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/* Copyright (C) 2014 MariaDB Corporation.
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 Street, Fifth Floor, Boston, MA 02111-1301 USA */
#ifndef MYSQL_SERVER
#define MYSQL_SERVER
#endif
#include <my_config.h>
#include <mysql/plugin.h>
#include <table.h> /* ST_SCHEMA_TABLE */
#include <sql_show.h>
#include <sql_acl.h> /* check_global_access() */
#include <wsrep_mysqld.h>
#include <wsrep_utils.h>
/* WSREP_MEMBERSHIP table fields */
/* Node index */
#define COLUMN_WSREP_MEMB_INDEX 0
/* Unique member ID */
#define COLUMN_WSREP_MEMB_UUID 1
/* Human-readable name */
#define COLUMN_WSREP_MEMB_NAME 2
/* Incoming address */
#define COLUMN_WSREP_MEMB_ADDRESS 3
/* WSREP_STATUS table fields */
/* Node index */
#define COLUMN_WSREP_STATUS_NODE_INDEX 0
/* Node status */
#define COLUMN_WSREP_STATUS_NODE_STATUS 1
/* Cluster status */
#define COLUMN_WSREP_STATUS_CLUSTER_STATUS 2
/* Cluster size */
#define COLUMN_WSREP_STATUS_CLUSTER_SIZE 3
/* Global cluster state UUID */
#define COLUMN_WSREP_STATUS_CLUSTER_STATE_UUID 4
/* Global cluster state Sequence number */
#define COLUMN_WSREP_STATUS_CLUSTER_STATE_SEQNO 5
/* Cluster membership changes */
#define COLUMN_WSREP_STATUS_CLUSTER_CONF_ID 6
/* Gap between global and local states ? */
#define COLUMN_WSREP_STATUS_GAP 7
/* Application protocol version */
#define COLUMN_WSREP_STATUS_PROTO_VERSION 8
static const char* get_member_status(wsrep_member_status_t status)
{
switch (status)
{
case WSREP_MEMBER_UNDEFINED: return "Undefined";
case WSREP_MEMBER_JOINER: return "Joiner";
case WSREP_MEMBER_DONOR: return "Donor";
case WSREP_MEMBER_JOINED: return "Joined";
case WSREP_MEMBER_SYNCED: return "Synced";
case WSREP_MEMBER_ERROR: return "Error";
default: break;
}
return "UNKNOWN";
}
static const char* get_cluster_status(wsrep_view_status_t status)
{
switch (status)
{
case WSREP_VIEW_PRIMARY: return "Primary";
case WSREP_VIEW_NON_PRIMARY: return "Non-primary";
case WSREP_VIEW_DISCONNECTED: return "Disconnected";
default: break;
}
return "UNKNOWN";
}
static ST_FIELD_INFO wsrep_memb_fields[]=
{
{"INDEX", MY_INT32_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG, 0, 0, "Index", 0},
{"UUID", WSREP_UUID_STR_LEN, MYSQL_TYPE_STRING, 0, 0, "Uuid", 0},
{"NAME", WSREP_MEMBER_NAME_LEN, MYSQL_TYPE_STRING, 0, 0, "Name", 0},
{"ADDRESS", WSREP_INCOMING_LEN, MYSQL_TYPE_STRING, 0, 0, "Address", 0},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0, 0}
};
static ST_FIELD_INFO wsrep_status_fields[]=
{
{"NODE_INDEX", MY_INT32_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG,
0, 0, "Node_Index", 0},
{"NODE_STATUS", 16, MYSQL_TYPE_STRING, 0, 0, "Node_Status", 0},
{"CLUSTER_STATUS", 16, MYSQL_TYPE_STRING, 0, 0, "Cluster_Status", 0},
{"CLUSTER_SIZE", MY_INT32_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG,
0, 0, "Cluster_Size", 0},
{"CLUSTER_STATE_UUID", WSREP_UUID_STR_LEN, MYSQL_TYPE_STRING,
0, 0, 0, 0},
{"CLUSTER_STATE_SEQNO", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG,
0, 0, 0, 0},
{"CLUSTER_CONF_ID", MY_INT64_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG,
0, 0, 0, 0},
{"GAP", 10, MYSQL_TYPE_STRING, 0, 0, 0, 0},
{"PROTOCOL_VERSION", MY_INT32_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONG,
0, 0, 0, 0},
{0, 0, MYSQL_TYPE_STRING, 0, 0, 0, 0}
};
static int wsrep_memb_fill_table(THD *thd, TABLE_LIST *tables, COND *cond)
{
int rc= 0;
if (check_global_access(thd, SUPER_ACL, true))
return rc;
wsrep_config_state->lock();
Dynamic_array<wsrep_member_info_t> *memb_arr=
wsrep_config_state->get_member_info();
TABLE *table= tables->table;
for (unsigned int i= 0; i < memb_arr->elements(); i ++)
