mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
127 lines
4.2 KiB
C++
127 lines
4.2 KiB
C++
/* Copyright (C) 2000-2003 MySQL AB, 2008-2009 Sun Microsystems, Inc
|
|
|
|
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
#ifndef RPL_MI_H
|
|
#define RPL_MI_H
|
|
|
|
#ifdef HAVE_REPLICATION
|
|
|
|
#include "rpl_rli.h"
|
|
#include "rpl_reporting.h"
|
|
#include "my_sys.h"
|
|
|
|
|
|
/*****************************************************************************
|
|
|
|
Replication IO Thread
|
|
|
|
Master_info contains:
|
|
- information about how to connect to a master
|
|
- current master log name
|
|
- current master log offset
|
|
- misc control variables
|
|
|
|
Master_info is initialized once from the master.info file if such
|
|
exists. Otherwise, data members corresponding to master.info fields
|
|
are initialized with defaults specified by master-* options. The
|
|
initialization is done through init_master_info() call.
|
|
|
|
The format of master.info file:
|
|
|
|
log_name
|
|
log_pos
|
|
master_host
|
|
master_user
|
|
master_pass
|
|
master_port
|
|
master_connect_retry
|
|
|
|
To write out the contents of master.info file to disk ( needed every
|
|
time we read and queue data from the master ), a call to
|
|
flush_master_info() is required.
|
|
|
|
To clean up, call end_master_info()
|
|
|
|
*****************************************************************************/
|
|
|
|
class Master_info : public Slave_reporting_capability
|
|
{
|
|
public:
|
|
Master_info(bool is_slave_recovery);
|
|
~Master_info();
|
|
bool shall_ignore_server_id(ulong s_id);
|
|
|
|
/* the variables below are needed because we can change masters on the fly */
|
|
char master_log_name[FN_REFLEN];
|
|
char host[HOSTNAME_LENGTH+1];
|
|
char user[USERNAME_LENGTH+1];
|
|
char password[MAX_PASSWORD_LENGTH+1];
|
|
my_bool ssl; // enables use of SSL connection if true
|
|
char ssl_ca[FN_REFLEN], ssl_capath[FN_REFLEN], ssl_cert[FN_REFLEN];
|
|
char ssl_cipher[FN_REFLEN], ssl_key[FN_REFLEN];
|
|
my_bool ssl_verify_server_cert;
|
|
|
|
my_off_t master_log_pos;
|
|
File fd; // we keep the file open, so we need to remember the file pointer
|
|
IO_CACHE file;
|
|
|
|
mysql_mutex_t data_lock, run_lock;
|
|
mysql_cond_t data_cond, start_cond, stop_cond;
|
|
THD *io_thd;
|
|
MYSQL* mysql;
|
|
uint32 file_id; /* for 3.23 load data infile */
|
|
Relay_log_info rli;
|
|
uint port;
|
|
uint connect_retry;
|
|
#ifndef DBUG_OFF
|
|
int events_till_disconnect;
|
|
#endif
|
|
bool inited;
|
|
volatile bool abort_slave;
|
|
volatile uint slave_running;
|
|
volatile ulong slave_run_id;
|
|
/*
|
|
The difference in seconds between the clock of the master and the clock of
|
|
the slave (second - first). It must be signed as it may be <0 or >0.
|
|
clock_diff_with_master is computed when the I/O thread starts; for this the
|
|
I/O thread does a SELECT UNIX_TIMESTAMP() on the master.
|
|
"how late the slave is compared to the master" is computed like this:
|
|
clock_of_slave - last_timestamp_executed_by_SQL_thread - clock_diff_with_master
|
|
|
|
*/
|
|
long clock_diff_with_master;
|
|
/*
|
|
Keeps track of the number of events before fsyncing.
|
|
The option --sync-master-info determines how many
|
|
events should happen before fsyncing.
|
|
*/
|
|
uint sync_counter;
|
|
float heartbeat_period; // interface with CHANGE MASTER or master.info
|
|
ulonglong received_heartbeats; // counter of received heartbeat events
|
|
DYNAMIC_ARRAY ignore_server_ids;
|
|
ulong master_id;
|
|
};
|
|
void init_master_log_pos(Master_info* mi);
|
|
int init_master_info(Master_info* mi, const char* master_info_fname,
|
|
const char* slave_info_fname,
|
|
bool abort_if_no_master_info_file,
|
|
int thread_mask);
|
|
void end_master_info(Master_info* mi);
|
|
int flush_master_info(Master_info* mi, bool flush_relay_log_cache);
|
|
int change_master_server_id_cmp(ulong *id1, ulong *id2);
|
|
|
|
#endif /* HAVE_REPLICATION */
|
|
#endif /* RPL_MI_H */
|