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polardbxengine/plugin/test_service_sql_api/test_sql_shutdown.cc

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/* Copyright (c) 2015, 2019, 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, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
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, version 2.0, 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 */
#define LOG_COMPONENT_TAG "test_session_attach"
#include <fcntl.h>
#include <mysql/plugin.h>
#include <stdlib.h>
#include <sys/types.h>
#include <mysql/components/my_service.h>
#include <mysql/components/services/log_builtins.h>
#include <mysqld_error.h>
#include "m_string.h"
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_io.h"
#include "my_sys.h" // my_write, my_malloc
#include "my_systime.h" // my_sleep()
#include "mysql_com.h"
#include "sql/sql_plugin.h" // st_plugin_int
#include "template_utils.h"
#define STRING_BUFFER_SIZE 1024
static const char *sep =
"======================================================\n";
#define WRITE_SEP() \
my_write(outfile, pointer_cast<const uchar *>(sep), strlen(sep), MYF(0))
static SERVICE_TYPE(registry) *reg_srv = nullptr;
SERVICE_TYPE(log_builtins) *log_bi = nullptr;
SERVICE_TYPE(log_builtins_string) *log_bs = nullptr;
static File outfile;
static void WRITE_STR(const char *format) {
char buffer[STRING_BUFFER_SIZE];
snprintf(buffer, sizeof(buffer), "%s", format);
my_write(outfile, (uchar *)buffer, strlen(buffer), MYF(0));
}
template <typename T>
void WRITE_VAL(const char *format, T value) {
char buffer[STRING_BUFFER_SIZE];
snprintf(buffer, sizeof(buffer), format, value);
my_write(outfile, (uchar *)buffer, strlen(buffer), MYF(0));
}
template <typename T1, typename T2>
void WRITE_VAL(const char *format, T1 value1, T2 value2) {
char buffer[STRING_BUFFER_SIZE];
snprintf(buffer, sizeof(buffer), format, value1, value2);
my_write(outfile, (uchar *)buffer, strlen(buffer), MYF(0));
}
struct st_send_field_n {
char db_name[256];
char table_name[256];
char org_table_name[256];
char col_name[256];
char org_col_name[256];
unsigned long length;
unsigned int charsetnr;
unsigned int flags;
unsigned int decimals;
enum_field_types type;
};
struct st_decimal_n {
int intg, frac, len;
bool sign;
decimal_digit_t buf[256];
};
struct st_plugin_ctx {
const CHARSET_INFO *resultcs;
uint meta_server_status;
uint meta_warn_count;
uint current_col;
uint num_cols;
uint num_rows;
st_send_field_n sql_field[64];
char sql_str_value[64][64][256];
size_t sql_str_len[64][64];
longlong sql_int_value[64][64];
longlong sql_longlong_value[64][64];
uint sql_is_unsigned[64][64];
st_decimal_n sql_decimal_value[64][64];
double sql_double_value[64][64];
uint32 sql_double_decimals[64][64];
MYSQL_TIME sql_date_value[64][64];
MYSQL_TIME sql_time_value[64][64];
uint sql_time_decimals[64][64];
MYSQL_TIME sql_datetime_value[64][64];
uint sql_datetime_decimals[64][64];
uint server_status;
uint warn_count;
uint affected_rows;
uint last_insert_id;
char message[1024];
uint sql_errno;
char err_msg[1024];
char sqlstate[6];
st_plugin_ctx() { reset(); }
void reset() {
resultcs = NULL;
server_status = 0;
current_col = 0;
warn_count = 0;
num_cols = 0;
num_rows = 0;
memset(&sql_field, 0, 64 * sizeof(st_send_field_n));
memset(&sql_str_value, 0, 64 * 64 * 256 * sizeof(char));
memset(&sql_str_len, 0, 64 * 64 * sizeof(size_t));
memset(&sql_int_value, 0, 64 * 64 * sizeof(longlong));
memset(&sql_longlong_value, 0, 64 * 64 * sizeof(longlong));
memset(&sql_is_unsigned, 0, 64 * 64 * sizeof(uint));
memset(&sql_decimal_value, 0, 64 * 64 * sizeof(st_decimal_n));
memset(&sql_double_value, 0, 64 * 64 * sizeof(double));
memset(&sql_double_decimals, 0, 64 * 64 * sizeof(uint32));
