key_value_storage.hpp

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#ifndef IROHA_KV_STORAGE_HPP
#define IROHA_KV_STORAGE_HPP

#include <boost/optional.hpp>
#include <string>
#include <vector>

namespace iroha {

  namespace ametsuchi {

    class KeyValueStorage {
     public:
      using Identifier = uint32_t;
      using Bytes = std::vector<uint8_t>;

      virtual bool add(Identifier id, const Bytes &blob) = 0;

      virtual boost::optional<Bytes> get(Identifier id) const = 0;

      virtual std::string directory() const = 0;

      virtual Identifier last_id() const = 0;

      virtual void reload() = 0;

      virtual void dropAll() = 0;

      virtual ~KeyValueStorage() = default;
    };
  }  // namespace ametsuchi
}  // namespace iroha

#endif  // IROHA_KV_STORAGE_HPP