| /* |
| * 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; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.RandomAccessFile; |
| |
| import org.apache.logging.log4j.core.util.NullOutputStream; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| import static org.junit.Assert.*; |
| |
| /** |
| * Tests the RandomAccessFileManager class. |
| */ |
| public class RandomAccessFileManagerTest { |
| |
| @ClassRule |
| public static TemporaryFolder folder = new TemporaryFolder(); |
| |
| /** |
| * Test method for |
| * {@link org.apache.logging.log4j.core.appender.RandomAccessFileManager#writeBytes(byte[], int, int)} |
| * . |
| */ |
| @Test |
| public void testWrite_multiplesOfBufferSize() throws IOException { |
| final File file = folder.newFile(); |
| try (final RandomAccessFile raf = new RandomAccessFile(file, "rw")) { |
| final OutputStream os = NullOutputStream.getInstance(); |
| final RandomAccessFileManager manager = new RandomAccessFileManager(null, raf, file.getName(), |
| os, RandomAccessFileManager.DEFAULT_BUFFER_SIZE, null, null, true); |
| |
| final int size = RandomAccessFileManager.DEFAULT_BUFFER_SIZE * 3; |
| final byte[] data = new byte[size]; |
| manager.write(data); // no buffer overflow exception |
| |
| // all data is written if exceeds buffer size |
| assertEquals(RandomAccessFileManager.DEFAULT_BUFFER_SIZE * 3, raf.length()); |
| }} |
| |
| /** |
| * Test method for |
| * {@link org.apache.logging.log4j.core.appender.RandomAccessFileManager#writeBytes(byte[], int, int)} |
| * . |
| */ |
| @Test |
| public void testWrite_dataExceedingBufferSize() throws IOException { |
| final File file = folder.newFile(); |
| try (final RandomAccessFile raf = new RandomAccessFile(file, "rw")) { |
| final OutputStream os = NullOutputStream.getInstance(); |
| final RandomAccessFileManager manager = new RandomAccessFileManager(null, raf, file.getName(), |
| os, RandomAccessFileManager.DEFAULT_BUFFER_SIZE, null, null, true); |
| |
| final int size = RandomAccessFileManager.DEFAULT_BUFFER_SIZE * 3 + 1; |
| final byte[] data = new byte[size]; |
| manager.write(data); // no exception |
| // all data is written if exceeds buffer size |
| assertEquals(RandomAccessFileManager.DEFAULT_BUFFER_SIZE * 3 + 1, raf.length()); |
| |
| manager.flush(); |
| assertEquals(size, raf.length()); // all data written to file now |
| }} |
| |
| @Test |
| public void testConfigurableBufferSize() throws IOException { |
| final File file = folder.newFile(); |
| try (final RandomAccessFile raf = new RandomAccessFile(file, "rw")) { |
| final OutputStream os = NullOutputStream.getInstance(); |
| final int bufferSize = 4 * 1024; |
| assertNotEquals(bufferSize, RandomAccessFileManager.DEFAULT_BUFFER_SIZE); |
| |
| final RandomAccessFileManager manager = new RandomAccessFileManager(null, raf, file.getName(), |
| os, bufferSize, null, null, true); |
| |
| // check the resulting buffer size is what was requested |
| assertEquals(bufferSize, manager.getBufferSize()); |
| }} |
| |
| @Test |
| public void testWrite_dataExceedingMinBufferSize() throws IOException { |
| final File file = folder.newFile(); |
| try (final RandomAccessFile raf = new RandomAccessFile(file, "rw")) { |
| final OutputStream os = NullOutputStream.getInstance(); |
| final int bufferSize = 1; |
| final RandomAccessFileManager manager = new RandomAccessFileManager(null, raf, file.getName(), |
| os, bufferSize, null, null, true); |
| |
| final int size = bufferSize * 3 + 1; |
| final byte[] data = new byte[size]; |
| manager.write(data); // no exception |
| // all data is written if exceeds buffer size |
| assertEquals(bufferSize * 3 + 1, raf.length()); |
| |
| manager.flush(); |
| assertEquals(size, raf.length()); // all data written to file now |
| }} |
| |
| @Test |
| public void testAppendDoesNotOverwriteExistingFile() throws IOException { |
| final boolean isAppend = true; |
| final File file = folder.newFile(); |
| assertEquals(0, file.length()); |
| |
| final byte[] bytes = new byte[4 * 1024]; |
| |
| // create existing file |
| try (FileOutputStream fos = new FileOutputStream(file)) { |
| fos.write(bytes, 0, bytes.length); |
| fos.flush(); |
| } |
| assertEquals("all flushed to disk", bytes.length, file.length()); |
| |
| final RandomAccessFileManager manager = RandomAccessFileManager.getFileManager( |
| file.getAbsolutePath(), isAppend, true, RandomAccessFileManager.DEFAULT_BUFFER_SIZE, null, null, null); |
| manager.write(bytes, 0, bytes.length, true); |
| final int expected = bytes.length * 2; |
| assertEquals("appended, not overwritten", expected, file.length()); |
| } |
| } |