memset(&sql_date_value, 0, 64 * 64 * sizeof(MYSQL_TIME));
memset(&sql_time_value, 0, 64 * 64 * sizeof(MYSQL_TIME));
memset(&sql_time_decimals, 0, 64 * 64 * sizeof(uint));
memset(&sql_datetime_value, 0, 64 * 64 * sizeof(MYSQL_TIME));
memset(&sql_datetime_decimals, 0, 64 * 64 * sizeof(uint));
server_status = 0;
warn_count = 0;
affected_rows = 0;
last_insert_id = 0;
memset(&message, 0, sizeof(message));
sql_errno = 0;
memset(&err_msg, 0, sizeof(err_msg));
memset(&sqlstate, 0, sizeof(sqlstate));
}
};
static int sql_start_result_metadata(void *ctx, uint num_cols, uint,
const CHARSET_INFO *resultcs) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
DBUG_PRINT("info", ("resultcs->number: %d", resultcs->number));
DBUG_PRINT("info", ("resultcs->csname: %s", resultcs->csname));
DBUG_PRINT("info", ("resultcs->name: %s", resultcs->name));
pctx->num_cols = num_cols;
pctx->resultcs = resultcs;
pctx->current_col = 0;
return false;
}
static int sql_field_metadata(void *ctx, struct st_send_field *field,
const CHARSET_INFO *) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
st_send_field_n *cfield = &pctx->sql_field[pctx->current_col];
DBUG_TRACE;
DBUG_PRINT("info", ("field->db_name: %s", field->db_name));
DBUG_PRINT("info", ("field->table_name: %s", field->table_name));
DBUG_PRINT("info", ("field->org_table_name: %s", field->org_table_name));
DBUG_PRINT("info", ("field->col_name: %s", field->col_name));
DBUG_PRINT("info", ("field->org_col_name: %s", field->org_col_name));
DBUG_PRINT("info", ("field->length: %d", (int)field->length));
DBUG_PRINT("info", ("field->charsetnr: %d", (int)field->charsetnr));
DBUG_PRINT("info", ("field->flags: %d", (int)field->flags));
DBUG_PRINT("info", ("field->decimals: %d", (int)field->decimals));
DBUG_PRINT("info", ("field->type: %d", (int)field->type));
strcpy(cfield->db_name, field->db_name);
strcpy(cfield->table_name, field->table_name);
strcpy(cfield->org_table_name, field->org_table_name);
strcpy(cfield->col_name, field->col_name);
strcpy(cfield->org_col_name, field->org_col_name);
cfield->length = field->length;
cfield->charsetnr = field->charsetnr;
cfield->flags = field->flags;
cfield->decimals = field->decimals;
cfield->type = field->type;
pctx->current_col++;
return false;
}
static int sql_end_result_metadata(void *ctx, uint server_status,
uint warn_count) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
pctx->meta_server_status = server_status;
pctx->meta_warn_count = warn_count;
pctx->num_rows = 0;
return false;
}
static int sql_start_row(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
pctx->current_col = 0;
return false;
}
static int sql_end_row(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
pctx->num_rows++;
return false;
}
static void sql_abort_row(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
pctx->current_col = 0;
}
static ulong sql_get_client_capabilities(void *) {
DBUG_TRACE;
return 0;
}
static int sql_get_null(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
memcpy(pctx->sql_str_value[row][col], "[NULL]", sizeof("[NULL]"));
pctx->sql_str_len[row][col] = sizeof("[NULL]") - 1;
return false;
}
static int sql_get_integer(void *ctx, longlong value) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(pctx->sql_str_value[row][col],
sizeof(pctx->sql_str_value[row][col]), "%lld", value);
pctx->sql_str_len[row][col] = len;
pctx->sql_int_value[row][col] = value;
return false;
}
static int sql_get_longlong(void *ctx, longlong value, uint is_unsigned) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(pctx->sql_str_value[row][col],
sizeof(pctx->sql_str_value[row][col]),
is_unsigned ? "%llu" : "%lld", value);
pctx->sql_str_len[row][col] = len;
pctx->sql_longlong_value[row][col] = value;
pctx->sql_is_unsigned[row][col] = is_unsigned;
