e7913cc022
Now takes a structure that, if present, enables the query classification caching and specifies the properties of the cache. For the time being no actual properties are yet available.
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2016 MariaDB Corporation Ab
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
*
|
|
* Change Date: 2022-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2 or later of the General
|
|
* Public License.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <maxscale/buffer.h>
|
|
#include <maxscale/paths.h>
|
|
#include <maxscale/query_classifier.h>
|
|
|
|
#define MYSQL_HEADER_LEN 4
|
|
|
|
GWBUF* create_gwbuf(const char* s, size_t len)
|
|
{
|
|
size_t payload_len = len + 1;
|
|
size_t gwbuf_len = MYSQL_HEADER_LEN + payload_len;
|
|
|
|
GWBUF* gwbuf = gwbuf_alloc(gwbuf_len);
|
|
|
|
*((unsigned char*)((char*)GWBUF_DATA(gwbuf))) = payload_len;
|
|
*((unsigned char*)((char*)GWBUF_DATA(gwbuf) + 1)) = (payload_len >> 8);
|
|
*((unsigned char*)((char*)GWBUF_DATA(gwbuf) + 2)) = (payload_len >> 16);
|
|
*((unsigned char*)((char*)GWBUF_DATA(gwbuf) + 3)) = 0x00;
|
|
*((unsigned char*)((char*)GWBUF_DATA(gwbuf) + 4)) = 0x03;
|
|
memcpy((char*)GWBUF_DATA(gwbuf) + 5, s, len);
|
|
|
|
return gwbuf;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int rv = EXIT_FAILURE;
|
|
|
|
set_libdir(strdup("../qc_sqlite"));
|
|
|
|
if (qc_setup(NULL, QC_SQL_MODE_DEFAULT, "qc_sqlite", NULL) &&
|
|
qc_process_init(QC_INIT_BOTH) &&
|
|
qc_thread_init(QC_INIT_BOTH))
|
|
{
|
|
const char s[] = "SELECT @@global.max_allowed_packet";
|
|
|
|
GWBUF *stmt = create_gwbuf(s, sizeof(s)); // Include superfluous NULL.
|
|
|
|
// In 2.0.1 this crashed due to is_submitted_query() in qc_sqlite.c
|
|
// being of the opinion that the statement was not the one to be
|
|
// classified and hence an alien parse-tree being passed to sqlite3's
|
|
// code generator.
|
|
qc_parse(stmt, QC_COLLECT_ALL);
|
|
|
|
qc_process_end(QC_INIT_BOTH);
|
|
|
|
rv = EXIT_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "error: Could not load query classifier.");
|
|
}
|
|
|
|
return rv;
|
|
}
|