| /** |
| * 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.apex.malhar.lib.io.fs; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.Exchanger; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.junit.Assert; |
| import org.junit.ClassRule; |
| import org.junit.Ignore; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TestWatcher; |
| import org.junit.runner.Description; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.apex.malhar.lib.io.block.BlockMetadata; |
| import org.apache.apex.malhar.lib.testbench.CollectorTestSink; |
| import org.apache.apex.malhar.lib.util.TestUtils; |
| import org.apache.apex.malhar.lib.wal.FSWindowDataManager; |
| import org.apache.commons.io.FileUtils; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.hadoop.fs.FileContext; |
| import org.apache.hadoop.fs.Path; |
| |
| import com.google.common.collect.Sets; |
| |
| import com.datatorrent.api.Attribute; |
| import com.datatorrent.api.Context; |
| |
| import static org.apache.apex.malhar.lib.helper.OperatorContextTestHelper.mockOperatorContext; |
| |
| public class FileSplitterTest |
| { |
| |
| public static class TestClassMeta extends TestWatcher |
| { |
| @Override |
| protected void finished(Description description) |
| { |
| try { |
| FileContext.getLocalFSFileContext() |
| .delete(new Path(new File("target/" + description.getClassName()).getAbsolutePath()), true); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| public static class TestMeta extends TestWatcher |
| { |
| public String dataDirectory = null; |
| |
| FileSplitter fileSplitter; |
| CollectorTestSink<FileSplitter.FileMetadata> fileMetadataSink; |
| CollectorTestSink<BlockMetadata.FileBlockMetadata> blockMetadataSink; |
| Set<String> filePaths = Sets.newHashSet(); |
| Context.OperatorContext context; |
| |
| Exchanger<Integer> exchanger = new Exchanger<>(); |
| |
| @Override |
| protected void starting(org.junit.runner.Description description) |
| { |
| |
| String methodName = description.getMethodName(); |
| String className = description.getClassName(); |
| this.dataDirectory = "target/" + className + "/" + methodName; |
| |
| try { |
| FileContext.getLocalFSFileContext().delete(new Path(new File(dataDirectory).getAbsolutePath()), true); |
| HashSet<String> allLines = Sets.newHashSet(); |
| for (int file = 0; file < 12; file++) { |
| HashSet<String> lines = Sets.newHashSet(); |
| for (int line = 0; line < 2; line++) { |
| lines.add("f" + file + "l" + line); |
| } |
| allLines.addAll(lines); |
| File created = new File(this.dataDirectory, "file" + file + ".txt"); |
| filePaths.add(new Path(this.dataDirectory, created.getName()).toUri().toString()); |
| FileUtils.write(created, StringUtils.join(lines, '\n')); |
| } |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| |
| fileSplitter = new FileSplitter(); |
| fileSplitter.setScanner(new MockScanner(this)); |
| fileSplitter.scanner.setScanIntervalMillis(500); |
| fileSplitter.scanner.setFilePatternRegularExp(".*[.]txt"); |
| fileSplitter.scanner.setFiles(dataDirectory); |
| fileSplitter.setWindowDataManager(new FSWindowDataManager()); |
| |
| Attribute.AttributeMap.DefaultAttributeMap attributes = new Attribute.AttributeMap.DefaultAttributeMap(); |
| attributes.put(Context.DAGContext.APPLICATION_PATH, dataDirectory); |
| |
| context = mockOperatorContext(0, attributes); |
| fileSplitter.setup(context); |
| |
| fileMetadataSink = new CollectorTestSink<>(); |
| TestUtils.setSink(fileSplitter.filesMetadataOutput, fileMetadataSink); |
| |
| blockMetadataSink = new CollectorTestSink<>(); |
| TestUtils.setSink(fileSplitter.blocksMetadataOutput, blockMetadataSink); |
| } |
| |
