Java Code Examples for java.nio.file.attribute.BasicFileAttributes#lastAccessTime()

/**
 * A default, reusable and overridable means of adding file attributes to a document
 *
 * @param attributes The attributes of the scanned file as returned by
 *                   {@link java.nio.file.Files#getFileAttributeView(Path, Class, LinkOption...)}
 * @param doc        The document representing the scanned file to which attributes should be added.
 */
default void addAttrs(BasicFileAttributes attributes, DocumentImpl doc) {
  if (attributes != null) {
    FileTime modifiedTime = attributes.lastModifiedTime();
    FileTime accessTime = attributes.lastAccessTime();
    FileTime creationTime = attributes.creationTime();
    if (modifiedTime != null) {
      doc.put("modified", String.valueOf(modifiedTime.toMillis()));
    }
    if (accessTime != null) {
      doc.put("accessed", String.valueOf(accessTime.toMillis()));
    }
    if (creationTime != null) {
      doc.put("created", String.valueOf(creationTime.toMillis()));
    }
    doc.put("file_size", String.valueOf(attributes.size()));
  }
}
 

@Override
public FileVisitResult visitFile(java.nio.file.Path file, BasicFileAttributes attrs) throws IOException
{
  if (file != null) {
    java.nio.file.Path nameOnly = file.getFileName();
    if (nameOnly != null) {
      String fileName = nameOnly.toString();
      if (fileName.equals("index")) {
        indexAttributes = attrs;
        if (attrs.lastAccessTime().compareTo(lastAccessTime) < 0) {
          lastAccessTime = attrs.lastAccessTime();
        }
      } else if (fileName.equals("data")) {
        dataAttributes = attrs;
        if (attrs.lastAccessTime().compareTo(lastAccessTime) < 0) {
          lastAccessTime = attrs.lastAccessTime();
        }
      }
    }
  }
  return FileVisitResult.CONTINUE;
}
 

public static Runnable createAutosaveCleanup() {
  long now = CalendarFactory.newCalendar().getTimeInMillis();
  final File tempDir = getTempDir();
  final long cutoff;
  try {
    File optionsFile = GanttOptions.getOptionsFile();
    if (!optionsFile.exists()) {
      return null;
    }
    GPLogger.log("Options file:" + optionsFile.getAbsolutePath());
    BasicFileAttributes attrs = Files.readAttributes(optionsFile.toPath(), BasicFileAttributes.class);
    FileTime accessTime = attrs.lastAccessTime();
    cutoff = Math.min(accessTime.toMillis(), now);
  } catch (IOException e) {
    GPLogger.log(e);
    return null;
  }
  return new Runnable() {
    @Override
    public void run() {
      GPLogger.log("Deleting old auto-save files");
      deleteAutosaves();
    }

    private void deleteAutosaves() {
      // Let's find autosaves created before launch of this GP instance
      File[] previousAutosaves = tempDir.listFiles(new FileFilter() {
        @Override
        public boolean accept(File file) {
          return file.getName().startsWith("_ganttproject_autosave") && file.lastModified() < cutoff;
        }
      });
      for (File f : previousAutosaves) {
        f.deleteOnExit();
      }
    }
  };
}
 

FileTimeTester(Path path) throws IOException {
  this.path = path;

  BasicFileAttributes attrs = attrs();
  accessTime = attrs.lastAccessTime();
  modifiedTime = attrs.lastModifiedTime();
}
 

public static void main(String[] args)
    throws InterruptedException, IOException {

    // Use 'which' to verify that 'nc' is available and skip the test
    // if it is not.
    Process proc = Runtime.getRuntime().exec("which nc");
    InputStream stdout = proc.getInputStream();
    int b = stdout.read();
    proc.destroy();
    if (b == -1) {
        System.err.println("Netcat command unavailable; skipping test.");
        return;
    }