{
wsrep_member_info_t memb= memb_arr->at(i);
table->field[COLUMN_WSREP_MEMB_INDEX]->store(i, 0);
char uuid[40];
wsrep_uuid_print(&memb.id, uuid, sizeof(uuid));
table->field[COLUMN_WSREP_MEMB_UUID]->store(uuid, sizeof(uuid),
system_charset_info);
table->field[COLUMN_WSREP_MEMB_NAME]->store(memb.name, strlen(memb.name),
system_charset_info);
table->field[COLUMN_WSREP_MEMB_ADDRESS]->store(memb.incoming,
strlen(memb.incoming),
system_charset_info);
if (schema_table_store_record(thd, table))
{
rc= 1;
goto end;
}
}
end:
wsrep_config_state->unlock();
return rc;
}
static int wsrep_memb_plugin_init(void *p)
{
ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p;
schema->fields_info= wsrep_memb_fields;
schema->fill_table= wsrep_memb_fill_table;
return 0;
}
static struct st_mysql_information_schema wsrep_memb_plugin=
{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION };
static int wsrep_status_fill_table(THD *thd, TABLE_LIST *tables, COND *cond)
{
int rc= 0;
if (check_global_access(thd, SUPER_ACL, true))
return rc;
wsrep_config_state->lock();
wsrep_view_info_t view= wsrep_config_state->get_view_info();
wsrep_member_status_t status= wsrep_config_state->get_status();
TABLE *table= tables->table;
table->field[COLUMN_WSREP_STATUS_NODE_INDEX]
->store(view.my_idx, 0);
table->field[COLUMN_WSREP_STATUS_NODE_STATUS]
->store(get_member_status(status), strlen(get_member_status(status)),
system_charset_info);
table->field[COLUMN_WSREP_STATUS_CLUSTER_STATUS]
->store(get_cluster_status(view.status),
strlen(get_cluster_status(view.status)),
system_charset_info);
table->field[COLUMN_WSREP_STATUS_CLUSTER_SIZE]->store(view.memb_num, 0);
char uuid[40];
wsrep_uuid_print(&view.state_id.uuid, uuid, sizeof(uuid));
table->field[COLUMN_WSREP_STATUS_CLUSTER_STATE_UUID]
->store(uuid, sizeof(uuid), system_charset_info);
table->field[COLUMN_WSREP_STATUS_CLUSTER_STATE_SEQNO]
->store(view.state_id.seqno, 0);
table->field[COLUMN_WSREP_STATUS_CLUSTER_CONF_ID]->store(view.view, 0);
const char *gap= (view.state_gap == true) ? "YES" : "NO";
table->field[COLUMN_WSREP_STATUS_GAP]->store(gap, strlen(gap),
system_charset_info);
table->field[COLUMN_WSREP_STATUS_PROTO_VERSION]->store(view.proto_ver, 0);
if (schema_table_store_record(thd, table))
rc= 1;
wsrep_config_state->unlock();
return rc;
}
static int wsrep_status_plugin_init(void *p)
{
ST_SCHEMA_TABLE *schema= (ST_SCHEMA_TABLE *)p;
schema->fields_info= wsrep_status_fields;
schema->fill_table= wsrep_status_fill_table;
return 0;
}
static struct st_mysql_information_schema wsrep_status_plugin=
{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION };
/*
Plugin library descriptor
*/
maria_declare_plugin(wsrep_info)
{
MYSQL_INFORMATION_SCHEMA_PLUGIN,
&wsrep_memb_plugin,
"WSREP_MEMBERSHIP", /* Plugin name */
"Nirbhay Choubey", /* Plugin author */
"Information about group members", /* Plugin description */
PLUGIN_LICENSE_GPL, /* License */
wsrep_memb_plugin_init, /* Plugin Init */
0, /* Plugin Deinit */
0x0100, /* Version (hex) */
NULL, /* Status variables */
NULL, /* System variables */
"1.0", /* Version (string) */
MariaDB_PLUGIN_MATURITY_STABLE /* Maturity */
},
{
MYSQL_INFORMATION_SCHEMA_PLUGIN,
&wsrep_status_plugin,
"WSREP_STATUS", /* Plugin name */
"Nirbhay Choubey", /* Plugin author */
"Group view information", /* Plugin description */
PLUGIN_LICENSE_GPL, /* License */
wsrep_status_plugin_init, /* Plugin Init */
0, /* Plugin Deinit */
0x0100, /* Version (hex) */
NULL, /* Status variables */
NULL, /* System variables */
"1.0", /* Version (string) */
MariaDB_PLUGIN_MATURITY_STABLE /* Maturity */
}
maria_declare_plugin_end;
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