initial code repo

[stor4nfv.git] / src / ceph / src / rbd_replay / ImageNameMap.hpp

diff --git a/src/ceph/src/rbd_replay/ImageNameMap.hpp b/src/ceph/src/rbd_replay/ImageNameMap.hpp
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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) 2014 Adam Crume <adamcrume@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 _INCLUDED_RBD_REPLAY_IMAGENAMEMAP_HPP
+#define _INCLUDED_RBD_REPLAY_IMAGENAMEMAP_HPP
+
+#include <map>
+#include <string>
+#include "rbd_loc.hpp"
+
+namespace rbd_replay {
+
+/**
+   Maps image names.
+ */
+class ImageNameMap {
+public:
+  typedef std::pair<rbd_loc, rbd_loc> Mapping;
+
+  /**
+     Parses a mapping.
+     If parsing fails, the contents of \c mapping are undefined.
+     @param[in] mapping_string string representation of the mapping
+     @param[out] mapping stores the parsed mapping
+     @retval true parsing was successful
+   */
+  bool parse_mapping(std::string mapping_string, Mapping *mapping) const;
+
+  void add_mapping(const Mapping& mapping);
+
+  /**
+     Maps an image name.
+     If no mapping matches the name, it is returned unmodified.
+   */
+  rbd_loc map(const rbd_loc& name) const;
+
+private:
+  std::map<rbd_loc, rbd_loc> m_map;
+};
+
+}
+
+#endif