How to use

cleanup

method

in

org.apache.zookeeper.common.IOUtils

/**
 * Closes the stream ignoring {@link IOException}. Must only be called in
 * cleaning up from exception handlers.
 * 
 * @param stream
 *            the Stream to close
 */
public static void closeStream(Closeable stream) {
  cleanup(null, stream);
}

/**
 * Closes the stream ignoring {@link IOException}. Must only be called in
 * cleaning up from exception handlers.
 * 
 * @param stream
 *            the Stream to close
 */
public static void closeStream(Closeable stream) {
  cleanup(null, stream);
}

  public static byte[] serializeRequest(Request request) {
    if (request == null || request.getHdr() == null) return null;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    BinaryOutputArchive boa = BinaryOutputArchive.getArchive(baos);
    try {
      request.getHdr().serialize(boa, "hdr");
      if (request.getTxn() != null) {
        request.getTxn().serialize(boa, "txn");
      }
    } catch (IOException e) {
      LOG.error("This really should be impossible", e);
    } finally {
      IOUtils.cleanup(LOG, baos);
    }
    return baos.toByteArray();
  }
}