Java FileStatus.isFile方法代碼示例

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
private List<Path> convertInputToPaths() throws IOException {
  List<String> inputs = args.getInput();
  List<Path> paths = new ArrayList<>(inputs.size());
  for (String input : inputs) {
    Path p = new Path(input);
    FileSystem fs = p.getFileSystem(conf);
    FileStatus fstat = fs.getFileStatus(p);
    if (fstat.isFile()) {
      paths.add(p);
    } else if (fstat.isDirectory()) {
      for (FileStatus child : fs.listStatus(p)) {
        if (child.isFile()) {
          paths.add(child.getPath());
        }
      }
    } else {
      throw new IllegalStateException("Unable to handle that which is not file nor directory: " + p);
    }
  }
  return paths;
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
public static String findFileAbsPath(String filePath, String target) {
    if (filePath.endsWith("/")) filePath = filePath.substring(0, filePath.length()-1);
    try {
        FileStatus[] status = fs.listStatus(new Path(filePath));
        for (int i = status.length-1; i >= 0; i--) {
            FileStatus file = status[i];
            if (file.isDirectory()) {
                String res = findFileAbsPath(filePath+"/"+file.getPath().getName(), target);
                if (res != null) return res;
            }
            if (file.isFile() && file.getPath().getName().equals(target)) return filePath+"/"+file.getPath().getName();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
public List<Path> listFiles(Path dirPath)
{
    List<Path> files = new ArrayList<>();
    if (!getFS().isPresent()) {
        throw new FileSystemNotFoundException("");
    }
    FileStatus[] fileStatuses = new FileStatus[0];
    try {
        fileStatuses = getFS().get().listStatus(dirPath);
    }
    catch (IOException e) {
        log.error(e);
    }
    for (FileStatus f : fileStatuses) {
        if (f.isFile()) {
            files.add(f.getPath());
        }
    }
    return files;
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
/**
 * Collect the list of <sourceRelativePath, sourceFileStatus> to be copied and write to the sequence file. In essence,
 * any file or directory that need to be copied or sync-ed is written as an entry to the sequence file, with the
 * possible exception of the source root: when either -update (sync) or -overwrite switch is specified, and if the the
 * source root is a directory, then the source root entry is not written to the sequence file, because only the
 * contents of the source directory need to be copied in this case. See
 * {@link com.hotels.bdp.circustrain.s3mapreducecp.util.ConfigurationUtil#getRelativePath} for how relative path is
 * computed. See computeSourceRootPath method for how the root path of the source is computed.
 *
 * @param fileListWriter
 * @param options
 * @param globbedPaths
 * @throws IOException
 */
@VisibleForTesting
public void doBuildListing(SequenceFile.Writer fileListWriter, S3MapReduceCpOptions options) throws IOException {
  List<Path> globbedPaths = new ArrayList<>(options.getSources().size());

