cluster_order.hpp

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#ifndef IROHA_CLUSTER_ORDER_HPP
#define IROHA_CLUSTER_ORDER_HPP

#include <memory>
#include <optional>
#include <vector>

#include "consensus/yac/yac_types.hpp"
#include "interfaces/common_objects/types.hpp"

namespace iroha::consensus::yac {
  class ClusterOrdering {
   public:
    static std::optional<ClusterOrdering> create(
        std::vector<std::shared_ptr<shared_model::interface::Peer>> const
            &order,
        std::vector<size_t> const &peer_positions);

    static std::optional<ClusterOrdering> create(
        std::vector<std::shared_ptr<shared_model::interface::Peer>> const
            &order);

    const shared_model::interface::Peer &currentLeader();

    ClusterOrdering &switchToNext();

    bool hasNext() const;

    const shared_model::interface::types::PeerList &getPeers() const;

    PeersNumberType getNumberOfPeers() const;

    virtual ~ClusterOrdering() = default;

    ClusterOrdering() = delete;

   private:
    // prohibit creation of the object not from create method
    explicit ClusterOrdering(
        std::vector<std::shared_ptr<shared_model::interface::Peer>> const
            &order,
        std::vector<size_t> const &peer_positions);

    explicit ClusterOrdering(
        std::vector<std::shared_ptr<shared_model::interface::Peer>> const
            &order);

    std::vector<std::shared_ptr<shared_model::interface::Peer>> order_;
    PeersNumberType index_ = 0;
  };
}  // namespace iroha::consensus::yac

#endif  // IROHA_CLUSTER_ORDER_HPP