How to use

CachedStreamInput

in

org.elasticsearch.common.io.stream

public static Map<String, Object> sourceAsMap(byte[] bytes, int offset,
                       int length, boolean unsafe) {
  XContentParser parser = null;
  try {
    if (isCompressed(bytes, offset, length)) {
      BytesStreamInput siBytes = new BytesStreamInput(bytes, offset,
          length, unsafe);
      HandlesStreamInput siLzf = CachedStreamInput
          .cachedHandles(siBytes);
      XContentType contentType = XContentFactory.xContentType(siLzf);
      siLzf.reset();
      parser = XContentFactory.xContent(contentType).createParser(
          siLzf);
      return parser.map();
    } else {
      parser = XContentFactory.xContent(bytes, offset, length)
          .createParser(bytes, offset, length);
      return parser.map();
    }
  } catch (Exception e) {
    throw new ElasticsearchParseException(
        "Failed to parse source to map", e);
  } finally {
    if (parser != null) {
      parser.close();
    }
  }
}

public static Map<String, Object> sourceAsMap(byte[] bytes, int offset,
                       int length) {
  XContentParser parser = null;
  try {
    if (isCompressed(bytes, offset, length)) {
      BytesStreamInput siBytes = new BytesStreamInput(bytes, offset,
          length, true);
      HandlesStreamInput siLzf = CachedStreamInput
          .cachedHandles(siBytes);
      XContentType contentType = XContentFactory.xContentType(siLzf);
      siLzf.reset();
      parser = XContentFactory.xContent(contentType).createParser(
          siLzf);
      return parser.map();
    } else {
      parser = XContentFactory.xContent(bytes, offset, length)
          .createParser(bytes, offset, length);
      return parser.map();
    }
  } catch (Exception e) {
    throw new ElasticsearchParseException(
        "Failed to parse source to map", e);
  } finally {
    if (parser != null) {
      parser.close();
    }
  }
}

StreamInput wrappedStream = CachedStreamInput.cachedHandles(streamIn);