dummy_worker_metrics.h

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#ifndef CHANGESTREAMS_APPLY_METRICS_DUMMY_WORKER_METRICS_H
#define CHANGESTREAMS_APPLY_METRICS_DUMMY_WORKER_METRICS_H
 
#include <cstdint>  // int64_t
#include "time_based_metric_stub.h"
#include "worker_metrics.h"
 
namespace cs::apply::instruments {
 
/// @brief Class that intends to be a dummy end point for worker metrics
class Dummy_worker_metrics : public Worker_metrics {
 public:
  Dummy_worker_metrics() = default;
 
  // disable copy assignment operator and the copy constructor
  Dummy_worker_metrics &operator=(const Dummy_worker_metrics &other) = delete;
  Dummy_worker_metrics(const Dummy_worker_metrics &other) = delete;
 
  /// @brief Resets the instruments on this instance.
  void reset() override;
 
  /// @brief Returns the type of the currently being processed transaction
  /// @return If the type is unknown, DML or DDL
  Worker_metrics::Transaction_type_info get_transaction_type() const override;
 
  /// @brief Set the type for the transaction being currently processed
  /// @param type_info what is the type: UNKONWN, DML or DDL
  void set_transaction_type(Transaction_type_info type_info) override;
 
  /// @brief set the full size of the ongoing transaction.
  /// @param amount new size
  void set_transaction_ongoing_full_size(int64_t amount) override;
 
  /// @brief Gets the full size of the ongoing transaction
  /// @return the total size of the ongoing transaction
  int64_t get_transaction_ongoing_full_size() const override;
 
  /// @brief increment the executed size of the ongoing transaction.
  /// @param amount the size amount to increment.
  void inc_transaction_ongoing_progress_size(int64_t amount) override;
 
  /// @brief Resets the the executed size of the ongoing transaction to 0
  void reset_transaction_ongoing_progress_size() override;
 
  /// @brief Gets the executed size of the ongoing transaction
  /// @return the exectuted size of the ongoing transaction
  int64_t get_transaction_ongoing_progress_size() const override;
 
  /// @brief Gets the total time waited on commit order
  /// @return the sum of the time waited on commit
  Time_based_metric_interface &get_waits_due_to_commit_order() override;
 
 private:
  /// Stub to return from @c get_waits_due_to_commit_order
  Time_based_metric_stub m_waits_due_to_commit_order;
};
}  // namespace cs::apply::instruments
 
#endif /* CHANGESTREAMS_APPLY_METRICS_DUMMY_WORKER_METRICS_H */