151 lines
4.6 KiB
C++
151 lines
4.6 KiB
C++
/* Copyright (c) 2018, 2021, Alibaba and/or its affiliates. All rights reserved.
|
|
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 also distributed 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/PolarDB-X Engine hereby grant you an
|
|
additional permission to link the program and your derivative works with the
|
|
separately licensed software that they have included with
|
|
MySQL/PolarDB-X Engine.
|
|
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 "sql/log_event_ext.h"
|
|
#include "sql/log_event.h"
|
|
|
|
|
|
#ifdef MYSQL_SERVER
|
|
Gcn_log_event::Gcn_log_event(THD *thd_arg)
|
|
: binary_log::Gcn_event(),
|
|
Log_event(thd_arg,
|
|
LOG_EVENT_IGNORABLE_F,
|
|
Log_event::EVENT_TRANSACTIONAL_CACHE,
|
|
Log_event::EVENT_NORMAL_LOGGING, header(), footer()){
|
|
DBUG_TRACE;
|
|
|
|
Log_event_type event_type = binary_log::GCN_LOG_EVENT;
|
|
common_header->type_code = event_type;
|
|
common_header->set_is_valid(true);
|
|
common_header->flags |= LOG_EVENT_IGNORABLE_F;
|
|
}
|
|
|
|
int Gcn_log_event::pack_info(Protocol *protocol) {
|
|
String str_buf;
|
|
str_buf.append("SET @@SESSION.INNODB_COMMIT_SEQ=");
|
|
|
|
char gcn_buf[64];
|
|
longlong10_to_str(commit_gcn, gcn_buf, 10);
|
|
str_buf.append(gcn_buf);
|
|
|
|
protocol->store_string(str_buf.ptr(), str_buf.length(), &my_charset_bin);
|
|
return 0;
|
|
}
|
|
#endif // MYSQL_SERVER
|
|
|
|
#ifdef MYSQL_SERVER
|
|
|
|
uint32 Gcn_log_event::write_data_header_to_memory(uchar *buffer) {
|
|
DBUG_TRACE;
|
|
uchar *ptr_buffer = buffer;
|
|
|
|
if (thd && thd->get_commit_gcn() != MYSQL_GCN_NULL) {
|
|
flags |= FLAG_HAVE_COMMITTED_GCN;
|
|
commit_gcn = thd->get_commit_gcn();
|
|
}
|
|
|
|
if (thd != nullptr && thd->variables.innodb_commit_gcn != MYSQL_GCN_NULL) {
|
|
flags |= FLAG_HAVE_COMMITTED_SEQ;
|
|
}
|
|
|
|
if (thd != nullptr && thd->variables.innodb_snapshot_gcn != MYSQL_GCN_NULL) {
|
|
flags |= FLAG_HAVE_SNAPSHOT_SEQ;
|
|
}
|
|
|
|
//DBUG_ASSERT(flags != 0);
|
|
|
|
*ptr_buffer = flags;
|
|
ptr_buffer += FLAGS_LENGTH;
|
|
|
|
if (flags & FLAG_HAVE_COMMITTED_GCN) {
|
|
int8store(ptr_buffer, commit_gcn);
|
|
ptr_buffer += COMMITTED_GCN_LENGTH;
|
|
}
|
|
|
|
return ptr_buffer - buffer;
|
|
}
|
|
|
|
bool Gcn_log_event::write_data_header(Basic_ostream *ostream) {
|
|
DBUG_TRACE;
|
|
uchar buffer[POST_HEADER_LENGTH];
|
|
write_data_header_to_memory(buffer);
|
|
return wrapper_my_b_safe_write(ostream, (uchar *)buffer, POST_HEADER_LENGTH);
|
|
}
|
|
|
|
bool Gcn_log_event::write(Basic_ostream *ostream) {
|
|
return (write_header(ostream, get_data_size()) ||
|
|
write_data_header(ostream) || write_footer(ostream));
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifndef MYSQL_SERVER
|
|
void Gcn_log_event::print(FILE *, PRINT_EVENT_INFO *print_event_info) const {
|
|
DBUG_ASSERT(flags != 0);
|
|
IO_CACHE *const head = &print_event_info->head_cache;
|
|
|
|
if (!print_event_info->short_form)
|
|
{
|
|
print_header(head, print_event_info, false);
|
|
my_b_printf(head, "\tGcn\thave_snapshot_seq=%s\thave_commit_seq=%s\n",
|
|
(flags & FLAG_HAVE_SNAPSHOT_SEQ) ? "true" : "false",
|
|
(flags & FLAG_HAVE_COMMITTED_SEQ) ? "true" : "false");
|
|
}
|
|
|
|
if (flags & FLAG_HAVE_COMMITTED_GCN) {
|
|
my_b_printf(head, "SET @@session.innodb_commit_seq=%llu%s\n",
|
|
(ulonglong)commit_gcn, print_event_info->delimiter);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef MYSQL_SERVER
|
|
int Gcn_log_event::do_apply_event(Relay_log_info const *rli) {
|
|
DBUG_TRACE;
|
|
DBUG_ASSERT(rli->info_thd == thd);
|
|
|
|
if (flags & FLAG_HAVE_COMMITTED_GCN) {
|
|
thd->variables.innodb_commit_gcn = commit_gcn;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int Gcn_log_event::do_update_pos(Relay_log_info *rli) {
|
|
/*
|
|
This event does not increment group positions. This means
|
|
that if there is a failure after it has been processed,
|
|
it will be automatically re-executed.
|
|
*/
|
|
rli->inc_event_relay_log_pos();
|
|
return 0;
|
|
}
|
|
|
|
Log_event::enum_skip_reason Gcn_log_event::do_shall_skip(Relay_log_info *rli) {
|
|
Log_event::enum_skip_reason ret = Log_event::continue_group(rli);
|
|
|
|
if (ret != EVENT_SKIP_NOT) {
|
|
thd->m_extra_desc.m_commit_gcn = MYSQL_GCN_NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif // MYSQL_SERVER
|