@Override
public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
DeleteByQueryRequest deleteByQueryRequest = new DeleteByQueryRequest(Strings.splitStringByCommaToArray(request.param("index")));
deleteByQueryRequest.listenerThreaded(false);
if (request.hasContent()) {
deleteByQueryRequest.source(request.content(), request.contentUnsafe());
} else {
String source = request.param("source");
if (source != null) {
deleteByQueryRequest.source(source);
} else {