gcs_xcom_statistics_manager.h

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/* Copyright (c) 2023, 2024, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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#ifndef GCS_XCOM_STATISTICS_MANAGER_INCLUDED
#define GCS_XCOM_STATISTICS_MANAGER_INCLUDED
 
#include "plugin/group_replication/libmysqlgcs/include/mysql/gcs/gcs_statistics_interface.h"
 
#include <map>
#include <vector>
 
/**
 * @brief Enumerate that identifies all counter statistics.
 */
enum Gcs_counter_statistics_enum : int {
  kSucessfulProposalRounds = 0,  // get_all_sucessful_proposal_rounds
  kEmptyProposalRounds,          // get_all_empty_proposal_rounds
  kFullProposalCount,            // get_all_full_proposal_count
  kMessagesSent,                 // get_all_messages_sent
  kGcsCounterStatisticsEnumEnd
};
 
/**
 * @brief Enumerate that identifies all cumulative statistics.
 */
enum Gcs_cumulative_statistics_enum : int {
  kBytesSent = 0,         // get_all_bytes_sent
  kMessageBytesReceived,  // get_all_message_bytes_received
  kGcsCumulativeStatisticsEnumEnd
};
 
/**
 * @brief Enumerate that identifies all time statistics.
 */
enum Gcs_time_statistics_enum : int {
  kCumulativeProposalTime = 0,  // cumulative_proposal_time
  kLastProposalRoundTime,       // last_proposal_round_time
  kGcsTimeStatisticsEnumEnd
};
 
/**
 * @brief This class is the storage and provider of all statistics coming
 * from either XCom and GCS.
 */
class Gcs_xcom_statistics_manager_interface {
 public:
  Gcs_xcom_statistics_manager_interface() = default;
  virtual ~Gcs_xcom_statistics_manager_interface() = default;
 
  // SUM VARS
  /**
   * @brief Get the value of a provided statistic which is of a cumulative
   * nature.
   *
   * @param to_get The statistic to get.
   *
   * @return uint64_t the value of the statistic
   */
  virtual uint64_t get_sum_var_value(
      Gcs_cumulative_statistics_enum to_get) const = 0;
 
  /**
   * @brief Sets the value of a provided statistic which is of a cumulative
   * nature.
   *
   * @param to_set The statistic to add.
   * @param to_add The value to add to the provided statistic.
   */
  virtual void set_sum_var_value(Gcs_cumulative_statistics_enum to_set,
                                 uint64_t to_add) = 0;
 
  // COUNT VARS
  /**
   * @brief Get the value of a provided statistic which is of a discrete growth
   * nature.
   *
   * @param to_get The statistic to get.
   *
   * @return uint64_t the value of the statistic
   */
  virtual uint64_t get_count_var_value(
      Gcs_counter_statistics_enum to_get) const = 0;
 
  /**
   * @brief Sets the value of a provided statistic which is of a discrete growth
   * nature. It always adds "+1" to the current value.
   *
   * @param to_set The statistic to add.
   */
  virtual void set_count_var_value(Gcs_counter_statistics_enum to_set) = 0;
 
  // TIMESTAMP VALUES
  /**
   * @brief Get the value of a provided statistic which is a timestamp.
   *
   * @param to_get The statistic to set.
   *
   * @return unsigned long long The timestamp value of that statistic.
   */
  virtual unsigned long long get_timestamp_var_value(
      Gcs_time_statistics_enum to_get) const = 0;
 
  /**
   * @brief Sets the value of a provided timestamp statistic which is of a
   * certain specific value.
   *
   * @param to_set The statistic to set.
   * @param new_value The new value of that statistic.
   */
  virtual void set_timestamp_var_value(Gcs_time_statistics_enum to_set,
                                       unsigned long long new_value) = 0;
 
  /**
   * @brief Sets the value of a provided timestamp statistic which is of a
   * cumulative nature.
   *
   * @param to_set The statistic to add.
   * @param to_add The value to add to the provided statistic.
   */
  virtual void set_sum_timestamp_var_value(Gcs_time_statistics_enum to_set,
                                           unsigned long long to_add) = 0;
 
  // ALL OTHER VARS
  /**
   * @brief Get all suspicious seen by this node.
   *
   * @return std::vector<Gcs_node_suspicious> a vector containing all suspicious
   *                                          seen by this local node
   */
  virtual std::vector<Gcs_node_suspicious> get_all_suspicious() const = 0;
 
  /**
   * @brief Adds a suspicious count for a provided node.
   *
   * @param node_id The node identifier to add a suspicious. It must be in
   *                address:port format as provided by
   *                @see Gcs_member_identifier
   */
  virtual void add_suspicious_for_a_node(std::string node_id) = 0;
};
 
class Gcs_xcom_statistics_manager_interface_impl
    : public Gcs_xcom_statistics_manager_interface {
 public:
  Gcs_xcom_statistics_manager_interface_impl()
      : m_sum_statistics(kGcsCumulativeStatisticsEnumEnd),
        m_count_statistics(kGcsCounterStatisticsEnumEnd),
        m_time_statistics(kGcsTimeStatisticsEnumEnd) {}
 
  virtual ~Gcs_xcom_statistics_manager_interface_impl() override = default;
 
  // SUM VARS
  /**
   * @see Gcs_xcom_statistics_manager_interface::get_sum_var_value
   */
  uint64_t get_sum_var_value(
      Gcs_cumulative_statistics_enum to_get) const override;
 
  /**
   * @see Gcs_xcom_statistics_manager_interface::set_sum_var_value
   */
  void set_sum_var_value(Gcs_cumulative_statistics_enum to_set,
                         uint64_t to_add) override;
 
  // COUNT VARS
  /**
   * @see Gcs_xcom_statistics_manager_interface::get_count_var_value
   */
  uint64_t get_count_var_value(
      Gcs_counter_statistics_enum to_get) const override;
 
  /**
   * @see Gcs_xcom_statistics_manager_interface::set_count_var_value
   */
  void set_count_var_value(Gcs_counter_statistics_enum to_set) override;
 
  // TIMESTAMP VALUES
  /**
   * @see Gcs_xcom_statistics_manager_interface::get_timestamp_var_value
   */
  unsigned long long get_timestamp_var_value(
      Gcs_time_statistics_enum to_get) const override;
 
  /**
   * @see Gcs_xcom_statistics_manager_interface::set_timestamp_var_value
   */
  void set_timestamp_var_value(Gcs_time_statistics_enum to_set,
                               unsigned long long new_value) override;
 
  /**
   * @see Gcs_xcom_statistics_manager_interface::set_sum_timestamp_var_value
   */
  void set_sum_timestamp_var_value(Gcs_time_statistics_enum to_set,
                                   unsigned long long to_add) override;
 
  // ALL OTHER VARS
  /**
   * @see Gcs_xcom_statistics_manager_interface::get_all_suspicious
   */
  std::vector<Gcs_node_suspicious> get_all_suspicious() const override;
 
  /**
   * @see Gcs_xcom_statistics_manager_interface::add_suspicious_for_a_node
   */
  void add_suspicious_for_a_node(std::string node_id) override;
 
 private:
  std::vector<uint64_t> m_sum_statistics;
  std::vector<uint64_t> m_count_statistics;
  std::vector<unsigned long long> m_time_statistics;
  std::map<std::string, uint64_t> m_suspicious_statistics;
};
 
#endif /* GCS_XCOM_STATISTICS_MANAGER_INCLUDED*/