ordering_service_proposal_creation_strategy.hpp

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#ifndef IROHA_ORDERING_SERVICE_PROPOSAL_CREATION_STRATEGY_HPP
#define IROHA_ORDERING_SERVICE_PROPOSAL_CREATION_STRATEGY_HPP

#include <boost/optional.hpp>
#include "consensus/round.hpp"

namespace iroha {
  namespace ordering {

    class ProposalCreationStrategy {
     public:
      using RoundType = consensus::Round;

      virtual void onCollaborationOutcome(RoundType round,
                                          size_t peers_in_round) = 0;

      virtual bool shouldCreateRound(RoundType round) = 0;

      virtual boost::optional<RoundType> onProposalRequest(
          RoundType requested_round) = 0;

      virtual ~ProposalCreationStrategy() = default;
    };
  }  // namespace ordering
}  // namespace iroha

#endif  // IROHA_ORDERING_SERVICE_PROPOSAL_CREATION_STRATEGY_HPP