Storage.h

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/*
 * Copyright (C) 1996-2019 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */

#ifndef SQUID_STORE_STORAGE_H
#define SQUID_STORE_STORAGE_H

#include "base/RefCount.h"
#include "http/RequestMethod.h"
#include "store/forward.h"
#include "store_key_md5.h"

class StoreInfoStats;

namespace Store {

class Storage: public RefCountable
{
public:
    virtual ~Storage() {}

    virtual void create() = 0;

    virtual void init() = 0;

    virtual uint64_t maxSize() const = 0;

    virtual uint64_t minSize() const = 0;

    virtual uint64_t currentSize() const = 0;

    virtual uint64_t currentCount() const = 0;

    virtual int64_t maxObjectSize() const = 0;

    virtual void getStats(StoreInfoStats &stats) const = 0;

    virtual void stat(StoreEntry &e) const = 0;

    virtual void evictCached(StoreEntry &e) = 0;

    virtual void evictIfFound(const cache_key *) = 0;

    virtual int callback() { return 0; }

    virtual void maintain() = 0;

    virtual void sync() {}
};

} // namespace Store

#endif /* SQUID_STORE_STORAGE_H */