| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.heron.apiserver.utils; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.StandardCopyOption; |
| import java.nio.file.attribute.BasicFileAttributes; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.commons.compress.archivers.tar.TarArchiveEntry; |
| import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream; |
| import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream; |
| |
| public final class FileHelper { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FileHelper.class); |
| |
| public static boolean copy(InputStream in, Path to) { |
| try { |
| Files.copy(in, to, StandardCopyOption.REPLACE_EXISTING); |
| } catch (IOException ioe) { |
| LOG.error("Failed to copy file to {}", to, ioe); |
| return false; |
| } |
| return true; |
| } |
| |
| public static boolean copy(Path from, Path to) { |
| try { |
| Files.copy(from, to, StandardCopyOption.REPLACE_EXISTING); |
| } catch (IOException ioe) { |
| LOG.error("Failed to copy file from {} to {}", from, to, ioe); |
| return false; |
| } |
| return true; |
| } |
| |
| public static File[] getChildren(String path) { |
| final File file = new File(path); |
| return file.isDirectory() ? file.listFiles() : new File[] {}; |
| } |
| |
| public static boolean copyDirectory(Path from, Path to) { |
| try { |
| Files.walkFileTree(from, new CopyDirectoryVisitor(from, to)); |
| } catch (IOException ioe) { |
| LOG.error("Failed to copy directory from {} to {}", from, to, ioe); |
| return false; |
| } |
| return true; |
| } |
| |
| public static boolean createTarGz(File archive, File... files) { |
| try ( |
| FileOutputStream fileOutputStream = new FileOutputStream(archive); |
| BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream); |
| GzipCompressorOutputStream gzipOuputStream = |
| new GzipCompressorOutputStream(bufferedOutputStream); |
| TarArchiveOutputStream archiveOutputStream = new TarArchiveOutputStream(gzipOuputStream) |
| ) { |
| for (File file : files) { |
| addFileToArchive(archiveOutputStream, file, ""); |
| } |
| archiveOutputStream.finish(); |
| } catch (IOException ioe) { |
| LOG.error("Failed to create archive {} file.", archive, ioe); |
| return false; |
| } |
| return true; |
| } |
| |
| private static void addFileToArchive(TarArchiveOutputStream archiveOutputStream, File file, |
| String base) throws IOException { |
| final File absoluteFile = file.getAbsoluteFile(); |
| final String entryName = base + file.getName(); |
| final TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file, entryName); |
| archiveOutputStream.putArchiveEntry(tarArchiveEntry); |
| |
| if (absoluteFile.isFile()) { |
| Files.copy(file.toPath(), archiveOutputStream); |
| archiveOutputStream.closeArchiveEntry(); |
| } else { |
| archiveOutputStream.closeArchiveEntry(); |
| if (absoluteFile.listFiles() != null) { |
| for (File f : absoluteFile.listFiles()) { |
| addFileToArchive(archiveOutputStream, f, entryName + "/"); |
| } |
| } |
| } |
| } |
| |
| // save uploaded file to new location |
| public static void writeToFile(InputStream uploadedInputStream, |
| String uploadedFileLocation) throws IOException { |
| File file = new File(uploadedFileLocation); |
| file.getParentFile().mkdirs(); |
| |
| int read = 0; |
| byte[] bytes = new byte[1024]; |
| |
| try (OutputStream out = new FileOutputStream(file)) { |
| while ((read = uploadedInputStream.read(bytes)) != -1) { |
| out.write(bytes, 0, read); |
| } |
| out.flush(); |
| } |
| } |
| |
| private static final class CopyDirectoryVisitor extends SimpleFileVisitor<Path> { |
| private final Path fromPath; |
| private final Path toPath; |
| private final StandardCopyOption copyOption = StandardCopyOption.REPLACE_EXISTING; |
| |
| private CopyDirectoryVisitor(Path from, Path to) { |
| fromPath = from; |
| toPath = to; |
| } |
| |
| @Override |
| public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) |
| throws IOException { |
| Path targetPath = toPath.resolve(fromPath.relativize(dir)); |
| if (!Files.exists(targetPath)) { |
| Files.createDirectory(targetPath); |
| } |
| return FileVisitResult.CONTINUE; |
| } |
| |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { |
| Files.copy(file, toPath.resolve(fromPath.relativize(file)), copyOption); |
| return FileVisitResult.CONTINUE; |
| } |
| } |
| |
| private FileHelper() { |
| } |
| } |