    // Create a new sub-directory of the nominal test directory in which
    // 'nc' will create the socket file.
    String testSubDir = System.getProperty("test.dir", ".")
        + File.separator + TEST_SUB_DIR;
    Path socketTestDir = Paths.get(testSubDir);
    Files.createDirectory(socketTestDir);

    // Set the path of the socket file.
    String socketFilePath = testSubDir + File.separator
        + SOCKET_FILE_NAME;

    // Create a process which executes the nc (netcat) utility to create
    // a socket file at the indicated location.
    FileSystem fs = FileSystems.getDefault();
    try (WatchService ws = fs.newWatchService()) {
        // Watch the test sub-directory to receive notification when an
        // entry, i.e., the socket file, is added to the sub-directory.
        WatchKey wk = socketTestDir.register(ws,
                StandardWatchEventKinds.ENTRY_CREATE);

        // Execute the 'nc' command.
        proc = Runtime.getRuntime().exec(CMD_BASE + " " + socketFilePath);

        // Wait until the socket file is created.
        WatchKey key = ws.take();
        if (key != wk) {
            throw new RuntimeException("Unknown entry created - expected: "
                + wk.watchable() + ", actual: " + key.watchable());
        }
        wk.cancel();
    }

    // Verify that the socket file in fact exists.
    Path socketPath = fs.getPath(socketFilePath);
    if (!Files.exists(socketPath)) {
        throw new RuntimeException("Socket file " + socketFilePath
            + " was not created by \"nc\" command.");
    }

    // Retrieve the most recent access and modification times of the
    // socket file; print the values.
    BasicFileAttributeView attributeView = Files.getFileAttributeView(
            socketPath, BasicFileAttributeView.class);
    BasicFileAttributes oldAttributes = attributeView.readAttributes();
    FileTime oldAccessTime = oldAttributes.lastAccessTime();
    FileTime oldModifiedTime = oldAttributes.lastModifiedTime();
    System.out.println("Old times: " + oldAccessTime
        + " " + oldModifiedTime);

    // Calculate the time to which the access and modification times of the
    // socket file will be changed.
    FileTime newFileTime =
        FileTime.fromMillis(oldAccessTime.toMillis() + 1066);

    try {
        // Set the access and modification times of the socket file.
        attributeView.setTimes(newFileTime, newFileTime, null);

        // Retrieve the updated access and modification times of the
        // socket file; print the values.
        FileTime newAccessTime = null;
        FileTime newModifiedTime = null;
        BasicFileAttributes newAttributes = attributeView.readAttributes();
        newAccessTime = newAttributes.lastAccessTime();
        newModifiedTime = newAttributes.lastModifiedTime();
        System.out.println("New times: " + newAccessTime + " "
            + newModifiedTime);

        // Verify that the updated times have the expected values.
        if ((newAccessTime != null && !newAccessTime.equals(newFileTime))
            || (newModifiedTime != null
                && !newModifiedTime.equals(newFileTime))) {
            throw new RuntimeException("Failed to set correct times.");
        }
    } finally {
        // Destry the process running netcat and delete the socket file.
        proc.destroy();
        Files.delete(socketPath);
    }
}
 

public static <T> MCRFileAttributes<T> fromAttributes(BasicFileAttributes attrs, String md5) {
    return new MCRFileAttributes<>(FileType.fromAttribute(attrs), attrs.size(), (T) attrs.fileKey(), md5,
        attrs.creationTime(), attrs.lastModifiedTime(), attrs.lastAccessTime());
}
 

@Test
public void testPreserveFileAttributes() throws Exception {
    // can only change ownership if root
    boolean isRoot = "root".equals(System.getProperty("user.name"));
    if (isRoot) log.warn("detected root execution");

    Integer uid = 1111, gid = 2222;
    Set<PosixFilePermission> permissions = new HashSet<>(Arrays.asList(PosixFilePermission.OWNER_READ,
            PosixFilePermission.OTHERS_READ, PosixFilePermission.OTHERS_WRITE, PosixFilePermission.OTHERS_EXECUTE));
    String mode = "0407"; // matches permissions above