return false;
}
static int sql_get_decimal(void *ctx, const decimal_t *value) {
char buffer[1024];
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(buffer, sizeof(buffer), "%s%d.%d(%d)[%s]",
value->sign ? "+" : "-", value->intg, value->frac,
value->len, (const char *)value->buf);
strncpy(pctx->sql_str_value[row][col], buffer, len);
pctx->sql_str_len[row][col] = len;
pctx->sql_decimal_value[row][col].intg = value->intg;
pctx->sql_decimal_value[row][col].frac = value->frac;
pctx->sql_decimal_value[row][col].len = value->len;
pctx->sql_decimal_value[row][col].sign = value->sign;
memset((void *)pctx->sql_decimal_value[row][col].buf, '\0', (int)value->len);
memcpy((void *)pctx->sql_decimal_value[row][col].buf, (void *)value->buf,
(int)value->len);
return false;
}
static int sql_get_double(void *ctx, double value, uint32 decimals) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(pctx->sql_str_value[row][col],
sizeof(pctx->sql_str_value[row][col]), "%3.7g", value);
pctx->sql_str_len[row][col] = len;
pctx->sql_double_value[row][col] = value;
pctx->sql_double_decimals[row][col] = decimals;
return false;
}
static int sql_get_date(void *ctx, const MYSQL_TIME *value) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len =
snprintf(pctx->sql_str_value[row][col],
sizeof(pctx->sql_str_value[row][col]), "%s%4d-%02d-%02d",
value->neg ? "-" : "", value->year, value->month, value->day);
pctx->sql_str_len[row][col] = len;
pctx->sql_date_value[row][col].year = value->year;
pctx->sql_date_value[row][col].month = value->month;
pctx->sql_date_value[row][col].day = value->day;
pctx->sql_date_value[row][col].hour = value->hour;
pctx->sql_date_value[row][col].minute = value->minute;
pctx->sql_date_value[row][col].second = value->second;
pctx->sql_date_value[row][col].second_part = value->second_part;
pctx->sql_date_value[row][col].neg = value->neg;
return false;
}
static int sql_get_time(void *ctx, const MYSQL_TIME *value, uint decimals) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(
pctx->sql_str_value[row][col], sizeof(pctx->sql_str_value[row][col]),
"%s%02d:%02d:%02d", value->neg ? "-" : "",
value->day ? (value->day * 24 + value->hour) : value->hour, value->minute,
value->second);
pctx->sql_str_len[row][col] = len;
pctx->sql_time_value[row][col].year = value->year;
pctx->sql_time_value[row][col].month = value->month;
pctx->sql_time_value[row][col].day = value->day;
pctx->sql_time_value[row][col].hour = value->hour;
pctx->sql_time_value[row][col].minute = value->minute;
pctx->sql_time_value[row][col].second = value->second;
pctx->sql_time_value[row][col].second_part = value->second_part;
pctx->sql_time_value[row][col].neg = value->neg;
pctx->sql_time_decimals[row][col] = decimals;
return false;
}
static int sql_get_datetime(void *ctx, const MYSQL_TIME *value, uint decimals) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
size_t len = snprintf(
pctx->sql_str_value[row][col], sizeof(pctx->sql_str_value[row][col]),
"%s%4d-%02d-%02d %02d:%02d:%02d", value->neg ? "-" : "", value->year,
value->month, value->day, value->hour, value->minute, value->second);
pctx->sql_str_len[row][col] = len;
pctx->sql_datetime_value[row][col].year = value->year;
pctx->sql_datetime_value[row][col].month = value->month;
pctx->sql_datetime_value[row][col].day = value->day;
pctx->sql_datetime_value[row][col].hour = value->hour;
pctx->sql_datetime_value[row][col].minute = value->minute;
pctx->sql_datetime_value[row][col].second = value->second;
pctx->sql_datetime_value[row][col].second_part = value->second_part;
pctx->sql_datetime_value[row][col].neg = value->neg;
pctx->sql_datetime_decimals[row][col] = decimals;
return false;
}
static int sql_get_string(void *ctx, const char *const value, size_t length,
