batch_meta.hpp

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#ifndef IROHA_PROTO_BATCH_META_HPP
#define IROHA_PROTO_BATCH_META_HPP

#include "interfaces/iroha_internal/batch_meta.hpp"

#include <boost/range/adaptor/transformed.hpp>
#include "cryptography/hash.hpp"
#include "interfaces/common_objects/types.hpp"
#include "transaction.pb.h"

namespace shared_model {
  namespace proto {
    class BatchMeta final : public interface::BatchMeta {
     public:
      explicit BatchMeta(
          iroha::protocol::Transaction::Payload::BatchMeta &batch_meta)
          : batch_meta_{batch_meta},
            type_{[this] {
              unsigned which = batch_meta_.GetDescriptor()
                                   ->FindFieldByName("type")
                                   ->enum_type()
                                   ->FindValueByNumber(batch_meta_.type())
                                   ->index();
              return static_cast<interface::types::BatchType>(which);
            }()},
            reduced_hashes_{boost::copy_range<ReducedHashesType>(
                batch_meta.reduced_hashes()
                | boost::adaptors::transformed([](const auto &hash) {
                    return crypto::Hash::fromHexString(hash);
                  }))} {}

      interface::types::BatchType type() const override {
        return type_;
      }

      const ReducedHashesType &reducedHashes() const override {
        return reduced_hashes_;
      }

     private:
      const iroha::protocol::Transaction::Payload::BatchMeta &batch_meta_;

      interface::types::BatchType type_;

      const ReducedHashesType reduced_hashes_;
    };
  }  // namespace proto
}  // namespace shared_model
#endif  // IROHA_PROTO_BATCH_META_HPP