    // write 10 files
    writeTestFiles(sourceDir, 10, 10 * 1024, uid, gid, permissions);

    SyncOptions options = new SyncOptions().withThreadCount(16);

    // sync 10 files to a test target
    FilesystemConfig fsConfig = new FilesystemConfig();
    fsConfig.setPath(sourceDir.getPath());

    TestConfig testConfig = new TestConfig().withReadData(true).withDiscardData(false);

    EcsSync sync = new EcsSync();
    sync.setSyncConfig(new SyncConfig().withOptions(options).withSource(fsConfig).withTarget(testConfig)
            .withFilters(Collections.singletonList(new PreserveFileAttributesConfig())));
    sync.run();

    Assert.assertEquals(0, sync.getStats().getObjectsFailed());
    Assert.assertEquals(10, sync.getStats().getObjectsComplete());

    TestStorage testStorage = (TestStorage) sync.getTarget();

    // NOTE: new ClarityNow! DataMover spec only records to the hundredth of a second
    for (SyncObject object : testStorage.getRootObjects()) {
        File file = new File(sourceDir, object.getRelativePath());
        BasicFileAttributes attributes = Files.getFileAttributeView(file.toPath(), BasicFileAttributeView.class,
                LinkOption.NOFOLLOW_LINKS).readAttributes();
        FileTime mtime = attributes.lastModifiedTime();
        FileTime atime = attributes.lastAccessTime();
        FileTime crtime = attributes.creationTime();
        String mtimeSecs = object.getMetadata().getUserMetadataValue(PreserveFilters.META_MTIME);
        if (mtime == null) Assert.assertNull(mtimeSecs);
        else Assert.assertEquals(mtime.toMillis() / 10, (long) (Double.parseDouble(mtimeSecs) * 100D));
        String atimeSecs = object.getMetadata().getUserMetadataValue(PreserveFilters.META_ATIME);
        if (atime == null) Assert.assertNull(atimeSecs);
        else // atime is affected by reading the file times
            Assert.assertTrue(Math.abs(atime.toMillis() - (long) (Double.parseDouble(atimeSecs) * 1000D)) < 1000);
        String crtimeSecs = object.getMetadata().getUserMetadataValue(PreserveFilters.META_CRTIME);
        if (crtime == null) Assert.assertNull(crtimeSecs);
        else Assert.assertEquals(crtime.toMillis() / 10, (long) (Double.parseDouble(crtimeSecs) * 100D));

        // if possible, check ctime
        FileTime ctime = (FileTime) Files.getAttribute(file.toPath(), "unix:ctime");
        String ctimeSecs = object.getMetadata().getUserMetadataValue(PreserveFilters.META_CTIME);
        if (ctime == null) Assert.assertNull(ctimeSecs);
        else Assert.assertEquals(ctime.toMillis() / 10, (long) (Double.parseDouble(ctimeSecs) * 100D));

        // check permissions
        if (isRoot) {
            Assert.assertEquals(uid.toString(), object.getMetadata().getUserMetadataValue(PreserveFilters.META_OWNER));
            Assert.assertEquals(gid.toString(), object.getMetadata().getUserMetadataValue(PreserveFilters.META_GROUP));
        }
        Assert.assertEquals(mode, object.getMetadata().getUserMetadataValue(PreserveFilters.META_PERMISSIONS));
    }
}
 

@Test
public void testRestoreFileAttributes() throws Exception {
    // can only change ownership if root
    boolean isRoot = "root".equals(System.getProperty("user.name"));
    if (isRoot) log.warn("detected root execution");

    // write 10 files
    Integer uid = 1111, gid = 2222;
    Set<PosixFilePermission> permissions = new HashSet<>(Arrays.asList(PosixFilePermission.OWNER_READ,
            PosixFilePermission.OTHERS_READ, PosixFilePermission.OTHERS_WRITE, PosixFilePermission.OTHERS_EXECUTE));

