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MDEV-19275 Provide SQL service to plugins.

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SQL service added.
It provides the limited set of client library functions
to be used by plugin.
This commit is contained in:
Alexey Botchkov
2021-09-06 22:34:35 +04:00
committed by Oleksandr Byelkin
parent 401ff6994d
commit 0a0dfd63d9
25 changed files with 701 additions and 253 deletions
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21
libmysqld/lib_sql.cc
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@@ -43,7 +43,7 @@ C_MODE_START
extern unsigned int mysql_server_last_errno;
extern char mysql_server_last_error[MYSQL_ERRMSG_SIZE];
static my_bool emb_read_query_result(MYSQL *mysql);
static void emb_free_embedded_thd(MYSQL *mysql);
static void free_embedded_thd(MYSQL *mysql);
static bool embedded_print_errors= 0;
extern "C" void unireg_clear(int exit_code)
@@ -121,7 +121,7 @@ emb_advanced_command(MYSQL *mysql, enum enum_server_command command,
thd->killed= NOT_KILLED;
else
{
emb_free_embedded_thd(mysql);
free_embedded_thd(mysql);
thd= 0;
}
}
@@ -430,7 +430,7 @@ int emb_unbuffered_fetch(MYSQL *mysql, char **row)
return 0;
}
static void emb_free_embedded_thd(MYSQL *mysql)
static void free_embedded_thd(MYSQL *mysql)
{
THD *thd= (THD*)mysql->thd;
server_threads.erase(thd);
@@ -453,12 +453,23 @@ static MYSQL_RES * emb_store_result(MYSQL *mysql)
return mysql_store_result(mysql);
}
int emb_read_change_user_result(MYSQL *mysql)
static int emb_read_change_user_result(MYSQL *mysql)
{
mysql->net.read_pos= (uchar*)""; // fake an OK packet
return mysql_errno(mysql) ? (int)packet_error : 1 /* length of the OK packet */;
}
static void emb_on_close_free(MYSQL *mysql)
{
my_free(mysql->info_buffer);
mysql->info_buffer= 0;
if (mysql->thd)
{
free_embedded_thd(mysql);
mysql->thd= 0;
}
}
MYSQL_METHODS embedded_methods=
{
emb_read_query_result,
@@ -468,12 +479,12 @@ MYSQL_METHODS embedded_methods=
emb_fetch_lengths,
emb_flush_use_result,
emb_read_change_user_result,
emb_on_close_free,
emb_list_fields,
emb_read_prepare_result,
emb_stmt_execute,
emb_read_binary_rows,
emb_unbuffered_fetch,
emb_free_embedded_thd,
emb_read_statistics,
emb_read_query_result,
emb_read_rows_from_cursor