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diff --git a/fsa/src/vespa/fsamanagers/metadatamanager.h b/fsa/src/vespa/fsamanagers/metadatamanager.h
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+/**
+ * @author  Peter Boros
+ * @date    2004/10/01
+ * @version $Id$
+ * @file    metadatamanager.h
+ * @brief   Metadata manager class definition.
+ *
+ */
+
+#pragma once
+
+#include <string>
+#include <map>
+
+#include "singleton.h"
+#include "rwlock.h"
+#include "metadatahandle.h"
+
+namespace fsa {
+
+// {{{ class MetaDataManager
+
+/**
+ * @class MetaDataManager
+ * @brief Class for managing generic metadata.
+ *
+ * This class provides a single point of access to all metadata
+ * used by the applications.
+ */
+class MetaDataManager : public Singleton<MetaDataManager> {
+
+protected:
+  friend class Singleton<MetaDataManager>;
+
+  /** Default constructor. Protected to avoid accidental creation */
+  MetaDataManager() : _library(), _lock() {}
+
+private:
+
+  /** Private unimplemented copy constructor */
+  MetaDataManager(const MetaDataManager&);
+  /** Private unimplemented assignment operator */
+  MetaDataManager& operator=(const MetaDataManager&);
+
+  /** %MetaData library type */
+  typedef std::map<std::string,MetaData::Handle*>                  Library;
+  /** %MetaData library iterator type */
+  typedef std::map<std::string,MetaData::Handle*>::iterator        LibraryIterator;
+  /** %MetaData library const iterator type */
+  typedef std::map<std::string,MetaData::Handle*>::const_iterator  LibraryConstIterator;
+
+  Library           _library;    /**< Library of MetaData objects.                 */
+  mutable RWLock    _lock;       /**< Read-write lock for library synchronization. */
+
+public:
+
+  /** Destructor */
+  ~MetaDataManager();
+
+  /**
+   * @brief Load a metadata file into memory.
+   *
+   * @param id MetaData id (to be used in later get() or drop() calls).
+   * @param datafile Metadata file name
+   */
+  bool              load(const std::string &id, const std::string &datafile);
+
+  /**
+   * @brief Get a handle to metadata.
+   *
+   * @param id Metadata id.
+   * @return Newly allocated handle, must be deleted by the
+   *         caller. (NULL if no metadata with the given id was found.)
+   */
+  MetaData::Handle* get(const std::string &id) const;
+
+  /**
+   * @brief Drop a metadata from the library.
+   *
+   * Drop a metadata from the library. The metadata object will
+   * be deleted automagically when there are no more handles referring
+   * to it.
+   *
+   * @param id MetaData id.
+   */
+  void              drop(const std::string &id);
+
+  /**
+   * @brief Drop all metadatas from the library.
+   */
+  void              clear();
+
+};
+
+// }}}
+
+} // namespace fsa
+