AggMemberDatasetDimensionCache.h

/*
 * AggMemberDatasetDimensionCache.h
 *
 *  Created on: Sep 25, 2015
 *      Author: ndp
 */
 
#ifndef MODULES_NCML_MODULE_AGGMEMBERDATASETDIMENSIONCACHE_H_
#define MODULES_NCML_MODULE_AGGMEMBERDATASETDIMENSIONCACHE_H_
 
#include "BESFileLockingCache.h"
 
namespace agg_util
{
// Forward declaration
class AggMemberDataset;

class AggMemberDatasetDimensionCache: public BESFileLockingCache
{
private:
    static bool d_enabled;
    static AggMemberDatasetDimensionCache * d_instance;
    static void delete_instance();
 
    std::string d_dimCacheDir;
    std::string d_dataRootDir;
    std::string d_dimCacheFilePrefix;
    unsigned long d_maxCacheSize;
 
    AggMemberDatasetDimensionCache();
 
    bool is_valid(const std::string &cache_file_name, const std::string &dataset_file_name) const;
 
 
    static std::string getBesDataRootDirFromConfig();
    static std::string getCacheDirFromConfig();
    static std::string getDimCachePrefixFromConfig();
    static unsigned long getCacheSizeFromConfig();
 
 
protected:
 
    AggMemberDatasetDimensionCache(const std::string &data_root_dir, const std::string &stored_results_subdir, const std::string &prefix, unsigned long long size);
 
public:
    static const std::string CACHE_DIR_KEY;
    static const std::string PREFIX_KEY;
    static const std::string SIZE_KEY;
 
    static AggMemberDatasetDimensionCache *get_instance(const std::string &bes_catalog_root_dir, const std::string &stored_results_subdir, const std::string &prefix, unsigned long long size);
    static AggMemberDatasetDimensionCache *get_instance();
 
    AggMemberDatasetDimensionCache(const AggMemberDatasetDimensionCache &src) = delete;
 
    void loadDimensionCache(AggMemberDataset *amd);
 
    ~AggMemberDatasetDimensionCache() override = default;
};
 
} /* namespace agg_util */
 
#endif /* MODULES_NCML_MODULE_AGGMEMBERDATASETDIMENSIONCACHE_H_ */