const CHARSET_INFO *const) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
uint row = pctx->num_rows;
uint col = pctx->current_col;
pctx->current_col++;
strncpy(pctx->sql_str_value[row][col], value, length);
pctx->sql_str_len[row][col] = length;
return false;
}
static void sql_handle_ok(void *ctx, uint server_status,
uint statement_warn_count, ulonglong affected_rows,
ulonglong last_insert_id, const char *const message) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
/* This could be an EOF */
if (!pctx->num_cols) pctx->num_rows = 0;
pctx->server_status = server_status;
pctx->warn_count = statement_warn_count;
pctx->affected_rows = affected_rows;
pctx->last_insert_id = last_insert_id;
if (message) strncpy(pctx->message, message, sizeof(pctx->message) - 1);
pctx->message[sizeof(pctx->message) - 1] = '\0';
}
static void sql_handle_error(void *ctx, uint sql_errno,
const char *const err_msg,
const char *const sqlstate) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
DBUG_TRACE;
pctx->sql_errno = sql_errno;
if (pctx->sql_errno) {
strcpy(pctx->err_msg, err_msg);
strcpy(pctx->sqlstate, sqlstate);
}
pctx->num_rows = 0;
}
static void sql_shutdown(void *, int shutdown_server) {
DBUG_TRACE;
int *crashme = NULL;
*crashme = 0;
if (shutdown_server) WRITE_STR("SERVER IS SHUTTING DOWN!!!\n");
}
const struct st_command_service_cbs sql_cbs = {
sql_start_result_metadata,
sql_field_metadata,
sql_end_result_metadata,
sql_start_row,
sql_end_row,
sql_abort_row,
sql_get_client_capabilities,
sql_get_null,
sql_get_integer,
sql_get_longlong,
sql_get_decimal,
sql_get_double,
sql_get_date,
sql_get_time,
sql_get_datetime,
sql_get_string,
sql_handle_ok,
sql_handle_error,
sql_shutdown,
};
static void get_data_integer(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
/* get values */
if ((pctx->num_rows > 0) && (pctx->num_cols > 0)) {
for (uint col_count = 0; col_count < pctx->num_cols; col_count++) {
WRITE_VAL("%s ", pctx->sql_field[col_count].col_name);
}
WRITE_STR("\n");
for (uint row_count = 0; row_count < pctx->num_rows; row_count++) {
for (uint col_count = 0; col_count < pctx->num_cols; col_count++) {
WRITE_VAL("%s ", pctx->sql_str_value[row_count][col_count]);
}
WRITE_STR("\n");
}
WRITE_STR("\n");
/* Metadata */
WRITE_VAL("num_cols : %d\n", pctx->num_cols);
WRITE_VAL("nb rows : %d\n", pctx->num_rows);
}
}
static void handle_error(void *ctx) {
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
/* handle_ok/error */
if (pctx->sql_errno) {
WRITE_VAL("error: %d\n", pctx->sql_errno);
WRITE_VAL("error msg: %s\n", pctx->err_msg);
} else {
WRITE_VAL("affected rows : %d\n", pctx->affected_rows);
WRITE_VAL("server status : %d\n", pctx->server_status);
WRITE_VAL("warn count : %d\n", pctx->warn_count);
}
}
static bool callback_called = false;
static void error_callback(void *, unsigned int sql_errno,
const char *err_msg) {
WRITE_VAL("ERROR %d : %s\n", sql_errno, err_msg);
callback_called = true;
}
static void exec_test_cmd(MYSQL_SESSION session, const char *test_cmd,
void *p MY_ATTRIBUTE((unused)), void *ctx) {
WRITE_VAL("%s\n", test_cmd);
struct st_plugin_ctx *pctx = (struct st_plugin_ctx *)ctx;
COM_DATA cmd;
pctx->reset();
cmd.com_query.query = test_cmd;
cmd.com_query.length = strlen(cmd.com_query.query);
int fail = command_service_run_command(session, COM_QUERY, &cmd,
&my_charset_utf8_general_ci, &sql_cbs,
CS_BINARY_REPRESENTATION, ctx);
if (fail) {
if (callback_called == false)
LogPluginErr(ERROR_LEVEL, ER_LOG_PRINTF_MSG, "Callback not called");
else
callback_called = false;
} else {
get_data_integer(ctx);
handle_error(ctx);
}
}
enum enum_init_cycle { FIRST_INIT = 1, SECOND_INIT = 2 };
static enum enum_init_cycle plugin_init_cycle = FIRST_INIT;
static void test_sql(void *p) {
DBUG_TRACE;
