ResourceAccountParticipant.h

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#pragma once
#include "common/Export.h"
 
 
#include "common/ResourceAccount.h"
#include "transaction/Transaction.h"
 
#include <cstdint>
#include <string>
#include <string_view>
 
namespace eve::transaction {
 
enum class ResourceDebitState : std::uint8_t {
    Idle,
    Prepared,
    Committed,
    RolledBack,
    Compensated,
};
 
class EVENGINE_API_FOUNDATION ResourceDebitParticipant final : public ITransactionParticipant {
public:
    ResourceDebitParticipant(eve::resource::IResourceAccount& account, eve::resource::CostSpec cost,
                             std::string name = "resource-debit");
 
    ResourceDebitParticipant(const ResourceDebitParticipant&)            = delete;
    ResourceDebitParticipant& operator=(const ResourceDebitParticipant&) = delete;
    ResourceDebitParticipant(ResourceDebitParticipant&&)                 = delete;
    ResourceDebitParticipant& operator=(ResourceDebitParticipant&&)      = delete;
 
    [[nodiscard]] std::string_view name() const noexcept override { return name_; }
 
    [[nodiscard]] eve::Result<void> prepare(const TransactionContext& context) override;
 
    [[nodiscard]] eve::Result<void> commit(const TransactionContext& context) override;
 
    [[nodiscard]] eve::Result<void> rollback(const TransactionContext& context) override;
 
    [[nodiscard]] eve::Result<void> compensate(const TransactionContext& context) override;
 
    [[nodiscard]] ResourceDebitState state() const noexcept { return state_; }
 
private:
    eve::resource::IResourceAccount& account_;
    eve::resource::CostSpec          cost_;
    eve::resource::Reservation       reservation_;
    std::string                      name_;
    ResourceDebitState               state_ = ResourceDebitState::Idle;
};
 
}  // namespace eve::transaction