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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
*/
#include "client/dump/mysqldump_tool_chain_maker.h"
#include <stddef.h>
#include <boost/algorithm/string.hpp>
#include <functional>
#include "client/dump/compression_lz4_writer.h"
#include "client/dump/compression_zlib_writer.h"
#include "client/dump/file_writer.h"
#include "client/dump/i_output_writer.h"
#include "client/dump/mysqldump_tool_chain_maker_options.h"
#include "client/dump/sql_formatter.h"
#include "client/dump/standard_writer.h"
#include "client/dump/view.h"
#include "m_ctype.h"
using namespace Mysql::Tools::Dump;
using std::placeholders::_1;
void Mysqldump_tool_chain_maker::delete_chain(uint64, I_object_reader *) {}
I_object_reader *Mysqldump_tool_chain_maker::create_chain(
Chain_data *, I_dump_task *dump_task) {
Table_rows_dump_task *rows_task =
dynamic_cast<Table_rows_dump_task *>(dump_task);
if (rows_task != nullptr &&
(m_options->m_skip_rows_data ||
rows_task->get_related_table()->get_type() == "FEDERATED" ||
rows_task->get_related_table()->get_type() == "MRG_ISAM" ||
!this->compare_no_case_latin_with_db_string(
"MRG_MyISAM", rows_task->get_related_table()->get_type()))) {
return nullptr;
}
if (!m_options->is_object_included_in_dump(
dynamic_cast<Abstract_data_object *>(
dump_task->get_related_db_object()))) {
return nullptr;
}
if (m_main_object_reader == nullptr) {
I_output_writer *writer;
if (m_options->m_result_file.has_value())
writer = new File_writer(this->get_message_handler(),
this->get_object_id_generator(),
m_options->m_result_file.value());
else
writer = new Standard_writer(this->get_message_handler(),
this->get_object_id_generator());
if (writer->init()) {
delete writer;
return nullptr;
}
m_all_created_elements.push_back(writer);
if (m_options->m_compress_output_algorithm.has_value()) {
std::string algorithm_name =
m_options->m_compress_output_algorithm.value();
boost::to_lower(algorithm_name);
Abstract_output_writer_wrapper *compression_writer_as_wrapper = nullptr;
I_output_writer *compression_writer_as_writer = nullptr;
if (algorithm_name == "lz4") {
Compression_lz4_writer *compression_writer = new Compression_lz4_writer(
this->get_message_handler(), this->get_object_id_generator());
if (compression_writer->init()) {
delete compression_writer;
return nullptr;
}
compression_writer_as_wrapper = compression_writer;
compression_writer_as_writer = compression_writer;
} else if (algorithm_name == "zlib") {
Compression_zlib_writer *compression_writer =
new Compression_zlib_writer(this->get_message_handler(),
this->get_object_id_generator(),
Z_DEFAULT_COMPRESSION);
if (compression_writer->init()) {
delete compression_writer;
return nullptr;
}
compression_writer_as_wrapper = compression_writer;
compression_writer_as_writer = compression_writer;
} else {
this->pass_message(Mysql::Tools::Base::Message_data(
0, "Unknown compression method: " + algorithm_name,
Mysql::Tools::Base::Message_type_error));
return nullptr;
}
compression_writer_as_wrapper->register_output_writer(writer);
writer = compression_writer_as_writer;
m_all_created_elements.push_back(writer);
}
Sql_formatter *formatter = new Sql_formatter(
this->get_connection_provider(), this->get_message_handler(),
this->get_object_id_generator(), m_options,
m_options->m_formatter_options);
this->register_progress_watchers_in_child(formatter);
formatter->register_output_writer(writer);
m_all_created_elements.push_back(formatter);
m_main_object_reader = new Mysql_object_reader(
this->get_connection_provider(), this->get_message_handler(),
this->get_object_id_generator(), m_options->m_object_reader_options);
this->register_progress_watchers_in_child(m_main_object_reader);
m_main_object_reader->register_data_formatter(formatter);
m_all_created_elements.push_back(m_main_object_reader);
}
/*
run as a single process only if default parallelism is set to 0 and
parallel schemas is not set
*/
if (m_options->m_default_parallelism == 0 &&
m_options->get_parallel_schemas_thread_count() == 0) {
return m_main_object_reader;
}
Abstract_data_object *data_object =
dynamic_cast<Abstract_data_object *>(dump_task->get_related_db_object());
int object_queue_id = (data_object != nullptr)
? (m_options->get_object_queue_id_for_schema(
data_object->get_schema()))
: 0;
std::map<int, Object_queue *>::iterator it =
m_object_queues.find(object_queue_id);
if (it != m_object_queues.end()) {
return it->second;
}
Object_queue *queue = new Object_queue(
this->get_message_handler(), this->get_object_id_generator(),
m_options->get_object_queue_threads_count(object_queue_id),
new std::function<void(bool)>(std::bind(
&Mysqldump_tool_chain_maker::mysql_thread_callback, this, _1)),
m_program);
this->register_progress_watchers_in_child(queue);
queue->register_object_reader(m_main_object_reader);
m_all_created_elements.push_back(queue);
m_object_queues.insert(std::make_pair(object_queue_id, queue));
return queue;
}
void Mysqldump_tool_chain_maker::stop_queues() {
std::map<int, Object_queue *>::const_iterator iter;
for (iter = m_object_queues.begin(); iter != m_object_queues.end(); ++iter) {
iter->second->stop_queue();
}
}
void Mysqldump_tool_chain_maker::mysql_thread_callback(bool is_starting) {
if (is_starting)
mysql_thread_init();
else
mysql_thread_end();
}
Mysqldump_tool_chain_maker::~Mysqldump_tool_chain_maker() {
for (std::vector<I_chain_element *>::reverse_iterator it =
m_all_created_elements.rbegin();
it != m_all_created_elements.rend(); ++it) {
delete *it;
}
}
Mysqldump_tool_chain_maker::Mysqldump_tool_chain_maker(
I_connection_provider *connection_provider,
std::function<bool(const Mysql::Tools::Base::Message_data &)>
*message_handler,
Simple_id_generator *object_id_generator,
Mysqldump_tool_chain_maker_options *options,
Mysql::Tools::Base::Abstract_program *program)
: Abstract_chain_element(message_handler, object_id_generator),
Abstract_mysql_chain_element_extension(
connection_provider, message_handler,
options->m_mysql_chain_element_options),
m_options(options),
m_main_object_reader(nullptr),
m_program(program) {}
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