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/* Copyright (c) 2006, 2010, Oracle 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 as published by the Free Software Foundation; version 2 of the License. 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 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 02110-1335 USA */ #ifndef RPL_REPORTING_H #define RPL_REPORTING_H #include <my_sys.h> /* loglevel */ /** Maximum size of an error message from a slave thread. */ #define MAX_SLAVE_ERRMSG 1024 /** Mix-in to handle the message logging and reporting for relay log info and master log info structures. By inheriting from this class, the class is imbued with capabilities to do slave reporting. */ class Slave_reporting_capability { public: /** lock used to synchronize m_last_error on 'SHOW SLAVE STATUS' **/ mutable mysql_mutex_t err_lock; /** Constructor. @param thread_name Printable name of the slave thread that is reporting. */ Slave_reporting_capability(char const *thread_name); mutable my_thread_id err_thread_id; /** Writes a message and, if it's an error message, to Last_Error (which will be displayed by SHOW SLAVE STATUS). @param level The severity level @param err_code The error code @param msg The message (usually related to the error code, but can contain more information), in printf() format. */ void report(loglevel level, int err_code, const char *extra_info, const char *msg, ...) const ATTRIBUTE_FORMAT(printf, 5, 6); /** Clear errors. They will not show up under <code>SHOW SLAVE STATUS</code>. */ void clear_error() { mysql_mutex_lock(&err_lock); m_last_error.clear(); mysql_mutex_unlock(&err_lock); } /** Error information structure. */ class Error { friend class Slave_reporting_capability; public: Error() { clear(); } void clear() { number= 0; message[0]= '\0'; timestamp[0]= '\0'; } void update_timestamp() { struct tm tm_tmp; struct tm *start; skr= my_time(0); localtime_r(&skr, &tm_tmp); start=&tm_tmp; snprintf(timestamp, sizeof(timestamp), "%02d%02d%02d %02d:%02d:%02d", start->tm_year % 100, start->tm_mon+1, start->tm_mday, start->tm_hour, start->tm_min, start->tm_sec); timestamp[15]= '\0'; } /** Error code */ uint32 number; /** Error message */ char message[MAX_SLAVE_ERRMSG]; /** Error timestamp as string */ char timestamp[64]; /** Error timestamp as time_t variable. Used in performance_schema */ time_t skr; }; Error const& last_error() const { return m_last_error; } virtual ~Slave_reporting_capability()= 0; private: /** Last error produced by the I/O or SQL thread respectively. */ mutable Error m_last_error; char const *const m_thread_name; // not implemented Slave_reporting_capability(const Slave_reporting_capability& rhs); Slave_reporting_capability& operator=(const Slave_reporting_capability& rhs); }; #endif // RPL_REPORTING_H
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