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/*
Copyright (c) 2015, 2025, 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.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef ABSTRACT_PROGRESS_WATCHER_INCLUDED
#define ABSTRACT_PROGRESS_WATCHER_INCLUDED
#include <atomic>
#include <chrono>
#include <functional>
#include "client/dump/abstract_chain_element.h"
#include "client/dump/i_progress_watcher.h"
#include "my_inttypes.h"
namespace Mysql {
namespace Tools {
namespace Dump {
/**
Gathers information about progress of current dump progress and format
messages on progress.Also it should expose API for receiving processed
progress information: collected objects and rows information along with time
elapsed, ETA.
*/
class Abstract_progress_watcher : public virtual I_progress_watcher,
public Abstract_chain_element {
public:
void new_chain_created(Item_processing_data *new_chain_process_data) override;
void object_processing_started(Item_processing_data *process_data) override;
void object_processing_ended(
Item_processing_data *finished_process_data) override;
void crawler_completed(I_crawler *crawler) override;
// Fix "inherits ... via dominance" warnings
void register_progress_watcher(
I_progress_watcher *new_progress_watcher) override {
Abstract_chain_element::register_progress_watcher(new_progress_watcher);
}
// Fix "inherits ... via dominance" warnings
uint64 get_id() const override { return Abstract_chain_element::get_id(); }
protected:
Abstract_progress_watcher(
std::function<bool(const Mysql::Tools::Base::Message_data &)>
*message_handler,
Simple_id_generator *object_id_generator);
class Progress_data {
public:
Progress_data();
Progress_data(const Progress_data &to_copy);
Progress_data &operator=(const Progress_data &to_copy);
Progress_data operator-(const Progress_data &to_subtract);
std::atomic<uint64_t> m_table_count;
std::atomic<uint64_t> m_row_data;
std::atomic<uint64_t> m_row_count;
};
virtual void process_progress_step(Progress_data &change) = 0;
Progress_data m_total;
Progress_data m_progress;
Progress_data m_last_progress;
// Fix "inherits ... via dominance" warnings
void item_completion_in_child_callback(
Item_processing_data *item_processed) override {
Abstract_chain_element::item_completion_in_child_callback(item_processed);
}
private:
/**
Throttles progress changes to be reported to progress_changed() about 1 in
second. It uses 10 stages, each 100ms long, in each there is number of
iterations to prevent calling std::chrono::system_clock::now() on each
function call.
*/
void progress_changed();
static const int STAGES = 10;
static const int REPORT_DELAY_MS = 1000;
std::chrono::system_clock::time_point m_last_stage_time;
std::atomic<int64_t> m_step_countdown;
std::atomic<int64_t> m_stage_countdown;
int64 m_last_step_countdown;
};
} // namespace Dump
} // namespace Tools
} // namespace Mysql
#endif
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