| @Override |
| protected void finished(Description description) |
| { |
| this.fileSplitter.teardown(); |
| } |
| } |
| |
| @ClassRule |
| public static TestClassMeta classTestMeta = new TestClassMeta(); |
| |
| @Rule |
| public TestMeta testMeta = new TestMeta(); |
| |
| @Test |
| public void testFileMetadata() throws InterruptedException |
| { |
| testMeta.fileSplitter.beginWindow(1); |
| testMeta.exchanger.exchange(null); |
| |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| Assert.assertEquals("File metadata", 12, testMeta.fileMetadataSink.collectedTuples.size()); |
| for (Object fileMetadata : testMeta.fileMetadataSink.collectedTuples) { |
| FileSplitter.FileMetadata metadata = (FileSplitter.FileMetadata)fileMetadata; |
| Assert.assertTrue("path: " + metadata.getFilePath(), testMeta.filePaths.contains(metadata.getFilePath())); |
| Assert.assertNotNull("name: ", metadata.getFileName()); |
| } |
| |
| testMeta.fileMetadataSink.collectedTuples.clear(); |
| } |
| |
| @Test |
| public void testBlockMetadataNoSplit() throws InterruptedException |
| { |
| testMeta.fileSplitter.beginWindow(1); |
| testMeta.exchanger.exchange(null); |
| |
| testMeta.fileSplitter.emitTuples(); |
| Assert.assertEquals("Blocks", 12, testMeta.blockMetadataSink.collectedTuples.size()); |
| for (Object blockMetadata : testMeta.blockMetadataSink.collectedTuples) { |
| BlockMetadata.FileBlockMetadata metadata = (BlockMetadata.FileBlockMetadata)blockMetadata; |
| Assert.assertTrue("path: " + metadata.getFilePath(), testMeta.filePaths.contains(metadata.getFilePath())); |
| } |
| } |
| |
| @Test |
| public void testBlockMetadataWithSplit() throws InterruptedException |
| { |
| testMeta.fileSplitter.setBlockSize(2L); |
| testMeta.fileSplitter.beginWindow(1); |
| testMeta.exchanger.exchange(null); |
| |
| testMeta.fileSplitter.emitTuples(); |
| Assert.assertEquals("Files", 12, testMeta.fileMetadataSink.collectedTuples.size()); |
| |
| int noOfBlocks = 0; |
| for (int i = 0; i < 12; i++) { |
| FileSplitter.FileMetadata fm = testMeta.fileMetadataSink.collectedTuples.get(i); |
| File testFile = new File(testMeta.dataDirectory, fm.getFileName()); |
| noOfBlocks += (int)Math.ceil(testFile.length() / (2 * 1.0)); |
| } |
| Assert.assertEquals("Blocks", noOfBlocks, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| @Test |
| public void testIdempotency() throws InterruptedException |
| { |
| FSWindowDataManager fsWindowDataManager = |
| new FSWindowDataManager(); |
| testMeta.fileSplitter.setWindowDataManager(fsWindowDataManager); |
| |
| testMeta.fileSplitter.setup(testMeta.context); |
| //will emit window 1 from data directory |
| testFileMetadata(); |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| testMeta.fileSplitter.setup(testMeta.context); |
| testMeta.fileSplitter.beginWindow(1); |
| Assert.assertEquals("Blocks", 12, testMeta.blockMetadataSink.collectedTuples.size()); |
| for (Object blockMetadata : testMeta.blockMetadataSink.collectedTuples) { |
| BlockMetadata.FileBlockMetadata metadata = (BlockMetadata.FileBlockMetadata)blockMetadata; |
| Assert.assertTrue("path: " + metadata.getFilePath(), testMeta.filePaths.contains(metadata.getFilePath())); |
| } |
| } |
| |
| @Test |
| public void testTimeScan() throws InterruptedException, IOException, TimeoutException |
| { |
| testFileMetadata(); |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| Thread.sleep(1000); |
| //added a new relativeFilePath |
| File f13 = new File(testMeta.dataDirectory, "file13" + ".txt"); |
| HashSet<String> lines = Sets.newHashSet(); |
| for (int line = 0; line < 2; line++) { |
| lines.add("f13" + "l" + line); |
| } |
