mysql5/mysql-5.7.27/storage/perfschema/table_replication_connection_status.h

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3.7 KiB
C++

/*
Copyright (c) 2013, 2018, 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 02110-1301 USA */
#ifndef TABLE_REPLICATION_CONNECTION_STATUS_H
#define TABLE_REPLICATION_CONNECTION_STATUS_H
/**
@file storage/perfschema/table_replication_connection_status.h
Table replication_connection_status (declarations).
*/
#include "pfs_column_types.h"
#include "pfs_engine_table.h"
#include "rpl_mi.h"
#include "rpl_reporting.h" /* MAX_SLAVE_ERRMSG */
#include "mysql_com.h"
#include "rpl_msr.h"
#include "rpl_info.h" /*CHANNEL_NAME_LENGTH */
class Master_info;
/**
@addtogroup Performance_schema_tables
@{
*/
#ifndef ENUM_RPL_YES_NO
#define ENUM_RPL_YES_NO
enum enum_rpl_yes_no {
PS_RPL_YES= 1,
PS_RPL_NO
};
#endif
enum enum_rpl_connect_status_service_state {
PS_RPL_CONNECT_SERVICE_STATE_YES= 1,
PS_RPL_CONNECT_SERVICE_STATE_NO,
PS_RPL_CONNECT_SERVICE_STATE_CONNECTING
};
/*
A row in the table. The fields with string values have an additional
length field denoted by <field_name>_length.
*/
struct st_row_connect_status {
char group_name[UUID_LENGTH];
bool group_name_is_null;
char channel_name[CHANNEL_NAME_LENGTH];
uint channel_name_length;
char source_uuid[UUID_LENGTH];
bool source_uuid_is_null;
ulonglong thread_id;
bool thread_id_is_null;
enum_rpl_connect_status_service_state service_state;
ulonglong count_received_heartbeats;
ulonglong last_heartbeat_timestamp;
char* received_transaction_set;
int received_transaction_set_length;
uint last_error_number;
char last_error_message[MAX_SLAVE_ERRMSG];
uint last_error_message_length;
ulonglong last_error_timestamp;
st_row_connect_status() : received_transaction_set(NULL) {}
void cleanup()
{
if (received_transaction_set != NULL)
{
my_free(received_transaction_set);
received_transaction_set= NULL;
}
}
};
/** Table PERFORMANCE_SCHEMA.REPLICATION_CONNECTION_STATUS. */
class table_replication_connection_status: public PFS_engine_table
{
typedef PFS_simple_index pos_t;
private:
void make_row(Master_info *mi);
/** Table share lock. */
static THR_LOCK m_table_lock;
/** Fields definition. */
static TABLE_FIELD_DEF m_field_def;
/** True if the current row exists. */
bool m_row_exists;
/** Current row */
st_row_connect_status m_row;
/** Current position. */
pos_t m_pos;
/** Next position. */
pos_t m_next_pos;
protected:
/**
Read the current row values.
@param table Table handle
@param buf row buffer
@param fields Table fields
@param read_all true if all columns are read.
*/
virtual int read_row_values(TABLE *table,
unsigned char *buf,
Field **fields,
bool read_all);
table_replication_connection_status();
public:
~table_replication_connection_status();
/** Table share. */
static PFS_engine_table_share m_share;
static PFS_engine_table* create();
static ha_rows get_row_count();
virtual int rnd_next();
virtual int rnd_pos(const void *pos);
virtual void reset_position(void);
};
/** @} */
#endif