    // write 10 files
    writeTestFiles(sourceDir, 10, 10 * 1024, uid, gid, permissions);

    SyncOptions options = new SyncOptions().withThreadCount(16).withVerify(true);

    // sync files to a test target
    FilesystemConfig fsConfig = new FilesystemConfig();
    fsConfig.setPath(sourceDir.getPath());

    TestConfig testConfig = new TestConfig().withReadData(true).withDiscardData(false);

    EcsSync sync = new EcsSync();
    sync.setSyncConfig(new SyncConfig().withOptions(options).withSource(fsConfig).withTarget(testConfig)
            .withFilters(Collections.singletonList(new PreserveFileAttributesConfig())));
    sync.run();

    Assert.assertEquals(0, sync.getStats().getObjectsFailed());
    Assert.assertEquals(10, sync.getStats().getObjectsComplete());

    // wait a tick to make sure mtimes are different
    Thread.sleep(1000);

    TestStorage testStorage = (TestStorage) sync.getTarget();

    // sync from test target back to filesystem in a separate dir
    fsConfig.setPath(targetDir.getPath());

    options.setVerify(false); // verification will screw up atime
    sync = new EcsSync();
    sync.setSyncConfig(new SyncConfig().withOptions(options).withTarget(fsConfig)
            .withFilters(Collections.singletonList(new RestoreFileAttributesConfig())));
    sync.setSource(testStorage);
    sync.run();

    Assert.assertEquals(0, sync.getStats().getObjectsFailed());
    Assert.assertEquals(10, sync.getStats().getObjectsComplete());

    // NOTE: new ClarityNow! DataMover spec only records to the hundredth of a second
    for (File sourceFile : sourceDir.listFiles()) {
        File targetFile = new File(targetDir, sourceFile.getName());
        BasicFileAttributes attributes = Files.getFileAttributeView(sourceFile.toPath(),
                BasicFileAttributeView.class, LinkOption.NOFOLLOW_LINKS).readAttributes();
        // java's time parsing is only millisecond-accurate
        FileTime sourceMtime = FileTime.fromMillis(attributes.lastModifiedTime().toMillis());
        FileTime sourceAtime = FileTime.fromMillis(attributes.lastAccessTime().toMillis());
        FileTime sourceCrtime = FileTime.fromMillis(attributes.creationTime().toMillis());
        attributes = Files.getFileAttributeView(targetFile.toPath(),
                BasicFileAttributeView.class, LinkOption.NOFOLLOW_LINKS).readAttributes();
        FileTime targetMtime = attributes.lastModifiedTime();
        FileTime targetAtime = attributes.lastAccessTime();
        FileTime targetCrtime = attributes.creationTime();
        Assert.assertEquals(sourceMtime.toMillis() / 10, targetMtime.toMillis() /10);
        // atime is affected by reading the file times
        Assert.assertTrue(Math.abs(sourceAtime.toMillis() - targetAtime.toMillis()) <= 2000);
        Assert.assertEquals(sourceCrtime.toMillis() / 10, targetCrtime.toMillis() / 10);

        // check permissions
        if (isRoot) Assert.assertEquals(uid, Files.getAttribute(targetFile.toPath(), "unix:uid"));
        if (isRoot) Assert.assertEquals(gid, Files.getAttribute(targetFile.toPath(), "unix:gid"));
        Assert.assertEquals(permissions, Files.getPosixFilePermissions(targetFile.toPath()));
    }
}
 

@Test
public void file_last_accessed_time_nio () throws IOException {

	BasicFileAttributes attr = Files.readAttributes(source, BasicFileAttributes.class);

	FileTime lastAccessed = attr.lastAccessTime();
	
	assertEquals(1390446166000l, lastAccessed.toMillis());
}