| FileUtils.write(f13, StringUtils.join(lines, '\n')); |
| |
| //window 2 |
| testMeta.fileSplitter.beginWindow(2); |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("window 2: files", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("window 2: blocks", 1, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| @Test |
| public void testTrigger() throws InterruptedException, IOException, TimeoutException |
| { |
| testMeta.fileSplitter.scanner.setScanIntervalMillis(60 * 1000); |
| testFileMetadata(); |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| Thread.sleep(1000); |
| //added a new relativeFilePath |
| File f13 = new File(testMeta.dataDirectory, "file13" + ".txt"); |
| HashSet<String> lines = Sets.newHashSet(); |
| for (int line = 0; line < 2; line++) { |
| lines.add("f13" + "l" + line); |
| } |
| FileUtils.write(f13, StringUtils.join(lines, '\n')); |
| testMeta.fileSplitter.scanner.setTrigger(true); |
| |
| //window 2 |
| testMeta.fileSplitter.beginWindow(2); |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("window 2: files", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("window 2: blocks", 1, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| @Test |
| public void testBlocksThreshold() throws InterruptedException |
| { |
| int noOfBlocks = 0; |
| for (int i = 0; i < 12; i++) { |
| File testFile = new File(testMeta.dataDirectory, "file" + i + ".txt"); |
| noOfBlocks += (int)Math.ceil(testFile.length() / (2 * 1.0)); |
| } |
| |
| testMeta.fileSplitter.setBlockSize(2L); |
| testMeta.fileSplitter.setBlocksThreshold(10); |
| testMeta.fileSplitter.beginWindow(1); |
| |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("Blocks", 10, testMeta.blockMetadataSink.collectedTuples.size()); |
| |
| for (int window = 2; window < 8; window++) { |
| testMeta.fileSplitter.beginWindow(window); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| } |
| |
| Assert.assertEquals("Files", 12, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Blocks", noOfBlocks, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| @Test |
| public void testIdempotencyWithBlocksThreshold() throws InterruptedException |
| { |
| FSWindowDataManager fsWindowDataManager = new FSWindowDataManager(); |
| testMeta.fileSplitter.setWindowDataManager(fsWindowDataManager); |
| testMeta.fileSplitter.setBlocksThreshold(10); |
| testMeta.fileSplitter.scanner.setScanIntervalMillis(500); |
| testMeta.fileSplitter.setup(testMeta.context); |
| |
| testBlocksThreshold(); |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| testMeta.fileSplitter.setup(testMeta.context); |
| for (int i = 1; i < 8; i++) { |
| testMeta.fileSplitter.beginWindow(i); |
| } |
| Assert.assertEquals("Files", 12, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Blocks", 62, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| /** |
| * {@link FileSplitter} is deprecated because it has issues with recovery which is why disabling the next 2 tests. |
| */ |
| @Ignore |
| public void testFirstWindowAfterRecovery() throws IOException, InterruptedException |
| { |
| testIdempotencyWithBlocksThreshold(); |
| Thread.sleep(1000); |
| HashSet<String> lines = Sets.newHashSet(); |
| for (int line = 2; line < 4; line++) { |
| lines.add("f13" + "l" + line); |
| } |
| File f13 = new File(testMeta.dataDirectory, "file13" + ".txt"); |
| |
| FileUtils.writeLines(f13, lines, true); |
| |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| testMeta.fileSplitter.beginWindow(8); |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("Files", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Blocks", 6, testMeta.blockMetadataSink.collectedTuples.size()); |
