mta_worker_metrics.h

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/*
   Copyright (c) 2024, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License, version 2.0, for more details.
 
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   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef CS_MTA_WORKER_METRICS_H
#define CS_MTA_WORKER_METRICS_H
#include <atomic>
#include "worker_metrics.h"
 
namespace cs::apply::instruments {
 
/// @brief This class contains metrics transaction
/// execution in replica MTA workers
class Mta_worker_metrics : public Worker_metrics {
 public:
  /// @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 Copies stats from the given object into this one.
  /// @param other the object to copy the stats from.
  void copy_stats_from(const Mta_worker_metrics &other);
 
  /// @brief Gets the total time waited on commit order
  /// @return the sum of the time waited on commit
  int64_t get_wait_time_on_commit_order() const override;
 
  /// @brief Increments the number of times waited
  void inc_waited_time_on_commit_order(unsigned long amount) override;
 
  /// @brief Get the number of time waiting on commit order
  /// @return the counter of waits on commit order
  int64_t get_number_of_waits_on_commit_order() const override;
 
  /// @brief Increments the number of times waited
  void inc_number_of_waits_on_commit_order() override;
 
 private:
  /// @brief The type of the transactions being handled
  std::atomic<Transaction_type_info> m_transaction_type{
      Transaction_type_info::UNKNOWN};
 
  /// @brief The number of time waited for commit order
  std::atomic_int64_t m_order_commit_wait_count{0};
 
  /// @brief The total amount of time waited for commit order
  std::atomic_int64_t m_order_commit_waited_time{0};
 
  /// @brief Holds the total full size of the transaction now ongoing
  std::atomic_int64_t m_transaction_ongoing_full_size{0};
 
  /// @brief Holds the executed event's size of the transaction now ongoing
  std::atomic_int64_t m_transaction_ongoing_progress_size{0};
};
}  // namespace cs::apply::instruments
 
#endif /* CS_MTA_WORKER_METRICS_H */