delayed_schedule.h

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#ifndef MYSQL_SCHEDULER_DELAYED_SCHEDULE_H
#define MYSQL_SCHEDULER_DELAYED_SCHEDULE_H
 
#include <chrono>
#include <iostream>
#include <memory>
#include <string>
 
#include "mysql/scheduler/task_id.h"
#include "mysql/scheduler/task_schedule.h"
#include "mysql/scheduler/time.h"
 
namespace mysql::scheduler {
 
/// @class Delayed_schedule
/// @brief Represents Schedule for one-shot, delayed task
class Delayed_schedule : public Task_schedule {
 public:
  /// @brief Constructor
  /// @details constructs schedule with delay us from the clock start point
  /// @param task_id Task identifier
  /// @param clock Scheduler clock
  /// @param delay Delay in microseconds
  Delayed_schedule(Task_id task_id, Scheduler_clock_ptr clock, uint64_t delay);
 
  /// @brief This function modifies the state of the schedule to next state
  /// @returns false - Task is one-shot task, won't be executed in the future
  bool next() override;
 
  /// @brief Gets information about next execution time
  /// @returns Current phase task delay
  const Time_delay_type &get_task_delay() const override;
 
  bool is_finished() const override { return true; }
 
  /// @brief Obtain task clock
  const Scheduler_clock_ptr &get_clock() const override;
 
  /// @brief Obtain task id
  const Task_id &get_id() const override;
 
 protected:
 private:
  /// This task id
  Task_id m_task_id;
  /// Clock this schedule is based on
  Scheduler_clock_ptr m_clock;
  /// Delay since clock start point
  uint64_t m_task_delay;
};
 
}  // namespace mysql::scheduler
 
#endif  // MYSQL_SCHEDULER_DELAYED_SCHEDULE_H