| /** |
| * 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.streaming; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.util.Shell.ShellCommandExecutor; |
| |
| class UtilTest { |
| |
| private static final Log LOG = LogFactory.getLog(UtilTest.class); |
| |
| /** |
| * Utility routine to recurisvely delete a directory. |
| * On normal return, the file does not exist. |
| * |
| * @param file File or directory to delete. |
| * |
| * @throws RuntimeException if the file, or some file within |
| * it, could not be deleted. |
| */ |
| static void recursiveDelete(File file) { |
| file = file.getAbsoluteFile(); |
| |
| if (!file.exists()) return; |
| |
| if (file.isDirectory()) { |
| for (File child : file.listFiles()) { |
| recursiveDelete(child); |
| } |
| } |
| if (!file.delete()) { |
| throw new RuntimeException("Failed to delete " + file); |
| } |
| } |
| |
| public UtilTest(String testName) { |
| testName_ = testName; |
| userDir_ = System.getProperty("user.dir"); |
| antTestDir_ = System.getProperty("test.build.data", userDir_); |
| System.out.println("test.build.data-or-user.dir=" + antTestDir_); |
| } |
| |
| void checkUserDir() { |
| // // trunk/src/contrib/streaming --> trunk/build/contrib/streaming/test/data |
| // if (!userDir_.equals(antTestDir_)) { |
| // // because changes to user.dir are ignored by File static methods. |
| // throw new IllegalStateException("user.dir != test.build.data. The junit Ant task must be forked."); |
| // } |
| } |
| |
| void redirectIfAntJunit() throws IOException |
| { |
| boolean fromAntJunit = System.getProperty("test.build.data") != null; |
| if (fromAntJunit) { |
| new File(antTestDir_).mkdirs(); |
| File outFile = new File(antTestDir_, testName_+".log"); |
| PrintStream out = new PrintStream(new FileOutputStream(outFile)); |
| System.setOut(out); |
| System.setErr(out); |
| } |
| } |
| |
| public static String collate(List<String> args, String sep) { |
| StringBuffer buf = new StringBuffer(); |
| Iterator<String> it = args.iterator(); |
| while (it.hasNext()) { |
| if (buf.length() > 0) { |
| buf.append(" "); |
| } |
| buf.append(it.next()); |
| } |
| return buf.toString(); |
| } |
| |
| public static String makeJavaCommand(Class<?> main, String[] argv) { |
| ArrayList<String> vargs = new ArrayList<String>(); |
| File javaHomeBin = new File(System.getProperty("java.home"), "bin"); |
| File jvm = new File(javaHomeBin, "java"); |
| vargs.add(jvm.toString()); |
| // copy parent classpath |
| vargs.add("-classpath"); |
| vargs.add("\"" + System.getProperty("java.class.path") + "\""); |
| |
| // add heap-size limit |
| vargs.add("-Xmx" + Runtime.getRuntime().maxMemory()); |
| |
| // Add main class and its arguments |
| vargs.add(main.getName()); |
| for (int i = 0; i < argv.length; i++) { |
| vargs.add(argv[i]); |
| } |
| return collate(vargs, " "); |
| } |
| |
| /** |
| * Is perl supported on this machine ? |
| * @return true if perl is available and is working as expected |
| */ |
| public static boolean hasPerlSupport() { |
| boolean hasPerl = false; |
| ShellCommandExecutor shexec = new ShellCommandExecutor( |
| new String[] { "perl", "-e", "print 42" }); |
| try { |
| shexec.execute(); |
| if (shexec.getOutput().equals("42")) { |
| hasPerl = true; |
| } |
| else { |
| LOG.warn("Perl is installed, but isn't behaving as expected."); |
| } |
| } catch (Exception e) { |
| LOG.warn("Could not run perl: " + e); |
| } |
| return hasPerl; |
| } |
| |
| private String userDir_; |
| private String antTestDir_; |
| private String testName_; |
| } |