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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 Michael Sevilla <mikesevilla3@gmail.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#ifndef CEPH_MANTLE_H
+#define CEPH_MANTLE_H
+
+#include <string_view>
+
+#include <lua.hpp>
+#include <vector>
+#include <map>
+#include <string>
+
+#include "mdstypes.h"
+
+class Mantle {
+ public:
+ Mantle();
+ ~Mantle() { if (L) lua_close(L); }
+ int balance(std::string_view script,
+ mds_rank_t whoami,
+ const std::vector <std::map<std::string, double>> &metrics,
+ std::map<mds_rank_t,double> &my_targets);
+
+ protected:
+ lua_State *L;
+};
+
+#endif