| /* |
| * 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.druid.java.util.common.io.smoosh; |
| |
| import com.google.common.io.Files; |
| import com.google.common.primitives.Ints; |
| import junit.framework.Assert; |
| import org.apache.druid.java.util.common.BufferUtils; |
| import org.apache.druid.java.util.common.ISE; |
| import org.apache.druid.java.util.common.StringUtils; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| |
| /** |
| */ |
| public class SmooshedFileMapperTest |
| { |
| @Rule |
| public TemporaryFolder folder = new TemporaryFolder(); |
| |
| @Test |
| public void testSanity() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| for (int i = 0; i < 20; ++i) { |
| File tmpFile = folder.newFile(StringUtils.format("smoosh-%s.bin", i)); |
| Files.write(Ints.toByteArray(i), tmpFile); |
| smoosher.add(StringUtils.format("%d", i), tmpFile); |
| } |
| } |
| validateOutput(baseDir); |
| } |
| |
| @Test |
| public void testWhenFirstWriterClosedInTheMiddle() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| final SmooshedWriter writer = smoosher.addWithSmooshedWriter(StringUtils.format("%d", 19), 4); |
| |
| for (int i = 0; i < 19; ++i) { |
| File tmpFile = File.createTempFile(StringUtils.format("smoosh-%s", i), ".bin"); |
| Files.write(Ints.toByteArray(i), tmpFile); |
| smoosher.add(StringUtils.format("%d", i), tmpFile); |
| if (i == 10) { |
| writer.write(ByteBuffer.wrap(Ints.toByteArray(19))); |
| writer.close(); |
| } |
| tmpFile.delete(); |
| } |
| } |
| validateOutput(baseDir); |
| } |
| |
| @Test(expected = ISE.class) |
| public void testExceptionForUnClosedFiles() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| for (int i = 0; i < 19; ++i) { |
| final SmooshedWriter writer = smoosher.addWithSmooshedWriter(StringUtils.format("%d", i), 4); |
| writer.write(ByteBuffer.wrap(Ints.toByteArray(i))); |
| } |
| } |
| } |
| |
| @Test |
| public void testWhenFirstWriterClosedAtTheEnd() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| final SmooshedWriter writer = smoosher.addWithSmooshedWriter(StringUtils.format("%d", 19), 4); |
| writer.write(ByteBuffer.wrap(Ints.toByteArray(19))); |
| |
| for (int i = 0; i < 19; ++i) { |
| File tmpFile = File.createTempFile(StringUtils.format("smoosh-%s", i), ".bin"); |
| Files.write(Ints.toByteArray(i), tmpFile); |
| smoosher.add(StringUtils.format("%d", i), tmpFile); |
| tmpFile.delete(); |
| } |
| writer.close(); |
| } |
| validateOutput(baseDir); |
| } |
| |
| @Test |
| public void testBehaviorWhenReportedSizesLargeAndExceptionIgnored() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| for (int i = 0; i < 20; ++i) { |
| final SmooshedWriter writer = smoosher.addWithSmooshedWriter(StringUtils.format("%d", i), 7); |
| writer.write(ByteBuffer.wrap(Ints.toByteArray(i))); |
| try { |
| writer.close(); |
| Assert.fail("IOException expected"); |
| } |
| catch (IOException ignored) { |
| // expected |
| } |
| } |
| } |
| |
| File[] files = baseDir.listFiles(); |
| Assert.assertNotNull(files); |
| Arrays.sort(files); |
| |
| Assert.assertEquals(6, files.length); // 4 smoosh files and 1 meta file |
| for (int i = 0; i < 4; ++i) { |
| Assert.assertEquals(FileSmoosher.makeChunkFile(baseDir, i), files[i]); |
| } |
| Assert.assertEquals(FileSmoosher.metaFile(baseDir), files[files.length - 1]); |
| |
| try (SmooshedFileMapper mapper = SmooshedFileMapper.load(baseDir)) { |
| for (int i = 0; i < 20; ++i) { |
| ByteBuffer buf = mapper.mapFile(StringUtils.format("%d", i)); |
| Assert.assertEquals(0, buf.position()); |
| Assert.assertEquals(4, buf.remaining()); |
| Assert.assertEquals(4, buf.capacity()); |
| Assert.assertEquals(i, buf.getInt()); |
| } |
| } |
| } |
| |
| @Test |
| public void testBehaviorWhenReportedSizesSmall() throws Exception |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir, 21)) { |
| boolean exceptionThrown = false; |
| try (final SmooshedWriter writer = smoosher.addWithSmooshedWriter("1", 2)) { |
| writer.write(ByteBuffer.wrap(Ints.toByteArray(1))); |
| } |
| catch (ISE e) { |
| Assert.assertTrue(e.getMessage().contains("Liar!!!")); |
| exceptionThrown = true; |
| } |
| |
| Assert.assertTrue(exceptionThrown); |
| File[] files = baseDir.listFiles(); |
| Assert.assertNotNull(files); |
| Assert.assertEquals(1, files.length); |
| } |
| } |
| |
| @Test |
| public void testDeterministicFileUnmapping() throws IOException |
| { |
| File baseDir = folder.newFolder("base"); |
| |
| long totalMemoryUsedBeforeAddingFile = BufferUtils.totalMemoryUsedByDirectAndMappedBuffers(); |
| try (FileSmoosher smoosher = new FileSmoosher(baseDir)) { |
| File dataFile = folder.newFile("data.bin"); |
| try (RandomAccessFile raf = new RandomAccessFile(dataFile, "rw")) { |
| raf.setLength(1 << 20); // 1 MiB |
| } |
| smoosher.add(dataFile); |
| } |
| long totalMemoryUsedAfterAddingFile = BufferUtils.totalMemoryUsedByDirectAndMappedBuffers(); |
| // Assert no hanging file mappings left by either smoosher or smoosher.add(file) |
| Assert.assertEquals(totalMemoryUsedBeforeAddingFile, totalMemoryUsedAfterAddingFile); |
| } |
| |
| private void validateOutput(File baseDir) throws IOException |
| { |
| File[] files = baseDir.listFiles(); |
| Arrays.sort(files); |
| |
| Assert.assertEquals(5, files.length); // 4 smooshed files and 1 meta file |
| for (int i = 0; i < 4; ++i) { |
| Assert.assertEquals(FileSmoosher.makeChunkFile(baseDir, i), files[i]); |
| } |
| Assert.assertEquals(FileSmoosher.metaFile(baseDir), files[files.length - 1]); |
| |
| try (SmooshedFileMapper mapper = SmooshedFileMapper.load(baseDir)) { |
| for (int i = 0; i < 20; ++i) { |
| ByteBuffer buf = mapper.mapFile(StringUtils.format("%d", i)); |
| Assert.assertEquals(0, buf.position()); |
| Assert.assertEquals(4, buf.remaining()); |
| Assert.assertEquals(4, buf.capacity()); |
| Assert.assertEquals(i, buf.getInt()); |
| } |
| } |
| } |
| } |