BESCache3.h

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// BESCache3.h

// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.

// Copyright (c) 2014 OPeNDAP, Inc
// Author: James Gallagher <jgallagher@opendap.org>,
// Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301

#ifndef BESCache3_h_
#define BESCache3_h_ 1

#include <string>

#include "BESFileLockingCache.h"
#include "BESDebug.h"

class BESKeys;

class BESCache3: public BESFileLockingCache {

private:
        static BESCache3 * d_instance;

protected:
    BESCache3(): BESFileLockingCache() {}
    BESCache3(const string &cache_dir, const string &prefix, unsigned long size) :
        BESFileLockingCache(cache_dir, prefix, size) {}
    BESCache3(BESKeys *keys, const string &cache_dir_key, const string &prefix_key, const string &size_key);

public:
    virtual ~BESCache3() { }

    static BESCache3 *get_instance(BESKeys *keys, const string &cache_dir_key, const string &prefix_key, const string &size_key);
    static BESCache3 *get_instance(const string &cache_dir, const string &prefix, unsigned long size); // Testing
    static BESCache3 *get_instance();

    virtual void dump(ostream &strm) const ;
};

#endif // BESCache3_h_