| /** |
| * 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.tools; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapreduce.Cluster; |
| import org.apache.hadoop.mapreduce.JobSubmissionFiles; |
| import org.apache.hadoop.tools.util.TestDistCpUtils; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.security.Permission; |
| |
| public class TestExternalCall { |
| |
| private static final Log LOG = LogFactory.getLog(TestExternalCall.class); |
| |
| private static FileSystem fs; |
| |
| private static String root; |
| |
| private static Configuration getConf() { |
| Configuration conf = new Configuration(); |
| conf.set("fs.default.name", "file:///"); |
| conf.set("mapred.job.tracker", "local"); |
| return conf; |
| } |
| |
| @Before |
| public void setup() { |
| |
| securityManager = System.getSecurityManager(); |
| System.setSecurityManager(new NoExitSecurityManager()); |
| try { |
| fs = FileSystem.get(getConf()); |
| root = new Path("target/tmp").makeQualified(fs.getUri(), |
| fs.getWorkingDirectory()).toString(); |
| TestDistCpUtils.delete(fs, root); |
| } catch (IOException e) { |
| LOG.error("Exception encountered ", e); |
| } |
| } |
| |
| @After |
| public void tearDown() { |
| System.setSecurityManager(securityManager); |
| } |
| /** |
| * test methods run end execute of DistCp class. silple copy file |
| * @throws Exception |
| */ |
| @Test |
| public void testCleanup() throws Exception { |
| |
| Configuration conf = getConf(); |
| |
| Path stagingDir = JobSubmissionFiles.getStagingDir(new Cluster(conf), |
| conf); |
| stagingDir.getFileSystem(conf).mkdirs(stagingDir); |
| Path soure = createFile("tmp.txt"); |
| Path target = createFile("target.txt"); |
| |
| DistCp distcp = new DistCp(conf, null); |
| String[] arg = { soure.toString(), target.toString() }; |
| |
| distcp.run(arg); |
| Assert.assertTrue(fs.exists(target)); |
| |
| |
| } |
| |
| private Path createFile(String fname) throws IOException { |
| Path result = new Path(root + "/" + fname); |
| OutputStream out = fs.create(result); |
| try { |
| out.write((root + "/" + fname).getBytes()); |
| out.write("\n".getBytes()); |
| } finally { |
| out.close(); |
| } |
| return result; |
| } |
| |
| /** |
| * test main method of DistCp. Method should to call System.exit(). |
| * |
| */ |
| @Test |
| public void testCleanupTestViaToolRunner() throws IOException, InterruptedException { |
| |
| Configuration conf = getConf(); |
| |
| Path stagingDir = JobSubmissionFiles.getStagingDir(new Cluster(conf), conf); |
| stagingDir.getFileSystem(conf).mkdirs(stagingDir); |
| |
| Path soure = createFile("tmp.txt"); |
| Path target = createFile("target.txt"); |
| try { |
| |
| String[] arg = {target.toString(),soure.toString()}; |
| DistCp.main(arg); |
| Assert.fail(); |
| |
| } catch (ExitException t) { |
| Assert.assertTrue(fs.exists(target)); |
| Assert.assertEquals(t.status, 0); |
| Assert.assertEquals( |
| stagingDir.getFileSystem(conf).listStatus(stagingDir).length, 0); |
| } |
| |
| } |
| |
| private SecurityManager securityManager; |
| |
| protected static class ExitException extends SecurityException { |
| private static final long serialVersionUID = -1982617086752946683L; |
| public final int status; |
| |
| public ExitException(int status) { |
| super("There is no escape!"); |
| this.status = status; |
| } |
| } |
| |
| private static class NoExitSecurityManager extends SecurityManager { |
| @Override |
| public void checkPermission(Permission perm) { |
| // allow anything. |
| } |
| |
| @Override |
| public void checkPermission(Permission perm, Object context) { |
| // allow anything. |
| } |
| |
| @Override |
| public void checkExit(int status) { |
| super.checkExit(status); |
| throw new ExitException(status); |
| } |
| } |
| } |