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86362129a2
If replication breaks in GTID mode, it is not trivial to determine the GTID of the failing event group. This is a problem, as such GTID is needed eg. to explicitly set @@gtid_slave_pos to skip to after that event group, or to compare errors on different servers, etc. Fix by ensuring that relevant slave errors logged to the error log include the GTID of the event group containing the problem event.
109 lines
3 KiB
C++
109 lines
3 KiB
C++
/* Copyright (c) 2006, 2010, 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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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#ifndef RPL_REPORTING_H
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#define RPL_REPORTING_H
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#include "my_sys.h" /* loglevel */
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/**
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Maximum size of an error message from a slave thread.
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*/
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#define MAX_SLAVE_ERRMSG 1024
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/**
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Mix-in to handle the message logging and reporting for relay log
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info and master log info structures.
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By inheriting from this class, the class is imbued with
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capabilities to do slave reporting.
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*/
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class Slave_reporting_capability
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{
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public:
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/** lock used to synchronize m_last_error on 'SHOW SLAVE STATUS' **/
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mutable mysql_mutex_t err_lock;
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/**
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Constructor.
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@param thread_name Printable name of the slave thread that is reporting.
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*/
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Slave_reporting_capability(char const *thread_name);
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/**
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Writes a message and, if it's an error message, to Last_Error
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(which will be displayed by SHOW SLAVE STATUS).
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@param level The severity level
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@param err_code The error code
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@param msg The message (usually related to the error
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code, but can contain more information), in
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printf() format.
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*/
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void report(loglevel level, int err_code, const char *extra_info,
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const char *msg, ...) const
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ATTRIBUTE_FORMAT(printf, 5, 6);
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/**
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Clear errors. They will not show up under <code>SHOW SLAVE
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STATUS</code>.
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*/
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void clear_error() {
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mysql_mutex_lock(&err_lock);
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m_last_error.clear();
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mysql_mutex_unlock(&err_lock);
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}
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/**
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Error information structure.
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*/
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class Error {
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friend class Slave_reporting_capability;
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public:
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Error()
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{
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clear();
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}
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void clear()
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{
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number= 0;
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message[0]= '\0';
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}
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/** Error code */
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uint32 number;
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/** Error message */
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char message[MAX_SLAVE_ERRMSG];
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};
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Error const& last_error() const { return m_last_error; }
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virtual ~Slave_reporting_capability()= 0;
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private:
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/**
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Last error produced by the I/O or SQL thread respectively.
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*/
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mutable Error m_last_error;
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char const *const m_thread_name;
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// not implemented
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Slave_reporting_capability(const Slave_reporting_capability& rhs);
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Slave_reporting_capability& operator=(const Slave_reporting_capability& rhs);
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};
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#endif // RPL_REPORTING_H
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