| } |
| |
| @Ignore |
| public void testRecoveryOfPartialFile() throws InterruptedException |
| { |
| FSWindowDataManager fsIdempotentStorageManager = new FSWindowDataManager(); |
| fsIdempotentStorageManager.setStatePath(testMeta.dataDirectory + '/' + "recovery"); |
| testMeta.fileSplitter.setWindowDataManager(fsIdempotentStorageManager); |
| testMeta.fileSplitter.setBlockSize(2L); |
| testMeta.fileSplitter.setBlocksThreshold(2); |
| testMeta.fileSplitter.scanner.setScanIntervalMillis(500); |
| |
| testMeta.fileSplitter.setup(testMeta.context); |
| |
| testMeta.fileSplitter.beginWindow(1); |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| //file0.txt has just 5 blocks. Since blocks threshold is 2, only 2 are emitted. |
| Assert.assertEquals("Files", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Blocks", 2, testMeta.blockMetadataSink.collectedTuples.size()); |
| |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| //there was a failure and the operator was re-deployed |
| testMeta.fileSplitter.setup(testMeta.context); |
| testMeta.fileSplitter.beginWindow(1); |
| |
| Assert.assertEquals("Recovered Files", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Recovered Blocks", 2, testMeta.blockMetadataSink.collectedTuples.size()); |
| |
| testMeta.fileSplitter.beginWindow(2); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("Blocks", 4, testMeta.blockMetadataSink.collectedTuples.size()); |
| |
| String file1 = testMeta.fileMetadataSink.collectedTuples.get(0).getFileName(); |
| |
| testMeta.fileMetadataSink.clear(); |
| testMeta.blockMetadataSink.clear(); |
| |
| testMeta.fileSplitter.beginWindow(3); |
| testMeta.exchanger.exchange(null); |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| |
| Assert.assertEquals("New file", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("Blocks", 2, testMeta.blockMetadataSink.collectedTuples.size()); |
| |
| String file2 = testMeta.fileMetadataSink.collectedTuples.get(0).getFileName(); |
| |
| Assert.assertTrue("Block file name 0", |
| testMeta.blockMetadataSink.collectedTuples.get(0).getFilePath().endsWith(file1)); |
| Assert.assertTrue("Block file name 1", |
| testMeta.blockMetadataSink.collectedTuples.get(1).getFilePath().endsWith(file2)); |
| } |
| |
| @Test |
| public void testSingleFile() throws InterruptedException, IOException |
| { |
| testMeta.fileSplitter.teardown(); |
| testMeta.fileSplitter.scanner = new MockScanner(testMeta); |
| testMeta.fileSplitter.scanner.regex = null; |
| testMeta.fileSplitter.scanner.setFiles(testMeta.dataDirectory + "/file1.txt"); |
| |
| testMeta.fileSplitter.setup(testMeta.context); |
| testMeta.fileSplitter.beginWindow(1); |
| testMeta.exchanger.exchange(null); |
| |
| testMeta.fileSplitter.emitTuples(); |
| testMeta.fileSplitter.endWindow(); |
| Assert.assertEquals("File metadata count", 1, testMeta.fileMetadataSink.collectedTuples.size()); |
| Assert.assertEquals("File metadata", new File(testMeta.dataDirectory + "/file1.txt").getAbsolutePath(), |
| testMeta.fileMetadataSink.collectedTuples.get(0).getFilePath()); |
| } |
| |
| private static class MockScanner extends FileSplitter.TimeBasedDirectoryScanner |
| { |
| TestMeta testMeta; |
| |
| MockScanner(TestMeta testMeta) |
| { |
| this.testMeta = testMeta; |
| } |
| |
| @Override |
| protected void scanComplete() |
| { |
| super.scanComplete(); |
| try { |
| if (discoveredFiles.size() > 0 && discoveredFiles.getLast().lastFileOfScan) { |
| LOG.debug("discovered {}", discoveredFiles.size()); |
| testMeta.exchanger.exchange(discoveredFiles.size()); |
| } |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FileSplitterTest.class); |
| } |