  for (Path sourcePath : options.getSources()) {
    FileSystem fs = sourcePath.getFileSystem(getConf());
    FileStatus sourceFileStatus = fs.getFileStatus(sourcePath);
    if (sourceFileStatus.isFile()) {
      LOG.debug("Adding path {}", sourceFileStatus.getPath());
      globbedPaths.add(sourceFileStatus.getPath());
    } else {
      FileStatus[] inputs = fs.globStatus(sourcePath);
      if (inputs != null && inputs.length > 0) {
        for (FileStatus onePath : inputs) {
          LOG.debug("Adding path {}", onePath.getPath());
          globbedPaths.add(onePath.getPath());
        }
      } else {
        throw new InvalidInputException("Source path " + sourcePath + " doesn't exist");
      }
    }
  }
  doBuildListing(fileListWriter, options, globbedPaths);
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
/**
 * Convenience method, so that we don't open a new connection when using this
 * method from within another method. Otherwise every API invocation incurs
 * the overhead of opening/closing a TCP connection.
 */
private boolean delete(FTPClient client, Path file, boolean recursive)
    throws IOException {
  Path workDir = new Path(client.printWorkingDirectory());
  Path absolute = makeAbsolute(workDir, file);
  String pathName = absolute.toUri().getPath();
  try {
    FileStatus fileStat = getFileStatus(client, absolute);
    if (fileStat.isFile()) {
      return client.deleteFile(pathName);
    }
  } catch (FileNotFoundException e) {
    //the file is not there
    return false;
  }
  FileStatus[] dirEntries = listStatus(client, absolute);
  if (dirEntries != null && dirEntries.length > 0 && !(recursive)) {
    throw new IOException("Directory: " + file + " is not empty.");
  }
  for (FileStatus dirEntry : dirEntries) {
    delete(client, new Path(absolute, dirEntry.getPath()), recursive);
  }
  return client.removeDirectory(pathName);
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
private void traverseNonEmptyDirectory(
    SequenceFile.Writer fileListWriter,
    FileStatus sourceStatus,
    Path sourcePathRoot,
    S3MapReduceCpOptions options)
  throws IOException {
  FileSystem sourceFS = sourcePathRoot.getFileSystem(getConf());
  Stack<FileStatus> pathStack = new Stack<>();
  pathStack.push(sourceStatus);

  while (!pathStack.isEmpty()) {
    for (FileStatus child : getChildren(sourceFS, pathStack.pop())) {
      if (child.isFile()) {
        LOG.debug("Recording source-path: {} for copy.", sourceStatus.getPath());
        CopyListingFileStatus childCopyListingStatus = new CopyListingFileStatus(child);
        writeToFileListing(fileListWriter, childCopyListingStatus, sourcePathRoot, options);
      }
      if (isDirectoryAndNotEmpty(sourceFS, child)) {
        LOG.debug("Traversing non-empty source dir: {}", sourceStatus.getPath());
        pathStack.push(child);
      }
    }
  }
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
public void printMessage(String path) {
    System.out.println("\nprint result:");
    DistributedFileSystem distributedFileSystem = distributedFileSystem();
    try {
        FileStatus[] fileStatuses = distributedFileSystem.listStatus(new Path(path));
        for (FileStatus fileStatus : fileStatuses) {
            System.out.println(fileStatus);
            if (fileStatus.isFile()) {
                FSDataInputStream fsDataInputStream = distributedFileSystem.open(fileStatus.getPath());
                byte[] bs = new byte[fsDataInputStream.available()];
                fsDataInputStream.read(bs);
                fsDataInputStream.close();
                System.out.println(new String(bs));
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        close(distributedFileSystem);
    }
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
@Override
protected Callable<FileStatus[]> newMapTask(final String address) throws IOException {
  return new Callable<FileStatus[]>() {
    @Override
    public FileStatus[] call() throws Exception {
      // Only directories should be listed with a fork/join task
      final FileSystem fs = getDelegateFileSystem(address);
      FileStatus status = fs.getFileStatus(path);
      if (status.isFile()) {
        throw new FileNotFoundException("Directory not found: " + path);
      }
      FileStatus[] remoteStatuses = fs.listStatus(path);

      FileStatus[] statuses = new FileStatus[remoteStatuses.length];
      for (int i = 0; i < statuses.length; i++) {
        statuses[i] = fixFileStatus(address, remoteStatuses[i]);
      }

      return statuses;
    }
  };
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
private void validateMapFileOutputContent(
    FileSystem fs, Path dir) throws IOException {
  // map output is a directory with index and data files
  Path expectedMapDir = new Path(dir, partFile);
  assert(fs.getFileStatus(expectedMapDir).isDirectory());    
  FileStatus[] files = fs.listStatus(expectedMapDir);
  int fileCount = 0;
  boolean dataFileFound = false; 
  boolean indexFileFound = false; 
  for (FileStatus f : files) {
    if (f.isFile()) {
      ++fileCount;
      if (f.getPath().getName().equals(MapFile.INDEX_FILE_NAME)) {
        indexFileFound = true;
      }
      else if (f.getPath().getName().equals(MapFile.DATA_FILE_NAME)) {
        dataFileFound = true;
      }
    }
  }
  assert(fileCount > 0);
  assert(dataFileFound && indexFileFound);
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
private boolean mkdir(Path f) throws IOException {
  try {
    FileStatus fileStatus = getFileStatus(f);
    if (fileStatus.isFile()) {
      throw new FileAlreadyExistsException(String.format(
          "Can't make directory for path '%s' since it is a file.", f));

