| /** |
| * 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.hadoop.mapred; |
| |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.PathFilter; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.io.OutputStreamWriter; |
| import java.util.Set; |
| import java.util.HashSet; |
| |
| public class TestFileInputFormatPathFilter { |
| |
| public static class DummyFileInputFormat extends FileInputFormat { |
| |
| public RecordReader getRecordReader(InputSplit split, JobConf job, |
| Reporter reporter) throws IOException { |
| return null; |
| } |
| |
| } |
| |
| private static FileSystem localFs = null; |
| |
| static { |
| try { |
| localFs = FileSystem.getLocal(new JobConf()); |
| } catch (IOException e) { |
| throw new RuntimeException("init failure", e); |
| } |
| } |
| |
| private static Path workDir = |
| new Path(new Path(System.getProperty("test.build.data", "."), "data"), |
| "TestFileInputFormatPathFilter"); |
| |
| @Before |
| public void setUp() throws Exception { |
| tearDown(); |
| localFs.mkdirs(workDir); |
| } |
| @After |
| public void tearDown() throws Exception { |
| if (localFs.exists(workDir)) { |
| localFs.delete(workDir, true); |
| } |
| } |
| |
| protected Path createFile(String fileName) throws IOException { |
| Path file = new Path(workDir, fileName); |
| Writer writer = new OutputStreamWriter(localFs.create(file)); |
| writer.write(""); |
| writer.close(); |
| return localFs.makeQualified(file); |
| } |
| |
| protected Set<Path> createFiles() throws IOException { |
| Set<Path> files = new HashSet<Path>(); |
| files.add(createFile("a")); |
| files.add(createFile("b")); |
| files.add(createFile("aa")); |
| files.add(createFile("bb")); |
| files.add(createFile("_hello")); |
| files.add(createFile(".hello")); |
| return files; |
| } |
| |
| |
| public static class TestPathFilter implements PathFilter { |
| |
| public boolean accept(Path path) { |
| String name = path.getName(); |
| return name.equals("TestFileInputFormatPathFilter") || name.length() == 1; |
| } |
| } |
| |
| private void _testInputFiles(boolean withFilter, boolean withGlob) throws Exception { |
| Set<Path> createdFiles = createFiles(); |
| JobConf conf = new JobConf(); |
| |
| Path inputDir = (withGlob) ? new Path(workDir, "a*") : workDir; |
| FileInputFormat.setInputPaths(conf, inputDir); |
| conf.setInputFormat(DummyFileInputFormat.class); |
| |
| if (withFilter) { |
| FileInputFormat.setInputPathFilter(conf, TestPathFilter.class); |
| } |
| |
| DummyFileInputFormat inputFormat = |
| (DummyFileInputFormat) conf.getInputFormat(); |
| Set<Path> computedFiles = new HashSet<Path>(); |
| for (FileStatus file : inputFormat.listStatus(conf)) { |
| computedFiles.add(file.getPath()); |
| } |
| |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, "_hello"))); |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, ".hello"))); |
| |
| if (withFilter) { |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, "aa"))); |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, "bb"))); |
| } |
| |
| if (withGlob) { |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, "b"))); |
| createdFiles.remove(localFs.makeQualified(new Path(workDir, "bb"))); |
| } |
| assertEquals(createdFiles, computedFiles); |
| } |
| |
| @Test |
| public void testWithoutPathFilterWithoutGlob() throws Exception { |
| _testInputFiles(false, false); |
| } |
| @Test |
| public void testWithoutPathFilterWithGlob() throws Exception { |
| _testInputFiles(false, true); |
| } |
| @Test |
| public void testWithPathFilterWithoutGlob() throws Exception { |
| _testInputFiles(true, false); |
| } |
| @Test |
| public void testWithPathFilterWithGlob() throws Exception { |
| _testInputFiles(true, true); |
| } |
| } |