org.apache.hadoop.fs.*; public class MakeTarArchive implements Serializable { private static TarArchiveOutputStream getTar(FileSystem fileSystem, String outputPath) throws IOException { Path hdfsWritePath = new Path(outputPath); FSDataOutputStream fsDataOutputStream = null; if (fileSystem.exists(hdfsWritePath)) { fileSystem.delete(hdfsWritePath, true); } fsDataOutputStream = fileSystem.create(hdfsWritePath); return new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream()); } private static void write(FileSystem fileSystem, String inputPath, String outputPath, String dir_name) throws IOException { Path hdfsWritePath = new Path(outputPath); FSDataOutputStream fsDataOutputStream = null; if (fileSystem.exists(hdfsWritePath)) { fileSystem.delete(hdfsWritePath, true); } fsDataOutputStream = fileSystem.create(hdfsWritePath); TarArchiveOutputStream ar = new TarArchiveOutputStream(fsDataOutputStream.getWrappedStream()); RemoteIterator fileStatusListIterator = fileSystem .listFiles( new Path(inputPath), true); while (fileStatusListIterator.hasNext()) { writeCurrentFile(fileSystem, dir_name, fileStatusListIterator, ar, 0); } ar.close(); } public static void tarMaxSize(FileSystem fileSystem, String inputPath, String outputPath, String dir_name, int gBperSplit) throws IOException { final long bytesPerSplit = 1024L * 1024L * 1024L * gBperSplit; long sourceSize = fileSystem.getContentSummary(new Path(inputPath)).getSpaceConsumed(); if (sourceSize < bytesPerSplit) { write(fileSystem, inputPath, outputPath + ".tar", dir_name); } else { int partNum = 0; RemoteIterator fileStatusListIterator = fileSystem .listFiles( new Path(inputPath), true); boolean next = fileStatusListIterator.hasNext(); while (next) { TarArchiveOutputStream ar = getTar(fileSystem, outputPath + "_" + (partNum + 1) + ".tar"); long current_size = 0; while (next && current_size < bytesPerSplit) { current_size = writeCurrentFile(fileSystem, dir_name, fileStatusListIterator, ar, current_size); next = fileStatusListIterator.hasNext(); } partNum += 1; ar.close(); } } } private static long writeCurrentFile(FileSystem fileSystem, String dir_name, RemoteIterator fileStatusListIterator, TarArchiveOutputStream ar, long current_size) throws IOException { LocatedFileStatus fileStatus = fileStatusListIterator.next(); Path p = fileStatus.getPath(); String p_string = p.toString(); if (!p_string.endsWith("_SUCCESS")) { String name = p_string.substring(p_string.lastIndexOf("/") + 1); TarArchiveEntry entry = new TarArchiveEntry(dir_name + "/" + name); entry.setSize(fileStatus.getLen()); current_size += fileStatus.getLen(); ar.putArchiveEntry(entry); InputStream is = fileSystem.open(fileStatus.getPath()); BufferedInputStream bis = new BufferedInputStream(is); int count; byte data[] = new byte[1024]; while ((count = bis.read(data, 0, data.length)) != -1) { ar.write(data, 0, count); } bis.close(); ar.closeArchiveEntry(); } return current_size; } }