struct st_plugin_ctx *plugin_ctx = new st_plugin_ctx();
MYSQL_SESSION session;
/* Opening a Session */
WRITE_SEP();
WRITE_STR("Opening a Session\n");
session = srv_session_open(error_callback, plugin_ctx);
if (!session) {
/*
We hope that this will always be okay. During the restart we will get here
before the server has started fully
*/
if (srv_session_server_is_available() || !callback_called) {
LogPluginErr(ERROR_LEVEL, ER_LOG_PRINTF_MSG, "srv_session_open failed");
delete plugin_ctx;
return;
}
while (!srv_session_server_is_available()) my_sleep(500);
plugin_init_cycle = SECOND_INIT;
}
WRITE_SEP();
if (plugin_init_cycle == FIRST_INIT) {
while (srv_session_server_is_available()) my_sleep(500);
WRITE_STR("Apparently the server is shutting down\n");
}
exec_test_cmd(session, "SELECT 1, 2, 3 FROM DUAL", p, plugin_ctx);
/* Close Session */
WRITE_VAL("\nClosing Session. Plugin init cycle = %d\n\n", plugin_init_cycle);
srv_session_close(session);
delete plugin_ctx;
}
struct test_services_context {
my_thread_handle test_services_thread;
void *p;
};
static void *test_sql_threaded_wrapper(void *param) {
struct test_services_context *context = (struct test_services_context *)param;
if (srv_session_init_thread(context->p))
LogPluginErr(ERROR_LEVEL, ER_LOG_PRINTF_MSG,
"srv_session_init_thread failed.");
test_sql(context->p);
srv_session_deinit_thread();
return NULL;
}
static void create_log_file(const char *log_name) {
char filename[FN_REFLEN];
fn_format(filename, log_name, "", ".log",
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
unlink(filename);
outfile = my_open(filename, O_CREAT | O_RDWR, MYF(0));
}
static int test_sql_service_plugin_init(void *p MY_ATTRIBUTE((unused))) {
DBUG_TRACE;
if (init_logging_service_for_plugin(&reg_srv, &log_bi, &log_bs)) return 1;
LogPluginErr(INFORMATION_LEVEL, ER_LOG_PRINTF_MSG, "Installation.");
create_log_file("test_sql_shutdown");
struct test_services_context *context;
my_thread_attr_t attr; /* Thread attributes */
my_thread_attr_init(&attr);
(void)my_thread_attr_setdetachstate(&attr, MY_THREAD_CREATE_JOINABLE);
context = (struct test_services_context *)my_malloc(
PSI_INSTRUMENT_ME, sizeof(struct test_services_context), MYF(0));
context->p = p;
callback_called = false;
/* now create the thread and call test_session within the thread. */
if (my_thread_create(&context->test_services_thread, &attr,
test_sql_threaded_wrapper, context) != 0)
LogPluginErr(ERROR_LEVEL, ER_LOG_PRINTF_MSG,
"srv_session_init_thread failed.");
else
((struct st_plugin_int *)p)->data = (void *)context;
/* Now we can shut down the server */
return 0;
}
static int test_sql_service_plugin_deinit(void *p) {
struct test_services_context *con =
(struct test_services_context *)((struct st_plugin_int *)p)->data;
DBUG_TRACE;
LogPluginErr(INFORMATION_LEVEL, ER_LOG_PRINTF_MSG, "Uninstallation.");
deinit_logging_service_for_plugin(&reg_srv, &log_bi, &log_bs);
WRITE_STR("SERVER SHUTDOWN\n");
if (con) {
void *dummy_retval;
my_thread_cancel(&con->test_services_thread);
my_thread_join(&con->test_services_thread, &dummy_retval);
}
my_close(outfile, MYF(0));
my_free(con);
return 0;
}
struct st_mysql_daemon test_sql_service_plugin = {
MYSQL_DAEMON_INTERFACE_VERSION};
/*
Plugin library descriptor
*/
mysql_declare_plugin(test_daemon){
MYSQL_DAEMON_PLUGIN,
&test_sql_service_plugin,
"test_sql_shutdown",
"Horst Hunger, Andrey Hristov",
"Test SQL shutdown",
PLUGIN_LICENSE_GPL,
test_sql_service_plugin_init, /* Plugin Init */
NULL, /* Plugin Check uninstall */
test_sql_service_plugin_deinit, /* Plugin Deinit */
0x0100, /* 1.0 */
NULL, /* status variables */
NULL, /* system variables */
NULL, /* config options */
0, /* flags */
} mysql_declare_plugin_end;
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