block_storage.hpp

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#ifndef IROHA_BLOCK_STORAGE_HPP
#define IROHA_BLOCK_STORAGE_HPP

#include <boost/optional/optional_fwd.hpp>
#include <cstdint>
#include <functional>
#include <memory>

#include "common/result_fwd.hpp"
#include "interfaces/iroha_internal/block.hpp"

namespace iroha {
  namespace ametsuchi {

    class BlockStorage {
     public:
      virtual bool insert(
          std::shared_ptr<const shared_model::interface::Block> block) = 0;

      virtual boost::optional<std::unique_ptr<shared_model::interface::Block>>
      fetch(shared_model::interface::types::HeightType height) const = 0;

      virtual size_t size() const = 0;

      virtual void reload() = 0;

      virtual void clear() = 0;

      using FunctionType = std::function<expected::Result<void, std::string>(
          std::shared_ptr<const shared_model::interface::Block>)>;

      virtual expected::Result<void, std::string> forEach(
          FunctionType function) const = 0;

      virtual ~BlockStorage() = default;
    };

  }  // namespace ametsuchi
}  // namespace iroha

#endif  // IROHA_BLOCK_STORAGE_HPP