001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.mapreduce;
019
020import java.io.ByteArrayInputStream;
021import java.io.ByteArrayOutputStream;
022import java.io.File;
023import java.io.FileOutputStream;
024import java.io.FileWriter;
025import java.io.IOException;
026import java.io.OutputStream;
027import java.io.Writer;
028import java.text.MessageFormat;
029import java.util.Properties;
030import java.util.jar.JarInputStream;
031import java.util.jar.JarOutputStream;
032import java.util.jar.Manifest;
033import org.apache.hadoop.hbase.HBaseClassTestRule;
034import org.apache.hadoop.hbase.testclassification.SmallTests;
035import org.junit.Assert;
036import org.junit.ClassRule;
037import org.junit.Test;
038import org.junit.experimental.categories.Category;
039import org.slf4j.LoggerFactory;
040
041/**
042 * This file was forked from hadoop/common/branches/branch-2@1350012.
043 */
044@Category(SmallTests.class)
045public class TestJarFinder {
046
047  @ClassRule
048  public static final HBaseClassTestRule CLASS_RULE =
049    HBaseClassTestRule.forClass(TestJarFinder.class);
050
051  @Test
052  public void testJar() throws Exception {
053
054    // picking a class that is for sure in a JAR in the classpath
055    String jar = JarFinder.getJar(LoggerFactory.class);
056    Assert.assertTrue(new File(jar).exists());
057  }
058
059  private static void delete(File file) throws IOException {
060    if (file.getAbsolutePath().length() < 5) {
061      throw new IllegalArgumentException(
062        MessageFormat.format("Path [{0}] is too short, not deleting", file.getAbsolutePath()));
063    }
064    if (file.exists()) {
065      if (file.isDirectory()) {
066        File[] children = file.listFiles();
067        if (children != null) {
068          for (File child : children) {
069            delete(child);
070          }
071        }
072      }
073      if (!file.delete()) {
074        throw new RuntimeException(
075          MessageFormat.format("Could not delete path [{0}]", file.getAbsolutePath()));
076      }
077    }
078  }
079
080  @Test
081  public void testExpandedClasspath() throws Exception {
082    // picking a class that is for sure in a directory in the classpath
083    // in this case the JAR is created on the fly
084    String jar = JarFinder.getJar(TestJarFinder.class);
085    Assert.assertTrue(new File(jar).exists());
086  }
087
088  @Test
089  public void testExistingManifest() throws Exception {
090    File dir = new File(System.getProperty("test.build.dir", "target/test-dir"),
091      TestJarFinder.class.getName() + "-testExistingManifest");
092    delete(dir);
093    dir.mkdirs();
094
095    File metaInfDir = new File(dir, "META-INF");
096    metaInfDir.mkdirs();
097    File manifestFile = new File(metaInfDir, "MANIFEST.MF");
098    Manifest manifest = new Manifest();
099    OutputStream os = new FileOutputStream(manifestFile);
100    manifest.write(os);
101    os.close();
102
103    File propsFile = new File(dir, "props.properties");
104    Writer writer = new FileWriter(propsFile);
105    new Properties().store(writer, "");
106    writer.close();
107    ByteArrayOutputStream baos = new ByteArrayOutputStream();
108    JarOutputStream zos = new JarOutputStream(baos);
109    JarFinder.jarDir(dir, "", zos);
110    JarInputStream jis = new JarInputStream(new ByteArrayInputStream(baos.toByteArray()));
111    Assert.assertNotNull(jis.getManifest());
112    jis.close();
113  }
114
115  @Test
116  public void testNoManifest() throws Exception {
117    File dir = new File(System.getProperty("test.build.dir", "target/test-dir"),
118      TestJarFinder.class.getName() + "-testNoManifest");
119    delete(dir);
120    dir.mkdirs();
121    File propsFile = new File(dir, "props.properties");
122    Writer writer = new FileWriter(propsFile);
123    new Properties().store(writer, "");
124    writer.close();
125    ByteArrayOutputStream baos = new ByteArrayOutputStream();
126    JarOutputStream zos = new JarOutputStream(baos);
127    JarFinder.jarDir(dir, "", zos);
128    JarInputStream jis = new JarInputStream(new ByteArrayInputStream(baos.toByteArray()));
129    Assert.assertNotNull(jis.getManifest());
130    jis.close();
131  }
132}