block_query.hpp

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#ifndef IROHA_BLOCK_QUERY_HPP
#define IROHA_BLOCK_QUERY_HPP

#include <optional>

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

namespace iroha {

  namespace ametsuchi {
    class BlockQuery {
     public:
      struct GetBlockError {
        enum class Code {
          kNoBlock,
          kInternalError,
        };
        Code code;
        std::string message;
      };

      using BlockResult =
          expected::Result<std::unique_ptr<shared_model::interface::Block>,
                           GetBlockError>;

      virtual ~BlockQuery() = default;

      virtual BlockResult getBlock(
          shared_model::interface::types::HeightType height) = 0;

      virtual shared_model::interface::types::HeightType
      getTopBlockHeight() = 0;

      virtual void reloadBlockstore() = 0;

      virtual std::optional<TxCacheStatusType> checkTxPresence(
          const shared_model::crypto::Hash &hash) = 0;
    };
  }  // namespace ametsuchi
}  // namespace iroha

#endif  // IROHA_BLOCK_QUERY_HPP