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191 lines
6.7 KiB
191 lines
6.7 KiB
/* Copyright (c) 2007, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql/rpl_reporting.h"
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#include <stdio.h>
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#include "m_string.h"
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#include "my_dbug.h"
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#include "my_sys.h"
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#include "mysql/components/services/log_builtins.h"
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#include "mysql/components/services/log_shared.h"
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#include "mysqld_error.h"
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#include "sql/current_thd.h"
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#include "sql/log.h"
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#include "sql/mysqld.h" // slave_trans_retries
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#include "sql/sql_class.h" // THD
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#include "sql/sql_error.h" // Diagnostics_area
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#include "sql/transaction_info.h"
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#include "thr_mutex.h"
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Slave_reporting_capability::Slave_reporting_capability(char const *thread_name)
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: m_thread_name(thread_name) {
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mysql_mutex_init(key_mutex_slave_reporting_capability_err_lock, &err_lock,
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MY_MUTEX_INIT_FAST);
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}
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/**
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Check if the current error is of temporary nature or not.
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Some errors are temporary in nature, such as
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ER_LOCK_DEADLOCK and ER_LOCK_WAIT_TIMEOUT. Ndb also signals
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that the error is temporary by pushing a warning with the error code
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ER_GET_TEMPORARY_ERRMSG, if the originating error is temporary.
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@param thd a THD instance, typically of the slave SQL thread's.
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@param error_arg the error code for assessment.
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defaults to zero which makes the function check the top
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of the reported errors stack.
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@param silent bool indicating whether the error should be silently
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handled.
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@return 1 as the positive and 0 as the negative verdict
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*/
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int Slave_reporting_capability::has_temporary_error(THD *thd, uint error_arg,
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bool *silent) const {
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uint error;
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DBUG_TRACE;
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DBUG_EXECUTE_IF(
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"all_errors_are_temporary_errors", if (thd->get_stmt_da()->is_error()) {
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thd->clear_error();
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my_error(ER_LOCK_DEADLOCK, MYF(0));
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});
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/*
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The slave can't be regarded as experiencing a temporary failure in cases of
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is_fatal_error is true, or if no error is in THD and error_arg is not set.
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*/
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if (thd->is_fatal_error() || (!thd->is_error() && error_arg == 0)) return 0;
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error = (error_arg == 0) ? thd->get_stmt_da()->mysql_errno() : error_arg;
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/*
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Temporary error codes:
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currently, InnoDB deadlock detected by InnoDB or lock
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wait timeout (innodb_lock_wait_timeout exceeded).
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Notice, the temporary error requires slave_trans_retries != 0)
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*/
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if (slave_trans_retries &&
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(error == ER_LOCK_DEADLOCK || error == ER_LOCK_WAIT_TIMEOUT))
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return 1;
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/*
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currently temporary error set in ndbcluster
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*/
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Diagnostics_area::Sql_condition_iterator it =
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thd->get_stmt_da()->sql_conditions();
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const Sql_condition *err;
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while ((err = it++)) {
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DBUG_PRINT("info", ("has condition %d %s", err->mysql_errno(),
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err->message_text()));
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switch (err->mysql_errno()) {
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case ER_GET_TEMPORARY_ERRMSG:
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return 1;
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case ER_SLAVE_SILENT_RETRY_TRANSACTION: {
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if (silent != nullptr) *silent = true;
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return 1;
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}
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default:
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break;
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}
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}
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return 0;
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}
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void Slave_reporting_capability::report(loglevel level, int err_code,
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const char *msg, ...) const {
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va_list args;
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va_start(args, msg);
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do_report(level, err_code, msg, args);
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va_end(args);
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}
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void Slave_reporting_capability::va_report(loglevel level, int err_code,
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const char *prefix_msg,
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const char *msg,
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va_list args) const {
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THD *thd = current_thd;
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char buff[MAX_SLAVE_ERRMSG];
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char *pbuff = buff;
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char *curr_buff;
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uint pbuffsize = sizeof(buff);
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if (thd && level == ERROR_LEVEL && has_temporary_error(thd, err_code) &&
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!thd->get_transaction()->cannot_safely_rollback(Transaction_ctx::SESSION))
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level = WARNING_LEVEL;
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mysql_mutex_lock(&err_lock);
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switch (level) {
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case ERROR_LEVEL:
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/*
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It's an error, it must be reported in Last_error and Last_errno in SHOW
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SLAVE STATUS.
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*/
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pbuff = m_last_error.message;
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pbuffsize = sizeof(m_last_error.message);
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m_last_error.number = err_code;
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m_last_error.update_timestamp();
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break;
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case WARNING_LEVEL:
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case INFORMATION_LEVEL:
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break;
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default:
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DBUG_ASSERT(0); // should not come here
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// don't crash production builds, just do nothing
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mysql_mutex_unlock(&err_lock);
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return;
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}
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curr_buff = pbuff;
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if (prefix_msg)
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curr_buff += snprintf(curr_buff, pbuffsize, "%s; ", prefix_msg);
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vsnprintf(curr_buff, pbuffsize - (curr_buff - pbuff), msg, args);
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mysql_mutex_unlock(&err_lock);
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/* If the msg string ends with '.', do not add a ',' it would be ugly */
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LogEvent()
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.type(LOG_TYPE_ERROR)
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.subsys(LOG_SUBSYSTEM_TAG)
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.prio(level)
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// if it's a client err-code, flag it as from diagnostics area
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.errcode((err_code < ER_SERVER_RANGE_START)
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? ER_RPL_SLAVE_ERROR_INFO_FROM_DA
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: err_code)
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.subsys("Repl")
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/*
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We'll use the original error-code in the actual message,
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even if it's out of range. That should make it easier
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to find, debug, and fix.
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*/
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.message("Slave %s%s: %s%s Error_code: MY-%06d", m_thread_name,
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get_for_channel_str(false), pbuff,
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(curr_buff[0] && *(strend(curr_buff) - 1) == '.') ? "" : ",",
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err_code);
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// we shouldn't really use client error codes here, so bomb out in debug mode
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// DBUG_ASSERT(err_code >= ER_SERVER_RANGE_START);
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}
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Slave_reporting_capability::~Slave_reporting_capability() {
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mysql_mutex_destroy(&err_lock);
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}
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