Exemplo n.º 1
0
  /**
   * Populates attribute fields with data from the MasterInfo associated with this servlet. Errors
   * will be displayed in an error field. Debugging can be enabled to display additional data. Will
   * eventually redirect the request to a jsp.
   *
   * @param request The HttpServletRequest object
   * @param response The HttpServletResponse object
   * @throws ServletException
   * @throws IOException
   * @throws UnknownHostException
   */
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException, UnknownHostException {
    request.setAttribute("debug", Constants.DEBUG);

    request.setAttribute("masterNodeAddress", mMasterInfo.getMasterAddress().toString());
    request.setAttribute("invalidPathError", "");
    List<ClientFileInfo> filesInfo = null;
    String currentPath = request.getParameter("path");

    if (currentPath.isEmpty()) {
      currentPath = "/";
    }
    request.setAttribute("currentPath", currentPath);
    try {
      UiFileInfo currentFileInfo = new UiFileInfo(mMasterInfo.getFileInfo(currentPath));
      request.setAttribute("currentDirectory", currentFileInfo);
      if (!currentFileInfo.getIsDirectory()) {
        displayFile(currentFileInfo.getAbsolutePath(), request);
        getServletContext().getRequestDispatcher("/viewFile.jsp").forward(request, response);
        return;
      }
      CommonUtils.validatePath(currentPath);
      setPathDirectories(currentPath, request);
      filesInfo = mMasterInfo.getFilesInfo(currentPath);
    } catch (FileDoesNotExistException fdne) {
      request.setAttribute("invalidPathError", "Error: Invalid Path " + fdne.getMessage());
      getServletContext().getRequestDispatcher("/browse.jsp").forward(request, response);
      return;
    } catch (InvalidPathException ipe) {
      request.setAttribute("invalidPathError", "Error: Invalid Path " + ipe.getLocalizedMessage());
      getServletContext().getRequestDispatcher("/browse.jsp").forward(request, response);
      return;
    }

    List<UiFileInfo> fileInfos = new ArrayList<UiFileInfo>(filesInfo.size());
    for (ClientFileInfo fileInfo : filesInfo) {
      UiFileInfo toAdd = new UiFileInfo(fileInfo);
      try {
        if (!toAdd.getIsDirectory()) {
          toAdd.setFileLocations(mMasterInfo.getFileLocations(toAdd.getId()));
        }
      } catch (FileDoesNotExistException fdne) {
        request.setAttribute("invalidPathError", "Error: Invalid Path " + fdne.getMessage());
        getServletContext().getRequestDispatcher("/browse.jsp").forward(request, response);
        return;
      }
      fileInfos.add(toAdd);
    }
    Collections.sort(fileInfos);
    request.setAttribute("fileInfos", fileInfos);

    getServletContext().getRequestDispatcher("/browse.jsp").forward(request, response);
  }
Exemplo n.º 2
0
  /**
   * This function displays the first 5KB of a file if it is in ASCII format.
   *
   * @param path The path of the file to display
   * @param request The HttpServletRequest object
   * @throws FileDoesNotExistException
   * @throws IOException
   * @throws InvalidPathException
   * @throws TException
   */
  private void displayFile(String path, HttpServletRequest request)
      throws FileDoesNotExistException, InvalidPathException, IOException {
    TachyonClient tachyonClient = TachyonClient.getClient(mMasterInfo.getMasterAddress());
    TachyonFile tFile = tachyonClient.getFile(path);
    if (tFile == null) {
      throw new FileDoesNotExistException(path);
    }

    InStream is = tFile.getInStream(OpType.READ_NO_CACHE);
    int len = Math.min(5 * Constants.KB, (int) tFile.getSize());
    byte[] data = new byte[len];
    is.read(data, 0, len);
    String fileData = CommonUtils.convertByteArrayToString(data);
    if (fileData == null) {
      fileData = "The requested file is not completely encoded in ascii";
    }
    is.close();

    try {
      tachyonClient.close();
    } catch (TException e) {
      LOG.error(e.getMessage());
    }
    request.setAttribute("fileData", fileData);
    return;
  }
Exemplo n.º 3
0
  /**
   * This function sets the fileinfos for folders that are in the path to the current directory.
   *
   * @param path The path of the current directory.
   * @param request The HttpServletRequest object
   * @throws FileDoesNotExistException
   * @throws InvalidPathException
   */
  private void setPathDirectories(String path, HttpServletRequest request)
      throws FileDoesNotExistException, InvalidPathException {
    if (path.equals(Constants.PATH_SEPARATOR)) {
      request.setAttribute("pathInfos", new UiFileInfo[0]);
      return;
    }

    String[] splitPath = path.split(Constants.PATH_SEPARATOR);
    UiFileInfo[] pathInfos = new UiFileInfo[splitPath.length - 1];
    String currentPath = Constants.PATH_SEPARATOR;
    pathInfos[0] = new UiFileInfo(mMasterInfo.getFileInfo(currentPath));
    for (int i = 1; i < splitPath.length - 1; i++) {
      currentPath = currentPath + splitPath[i];
      pathInfos[i] = new UiFileInfo(mMasterInfo.getFileInfo(currentPath));
      currentPath = currentPath + Constants.PATH_SEPARATOR;
    }
    request.setAttribute("pathInfos", pathInfos);
    return;
  }