Java 类org.apache.hadoop.fs.TrashPolicy 实例源码

@Test
public void testMoveToTrash() throws IOException {
  Path hadoopUtilsTestDir = new Path(Files.createTempDir().getAbsolutePath(), "HadoopUtilsTestDir");
  Configuration conf = new Configuration();
  // Set the time to keep it in trash to 10 minutes.
  // 0 means object will be deleted instantly.
  conf.set("fs.trash.interval", "10");
  FileSystem fs = FileSystem.getLocal(conf);
  Trash trash = new Trash(fs, conf);
  TrashPolicy trashPolicy = TrashPolicy.getInstance(conf, fs, fs.getHomeDirectory());
  Path trashPath = trashPolicy.getCurrentTrashDir();

  fs.mkdirs(hadoopUtilsTestDir);
  Assert.assertTrue(fs.exists(hadoopUtilsTestDir));
  trash.moveToTrash(hadoopUtilsTestDir.getParent());
  Assert.assertFalse(fs.exists(hadoopUtilsTestDir));
  Assert.assertTrue(fs.exists(trashPath));
}

public void testFileDeleteWithTrash() throws IOException {
  Configuration conf = new Configuration();
  conf.set("fs.trash.interval", "10"); // 10 minute

  // create cluster
  MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null);
  FileSystem fs = null;
  try {
    cluster.waitActive();
    fs = cluster.getFileSystem();

    // create file1.
    Path dir = new Path("/foo");
    Path file1 = new Path(dir, "file1");
    createFile(fs, file1);
    System.out.println("testFileCreationDeleteParent: "
        + "Created file " + file1);
    fs.delete(file1, true);

    // create file2.
    Path file2 = new Path("/tmp", "file2");
    createFile(fs, file2);
    System.out.println("testFileCreationDeleteParent: "
        + "Created file " + file2);
    fs.delete(file2, true);

    TrashPolicy trashPolicy = TrashPolicy.getInstance(conf, fs, fs.getHomeDirectory());
    Path trashRoot = trashPolicy.getCurrentTrashDir();
    TestTrash.checkTrash(fs, trashRoot, file1);
    TestTrash.checkNotInTrash(fs, trashRoot, file2.toString());
  } finally {
    fs.close();
    cluster.shutdown();
  }
}

public void testFileDeleteWithTrash() throws IOException {
  Configuration conf = new Configuration();
  conf.set("fs.trash.interval", "10"); // 10 minute

  // create cluster
  MiniDFSCluster cluster = new MiniDFSCluster(conf, 1, true, null);
  FileSystem fs = null;
  try {
    cluster.waitActive();
    fs = cluster.getFileSystem();

    // create file1.
    Path dir = new Path("/foo");
    Path file1 = new Path(dir, "file1");
    createFile(fs, file1);
    System.out.println("testFileCreationDeleteParent: "
        + "Created file " + file1);
    fs.delete(file1, true);

    // create file2.
    Path file2 = new Path("/tmp", "file2");
    createFile(fs, file2);
    System.out.println("testFileCreationDeleteParent: "
        + "Created file " + file2);
    fs.delete(file2, true);

    TrashPolicy trashPolicy = TrashPolicy.getInstance(conf, fs, fs.getHomeDirectory());
    Path trashRoot = trashPolicy.getCurrentTrashDir();
    TestTrash.checkTrash(fs, trashRoot, file1);
    TestTrash.checkNotInTrash(fs, trashRoot, file2.toString());
  } finally {
    fs.close();
    cluster.shutdown();
  }
}