itsvikramagr commented on a change in pull request #24922: [SPARK-28120][SS] Rocksdb state storage implementation URL: https://github.com/apache/spark/pull/24922#discussion_r316973999
########## File path: core/src/main/java/org/apache/spark/io/FileUtility.java ########## @@ -0,0 +1,112 @@ +/* + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.spark.io; + +import org.apache.commons.compress.archivers.tar.TarArchiveEntry; +import org.apache.commons.compress.archivers.tar.TarArchiveInputStream; +import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream; +import org.apache.commons.compress.utils.IOUtils; + +import java.io.*; + +public class FileUtility { + + /** + * Extract an input tar file into an output files and directories. + * inputTarFileLoc: the input file location for the tar file + * destDirLoc: destination for the extracted files + * + * throws IllegalStateException + */ + public static final String ENCODING = "utf-8"; + + public static void extractTarFile(String inputTarFileLoc, String destDirLoc) + throws IllegalStateException { + File inputFile = new File(inputTarFileLoc); + if (!inputTarFileLoc.endsWith(".tar")) { + throw new IllegalStateException(String.format( + "Input File[%s] should end with tar extension.", inputTarFileLoc)); + } + File destDir = new File(destDirLoc); + if (destDir.exists() && !destDir.delete()) { + throw new IllegalStateException(String.format( + "Couldn't delete the existing destination directory[%s] ", destDirLoc)); + } else if (!destDir.mkdir()) { + throw new IllegalStateException(String.format( + "Couldn't create directory %s ", destDirLoc)); + } + + try (InputStream is = new FileInputStream(inputFile); + TarArchiveInputStream debInputStream = new TarArchiveInputStream(is, ENCODING)) { + TarArchiveEntry entry; + while ((entry = (TarArchiveEntry) debInputStream.getNextEntry()) != null) { + final File outputFile = new File(destDirLoc, entry.getName()); + if (entry.isDirectory()) { + if (!outputFile.exists() && !outputFile.mkdirs()) { + throw new IllegalStateException(String.format( + "Couldn't create directory %s.", outputFile.getAbsolutePath())); + } + } else { + try (OutputStream outputFileStream = new FileOutputStream(outputFile)) { + IOUtils.copy(debInputStream, outputFileStream); + } + } + } + } catch (IOException e){ + throw new IllegalStateException(String.format( + "extractTarFile failed with exception %s.", e.getMessage())); + } + } + + /** + * create a tar file for input source directory location . + * source: the source directory location + * destFileLoc: destination of the created tarball + * + * throws IllegalStateException + */ + + public static void createTarFile(String source, String destFileLoc) + throws IllegalStateException { + File f = new File(destFileLoc); + if (f.exists() && !f.delete()) { + throw new IllegalStateException(String.format( + "Couldn't delete the destination file location[%s]", destFileLoc)); + } + File folder = new File(source); + if (!folder.exists()) { + throw new IllegalStateException(String.format( + "Source folder[%s] does not exist", source)); + } + + try (FileOutputStream fos = new FileOutputStream(destFileLoc); + TarArchiveOutputStream tarOs = new TarArchiveOutputStream(fos, ENCODING)) { + File[] fileNames = folder.listFiles(); + for (File file : fileNames) { + TarArchiveEntry tar_file = new TarArchiveEntry(file.getName()); + tar_file.setSize(file.length()); + tarOs.putArchiveEntry(tar_file); + try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file))) { + IOUtils.copy(bis, tarOs); + tarOs.closeArchiveEntry(); + } + } + tarOs.finish(); + } catch (IOException e) { + throw new IllegalStateException(String.format( + "createTarFile failed with exception %s.", e.getMessage())); Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