    }
  } catch (FileNotFoundException e) {
    if(LOG.isDebugEnabled()) {
      LOG.debug("Making dir '" + f + "' in S3");
    }
    String key = pathToKey(f) + FOLDER_SUFFIX;
    store.storeEmptyFile(key);    
  }
  return true;
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
public List<String> getExtensions() {
  final List<String> extensions = Lists.newArrayList();
  for (FileStatus fileStatus : statuses) {
    if (fileStatus.isFile()) {
      final String ext = FilenameUtils.getExtension(fileStatus.getPath().getName());
      if (ext != null && !ext.isEmpty()) {
        extensions.add(ext);
      }
    }
  }
  return extensions;
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
private void scanHdfsMember(Path hdfsPath, FileSystem hdfsFS)
        throws FileNotFoundException, IOException {
    FileStatus targetPathStatus = hdfsFS.getFileStatus(hdfsPath);
    if (targetPathStatus.isFile()) {
        fileStatusArry.add(targetPathStatus);
        return;
    }
    FileStatus[] memberArry = hdfsFS.listStatus(hdfsPath);
    for (FileStatus member : memberArry) {
        fileStatusArry.add(member);
        if (member.isDirectory()) {
            scanHdfsMember(member.getPath(), hdfsFS);
        }
    }
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
static void checkFileStatus(ChPermissionStatus expected, FileStatus actual) {
  assertEquals(expected.getUserName(), actual.getOwner());
  assertEquals(expected.getGroupName(), actual.getGroup());
  FsPermission perm = expected.getPermission();
  if (actual.isFile() && expected.defaultPerm) {
    perm = perm.applyUMask(UMASK);
  }
  assertEquals(perm, actual.getPermission());
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
@Override
public Iterable<FileStatus> children(FileStatus root) {
  if (root.isFile()) {
    return ImmutableList.of();
  }
  try {
    FileStatus[] listStatus = fileSystem.listStatus(root.getPath());
    if (listStatus == null || listStatus.length == 0) {
      return ImmutableList.of();
    }
    return ImmutableList.copyOf(listStatus);
  } catch (IOException e) {
    throw new CircusTrainException("Unable to list children for path: " + root.getPath());
  }
}
 

import org.apache.hadoop.fs.FileStatus; //導入方法依賴的package包/類
public static void concat(String dir) throws IOException {


        String directory = NodeConfig.HDFS_PATH + dir;
        Configuration conf = new Configuration();
        DistributedFileSystem fs = (DistributedFileSystem)FileSystem.get(URI.create(directory), conf);
        FileStatus fileList[] = fs.listStatus(new Path(directory));

        if (fileList.length>=2) {

            ArrayList<Path>  srcs = new ArrayList<Path>(fileList.length);
            for (FileStatus fileStatus : fileList) {
                if ( fileStatus.isFile() &&
                        (fileStatus.getLen()&~fileStatus.getBlockSize())<fileStatus.getBlockSize()/2 ) {
                    srcs.add(fileStatus.getPath());
                }
            }

            if (srcs.size()>=2) {
                Logger.println("come to here");
                Path appended = srcs.get(0);
                Path[] sources = new Path[srcs.size()-1];
                for (int i=0; i<srcs.size()-1; i++) {
                    sources[i] = srcs.get(i+1);
                }
                Logger.println(fs==null);
                Logger.println(appended==null);
                Logger.println(sources==null);
                fs.concat(appended, sources);
                Logger.println("concat to : " + appended.getName());
                Logger.println(Arrays.toString(sources));
            }

            fs.close();
        }


    }