| /* |
| * 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.logging.log4j.core.appender.rolling.action; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.Objects; |
| import java.util.zip.GZIPOutputStream; |
| |
| /** |
| * Compresses a file using GZ compression. |
| */ |
| public final class GzCompressAction extends AbstractAction { |
| |
| private static final int BUF_SIZE = 8192; |
| |
| /** |
| * Source file. |
| */ |
| private final File source; |
| |
| /** |
| * Destination file. |
| */ |
| private final File destination; |
| |
| /** |
| * If true, attempt to delete file on completion. |
| */ |
| private final boolean deleteSource; |
| |
| /** |
| * Create new instance of GzCompressAction. |
| * |
| * @param source file to compress, may not be null. |
| * @param destination compressed file, may not be null. |
| * @param deleteSource if true, attempt to delete file on completion. Failure to delete |
| * does not cause an exception to be thrown or affect return value. |
| */ |
| public GzCompressAction(final File source, final File destination, final boolean deleteSource) { |
| Objects.requireNonNull(source, "source"); |
| Objects.requireNonNull(destination, "destination"); |
| |
| this.source = source; |
| this.destination = destination; |
| this.deleteSource = deleteSource; |
| } |
| |
| /** |
| * Compress. |
| * |
| * @return true if successfully compressed. |
| * @throws IOException on IO exception. |
| */ |
| @Override |
| public boolean execute() throws IOException { |
| return execute(source, destination, deleteSource); |
| } |
| |
| /** |
| * Compress a file. |
| * |
| * @param source file to compress, may not be null. |
| * @param destination compressed file, may not be null. |
| * @param deleteSource if true, attempt to delete file on completion. Failure to delete |
| * does not cause an exception to be thrown or affect return value. |
| * @return true if source file compressed. |
| * @throws IOException on IO exception. |
| */ |
| public static boolean execute(final File source, final File destination, final boolean deleteSource) |
| throws IOException { |
| if (source.exists()) { |
| try (final FileInputStream fis = new FileInputStream(source); |
| final BufferedOutputStream os = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream( |
| destination)))) { |
| final byte[] inbuf = new byte[BUF_SIZE]; |
| int n; |
| |
| while ((n = fis.read(inbuf)) != -1) { |
| os.write(inbuf, 0, n); |
| } |
| } |
| |
| if (deleteSource && !source.delete()) { |
| LOGGER.warn("Unable to delete " + source.toString() + '.'); |
| } |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| |
| /** |
| * Capture exception. |
| * |
| * @param ex exception. |
| */ |
| @Override |
| protected void reportException(final Exception ex) { |
| LOGGER.warn("Exception during compression of '" + source.toString() + "'.", ex); |
| } |
| |
| @Override |
| public String toString() { |
| return GzCompressAction.class.getSimpleName() + '[' + source + " to " + destination |
| + ", deleteSource=" + deleteSource + ']'; |
| } |
| |
| public File getSource() { |
| return source; |
| } |
| |
| public File getDestination() { |
| return destination; |
| } |
| |
| public boolean isDeleteSource() { |
| return deleteSource; |
| } |
| } |